powergrid handbook

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how to apply for electricity connection

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This handbook is published by PowerGrid Ltdin collaboration with SP Services Ltd

December 2002

Procedures and requirements highlighted in this handbook arecorrect at the time of printing. Any changes that may arise willbe reflected in the next edition.

ISBN: 981-04-6932-3

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Tel No Fax No

SP SERVICES LTD

General Enquiry on Application 68238287 68238289For Connection to Transmission System 68238340

Consumer Connection Agreement

Contracts Section 68238282 68238289

Testing and Turn-On Appointment

Supply Application Section 68238287 68238289Installation Section 62777064 62777044

Opening of Utilities Accounts

Enquiry 1800-2356841 68238219

POWERGRID LTD

Endorsement of Substation Drawings• East zone 68238555 68238564• West zone 68238556 68238564

Installation of Meters

Senior Manager (Meter) 62777000 62777008Enquiry 62777005

ImportantContact Numbers

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1 GENERAL INFORMATION 7

1.1 Introduction 7

1.2 Connection Voltages And Supply Frequency 7

1.3 Submission Of Application 8

1.4 Provision Of A Substation 8

1.5 Domestic Premises And Load Requirement Not Exceeding 45kVA 9

1.6 Meter 9

1.7 Tariffs For Non-Contestable Customers 10

1.8 Payment For Electricity Charges By Contestable Customers 10

1.9 Opening Account And Payment Of Security Deposit For

Use Of System (UOS) Charges 10

1.10 Termination Of Account 10

1.11 Disconnection Of Service Cables 10

2 APPLICATION FOR LOAD CONNECTION 11

2.1 Distribution Connection 11

2.2 Transmission Connection 14

3 TRANSMISSION CHARGES 17

3.1 Consumer Connection Agreement 17

3.2 Use of System (UOS) Charges For Non-Contestable Customers 18

3.3 Use of System (UOS) Charges For Contestable Customers 19

3.4 Temporary Supply 22

3.5 Supply For Power Stations 22

Table of Contents

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4 ENERGISATION AND TURN-ON PROCEDURES 23

4.1 Non-Domestic Premises

(Load Requirement Not Exceeding 45kVA), And Domestic

Premises Where Electrical Installations Are Provided

And Pre-Inspected Or Previously Inspected And Energised 23

4.2 Premises With Direct Connection

From PowerGrid’s Transmission System 24

4.3 Booking An Appointment 25

4.4 Premises With Indirect Connection

(i.e. Premises In a Multi-Metered Development) 27

4.5 Modification To An Existing Electrical Installation 28

4.6 Licence To Use Or Operate An Electrical Installation 28

4.7 Certificates And Statements For First Energisation

Of Service Connection 28

4.8 Lead-Time For Application For Service Connection 29

4.9 Notes To Be Read In Conjunction With Application Procedure 31

5 CUSTOMER’S INSTALLATION REQUIREMENTS 35

5.1 Requirements For HV And LV Connection (22kV And Below) 35

5.2 Requirements For EHV Connection (230kV And 66kV) 37

6 METERING REQUIREMENTS 39

6.1 General 39

6.2 Location Of Meter 40

6.3 Meter/Service Board Specifications (Single-Phase

And 3-Phase Services, Not Exceeding 100A Per Phase) 42

6.4 Wiring, Layout Of Meters, MCBs, etc

In Centralised Meter Rooms, Meter Compartments/

Riser Ducts/Cupboards 42

6.5 Submission Of Layout Plans 43

6.6 Meters For 3-Phase Low Voltage Connection

(Exceeding 100A Per Phase) 43

6.7 High Voltage/Extra High Voltage Metering 44

6.8 Master- And Sub-Metering Scheme 46

6.9 Metering Requirements 46

6.10 Contestable Customers 48

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7 APPENDICES 49

1 Application Form For Connection To PowerGrid

Transmission System 50

2 Consultation Form For Connection To PowerGrid

Transmission System 52

3 Form CS/3 – Letter Of Consent From The Landlord/Management

Corporation 53

4 Form CS/3H – Letter Of Consent From

The Housing & Development Board 54

5 Request To Handover Substation 55

6 Application For The Supply Of Water, Electricity And/Or Gas 56

7 Application For Interbank Giro 57

8 Form CS/5 – Application For Inspection Of Electrical Installation 58

9 Types And Layout Of Substation 60

10 Submission Of Substation Site And Design Plans 61

11 6.6kV/LV Substation (4 drawings) 62

12 22kV/LV Substation (5 drawings) 66

13 Heavy Aluminium Louvred Door For Electric Substation (6 drawings) 71

14 Gate Details (2 drawings) 77

15 Checklist For Substation Building Plan Submission 79

16 Substation Layout Requirements To Be Incorporated

In The Architectural Plans 80

17 General Requirements For EHV Substation (66kV And 230kV Only) 82

18 • Protection Requirements For Customer’s 22kV and 6.6kV

Main Incoming Switchgear 83

• Protection Requirements For Customer’s LV Main

Incoming Switchgear 84

• Type 1: Customer 66kV Feeder Connection

(Without Embedded Generation Plant) 85

• Type 2: Customer 66kV Feeder Connection

(With Embedded Generation Plant) 86

• Type 3: Customer 66kV Feeder Transformer Connection 87

• Type 4: Customer 230kV Feeder Connection 88

• Type 5: Customer 230kV Feeder Transformer Connection 89

19 Application For De-Energisation/Re-Energisation (ADRE) 90

20 Statement For De-Energisation And Re-Energisation (SDRE) 91

21 Certificate Of Readiness For The Energisation Of Service Connection 92

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22.1 Form CS/6 – Request For Installation Of Electricity kWh Meter

For New Supply Under Direct Supply From PowerGrid

(Contestable Customer) 94

22.2 Form CS/7 – Request For Installation Of Electricity kWh Meter

(For Load Exceeding 45kVA) Under Multi-Metered Building Scheme 95

23 Application For Appointment For Energisation Of

Service Connection By Fax 97

24 • Technical Requirements For Service Cable And

Meter Compartment For Landed Houses 98

• Standard Meter Compartments At Gate Pillar 99

25 Standard Meter Board 100

26 Standard Size For Single-Phase Meter Board 101

27 Standard Size For Three-Phase Meter Board 102

28 CT Meter Panel For Low Voltage Supply 103

29 Methods Of Sealing Meter Panels 104

30 Enclosure For Low Voltage Metering Current Transformers 105

31 HV Metering Kiosk Requirements (For 1 Or 2 Feeders) 106

32 • HV Metering Kiosk Requirements (For 3 Or 4 Feeders) 107

• CT Meter Panel For Low Voltage Supply 108

33 HV Metering Panel Requirements (For 1 or 2 Feeders) 109

34 Voltage Ratio, Sequence And Phase Angle Tests Report 110

35 Basis For The Service Connection Charge 111

36 Standard Service Connection Cables 112

37 Certificate of Compliance

Regulation 5(2) Of The Electricity

(Electrical Installations) Regulations 2002 113

38 Statement Of Turn-On Of Electricity

Regulation 5(3) Of The Electricity

(Electrical Installations) Regulations 2002 114

39 Requirements For Exempt Generation Facility Not Exceeding 1MW 115

40 List of Standards

• IEC Standards 116

• British Standards 119

• Singapore Standards 120

• Other Standards 120

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General Information

GeneralInformation1

1.1 INTRODUCTION

1.1.1 SP Services Ltd (SPSL) and PowerGrid Ltd (PowerGrid) are subsidiaries ofSingapore Power Ltd. SPSL provides support services for the electricitymarket. It receives requests for electricity service connection; offers termsand conditions of service connection; arranges for service connectionenergisation/turn-on; and collects transmission charges, security depositsand charges for other services on behalf of PowerGrid. SPSL also billscustomers for consumption. PowerGrid develops, operates and maintainstransmission and distribution facilities.

1.1.2 The supply of electricity and electrical installation practices are governedby the Electricity Act and its subsidiary legislation.

1.2 CONNECTION VOLTAGES AND SUPPLY FREQUENCY

1.2.1 In Singapore, customers’ load installations are connected at the followingvoltages:

1.2.1.1 Transmission voltage of 66kV and 230kV

1.2.1.2 Distribution voltage of 230V, 400V, 22kV (may vary within ± 6%)

The supply voltages are classified in the following categories:

1.2.1.3 Low voltage (LV) refers to 230V, single-phase and 400V, 3-phase

1.2.1.4 High voltage (HV) refers to 22kV

1.2.1.5 Extra high voltage (EHV) refers to 66kV and 230kV

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General Information

1.2.2 The following connection schemes are provided, according to customers’load requirements:

1.2.2.1 230V, 50Hz, single-phase, up to maximum of 23kVA, 100A

1.2.2.2 400V, 50Hz, 3-phase, 4-wire

1.2.2.3 22kV, 50Hz, 3-phase, 3-wire for a Contracted Capacity of:

1.2.2.3.1 between 1,700kW and 12,750kW for 2 HV services

1.2.2.3.2 between 12,751kW and 25,500kW for 4 HV services

1.2.2.4 66kV, 50Hz, 3-phase, 3-wire for connection with minimum ContractedCapacity of 25,500kW

1.2.2.5 230kV, 50Hz, 3-phase, 3-wire for connection with minimum ContractedCapacity of 85,000kW

1.2.3 Where the customer requires a connection voltage and/or frequencies thatdiffer from those specified above, the customer is required to provide, installand maintain the necessary transformation equipment.

1.3 SUBMISSION OF APPLICATION

SPSL serves as a one-stop customer service centre. It receives all applicationforms on behalf of PowerGrid, and responds to all applications made by theLicenced Electrical Worker (LEW), who acts as the customer’s agent forconnection to the transmission system.

Customers applying for their installations to be connected to PowerGrid’stransmission system must submit their applications through their LEWs.Every application must be accompanied by all supporting documentationrequested by SPSL. A copy of the Application Form is shown in Appendix 1.

For a development in the conception/planning stage, the customer is advisedto seek consultation regarding PowerGrid’s requirements, such as theprovision of a substation, for load connection. The Consultation Form(Appendix 2) must be submitted directly to PowerGrid by the customer’sLEW.

1.4 PROVISION OF A SUBSTATION

1.4.1 Direct service connection from PowerGrid’s LV network to the customer’sinstallation is available for a small load requirement not exceeding 280kVA(400A). However, the provision of a direct service connection is dependenton the available network capacity in the vicinity. If there is insufficientcapacity, the customer is required to provide a substation for the connection.

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General Information

1.4.2 For a larger load requirement exceeding 280kVA (400A), the customer hasto provide a substation for PowerGrid to install necessary equipment to caterfor the load.

1.5 DOMESTIC PREMISES AND LOAD REQUIREMENT NOT EXCEEDING

45kVA

1.5.1 For premises where the electricity meter has already been installed byPowerGrid and no extension or rewiring work is required, electricity serviceconnection will be turned-on on the 4th working day from the date of theopening of an account with SPSL.

1.5.2 For premises where there is no electricity meter or where extension orrewiring work is required, the customer has to engage an LEW and submitan application for load connection (See Section 2).

1.6 METER

All meters required for measuring a customer’s electricity consumption anddemand (where applicable) are provided and maintained by PowerGrid. Thecustomer provides meter boards, compartments, kiosks etc, as PowerGridmay require for the installation of its metering equipment.

1.6.1 Master- And Sub-Metering

A “Master-meter” is a meter measuring the consumption for all units andcommon areas in a building or cluster of buildings which are used or occupiedby multiple consumers.

A “Sub-meter” is a meter measuring the consumption for a unit in a buildingor cluster of buildings used or occupied by multiple consumers, whoseelectricity is taken through a Master-meter.

1.6.1.1 Multi-Metered Premises

The following are categories of multi-metered premises:

1.6.1.1.1 Residential premises which have landlord and tenant supply connections

1.6.1.1.2 Commercial complexes which have landlord and tenant supply connections

1.6.1.1.3 Multi-storey factories or industrial complexes which have landlord and tenantsupply connections

1.6.1.1.4 All multi-metered premises fall under the Master- and Sub-metering scheme,with the exception of HDB residential premises.

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General Information

1.7 TARIFFS FOR NON-CONTESTABLE CUSTOMERS

1.7.1 Tariffs are currently charged for low tension, high tension and extra hightension electricity consumption.

1.7.2 Tariffs are subject to change and are published by SPSL from time to time.Online information on the latest electricity tariffs are available atwww.spservices.com.sg.

1.8 PAYMENT FOR ELECTRICITY CHARGES BY CONTESTABLE CUSTOMERS

Contestable customers pay to SPSL or authorised retailers, charges forelectricity consumption as ascertained by meters, and transmission chargesand other fixed charges as determined by SPSL. Payment for electricitycharges must be made on or before the due date specified in the bill.

1.9 OPENING ACCOUNT AND PAYMENT OF SECURITY DEPOSIT FOR USE

OF SYSTEM (UOS) CHARGES

The customer must open an account and place a security deposit for UOScharges with SPSL upon application for energisation of service connection.

1.10 TERMINATION OF ACCOUNT

Non-contestable customers must give 4 business days’ notice and contestablecustomers must give 12 business days’ notice to terminate an account. Suchnotices must be in writing.

1.11 DISCONNECTION OF SERVICE CABLES

Disconnection work involves the de-energisation and removal of servicecables and equipment (See 4.9.6). The following are indicative lead-timesfor the work:

1.11.1 For disconnection and removal of LV service cables where road-openingwork is not involved, the lead-time is about 5 business days. Where roadopening work is involved, a lead-time of 1 month is required.

1.11.2 For disconnection of 6.6kV and 22kV where removal of service cables andequipment are involved, the lead-time is about 1 month.

1.11.3 For disconnection of 66kV and 230kV service cables, the service cable andequipment are de-energised within 10 business days, subject to the approvalof the Power System Operator (PSO). The subsequent removal of servicecables and equipment will depend on the operational requirement andapproval of the PSO.

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Application For Load Connection

2.1 DISTRIBUTION CONNECTION

2.1.1 Introduction

Each premises can have only one customer’s intake connection point. Formodification of connection (such as upgrading of the load requirement) toexisting premises, the customer is required to amalgamate the existing serviceconnection into one intake.

2.1.2 Consultation

For a development in the initial planning stage, the customer is advised toseek consultation with PowerGrid to ascertain PowerGrid‘s requirementsfor a new or modified connection to the transmission system. The LEW isrequired to submit the Consultation Form (Appendix 2), together with a site/location plan to PowerGrid.

After receipt of the submission for consultation, PowerGrid will send a replystating the approved load and other technical requirements, such as theprovision of substation requirements necessary for the load connection tothe transmission system.

2.1.3 Application

The Application Form (Appendix 1), together with a copy of the site/locationplan, must be submitted to SPSL by the LEW for new or modified connectionsof new or existing premises to the transmission system.

Application ForLoad Connection2

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2.1.3.1 Processing Of Application

Generally, SPSL responds to applications within 10 business days. Theresponses are made according to the following customer categories:

2.1.3.1.1 Contestable Customer

– A Consumer Connection Agreement, containing the service connectioncharge payable, the offer letter and the standard terms and conditionswith respect to the distribution service connection.

– If a substation is required, a letter stipulating the requirements will beforwarded to the customer, and an Agreement offered after the substation’splans are endorsed.

2.1.3.1.2 Non-Contestable Customer

– A Quotation, containing service connection charge payable and theconditions of service with respect to the distribution service connection.

– If a substation is required, a letter stipulating the requirements will beforwarded to the customer. A Supply Agreement, including the serviceconnection charge payable and the terms and conditions with respect tothe distribution service connection, is offered after the substation’s plansare endorsed.

2.1.3.2 Commencement Of Work

– PowerGrid commences work only when the Agreement has been signedand received by SPSL, together with payment of service connectioncharges.

2.1.4 Types Of Premises

2.1.4.1 Multi-Metered Premises

2.1.4.1.1 A multi-metered premises is one where the landlord/MCST (i.e. a master-metered consumer or directly connected consumer) receives bulk intakeservice connection from PowerGrid, and transforms/reticulates the supplyto all the tenants (i.e. sub-metered consumers) within the premises. Anyapplication for new or modified connection (including upgrading) for thebulk intake to the multi-metered premises must be made by the landlordthrough its LEW.

A master-metered consumer means a consumer that is responsible for thecommon usage of a master-metered installation which is connected to thetransmission system.

A master-metered installation means an installation in which supply isreceived by a master-metered consumer and sub-metered consumers.

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A sub-metered consumer means a consumer, other than a master-meteredconsumer, that receives supply in a master-metered installation via theelectrical system owned by a master-metered consumer.

2.1.4.1.2 The landlord/MCST or HDB, in the case of HDB premises, must ensure thatthe total applied load requirement for service connections to the multi-metered premises meet the total existing and future load requirements forall tenants. All tenants applying for any upgrading of load must do so throughtheir master-metered consumer. In this regard, the master-metered consumermust approve the load of all tenants within the premises.

2.1.4.1.3 If the landlord’s existing approved load is insufficient to cater for the tenants’load requirement, the landlord, as a master-metered consumer, must submitan application to SPSL for modification (upgrading) of service connectionto the existing premises. In this case, the existing service cables areamalgamated with the new intake. Hence, there will not be separate directconnections to the tenants of such premises.

2.1.4.2 Premises In Private Housing, Industrial Estates, Commercial Developments

Requiring Provision Of Low Voltage (LV) Distribution Network

2.1.4.2.1 For connection to premises where several parcels of land are to be sold orleased individually, one or more substations must be provided by thedeveloper. Where the individual parcels of land are to be sold prior todevelopment of these substations, details of the substation requirements andapproved load must be included in the sales agreement by the future landparcel’s owner or lessee.

2.1.4.2.2 The developer must provide the development’s total load requirement andinclude the breakdown of the individual premises’ load requirement (asspecified in the sales agreement) and the communal load requirement, ifapplicable.

2.1.4.2.3 In the case of landed housing estate development, the LEW must liaise withNational Parks Board for the siting of overground distribution boxes on turfedareas. PowerGrid will provide and install the LV distribution network andservice connection cables for the development.

2.1.4.3 Premises Involving Temporary Connection With Provision Of Substation

2.1.4.3.1 Special terms and conditions apply in such cases for temporary connectionto construction worksites and other temporary premises. The term grantedfor temporary connection is usually 24 months.

2.1.4.3.2 Where there is a need for the provision of a temporary substation, thecustomer must provide the site and construct the structure of the substationaccording to the requirements of PowerGrid.

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2.1.4.3.3 There will be a need to install the necessary cables and equipment to facilitatethe temporary connection to the distribution network. The customer paysoutright costs for the cables and a monthly hiring charge for the use of theequipment (including the cost of insuring the equipment) during the termfor temporary connection.

2.1.5 Provision Of Substation

2.1.5.1 When an application for load connection necessitates the provision of asubstation (See Appendices 9 & 10), a site must be provided and a substationconstructed by the customer at its own cost.

2.1.5.2 The customer is advised to site the substation at an inconspicuous location,away from the main entrance of the development and major public roads.The customer is also encouraged to harmonise, blend and integrate thesubstation with its development.

2.1.5.3 PowerGrid’s officers and vehicles will have full and unrestricted access tothe substation.

2.1.6 Types Of Service Connection Cables

The types of cables for service connection is shown in Appendix 36. In theevent that the customer is required to supply and install the cables, thecustomer’s LEW has to seek consent from PowerGrid if the cables are differentfrom the list shown in Appendix 36.

2.2 TRANSMISSION CONNECTION

2.2.1 Consultation

2.2.1.1 A customer may choose to seek preliminary comments from PowerGrid viathe connection consultation process before submitting a formal application.This practice is encouraged as incorporating PowerGrid’s requirements in adeveloper’s preliminary proposal would expedite the application process ata later stage.

2.2.1.2 To initiate the connection consultation process, the customer has to submitthe Consultation Form (Appendix 2) through an LEW to PowerGrid.

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2.2.2 Application

The following are steps in the application for service connection:

2.2.2.1 The customer submits the Application Form (Appendix 1) through an LEWto SPSL.

2.2.2.2 A connection proposal, duly endorsed by the PSO, is given to the customer.It outlines the connection scheme, connection voltage, connection equipmentand facilities required of the customer and the estimated connection charges.PowerGrid endeavors to respond to the customer, through SPSL, within 60business days and 100 business days for 66kV connections and 230kVconnections respectively.

2.2.2.3 Where the application requires the provision of an EHV substation, thecustomer must adhere to the general requirements attached in Appendix 17.

2.2.2.4 Once the customer acknowledges acceptance of PowerGrid’s connectionproposal, PowerGrid proceeds to execute the Consumer ConnectionAgreement through SPSL. The Agreement contains an offer letter, the standardterms and conditions associated with the connection and an estimation ofthe connection charges.

2.2.3 Lead-Time For Application Of Transmission Connection

2.2.3.1 The timely provision of electricity supply to a development involves thejoint efforts of SPSL, PowerGrid, and the customer and their agents, such asthe LEW. While SPSL and PowerGrid will make every effort to engineer andimplement the connection scheme, it is at the same time essential for thenew customers and their agents to co-operate via timely submission ofapplications and plans, timely acceptance of the terms and conditions ofconnection and compliance with the necessary PowerGrid or TransmissionCode requirements.

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2.2.3.2 As a guide for the customer and their agents, the normal lead-times for theevents leading to the energisation of 66kV service connections are listed inthe box below. The actual lead-time to energisation may vary for eachconnection, depending on the actual service cable length and the progressof intermediate events leading to completion of service connection works.Customers will be informed accordingly either at the point of application orat any time a review is required. For 230kV service connections, the customerwill be informed of the lead-time only at the point of application.

NORMAL LEAD-TIME FOR ENERGISATION OF 66kV SERVICE CONNECTION

New 66kV Connection

New 66kV Connection from New 66kV Substation

from PowerGrid’s Provided by Connection

Events Existing Substation Applicant

From day of executionof Consumer Connection 21 months 26 months*Agreement to energisationof service connection

Note:* The customer is required to handover the substation 8 months prior to target date of

energisation of service connection.

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Transmission Charges

3.1 CONSUMER CONNECTION AGREEMENT

3.1.1 All customers are required to enter into a Consumer Connection Agreementwith PowerGrid and to pay Use of System (UOS) charges. Customers havinga direct connection to the transmission system must also pay a serviceconnection charge. For non-contestable customers, the ConnectionAgreement is part of the Supply Agreement.

3.1.2 The Consumer Connection Agreement for customers taking HV supply at6.6kV/22kV or EHV supply at 66kV/230kV will, inter alia, state the ContractedCapacity, which is deemed to be the requirements for a period of five years.Customers cannot reduce their Contracted Capacity until the expiration ofthe 5-year period or additional 5-year period. Further, a customer whoterminates the supply agreement during the 5-year period or additional 5-year period will be required to pay PowerGrid through SPSL/Retailer, theContracted Capacity Charge for the unexpired portion of the 5-year period.

3.1.3 UOS charges are payments for the use of the transmission services. The UOScharges are paid for electricity consumption at each metered intake supplypoint in accordance with the voltage at which a customer receives theelectricity supply.

3.1.4 In the case of HV and EHV supply to multi-metered premises, the landlordhas to enter into a Connection Agreement for the network capacity requiredfor his own load only – i.e. supply for common services, etc.

Transmission Charges3

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3.2 USE OF SYSTEM (UOS) CHARGES FOR NON-CONTESTABLE CUSTOMERS

3.2.1 UOS charges for non-contestable customers are included in the electricitytariffs offered by SPSL. The types of tariffs currently available are for lowtension (LT: 400V/230V), high tension (HT: 22kV and 6.6kV) and extra hightension (EHT: 66kV).

3.2.3 Low Tension (LT) Supply

LT customers pay charges based only on energy (kWh units) supplied to aninstallation. The supply is charged at a flat rate for each kWh delivered ateach metered intake supply point.

3.2.4 High Tension (HT)/Extra High Tension (EHT) Supply

HT and EHT customers pay charges calculated from tariffs based on theContracted Capacity Charge, Usage Charge, Uncontracted Capacity Chargeand Reactive Power Charge.

3.2.4.1 The Contracted Capacity Charge payable by customers to SPSL is based onkW Contracted Capacity. The Contracted Capacity Charge is calculated asfollows:

Contracted Capacity Charge = Customer’s Contracted Capacity xContracted Capacity Rate

3.2.4.2 The Usage Charge payable by the customers to SPSL is based on kWh ofelectricity supplied. The Usage Charge is calculated as follows:

3.2.4.2.1 For Peak Period

Usage Charge = kWh consumed during the Peak Period x Peak Period Rate

3.2.4.2.2 For Off-Peak Period

Usage Charge = kWh consumed during the Off-Peak Period xOff-Peak Period Rate

3.2.4.3 The Uncontracted Capacity Charge, which is based on the customer’s excesskW demand, is payable if in any month the customer’s actual kW maximumdemand exceeds its Contracted Capacity. The Uncontracted Capacity Chargeis calculated based on the following:

Uncontracted Capacity Charge = (kW maximum demand – ContractedCapacity) x Uncontracted Capacity Rate

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3.2.4.4 The Reactive Power Charge, which is based on the customer’s excess kVArh,is payable if in any month the customer’s kVArh consumption exceeds 62%of its kWh consumption. The Reactive Power Charge is calculated based onthe following:

Reactive Power Charge = (kVArh – 62% of kWh) x Reactive Power Rate

3.3 USE OF SYSTEM (UOS) CHARGES FOR CONTESTABLE CUSTOMERS

Contestable customers pay UOS charges for transmission services at eachmetered intake supply point in accordance with the voltage at which thecustomers receive the electricity supply.

UOS charges are subject to change and these changes will be published byPowerGrid from time to time.

3.3.1 Low Tension (LT) Supply

LT supply is metered on energy (kWh units). LT supply for contestablecustomers attract UOS charges based only on energy supplied to aninstallation. The supply is charged at a flat rate for each kWh delivered ateach metered intake supply point.

3.3.2 High Tension (HT), Extra High Tension (EHT) And

Ultra High Tension (UHT: 230kV and above) Supply

For HT, EHT and UHT supply, each metered intake supply point attracts itsown UOS charges as follows:

a) a Contracted Capacity Charge,b) a Peak Period Charge,c) an Off-Peak Period Charge,d) a Reactive Power Charge, ande) (i) an Uncontracted Capacity Charge, and

(ii) an Uncontracted Standby Capacity Charge (only for customers withembedded generation who opt to cap their demand drawn from thenetwork).

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3.3.2.1 Contracted Capacity Charge

3.3.2.1.1 The Contracted Capacity Charge is a monthly charge for the ContractedCapacity at each metered intake supply point of a customer. The ContractedCapacity of a metered intake supply point is the total supply capacity in kWrequested by the customer.

3.3.2.1.2 For a new supply, the Contracted Capacity is deemed to be the customer’srequirement for a binding period of 5 years. This period starts from the targetdate or the date PowerGrid’s plant and equipment, except for the servicecable, are available to provide such Contracted Capacity, whichever is thelater.

For new HT, EHT and UHT supply, the minimum Contracted Capacity foreach metered intake supply point shall be as follows:

HT with 1 or 2 feeders 1,700kWHT with 3 or more feeders 12,750kWEHT 25,500kWUHT 85,000kW

For new supply, a request may be made for intermediate steps before the fullContracted Capacity is implemented during the first year of the 5-year bindingperiod. The first step will be at least one quarter of the customer’s fullContracted Capacity at each metered intake supply point.

3.3.2.1.3 After the 5-year period, the Contracted Capacity at each metered intake supplypoint may be reduced subject to the following minimum values:

HT with 1 or 2 feeders 850kWHT with 3 or more feeders 6,375kWEHT 12,750kWUHT 42,500kW

Any revision of the Contracted Capacity after the 5-year period will applyfor a minimum binding period of 1 year.

3.3.2.1.4 For a new development with landlord and tenants, the supply capacityrequired by the landlord himself must meet the minimum values set out in3.3.2.1.2 and 3.3.2.1.3 above in order for the landlord to qualify for HT orEHT supply.

3.3.2.1.5 Upward revision of the Contracted Capacity may be allowed during thevalidity of the binding period of 5 years or 1 year of the Contracted Capacity.The revised Contracted Capacity in such cases apply for the remainder ofthe 5-year period or for a minimum period of 1 year, whichever is the greater,provided PowerGrid is not required to install new or additional equipment.Downward revision during a binding period will not be allowed.

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3.3.2.1.6 A customer whose revised contracted capacity requires PowerGrid to installnew or additional equipment, will be considered as receiving a new supplywith a new 5-year binding period.

3.3.2.2 Peak Period Charge

The Peak Period Charge payable is the monthly charge based on the energy(kWh units) supplied to an installation during the peak period – from 7.00amto 11.00pm – in that month.

3.3.2.3 Off-Peak Period Charge

The Off-Peak Period Charge payable is the monthly charge based on theenergy (kWh units) supplied to an installation during the off-peak period –from 11.00pm to 7.00am – in that month.

3.3.2.4 Reactive Power Charge

The Reactive Power Charge is a monthly charge for the installation’s excesskVArh consumption. The excess kVArh is the difference by which theinstallation’s kVArh consumption drawn from the network in that month isgreater than 62% of its kWh consumption drawn from the network in thesame month.

3.3.2.5 Uncontracted Capacity Charge

3.3.2.5.1 The Uncontracted Capacity Charge applies to customers without embeddedgeneration. It also applies to existing HT and EHT customers with embeddedgeneration whose monthly maximum demand in kW is the maximumsummated demand in kW in the month, determined by summating the kWdemand from the network and the kW output from embedded generation.

3.3.2.5.2 The Uncontracted Capacity Charge is a monthly charge for the UncontractedCapacity consumed. The Uncontracted Capacity is the capacity in kW bywhich the maximum demand in kW (measured by the half-hour integrationmeter) exceeds the Contracted Capacity at that metered intake supply point,and is chargeable for the month concerned.

3.3.2.5.3 The Uncontracted Capacity Charge is also applicable to existing HT andEHT customers with embedded generation who opt to cap their powerdemand in kW drawn from the network in the event that the maximumdemand in kW (measured by the half-hour integration meter) exceeds theContracted Capacity. The Uncontracted Capacity for these customers islimited to 20% of the Contracted Capacity.

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3.3.2.6 Uncontracted Standby Capacity Charge

3.3.2.6.1 The Uncontracted Standby Capacity Charge applies to existing customerswith embedded generation who opt to cap their power demand in kW drawnfrom the network. This charge applies to such customers in the event thattheir demand in kW exceeds 120% of the Contracted Capacity at that meteredintake supply point due to their failure to cap the kW demand drawn fromthe network.

3.3.2.6.2 The Uncontracted Standby Capacity Charge is a monthly charge for theUncontracted Standby Capacity consumed. The Uncontracted StandbyCapacity is the capacity in kW by which the demand in kW (measured bythe power meter) exceeds 120% of the Contracted Capacity at that meteredintake supply point for a duration of more than 10 seconds due to theirfailure to cap the kW demand drawn from the network, and is chargeable forthe month concerned.

3.4 TEMPORARY SUPPLY

Temporary supply is available only at LT and HT voltages for temporarycivil engineering and building construction sites. The UOS charges applicablefor the LT and HT temporary supply will be as in 3.2 and 3.3.

For temporary supply at HT, the Contracted Capacity applies for a minimumbinding period of 1 year. Upward revision of the Contracted Capacity maybe allowed during the validity of the binding period of the ContractedCapacity. The revised Contracted Capacity in such cases apply for a minimumperiod of 1 year, provided PowerGrid is not required to install new oradditional equipment. Downward revision during a binding period will notbe allowed. A customer whose revised Contracted Capacity requiresPowerGrid to install new or additional equipment is considered as receivinga new temporary supply.

3.5 SUPPLY FOR POWER STATIONS

The UOS charge for transmission services provided to a power station whichdraws electricity supply through the generation connection is based only onenergy (kWh) units. The UOS charge applies to the sum of the net kWhimported half-hourly into the power station through the generationconnection and is based on the connection voltage.

The UOS charge for transmission services provided to a power station whichdraws electricity supply through a separate service connection is the sameas for a load and attracts a Contracted Capacity Charge based on the serviceconnection voltage.

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Energisation And Turn-On Procedures

The term “energise”, in the case of a customer’s installation that is directly connected tothe transmission system, refers to the closing of a circuit breaker or other isolatingdevice that is owned and controlled by PowerGrid. “Energisation”, “de-energisation”and “re-energisation” and all grammatical variations of the term shall be interpretedaccordingly.

Arrangements need to be made with SPSL for energisation of the service connectionand turn-on of a customer’s electrical installation. This is taken care of by the LEW. Thefollowing are arrangements needed by type of premises:

4.1 NON-DOMESTIC PREMISES (LOAD REQUIREMENT NOT EXCEEDING

45kVA), AND DOMESTIC PREMISES WHERE ELECTRICAL INSTALLATIONS

ARE PROVIDED AND PRE-INSPECTED OR PREVIOUSLY INSPECTED AND

ENERGISED

4.1.1 This category includes all new HDB apartments and dwelling units in someprivate residential developments where electrical installations are providedand inspected in advance. It also includes non-domestic premises (supplycapacity not exceeding 45kVA) and domestic premises where the existingelectrical installations and service connections are intact and only the supplyis required to be re-energised.

4.1.2 The customer has to open an account with SPSL for electricity serviceconnection (See 4.9.2).

4.1.3 The customer is given an appointment date for turn-on of service connection.This appointment date is normally the 4th working day from the date theaccount is opened. For electrical safety reasons, the customer or hisrepresentative must be present at the premises for the turn-on of electricityservice connection.

Energisation andTurn-On Procedures4

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4.2 PREMISES WITH DIRECT CONNECTION

FROM POWERGRID’S TRANSMISSION SYSTEM

4.2.1 Domestic Premises (all load requirements)

4.2.1.1 The customer opens an account with SPSL, if an account has not alreadybeen opened (See 4.9.2).

4.2.1.2 Upon completion of the electrical installation and receipt of notificationfrom PowerGrid on energisation/readiness of the service connection, theLEW books an appointment with SPSL for inspection and turn-on of thecustomer’s installation. This is done by submitting the Certificate ofCompliance (COC) form (See 4.7.1).

4.2.1.3 The electrical installation is connected to PowerGrid’s transmission systemon the scheduled turn-on date if the electrical installation is safe to receiveelectricity supply. The LEW must be present during inspection of theelectrical installation by SPSL. For electrical safety reasons, the customer orhis representative must also be present at the premises for the turn-on ofelectricity service connection. A ‘PASS’ Inspection Report is issued by SPSLon-site upon successful turn-on of the customer’s installation.

4.2.2 Non-Domestic Premises

4.2.2.1 Load Requirement Not Exceeding 45kVA

4.2.2.1.1 The customer opens an account with SPSL, if this has not already been done(See 4.9.2).

4.2.2.1.2 Upon completion of the electrical installation and receipt of notification fromPowerGrid on energisation of the service connection, the LEW books anappointment with SPSL for inspection and turn-on of the electrical installation.This is done by submitting the COC form (See 4.7.1).

4.2.2.1.3 The electrical installation is connected to PowerGrid’s transmission systemon the scheduled turn-on date if the electrical installation is safe to receiveelectricity supply. The LEW must be present during inspection of theelectrical installation by SPSL. For electrical safety reasons, the customer orhis representative must also be present at the premises for the turn-on ofelectricity service connection. A ‘PASS’ Inspection Report for the customer’sinstallation is issued by SPSL on-site upon successful turn-on.

4.2.2.2 Load Requirement Exceeding 45kVA

4.2.2.2.1 The customer submits an application for an account (See 4.9.2) and meterinstallation Form CS/6 (Appendix 22.1) to SPSL if this has not already beendone, and applies for a licence from Energy Market Authority (EMA) to useor operate an electrical installation.

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4.2.2.2.2 Upon completion of the electrical installation and receipt of notificationfrom PowerGrid on the readiness of service connection, the LEW must inspectand test the electrical installation before booking an appointment with SPSLfor energisation of service connection by PowerGrid. This is done bysubmitting the COC form (See 4.7.1).

4.2.2.2.3 The LEW in charge of the design, installation and supervision of work has toarrange for the LEW in charge of the operation of the installation and thecustomer (or his representative) to be present during the energisation.

4.2.2.2.4 The electrical installation is connected to PowerGrid’s transmission systemon the scheduled energisation date if the electrical installation is safe toreceive electricity supply. The LEW must issue a Certificate of Readiness(COR) form (See 4.7.2) to PowerGrid at site, prior to energisation of the serviceconnection.

4.2.2.2.5 Upon successful energisation of service connection to the customer’sinstallation from PowerGrid’s direct connection, all parties are toacknowledge on the Statement of Turn-On of Electricity (See 4.7.3).

4.3 BOOKING AN APPOINTMENT

4.3.1 Before booking an energisation and turn-on appointment, the LEW mustensure the following:

4.3.1.1 Metering requirements, where applicable, have been submitted and formalclearance has been given by PowerGrid’s Meter Section. All necessary metershave been installed.

4.3.1.2 The customer’s main incoming switchgear, protection system and earthingsystem have been successfully tested by an LEW. The HV metering panelhas been provided, and testing of the metering current transformers/voltagetransformers have been carried out and meters installed by Meter Section.

4.3.1.3 The service cables to the installation are ready to be energised.

4.3.1.4 An utilities account has been opened, a Connection Agreement has beensigned, and a security deposit for UOS has been paid by the customer.

4.3.1.5 A licence to use or operate the electrical installation, where applicable, hasbeen obtained from EMA.

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4.3.1.6 For service connection at a system voltage level of 66kV and above, the finalclearance for the EHV switching procedure must be obtained from the PSOprior to the confirmation of the first energisation date.

Notes:(1) The EHV switching procedure must be jointly prepared and endorsed

by the LEW, who is authorised to perform EHV switching (at customer’sinstallation), and PowerGrid’s Project Engineer.

(2) For 66kV and above, the LEW must submit the COC form to PowerGrid’sProject Engineer.

4.3.2 Making An Appointment For Energisation Of Service Connection Direct

From PowerGrid’s Transmission System

4.3.2.1 Load Requirement Not Exceeding 45kVA

To make an appointment to turn-on electricity supply, the LEW or hisrepresentative submits the letter confirming the energisation of serviceconnection and the COC, and pays an inspection fee to SPSL. This is donein person at Supply Application Section of SPSL at 111 Somerset Road,#01-10 Customer Services Centre.

4.3.2.2 Load Requirement Exceeding 45kVA Up To 22kV Supply Voltage

An appointment for energisation of electricity service connection of loadrequirements greater than 45kVA and up to 22kV supply voltage can be madeas follows:

To make an appointment in person to energise the service connection, theLEW or his representative submits the letter confirming the readiness ofservice connection and the COC to SPSL’s Installation Section at 7th storey,St James District Office, Telok Blangah Road.

Alternatively, the LEW can submit the Application for Appointment forEnergisation of the Service Connection By Fax (Appendix 23) to InstallationSection.

4.3.2.3 A lead-time of 14 business days is required for the LEW to request for theenergisation of PowerGrid’s service connection and turn-on of the customer’sinstallation.

4.3.2.4 Energisation of service connection involves several parties. An officer atSPSL’s Installation Section co-ordinates with PowerGrid for the energisationof the service connection for supply taken directly from PowerGrid’stransmission system.

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4.4 PREMISES WITH INDIRECT CONNECTION

(I.E. PREMISES IN A MULTI-METERED DEVELOPMENT)

4.4.1 Load Requirement Not Exceeding 45kVA

4.4.1.1 The customer opens an account with SPSL (See 4.9.2) if this has not alreadybeen done.

4.4.1.2 The customer submits an Application for Inspection of Electrical Installation(Appendix 8) to SPSL through the LEW together with a Letter of Consentfrom the Landlord/Management Corporation or HDB (Appendices 3 and 4).The LEW can also book an appointment for inspection of the electricalinstallation at the time of submission of the application and, in the meantime,proceed to carry out the wiring/extension work. The procedure of bookingan appointment is as in 4.3.2.1 above.

4.4.1.3 The LEW is responsible for arranging the energisation of the serviceconnection with the relevant party responsible where connection is takenvia the landlord’s switchboard – such as in HDB, JTC or other private multi-metered buildings.

4.4.1.4 Service connection will be turned-on on the scheduled inspection date ifthe electrical installation is safe to receive electricity supply. The LEW mustbe present during the inspection. A ‘PASS’ Inspection Report for the customerinstallation will be issued on-site upon successful turn-on. The LEW mustissue a Statement of Turn-On of Electricity and this must be acknowledgedby the relevant parties.

4.4.2 Load Requirement Exceeding 45kVA (Multi-Metered Building Scheme)

4.4.2.1 When the premises is ready for installation of meters, the LEW/customermust submit an Application Form for Account Opening with Security Depositpayable, together with Form CS/7 (Appendix 22.2), and sign an agreementwith SPSL.

4.4.2.2 The LEW shall proceed to liaise with PowerGrid’s Meter Section to have themeters installed.

4.4.2.3 SPSL then advises the LEW to proceed to apply to EMA for an EI Licencebefore the supply is turned on.

4.4.2.4 After the meters are installed, the LEW must submit a copy of the COC andconfirm the activation date (which is the proposed turn-on date) with SPSL.

4.4.2.5 The LEW is responsible for arranging the energisation of the serviceconnection with the relevant party where the connection is taken via thelandlord’s switchboard – such as HDB, JTC or private multi-meteredbuildings.

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4.4.2.6 The landlord’s LEW will issue the Statement of Turn-On of Electricity uponsuccessful turn-on.

4.4.2.7 Contestable customers must subscribe and install a dedicated telephone lineper metering point to be used for the purpose of remote metering.

4.5 MODIFICATION TO AN EXISTING ELECTRICAL INSTALLATION

4.5.1 Modification work (e.g. extension, rewiring, shifting of meter) carried out toan existing electrical installation where a licence to use or operate is notrequired, must be inspected by SPSL before the new/modified portion of thewiring can be used.

4.5.2 The LEW must submit an application for inspection (Appendix 8) by SPSLfor the modified electrical installation.

4.6 LICENCE TO USE OR OPERATE AN ELECTRICAL INSTALLATION

4.6.1 For service connection to non-domestic premises, residential buildings andcondominiums with an approved load greater than 45kVA, and temporaryconnection for building construction and engineering work, irrespective ofconnection load, the customer must obtain a licence from EMA to use oroperate the electrical installation.

4.6.2 It must be noted that PowerGrid cannot energise the service connection untilsuch a licence is issued to the customer.

4.7 CERTIFICATES AND STATEMENTS

FOR FIRST ENERGISATION OF SERVICE CONNECTION

4.7.1 Certificate Of Compliance (COC)

4.7.1.1 The LEW must ensure that the electrical installation complies with therequirements of the Electricity Regulations, Singapore Standards CP5,relevant technical requirements and all other applicable standards. Thiscompliance must be made in the COC form (Appendix 37). The COC formmust be submitted to PowerGrid through SPSL when requesting for anenergisation appointment.

4.7.2 Certificate Of Readiness (COR)

4.7.2.1 The LEW has to certify the readiness of the installation. This certificationmust be made in the COR form (Appendix 21). The LEW must hand over theCOR form to PowerGrid’s Project Officer on the actual date of firstenergisation.

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4.7.3 Statement Of Turn-On Of Electricity

4.7.3.1 Immediately after the successful first energisation of the service connection,PowerGrid will issue a Statement of Turn-On of Electricity (Appendix 38).All parties are to acknowledge by signing the form. The completed formwill be given to all parties and a copy forwarded to SPSL.

4.8 LEAD-TIME FOR APPLICATION FOR SERVICE CONNECTION

4.8.1 The timely provision of electricity supply to a development involves thejoint efforts of SPSL, PowerGrid, and the customer and his agents, such asthe LEW. While SPSL and PowerGrid will make every effort to engineer andimplement the connection scheme, it is at the same time essential for thenew customers and their agents to play their part such as the early submissionof applications and plans, the acceptance of terms and conditions ofconnection including making the necessary payments and the complianceof the necessary PowerGrid or Transmission Code requirements.

4.8.2 As a guide for the customer and his agents, the normal lead-times for thevarious events are listed on the following page. Depending on the progressand completion time of precedent events, the actual completion dates ofevents leading to the energisation of the service connection may need to bereviewed and adjusted.

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NORMAL LEAD-TIME FOR ENERGISATION OF SERVICE CONNECTION UP TO 22kV

Installation with Existing

Service Connection not Non-domesticExceeding 45kVA or Installation with New Connection New Connection

Domestic Premises Existing Service from PowerGrid’s from NewPre-inspected Inspection Connection Low Voltage Mains Substation

Installation or Required Exceeding 45kVAReconnection

Submission of NA 14 days* 4 weeks 3 months 6 months

application to SPSL

Submission of substation NA NA NA NA 5 1/2 months

plans to PowerGrid

Acceptance of Agreement 4 days 14 days 14 days 7 weeks** 11 weeks*

Handover of substation NA NA NA NA 10 weeks*

to PowerGrid+

Opening of account

with SPSL 4 days 14 days 14 days 14 days 11 weeks

Arrangements to inspect NA 10 days NA NA NA

customer’s installation

(not exceeding 45kVA)

by SPSL

Application to EMA NA NA 10 days 10 days 10 days

for licence to use or

operate an electrical

installation

Request for energisation NA NA 14 days 14 days 14 days

of service connection

* These are critical events. Failure to adhere to the schedule may result in delay in the turn-on ofsupply.

** For connection by underground cable, PowerGrid will have to seek road opening approval fromthe relevant authorities before cable work can commence. The approval process usually takes about3 weeks. Depending on the length of cable to be installed, supply will normally be available 4 to 6weeks from the date customer’s premises is ready to receive the service cable.

+ Energisation of service connection will normally take place within 10 weeks of handing over ofsubstation. This lead-time may vary from case to case, depending on the customer’s schedule.

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4.9 NOTES TO BE READ IN CONJUNCTION WITH APPLICATION PROCEDURE

4.9.1 Licensed Electrical Worker

4.9.1.1 Under the Electricity Act, the design and installation of an electricalinstallation may be undertaken by the following categories of LEWs:

Supply Capacity of

Electrical Workers Installation Voltage

Electrician Not exceeding 45kVA Not exceeding 1,000VElectrical Design: Not exceeding 1,000VTechnician Not exceeding 150kVA

Install:Not exceeding 500kVA

Electrical Engineer No limit No limit

4.9.1.2 The customer should appoint an LEW appropriate to the capacity and voltageof the proposed installation, and inform SPSL immediately of any change ofLEW during the course of the project.

4.9.2 Opening An Account

4.9.2.1 Before supply to an installation can be turned-on, the customer must openan account with SPSL. An application to open an account for electricitysupply can be made either personally, through the post or Internet. A sampleof the Application(s) for the Supply of Water, Electricity and/or Gas andGIRO forms to be completed are shown in Appendix 6 and Appendix 7respectively.

4.9.2.2 Application in person can be made at SPSL’s Customer Services Centre, UpperFirst Storey, 111 Somerset Road #01-10, Singapore Power Building; or atSPSL’s Application Counter at Woodlands Civic Centre #02-06, 900 SouthWoodlands Drive, Singapore 730900.

Applications through the post should be addressed to:Manager (Customer Services Branch)SP Services LtdP O Box 341 Orchard Post OfficeSingapore 912312

4.9.2.3 The following documents must be shown at the time of application in person:

4.9.2.3.1 Identity Card/Passport of owner/tenant/authorised signatory*

4.9.2.3.2 Copy of Business/Company Registration Certificate*

4.9.2.3.3 Documentary proof of occupation of premises, e.g. rent receipt or sales letterfrom HDB confirming the purchase of the premises

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4.9.2.3.4 Bank account book to effect GIRO deduction from the account

* applicable for account in company’s/organisation’s name

4.9.2.4 For applications submitted through the post, copies of the above-mentioneddocuments must be enclosed.

4.9.2.5 An initial deposit is payable on opening an account. Customers may call theCustomer Enquiry Auto-Link (U-Link) at 1800-7380038 to enquire about theopening and closing of accounts.

4.9.2.6 For domestic premises, the deposits are as follows:

TYPE OF PREMISES DEPOSIT

GIRO Non-GIRO

Customers Customers

HDB 1/2 rooms S$ 40 S$ 60HDB 3/4/5 rooms S$ 70 S$ 100HDB Executive/HUDC/Terrace S$ 100 S$ 150Private Apts/Semi-Detached/Condo S$ 150 S$ 250Bungalow/Penthouse/Townhouse S$ 250 S$ 400

4.9.2.7 The deposit for non-domestic premises varies according to the electricityload required, the estimated water consumption, the floor area and type ofoperations. For enquiry on the amount of deposit required, customers cancall 1800-2356841.

4.9.3 Handover Of Completed Substation

4.9.3.1 The handover of substation to PowerGrid for installation of equipment is akey event, which determines the earliest date when supply can be madeavailable.

4.9.3.2 One week prior to the intended handover of the substation, the LEW mustsubmit a Request to Handover Substation form (Appendix 5) to SeniorManager (Customer/Distribution Projects), PowerGrid. Before this is done,the LEW must ensure that the customer/developer has accepted the termsand conditions of connection, including the payment of necessary charges.

4.9.3.3 It must be emphasised that PowerGrid will take over the substation onlywhen it is completed in accordance with plans and specifications approvedby PowerGrid and the relevant authority. It is particularly important that theaccess to the substation must be clear and passable for transportation ofheavy equipment.

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4.9.3.4 Floor frames are needed for some types of switchgear. Prior to the final renderingof the switchroom floor, the LEW is to notify the project engineer-in-charge tomake arrangements for the floor frame to be installed, if it is necessary.

4.9.3.5 Requirements on handover of a completed transmission substation are givenin General Requirements for EHV Substation (Appendix 17).

4.9.4 Installation Of Current Transformer Operated Meters

4.9.4.1 For supply capacity exceeding 75kVA, current transformer operated metersare required. The LEW is required to provide the three metering currenttransformers and a pre-wired metering panel on the customer’s intakeswitchboard complete with Meter Section approved type test block, 6A 10kAMCB and pilot lamps and metering cables to the busbars.

4.9.4.2 On the day the LEW arranges with SPSL for a date for energisation of theservice connection, he should also bring the letter of appointment forenergisation of the service connection to Meter Section to arrange for theinstallation of meters.

On the appointed day of meter installation, the LEW or his representativemust be present to provide a 230V 13A single phase supply for testing of themeters.

4.9.5 Procedure For Application For Licence To Use

Or Operate An Electrical Installation

4.9.5.1 General

4.9.5.1.1 Under the Electricity Act, electrical installations in non-domestic premises,residential buildings and condominiums with an approved load greater than45kVA are required to be licensed. In addition, certain premises classifiedas engaging in dangerous trades, are also required to be licensed even thoughthey may have approved electrical loads not exceeding 45kVA.

4.9.5.1.2 Application forms for electrical installation licences are available at EnergyMarket Authority, 111 Somerset Road, #11-06, Singapore Power Building,Singapore 238164, or via the EMA website at www.ema.gov.sg.

4.9.5.2 Conditions For The Issue Of The Licence

4.9.5.2.1 Conditions for the issue of the electrical installation licences are governedby EMA.

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4.9.5.2.2 The minimum grade of LEW required to take charge of the electrical or supplyinstallation is determined by the total approved load. The grades of ElectricalWorkers and their authorisation conferred under the respective EMA licencesare:

Grades of Authorisation

Electrical Workers Design Maintain/Operate

Electrician 45kVA 45kVATechnician 150kVA 500kVAEngineer No limit Subject to licence conditions

4.9.5.3 Submission Of EMA Forms

4.9.5.3.1 The relevant application forms are to be completed and submitted to EMAwith the necessary licence fees through the LEW in charge of the electricalinstallation. This must be done no later than 2 weeks before the date of theturn-on of the electricity supply.

4.9.5.3.2 The validity of the licence is for a period of 12 calendar months.

4.9.6 Procedure For De-Energisation/Disconnection Of Service Cables

4.9.6.1 De-Energisation Of Service Cable For Maintenance Purpose

4.9.6.1.1 The LEW who needs to de-energise an existing service cable for the purposeof maintenance or upgrading of the customer’s installation must submit theADRE form to PowerGrid 7 business days in advance (Appendix 19).

4.9.6.1.2 The SDRE form (Appendix 20) must be used to ensure the service cable issafely isolated after de-energisation and fit to be energised before re-energisation. Both PowerGrid’s officer in-charge and the LEW must dulycomplete and sign Part I and Part II of the form after de-energisation andbefore re-energisation of the service cable respectively.

4.9.6.2 Disconnection Of Service Cables Upon Closing Of Account

4.9.6.2.1 The customer must close the account with SPSL.

4.9.6.2.2 The customer must write to SPSL for disconnection of service cables andremoval of electricity meters.

FM

For Contestable Customers, an advance notice of 14 business days is required.

FM

For Contestable Customer, the LEW must duly complete and sign Part III of the SDRE

FM

FM

FM

FM

form.

FM

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Customer’s Installation Requirements

5.1 REQUIREMENTS FOR HV AND LV CONNECTION (22kV AND BELOW)

5.1.1 Short-Time Withstand Current Ratings Of Switchgear

5.1.1.1 For electrical installations taking electricity supply directly from PowerGrid’snetwork, the customer’s main supply incoming switchgear must comply withthe following short-time withstand current ratings:

5.1.1.1.1 For supply at 22kV– 25kA for 3 sec

5.1.1.1.2 For supply at 6.6kV– 20kA for 3 sec

5.1.1.1.3 For supply at low voltage:a) Single-Phase 230V– 6kA for supply capacity up to 15kVA– 9kA for supply capacity more than 15kVA and up to 23kVA

b) 3-Phase 400V– 9kA for supply capacity up to 75kVA– 25kA, 3 sec for supply capacity more than 75kVA and up to 180 kVA– 36kA, 3 sec for supply capacity more than 180kVA

Note: The 3-second duration is not applicable to switchgear incorporatingdirect acting tripping devices.

5.1.1.2 For electrical installations taking electricity supply from the landlord’s ormanagement corporation’s electrical installations, the LEW in-charge mustensure that the customer’s main supply incoming switchgear is capable ofwithstanding the prospective short-circuit current at the connection point.

Customer’sInstallation Requirements5

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5.1.2 Protection Requirements

5.1.2.1 Typical schemes and the protection requirements for a customer’s HV andLV main incoming switchgear taking electricity supplies from PowerGrid’ssystem are shown in Appendix 18. It must comply in general to conditionsas set out in the Transmission Code, Section 6.3 and Appendix F3.

5.1.2.2 For electrical installations taking electricity supply from the landlord’s ormanagement corporation’s electrical installations, advice on protectionrequirements must be sought from the LEW responsible for the respectivelicensed electrical installation.

5.1.2.3 Protection Requirement For 22kV And 6.6kV Customer Connection

The main protection for the 22kV and 6.6kV customer connection must bepilot wire differential protection. The current transformers of ratio 500/5must be of Class X and the CT secondary star-point must be towards theprotected line. The standard overcurrent/earth fault setting for the incomeris shown in Appendix 18.

The LEW of the customer installation is responsible for:

5.1.2.3.1 proper specification, setting/commissioning of the protection system at thecustomer incomers, and

5.1.2.3.2 ensuring that the 22kV circuits within the customer installation are equippedwith unit protection for fast fault clearance, inclusive of fault at cableterminations.

5.1.2.4 Protection Requirement For LV Supply Connection

The customer's incoming circuit breaker shall be set according to the approved load. For

approved load exceeding 300A, external overcurrent relays of IDMTL or DTL characteristics

and earth fault protection (DTL) must be provided at the incoming switchgear. The current

transformer must be of Class 5P10, 15 VA or better. Details are shown in Appendix 18.

5.1.2.5 Every low voltage electrical installation of supply capacity exceeding 75kVA must be provided with short-circuit protection in the form of directacting trip element at the incoming switchgear as follows:

Approved Load Direct Acting Trip Setting

Above 1500A Up to 4,500A400A < Approved Load < 1,500A Up to 3,200A260A < Approved Load < 400A Up to 2,400A200A < Approved Load < 260A Up to 2,000A200A and below Up to 1,200A

Alternatively, a backup HRC fuse may be used in place of direct acting trip.

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5.2 REQUIREMENTS FOR EHV CONNECTION (230kV AND 66kV)

5.2.1 Short-Time Withstand Current Ratings Of Switchgear

For electrical installations taking electricity supply directly from PowerGrid’snetwork, the customer’s main supply incoming switchgear must comply withthe following short-time withstand current ratings:

5.2.1.1 For 230kV switchgear– 63kA (1 sec)

5.2.1.2 For 66kV switchgear– 40kA (3 sec)

5.2.2 Protection Requirement For 66kV And 230kV Customer Connection

5.2.2.1 General

5.2.2.1.1 The protection system for the connections has to comply in general to theconditions as set out in the Transmission Code.

5.2.2.1.2 All circuits connected to PowerGrid’s transmission network, inclusive ofbusbars for 230kV and above, must be provided with unit protection for fastfault clearance.

5.2.2.1.3 Engineering details and protection settings will be discussed with thecustomer during the project implementation.

5.2.2.1.4 The relays used for a unit protection scheme, and the characteristics of itsassociated current transformers should be matched. For reason ofobsolescence or availability, the type of protection relays and the protectionschemes is subject to review and confirmation during the consultation period.

5.2.2.1.5 Wherever applicable, signalling equipment is to be provided for tele-protection function and for end-to-end transfer of intertrip and interlocksignals.

5.2.2.1.6 Generally, the star-point of the current transformer secondary circuit mustbe towards the protected object/zone.

5.2.2.1.7 Generally, the location of the current transformers for the circuit and that ofthe installation’s busbar protection system for 230kV and above must beoverlapped across the circuit breaker to eliminate protection blind zone.

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5.2.2.1.8 Current transformers supplied for unit protection must be rated in accordancewith IEC 60044 Part 1 & 6, BS 3938. They must be adequately dimensionedand of an accuracy class meeting the specified relay’s requirement. Thecharacteristic of the current transformers installed at both ends of theconnected circuit must be closely matched with each other to ensure stability.

5.2.2.2 The settings for the backup protection for the 66kV customer incomer mustgenerally be as follows:

RECOMMENDED RELAY SETTING FOR 66kV CUSTOMER INCOMER

Protection Relay General Setting

Overcurrent Protection CT Ratio SettingFeeder Circuit (1,000/5) 150% 0.15

( 800/5) 200% 0.15Feeder Transformer Circuit (1,000/5) 100% 0.20 Hi-Set: 27A(for 75MVA transformer) ( 800/5) 125% 0.16 Hi-Set: 34AEarth Fault ProtectionFeeder Circuit (1,000/5) 10% 0.10

( 800/5) 15% 0.10Feeder Transformer Circuit N/A(for 75MVA transformer)

Notes:– The co-ordinated setting for the backup protection is applicable to the standard

protection scheme proposed for a feeder or feeder-transformer type customerconnection and is applicable to radial feed connection only (Refer to Appendix 18).

– The overcurrent and earth fault setting are subject to periodic review by PowerGrid.

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Metering Requirements

6.1 GENERAL

6.1.1 All metering requirements must comply with EMA’s Metering Code.PowerGrid will determine the location where the supply line terminates inthe premises, based on ease of accessibility to SPSL and PowerGrid personnel.

6.1.2 The developer or customer bears the cost of providing and maintaining themeter boards, miniature circuit breakers (MCBs), isolators and wiring forinstallation of meters. The meters are supplied and maintained by PowerGrid.

6.1.3 Meters can be mounted on any of the following types of meter boards:

6.1.3.1 Teak board or any hardwood board chemically treated against attacks bytermites. Plywood should not be used. The meter board must be at least20mm thick and rigidly fixed with a minimum of 4 fixing screws.

6.1.3.2 Metal panel with nylon inserts accurately positioned to accommodate themeter.

6.1.3.3 Glass reinforced polyester base fitted with nylon inserts accurately positionedto accommodate the meter.

If item 6.1.3.2 or 6.1.3.3 is provided, PowerGrid’s Meter Section has to beconsulted on the locations of the nylon inserts.

6.1.4 The LEW must ensure that all metering requirements are complied with,and submit, at the planning stage, all relevant drawings on meter locations,meter board size, meter rooms, meter compartments/riser ducts/cupboard,etc to Meter Section for approval. Sample units of each approved type ofmeter compartment/riser duct/cupboard and meter board must be providedfor final inspection and approval by Meter Section before meters are installed.

MeteringRequirements6

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6.1.5 If the doors of centralised meter rooms, meter gate posts, meter compartments/riser ducts/cupboards, etc are to be locked, they must be fitted with locksetswhich can be opened with one of the following master keys:

6.1.5.1 Abloy master key code reference MK 911047

6.1.5.2 Chubb (Union) master key code reference G1HBG

6.1.5.3 Yale master key code reference MK48

The doors of meter rooms/compartments must be able to be opened from theinside without the need to use a key or other devices/tools.

6.1.6 All access doors to meter rooms/compartments/riser ducts/cupboards, etcmust have a clear access opening of at least 600mm (width). The doors mustbe fitted with door knobs or handles.

6.1.7 Security access systems installed in any premises must not impede accessby SPSL and PowerGrid personnel.

6.2 LOCATION OF METER

6.2.1 General

6.2.1.1 The service board accommodating PowerGrid’s service MCBs and metersmust be located near the termination of the service line. The meter/serviceposition must be easily accessible at all times to SPSL and PowerGridpersonnel for maintenance and reading of meters.

6.2.1.2 Meters must be installed in a safe location where they will not be damagedor be a cause of danger to personnel (viz, in a clean and dry location, notexposed to weather, mechanical damage, vibrations, extremes of temperatureor dampness).

6.2.1.3 The height of the meter on the meter board must be between 1.0m and 1.8mabove ground level, and the depth of the compartment for installation ofmeters must be between 200mm and 300mm.

It is advisable that the service board is housed in an approved box of non-combustible high-impact material to give added protection to the meteringequipment and enhance safety.

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6.2.2 Grouping Of Meters

Meters must be installed outside each tenant unit for ease of meter reading,maintenance, etc. Where this is not possible for practical reasons, metersmay be grouped together in easily accessible centralised meter rooms ormeter compartments/riser ducts/cupboards in multi-metered premises (e.g.residential, office, shopping or industrial high-rise building/complex).

6.2.3 Meters In Meter Compartments/Riser Ducts/Cupboards

6.2.3.1 Meters are to be grouped on the same floor as the tenant units.

6.2.3.2 There may be more than one group metering location on each floor.

6.2.3.3 There must be adequate lighting in the group meter location to facilitatemeter installation/maintenance and meter reading.

6.2.3.4 Meter boards in meter compartments/riser ducts/cupboards must be suchthat meters can be mounted facing the doors.

6.2.3.5 All meter compartments/riser ducts/cupboards where meters are installedare to be clearly and permanently labelled. Tenant unit numbers on permanentlabels must be fixed adjacent to their respective meters.

6.2.3.6 Meter compartments/riser ducts/cupboards housing the meters must haveclear glass windows provided on the doors, if these are locked, for ease ofmeter reading. The window for each meter must not be less than 200mm(W) x 300mm (H) x 6mm (thickness) and must be correctly positioned infront of where the meter is to be installed. Plastic windows and UV resistantpolycarbonates are not acceptable. Full glass doors are not acceptable.

6.2.4 Meters In Centralised Meter Rooms

6.2.4.1 The height of the meter board or panel must be such that meters can bemounted with the highest row not exceeding 1.8m above floor level and thelowest row not less than 1m above floor level.

6.2.4.2 There must be standing space of at least 700mm in front of the meter panel.However, if the meters are mounted on a free-standing panel, a clearance of700mm all round the panel is required.

6.2.4.3 The meter board or panel must be rigidly and vertically mounted. The doorsof the panel must be hinged.

6.2.4.4 The meter room must not be used as a storeroom.

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6.2.5 Meters Installed In Landed Properties

6.2.5.1 The meters and service cables must be installed in a weatherproofcompartment located at the gate pillar or perimeter wall. For supply capacityup to 100A 3-phase, the technical requirements for this compartment are asgiven in Appendix 24. For supply capacity greater than 100A 3-phase wherea CT-operated meter will be installed, the LEW has to submit the technicalrequirements to Meter Section for approval.

6.2.5.2 If there is no gate pillar or fencing around the perimeter of the landedproperties, meters must be installed inside a weatherproof meter box/compartment and easily accessible to SPSL and PowerGrid personnel. Metersmust not be installed inside the house.

6.3 METER/SERVICE BOARD SPECIFICATIONS (SINGLE-PHASE AND 3-PHASE

SERVICES, NOT EXCEEDING 100A PER PHASE)

The meter/service board for PowerGrid’s service MCBs and meters must beas specified in Section 6.1.3 and in accordance with the drawings inAppendices 25, 26 and 27.

6.4 WIRING, LAYOUT OF METERS, MCBS, ETC IN CENTRALISED METER

ROOMS, METER COMPARTMENTS/RISER DUCTS/CUPBOARDS

6.4.1 All wiring leading in and out of the group meter location must comply withSS CP5. The landlord’s wiring must be segregated from the tenant’s wiring.

6.4.2 Meters are to be mounted together with their associated service MCBs/neutralconnectors such that each meter can be visually identified with its associatedservice MCBs. Each meter position must be clearly labelled according to thetenant unit number. There should be a space of 70mm between verticallymounted meters.

6.4.3 Meters are to be mounted in neat vertical columns and/or horizontal rows.

6.4.4 Service MCBs must be sealable. MCBs must be clearly labelled according tothe tenant units served. The labelling must also correspond to the labelsused for the meters.

6.4.5 All wiring on the meter boards from service MCBs/neutral connectors to themeters and from the meters to the customer’s main switches must be neatlyrun on the surface – horizontally and/or vertically.

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6.5 SUBMISSION OF LAYOUT PLANS

The layout of the meter rooms, meter compartments/riser ducts/cupboardstogether with the meter board drawings and plans of the units served, mustbe submitted at the planning stage by the LEW for approval by Meter Section.

6.6 METERS FOR 3-PHASE LOW VOLTAGE CONNECTION

(EXCEEDING 100A PER PHASE)

6.6.1 Meters for connections exceeding 100A per phase are operated from meteringcurrent transformers and are to be fixed on a pre-wired metering panel onthe customer’s main switchboard. However, where the length of theconnecting leads are not excessive, the pre-wired metering panel may, withthe prior approval of Meter Section, be wall-mounted away from the mainswitchboard or in a separate meter room. The pre-wired metering panel withMeter Section approved type test block, 6A (10kA) MCB, pilot lights andmetering cables to the busbars and the three metering current transformers,must be provided by the customer. Drawings of the meter panel can beobtained from Meter Section at St James District Office, Telok Blangah Road.

6.6.2 Meter Panel Compartment Specifications

6.6.2.1 Meter panels must be of mild steel of at least 1.6mm thickness or othermaterials subject to approval by Meter Section.

6.6.2.2 The panels must be detachable and of a size given in Appendix 28.

6.6.2.3 The compartments must have a minimum depth of 100mm between coverand base.

6.6.2.4 There must be openings with appropriate bushing for the meter wires.

6.6.2.5 The cover must have at least 3 hinges and be able to swing and open out atleast 90o.

6.6.2.6 Facilities for sealing must be provided. Methods of sealing are illustrated inthe drawings in Appendix 29.

6.6.3 Meter Installation Requirements

6.6.3.1 The switchboard must be complete and securely mounted in its final positionbefore meters can be installed.

6.6.3.2 The top of the meter panel must not exceed 2.0m from the ground.

6.6.3.3 A 50mm x 50mm trunking of metal or other approved material between theswitchboard and the meter panel must be provided to house the meter cablesif the latter is installed away from the customer’s main switchboard.

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6.6.3.4 A 6.0mm tap-hole plus screw/washer on each busbar must be provided tofacilitate connection of the voltage cables to the meter voltage coils.

6.6.3.5 If the meter panel is away from the customer’s main switchboard, sealable30A HRC fuse for each phase and a sealable 3-pole ganged MCB of 6A 10kArating must be provided on the front of the switchboard panel near themetering CT enclosure for the protection of the meter voltage wiring. TheMCB must be appropriately labelled.

6.6.3.6 Mounting of metering current transformers must be as follows:– Current transformers must be mounted on jumpers for easy installation.– Bakelite clamps must be provided to secure the meter current transformers

in position.– Adequate insulation between the metering current transformers and the

busbar must be provided.– The metering current transformers and meter voltage tap off points must

be installed after the incoming connection main protection currenttransformers.

6.6.3.7 Enclosure

A rigid enclosure of mild steel plate of thickness not less than 1.6mm mustbe provided solely for housing the metering current transformers and voltagetap off points. The enclosures must have facilities for sealing. A typicalconstruction of the enclosure is shown in Appendix 30.

6.7 HIGH VOLTAGE/EXTRA HIGH VOLTAGE METERING

6.7.1 General Requirements

6.7.1.1 The customer is required to provide, install and maintain, at his own expense,current transformers, voltage transformers, a pre-wired metering panel withtest blocks, MCBs, pilot lamps and accessories, at his receiving HVswitchboard. These must meet PowerGrid’s requirements. Drawings of themetering panel can be obtained from Meter Section at St James District Office,Telok Blangah Road.

6.7.1.2 All metering current and voltage transformers must be used solely forPowerGrid’s revenue metering equipment. No other apparatus of the customeris permitted to be connected to such metering current and voltagetransformers. However, a voltmeter may be allowed to be connected via a100mA fuse (sealable) subject to approval by Meter Section.

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6.7.1.3 The customer must also provide a metering kiosk to be located close to wherethe metering current and voltage transformers are installed, such that theroute length of the cables from the current and voltage transformers to themetering kiosk does not exceed 10m. Where this cannot be complied withbecause of site constraints, the LEW must consult Meter Section concerningthe type and size of cables to be provided and installed by the customer.

6.7.1.4 The requirements for the kiosk are given in Appendices 31 and 32. Theaccess to the metering kiosk must be from outside the HV switchroom andfitted with any one of PowerGrid’s approved master lock series as specifiedin Section 6.1.5.

6.7.1.5 The customer must provide an appropriate metering panel of a size given inAppendix 33 and install a 50mm x 50mm trunking of metal or other approvedmaterial between the customer’s HV switchboard and the metering paneltogether with the required type and size of cables.

6.7.1.6 Facilities for sealing connections of all metering wire termination at thecustomer’s HV switchboard must be provided.

6.7.1.7 A schematic and wiring diagram of the customer’s switchboard must besupplied to facilitate installation of the meters.

6.7.2 Specifications For Metering Current Transformers

6.7.2.1 The customer will provide two metering current transformers of 30VA burdenfor 66kV connection or 15VA burden for connection at 6.6kV or 22kV. Thesemust be of accuracy class 0.5 complying with SS 318 or IEC 60044-1.

6.7.2.2 The current transformers are to be installed on the red and blue phases atthe cable end for each of his receiving switchboard. The current transformerratio will be determined by PowerGrid based on the customer’s loadrequirement. For connection at 230kV, the LEW will liaise with Meter Sectionon metering requirements.

6.7.2.3 The rated short-time current rating must not be less than 63kA 1 second,40kA 3 seconds, 25kA 3 seconds or 20kA 3 seconds for connection at 230kV,66kV, 22kV or 6.6kV respectively.

6.7.3 Specifications For Voltage Transformers

6.7.3.1 For each of the customer’s receiving switchboard, one of the following voltagetransformers must be provided:

6.7.3.1.1 One unit 3-phase 66kV/110V, 22kV/110V or 6.6kV/110V voltage transformerof 100VA burden per phase, connected star-star with the yellow phaseterminal of the secondary winding earthed, or

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6.7.3.1.2 Three units single-phase,66kV 110V or 22kV 110V or 6.6kV 110V√3 √3 √3 √3 √3 √3

Voltage transformers of 100VA burden per phase, connected star-star withthe yellow phase terminal of the secondary winding earthed, or

6.7.3.1.3 Two units single-phase 66kV/110V, or 22kV/110V or 6.6kV/110V voltagetransformers of 180VA burden per phase, ‘V’ connected with the yellowphase terminal of the secondary winding earthed.

6.7.3.1.4 Voltage transformers must be of accuracy class 1.0 complying with BS3941or IEC 60186.

6.7.3.1.5 The secondary wiring of the voltage transformer must terminate in a sealableMCB incorporated in the switchgear panel. The MCB must be rated at 6A,110V, 50Hz with breaking capacity not less than 10kA and the terminals ofthe MCB must be able to accept cables of cross section up to 6mm2.

6.7.3.1.6 The voltage transformers must be fused and adequate stock of spare high-voltage fuses must be kept by the customer.

6.7.3.2 All metering current transformers and voltage transformers together withtheir manufacturers’ test certificates must be submitted for testing andapproved by Meter Section at least 2 weeks before connection is required.Voltage transformers at 66kV and 230kV are exempted from testing and onlythe manufacturer’s test certificates have to be submitted.

6.8 MASTER AND SUB-METERING SCHEME

All multi-metered premises will be metered under master- and sub-meteringarrangement. Each individual unit within the premises must be meteredindividually under their respective Sub-meter whereas the landlord or theowner of the premises will be metered under the Master-meter. The landlordor owner will pay the amount of electricity representing the differencebetween the amount of electricity consumed and registered by the Master-meter and the aggregate of the amount of electricity consumed by theoccupants of the individual units within the premises.

6.9 METERING REQUIREMENTS

6.9.1 Low Voltage Customer

6.9.1.1 Single Customer – More Than 75kVA

6.9.1.1.1 The customer will provide three metering current transformers (CTs) of 5VAburden and accuracy class 0.5 complying with SS 318 or IEC 60044-1 and thepre-wired metering panels on the customer’s intake switchboard. The pre-wired

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metering panel must be fitted with PowerGrid approved type test block, MCBand pilot lights and connected with metering cables to the CTs and busbars.The CTs together with their manufacturer’s test certificates must be submittedfor testing and approval at least 2 weeks before connection is required.

6.9.1.1.2 A request for appointment to fix meters should be made only after the LEWhas arranged with SPSL for a date to energise the service connection.

6.9.1.1.3 Meter Section will arrange to install the meters upon production of theenergisation appointment letter issued by SPSL and requires at least 4business days before the energisation of service connection date.

6.9.1.2 Multi-Metered Buildings

6.9.1.2.1 Submission of floor plans of building showing the locations of meteringkiosks, meter room, meter compartments/riser ducts/cupboards.

6.9.1.2.2 Submission of dimensioned metering layout showing the plan, front andside elevations of the meter boards/rooms/compartments/riser ducts/cupboards, etc.

6.9.1.2.3 Arrangements for sample units of each approved type of meter compartment/riser duct/cupboard and meter board to be inspected and approved by MeterSection before meters are installed.

6.9.1.3 Landed Housing Development

6.9.1.3.1 Submission of site plans of building showing the locations of metercompartments at gate pillars.

6.9.1.3.2 Submission of dimensioned metering layout showing the plan, front andside elevations of the meter compartments in the gate pillars.

6.9.1.3.3 Arrangement for sample units of each approved type of meter compartmentand meter board to be inspected and approved by Meter Section before metersare installed.

6.9.2 High Voltage/Extra High Voltage Customer

6.9.2.1 The revenue metering equipment will be installed at the customers’ end ofthe service connection. The customer will provide a suitable metering kioskat his intake station, and metering CTs and VTs for each of his receivingswitchboard. The metering CTs ratio will be based on declared demand asshown in 6.9.2.6.

6.9.2.2 The metering CTs and VTs are to be used solely for revenue metering purposes.The CTs and VTs up to 22kV supply are to be sent together with themanufacturer’s test certificates to Meter Section for testing and approval at

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least 2 weeks before supply is required. For supply at 230kV, the LEW has toliaise with Meter Section on metering requirements.

6.9.2.3 The VTs, after re-installation onto customer’s switchgear, have to be testedand phased out, and a test report as per Appendix 34 submitted to MeterSection for approval before installation of meters.

6.9.2.4 The customer will provide and maintain, at its own cost, a fixed telephoneline to the metering kiosk to be used exclusively for the purpose of remotemeter reading. This telephone line must be terminated in a standard telephonesocket at the metering kiosk. Provision of this telephone line must be madebefore installation of meters.

6.9.2.5 If the customer is unable to provide the fixed telephone line due to siteconstraint, a GSM line can be considered subject to approval by Meter Section.

6.9.2.6 Based on the contracted capacity stated in the application form, the customeris required to provide the correct metering CTs as follows:

Contracted Capacity CT Ratio

MW

22kV Service Connection 0.0 – 0.8 50/25/50.81 – 1.7 100/50/51.71 – 2.5 150/75/52.51 – 3.2 200/100/53.21 – 5.0 300/150/55.01 – 6.6 400/200/5

6.51 – 10.0 500/300/566kV Service Connection 0.0 – 5.0 100/50/5

5.01 – 10.0 200/100/510.01 – 20.0 400/200/520.01 – 30.0 500/300/530.01 – 40.0 800/400/540.01 – 80.0 1,000/500/5

6.10 CONTESTABLE CUSTOMERS

6.10.1 Eligibility

The eligibility of contestable customers are determined by EMA.

6.10.2 Additional Requirements For Contestable Customers

A contestable customer must provide and maintain at its own cost a fixedtelephone line to be used exclusively for the purpose of remote meter reading.The LEW must liaise with Meter Section for the location and termination ofthis telephone line.

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Appendices

■ Appendix 1

APPLICATION FORM For official use only FOR CONNECTION TO POWERGRID

TRANSMISSION SYSTEM Application Number. :

Date Received :

To : SP Services Ltd 111 Somerset Road #06-05 Singapore Power Building Singapore 238164

PART 1 APPLICANT’S DETAILS Sub-metered consumers (tenants) are not eligible for this application. All tenants in multi-metered premises are required to obtain supply from their landlord/MCST or HDB for HDB premises.

I request you to provide/upgrade the load connection service to my premises as given in Part II by my Licensed Electrical Worker undertaking the project

Name of Company/Applicant*: ________________________________________________ ROC/NRIC No: ________________ Name of Authorised Person & Designation* ___________________________________________________________________ Forwarding Address : ________________________________________________ Postal Code : Singapore______________

Tel : _________________ Fax : __________________ Mobile Phone : ____________________ Pager ________________

Email : _______________________ Signature of Applicant : _______________________________ Date : _______________

PART 2 INSTALLATION DETAILS – (To be completed by LEW)

Project Description : ________________________________________________________________________________________ Site Address : ___________________________________________________ Postal Code : Singapore ________________ Utility Account No (existing) : ______________________________ Existing Approved Load : _____________________ kVA/kW* Any previous Consultation? Yes / No* If Yes, please provide Consultation No : __________________

TYPE OF CONNECTION (Please tick appropriate box)

New Connection Upgrading the existing service cable Temporary Connection

Change of intake connection point

TYPE OF DEVELOPMENT (Please tick appropriate box)

Industrial Commercial Residential

Others (Please specify) : _______________________________________________________ Type of Business Activity (Brief Description) : __________________________________________ Voltage Sensitive? Yes / No *

LOAD REQUIREMENT (One intake connection point per premises)

Total load requirement (to include existing load, if any)

30A/60A/100A* 30A/60A/100A* __________ kVA at 400V three-phase 230V single-phase 400V three-phase

22kV 66kV/230kV* (min 1,700kW for 2 HV services, min 12,750 kW for 4 HV services) (min 25.5MW for 66kV,min 85MW for 230kV) Contracted Capacity of _____________________ kW at ________________________ kV via ___________ service cable(s). Initial Contracted Capacity of ________________kW (shall not be less than ¼ of the Contracted Capacity) for ______ months

(not exceeding 12 months) Total Load Requirement: ______________________________ kW (for multi-metered premises only)

For multi-tenanted installation with the exception of HDB residential installation, the metering scheme shall be designed as Master/Sub-metering scheme.

Target date of Energisation : ________/_________/__________ Estimated ultimate load _____________________ kVA/kW*

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O TO BE COMPLETED FOR INSTALLATION EXCEEDING 45kVA

Total Land Area : ____________________________ m2 Gross Floor Area : _______________________________ m2

PLANS AND DETAILS (Mandatory)

1 copy of Architect’s site and location plan 1 copy of plan showing proposed customer’s intake connection point. Details of the type, floor area & designed load of individual premises for multi-metered premises

PART 3 LEW DETAILS

I confirm that the above information is correct and agree to advise SP Services should there be subsequent changes.

Name of Authorised LEW : __________________________________ Licence Number:__________________________________ Registered Forwarding Address :________________________________________________________________________________

_____________________________________________________ Postal Code : Singapore ________________________________ Tel : _____________________ Fax : __________________ Mobile Phone ______________________ Pager __________________

Email : ____________________________________________________________________________________________________

Signature of Authorised LEW ______________________________________________________ Date _______________________

* Delete where not applicable

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Appendix 2 CONSULTATION FORM For official use only FOR CONNECTION TO POWERGRID

TRANSMISSION SYSTEM Consultation Number. :

Date Received :

To : PowerGrid Ltd 111 Somerset Road #08-05 Singapore Power Building Singapore 238164

CONSULTATION DETAILS Sub-metered consumers (tenants) are not eligible for this application. All tenants in multi-metered premises are required to obtain supply from their landlord/MCST or HDB for HDB premises.

Reference to the consultation, I hereby enclose one copy of site & location plans including proposed customer’s intake connection point Drawing No. ____________________________________________________________ for your advice on connection requirements.

SITE DETAILS

Connection Applicant/Developer* : _____________________________________________________________________________ Project Description : _____________________________________________________________________________ Site Location – Lot & Mk No : _____________________________________________________________________________

Street Name : __________________________________________________________ Blk/Unit No :_______________________

LOAD REQUIREMENT (One intake connection point per premises)

New Connection Upgrading the existing service cable Temporary Connection

Change of intake connection point Other Services (Please specify):________________________________________

Type of Premises : Industrial/Commercial/Residential/Others*_________________________Gross Floor Area(m2): _____________ Type of Business Activity (for non-residential premise only) : _______________________________ Voltage Sensitive? Yes / No * Existing Utility A/C No.(if any) : ________________________________ Existing Approved Load (kVA) : ________________________________ at 230V/400V/22kV/66kV/230kV* Load Requirement (kVA) : ____________________________________ at 230V/400V/22kV/66kV/230kV*

Target date of Energisation :__________/___________/__________ Previous consultation No. (if any) : _________________

Additional information : ______________________________________________________________________________________

______________________________________________________________________________________

LEW DETAILS I confirm that the above information is correct and agree to advise PowerGrid should there be subsequent changes.

Name of Authorised LEW : _____________________________________ Licence Number:_______________________________ Company Forwarding Address :________________________________________________________________________________

___________________________________________________________ Postal Code : Singapore __________________________ Tel : ______________________ Fax : __________________ Mobile Phone : _____________________ Pager : _______________

Email : ___________________________________________________________________________________________________

Signature of Authorised LEW ______________________________________________________ Date ______________________ * Delete where not applicable

52

■ Appendix 3

Form CS/3 Letter of Consent from the Landlord/Management Corporation

To: SP Services Ltd 111 Somerset Road #06-05 Singapore Power Building Singapore 238164 ELECTRICITY SUPPLY TO: ______________________________________________________________________________ (Full Address of the Customer)

FOR:___________________________________________________________________________________________________ (Name of Customer)

TOTAL LOAD ALLOWED FOR: __________________________________ AT _______________________________ VOLTS

________________________________________________________________________________________________________ PART I 1. I have checked the loading of the electrical installation of the abovementioned building/complex and hereby confirm that the

abovementioned load requirement can be catered for from the rising/horizontal mains system/main switchboard of the building/complex, and the total approved load to the entire building/complex will not be exceeded.

2. I have no objection for the abovementioned load to be connected to the rising/horizontal mains system/main switchboard of the

building/complex. 3. The Electrical Installation Licence No. of the building/complex is ______________________. 4. The electrical installation of the building/complex from which this load is to be connected is Unmetered (i.e. without Master Account) Metered under Master Account No. __________________________________. 5. I will check to ensure that the abovementioned installation is compatible with the electrical installation of the building/complex. ________________________________________________________ Date: _____________________________________ Signature of Licensed Electrical Worker Licence No:_______________________________________________ Tel No: ____________________________________ Name: ___________________________________________________ Address: _________________________________________________ ___________________________________________________________________________________________________________ PART II I hereby give consent for the abovementioned customer to tap electricity supply of a capacity indicated above from the rising/horizontal mains system/main switchboard of the building/complex. ________________________________________________ Date: _______________________________ Signature of authorised person ________________________________________________ ____________________________________

Name Designation Official Stamp of the landlord/developer/management corporation

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▲ 54

■ Appendix 4

FORM CS/3HLetter of Consent from the Housing & Development Board

To : SP Services Ltd

111 Somerset Road #06-05

Singapore Power Building

Singapore 238164

ELECTRICITY SUPPLY TO :

FOR :

TOTAL LOAD ALLOWED FOR : AT VOLTS

PART 1

1 I have checked the loading of the electrical installation of the abovementioned building/complex and hereby confirm that the

abovementioned load requirement can be catered for from the rising/horizontal mains system/main switchboard of the building/complex,

and the total approved load to the entire building/complex will not be exceeded.

2 I have no objection for the abovementioned load to be connected to the risiing/horizontal mains system/main switchboard of the building/

complex.

3 The Electrical Installation Licence No. of the building/complex is .

4 The electrical installation of the building/complex from which this load is to be connected is

■ Unmetered (i.e. without Master Account)

■ Metered under Master Account No.

5 I will check to ensure that the abovementioned iinstallation is compatible with the electrical installation of the building/complex.

Signature of LEW : Date :

Licence Number : Tel No :

Name :

Address :

PART 2

1 I hereby give consent for the abovementioned customer to tap electricity supply of a capacity indicated above from the rising/horizontal/

mains system/main switchboard of the building/complex.

2 The HDB area code is

Date :

Signature of Authorised PersonFor and on behalf of Housing & Development Board

Name : Designation :

Full Address of the Customer

Name of Customer

▲ 55

■ Appendix 5

Request to Handover Substation

Date :

To : PowerGrid Ltd

111 Somerset Road #08-05

Singapore Power Building

Singapore 238164

Attn: Senior Manager

(Customer Projects – East/West/Distribution Projects)

Dear Sir

PROJECT : ELECTRICITY SUPPLY TO

1. In connection with the electrification scheme (SPSL Appln No : ________________ ), I wish to advise that the proposed PowerGrid substation

has been completed in accordance with plans and specifications approved by your Company and the Competent Authority.

2. I confirm that the structural Professional Engineer in-charge has certified that the substation structure is constructed according to the

approved plan to withstand the load specified by your Company.

3. I also certify that the electrical installation at the substation has been inspected and tested in accordance with the requirements of your

Company as follows:

a Earth value of electrode system is ______________ ohms.

b The continuity of each circuit protective conductor is satisfactory.

c All metal conduits have been bonded to earth.

d Polarity throughout the installation is correct.

e All single pole control devices are in live conductors only.

f The insulation resistance of the fixed wiring installation is ___________ Megaohm.

g All flexible cords, switches, fuses, plugs and socket outlets are in good serviceable condition.

h The installation includes ______________ Nos lighting points and _______________ Nos socket outlets.

4. I shall be obliged if you could send your representative for a joint site inspection on _____________________, and thereafter to takeover

the said substation.

Yours faithfully

Signature of Licensed Electrical Worker

Name :

Address :

Tel No :

NB : This form must be submitted one week prior to the date for joint site inspection, which shall normally

take place from 10 am to 12 noon.

▲ 56

■ Appendix 6

SP SERVICES LTD

(Acting for itself and as agent for and on behalf of Public Utilities Board and City Gas Pte Ltd for the supply of utilities)

APPLICATION(S) FOR THE SUPPLY OF WATER, ELECTRICITY AND/OR GAS

Name of Consumer ……………………………………………………………………… NRIC/Passport No. ………………………………

(personal or company) ……………………………………………………………………… Co Reg No. ………………………………

Co Reg Date ………………………………

Address of Premises for ………………………………………………………………………

which supplies are required ……………………………………………………………………… Contact Tel No. ………………………………

Fax No. ………………………………

Mailing Address

(if different from …………………………………………………………………………………………………………………………………

the Premises) …………………………………………………………………………………………………………………………………

1. I/We make application(s) for the following utilities:

■ Water supply from the Public Utilities Board ■ Electricity supply from SP Services Ltd ■ Gas supply from City Gas Pte Ltd

2. I/We agree that each application for a utility, when accepted, will constitute a binding contract between myself/ourselves and Public Utilities

Board/SP Services Ltd/City Gas Pte Ltd (as in the case may be) and I/We agree that each of such contract shall be separate and independent

from each other and shall be separately enforceable.

3. “In the event that I/We make an application for gas at a later date, I/We agree to be bound by the terms and conditions for supply of gas set out in

Part III overleaf and such other additional terms and conditions which City Gas Pte Ltd may, at its absolute discretion, notify and impose. I/We

understand that nothing herein shall be constructed as an offer by City Gas Pte Ltd to supply gas to me/us and that City Gas Pte Ltd has the

absolute discretion to reject my application for gas supply for any reason.”

4. I/We agree to be bound by the terms and conditions specified by each supplier as set out in Part I (Water Supply)/Part II (Electricity Supply)/

Part III (Gas Supply) overleaf.

…………………………………………………………………… ………………………………………………………………………………

Consumer’s Signature/Date Name, Designation & NRIC/Passport No.

Co Stamp (Where applicable) of Person signing for Company

FOR OFFICIAL USE

Name NRIC/Passport No.

Co Reg No.

Address Your A/C No.

Appointment for Turn-on of Supplies

Utility Date Time CC DCI BC FC Code Date

IF YOUR WATER METER IS OUTSIDE YOUR PREMISES, FOR ELECTRICITY TURN-ON, PLEASE WAIT FOR THE TECHNICIAN TO INSPECT THE

YOU NEED NOT BE PRESENT FOR WATER TURN-ON. PREMISES AT THE APPOINTED TIME UNLESS STATED ABOVE.

(“the Consumer”)

(“the Premises”)

▲ 57

■ Appendix 7

SP SERVICES LTDAPPLICATION FORM FOR INTERBANK GIRO

PART 1: FOR APPLICANT’S COMPLETION (fill in the spaces indicated with ❑ )

Date: Name of Billing Organisation:

❑ SP SERVICES LTD

To: Name of Bank: Utilities Account Holder’s Name:

❑ ❑

Branch: Utilities Account Holder’s Number:

❑ ❑

(a) I/We hereby instruct you to process SP Services’ instructions to debit my/our account.(b) You are entitled to reject SP Services’ debit instructions if my/our account does not have sufficient funds and charge me/us a fee for this. You may also

at your discretion allow the debit even if this results in an overdraft on the account and impose charges accordingly.(c) This authorisation will remain in force until terminated by your written notice sent to my/our address last known to you or upon receipt of my/our

written revocation through SP Services.

My/Our Name(s): My/Our Contact (Tel/Fax) Number(s):

❑ ❑

My/Our Bank Account Number: My Signature/Thumbprint:

❑ ❑

(As in Bank’s Records)

Bank Account Holder NRIC No / P/P No:

❑ Our Company Stamp/Signature

❑

(As in Bank’s Records)

PART 2: FOR SP SERVICES’ COMPLETION

Bank Branch SP Services’ Account No. Utilities Account No.

Bank Branch Account No. To Be Debited

PART 3: FOR BANK’S COMPLETION

To: SP Services Ltd

This Application is hereby REJECTED (please tick) for the following reason(s);

❑ Signature/Thumbprint# differs from Bank’s records ❑ Wrong account number

❑ Signature/Thumbprint# incomplete/unclear# ❑ Amendment not countersigned by customer

❑ Account operated by signature/thumbprint# ❑ Others:

Name of Approving Officer Authorised Signature Date

* For thumbprints, please go to the branch with your identification #please delete where inapplicable

■ Appendix 8 FORM CS/5 APPLICATION FOR INSPECTION OF ELECTRICAL INSTALLATION

For official use To: SP Services Ltd 111Somerset Road #06-05 APPLICATION NO:

Singapore Power Building Singapore 238164

PART I I/We, #Mr/Mrs/Miss/Messrs____________________________________________________________________________________ (# Delete as appropriate). (name of applicant/company)

Utility Account No :

_____________________________________________________________________________________________________

request you to provide an electrical installation inspection and install kWh meter. (Please tick if meter is required) Details of my/our application are as follows:

(Please fill in the appropriate box below)

An application for electricity supply service has been submitted earlier and approved. SP Services Application Reference No is: _______________________________________ OR

This is a new application with details as given in Part II by my/our Licensed Electrical Worker undertaking the project. (Form CS/3 or CS/3H shall be attached for supply connection from landlord’s or HDB’s electrical installation.) My/Our particulars:

NRIC number/Company ROC number: ___________________________________________________________________

Name of Authorised Person for Company:_________________________________________________________________ (if applicable)

Forwarding Address: _________________________________________________________________________________

________________________________________________________Postal Code: ______________

Tel:___________________ Fax : ___________________ Mobile phone: ___________________ Pager:_____________

Email: ____________________________ --------------------------------------------------- -------------------------------------------- Signature of Applicant Date

___________________________________________________________________________________________________________ PART II (INSTALLATION DETAILS - To be completed by Licensed Electrical Worker if there is no application submitted earlier) Project Description: ________________________________________________________________________________________

Site Address: ___________________________________________________________________Postal Code: ________________

Type of Application (Please tick the appropriate boxes) New Supply Temporary Supply Upgrading of Supply Downgrading of Supply Extension Rewiring Replacement of switchboard/switchgear Amalgamation Shifting of Meter

Conversion to Master/Sub Metering Scheme

Other Services (Please specify) ………………………………………………………………………………

► 58

■ Appendix 8

Landlord’s installation HDB’s installation Public Lighting Network

Supply PowerGrid Ltd’s (Form CS/3 is to be (HDB's endorsement (Form CS/3 PL is to be Connection from: installation/mains submitted) is required) submitted)

Type of Development: Industrial Commercial Residential Others Type of Business (Brief Description): ___________________________________________________________________ Total supply capacity (including existing requirement, if any) 30/40A# 230V 60A/80A/100A# 230V 30A/60A# 400V .............kVA single-phase single-phase three-phase at 400V three-phase (# Delete as appropriate) PART III DETAILS OF PROPOSED INSTALLATION OR EXTENSION. For HDB residential unit, erasure/amendment to any of the “QTY” figure below is NOT acceptable.)

QTY QTY

Lamp points 30/32A SPN ISO

13A socket outlets 30/32A TPN ISO

15A socket outlets Water Heater Points

15/16A SPN ISO Others

15/16A TPN ISO

20A SPN ISO

20A TPN ISO ( A completed Certificate of Compliance is required to be submitted if a new meter is required.)

Name of LEW : _____________________ LEW Licence No. : _____________ __________________________________ Signature of Licensed Electrical Worker Date : ______________________ Forwarding address (as registered with EMA): __________________________________ Fax No.: ____________________

_______________________________________________________________________ Contact No.: ___________________

Postal Code: ________________ __________________________________________________________________________________________________ PART IV Endorsement by HDB (applicable for HDB residentiaI premises) 1 I have checked the loading of the electrical installation of the abovementioned building/complex and hereby confirm that the abovementioned load requirement can be catered for from the rising/horizontal mains system/main switchboard of the building/complex, and the total approved load to the entire building/complex will not be exceeded. 2 I hereby give consent for the abovementioned customer to tap electricity supply of a capacity indicated above from the rising/horizontal mains system/main switchboard of the building/complex. _______________________________________ Name/designation/signature of authorised person Date: ___________________ for and on behalf of Housing & Development Board

► 59

▲ 60

■ Appendix 9

Types and Layout of Substation

The type of substation required will depend on the customer’s load requirement. SPSL shall endeavour to provide the requirement

of the substation within 10 business days following the receipt of the application form.

Typical layout plans and details for substations of the independent building type are given in Appendices 11 to 14.

As a guide, the types of substations applicable for the various load requirements are as follows:

The functional requirements of the substation structure, however, must be complied with. For example, the minimum clear

height of the cable chamber and switchroom must be 1.5m and 3.1m respectively even if the substation is integrated into a

multi-storey building.

Subject to the layout and access being suitable, the customer may incorporate the substation as part of his main building. The

typical layout plans shown in this handbook depict only the functional requirements.

Primary Distribution Drawings

Voltage Applicable/Substation size

Up to 1,000 kVA at 400/230V 6.6kV Appendices 11

22kV Switchroom 7.6M x 6.2M x 5.6M

Transformer 4.0M x 4.5M x 3.6M

Up to 2,000 kVA at 400/230V 22kV Appendices 12

Up to 5,000 kW at 22kV 22kV Switchroom 6.9M x 6.2M x 5.6M

Load Requirement Type of rooms

▲ 61

■ Appendix 10

Submission of Substation Site and Design Plans

Before construction of the substation, the LEW shall submit to PowerGrid, 2 sets of plans showing the location of the proposed

substation in relation to the rest of the development and detailed layout plans for the substation. One set of plan will be

endorsed and returned to the LEW.

All plans/drawings to be submitted must be on appropriate A1 or A2 size paper and endorsed by the LEW responsible for the

planning, design and supervision of the installation. To facilitate processing, SPSL’s Application Reference Number must be

indicated in all submissions which shall be accompanied by a Checklist for Submission of Substation Plans (Appendix 15)

In the case of re-submission of plans, all amendments (addition/deletion/revision) made must be highlighted in the new set of

drawings and listed out in covering letters.

All plans are to be drawn to scale and dimensions used shall be in metric units.

It is the responsibility of the LEW in charge to ensure that all the requirements as endorsed on the drawings are incorporated

in the architectural and structural plans before construction work of the substation begins.

Substation Site Plans

These plans should show the location of the proposed substation(s) in relation to the surrounding area

and should include the following :

(i) The proposed substation(s)

(ii) The customer’s switchroom(s)

(iii) The proposed PowerGrid’s incoming cable and customer’s service cable routes

(iv) The orientation of other buildings within the development site

(v) The proposed driveway to the substation entrance (to be shaded in red)

(vi) The existing and proposed drains; and

(vii) North-East Gridlines or 2 NE survey coordinates.

Substation Design/Layout Plans

It is mandatory that the drawings must include :

1 The detailed requirements for the design of the substation are listed in Appendix 16. Unless explicit waiver is granted,

these requirements are to be incorporated in the architectural plans.

2 Plan, Front, Rear and Side Elevations of the substation and at least 2 cross-sections showing the surrounding roads,

cable chamber, switchroom beams and clear height, switchroom floor openings, transformer plinths and other pertinent

details.

3 Details of immediately adjoining upper floor, basement as well as adjacent space all around the substation shall be

depicted, if the substation is part of a larger building

▲ 62

■ Appendix 11

6.6KV/LV SUBSTATION

▲ 63

■ Appendix 11

6.6KV/LV SUBSTATION

▲ 64

■ Appendix 11

6.6KV/LV SUBSTATION

▲ 65

■ Appendix 11

6.6KV/LV SUBSTATION

▲ 66

■ Appendix 12

22KV/LV SUBSTATION

▲ 67

■ Appendix 12

22KV/LV SUBSTATION

▲ 68

■ Appendix 12

22KV/LV SUBSTATION

▲ 69

■ Appendix 12

22KV/LV SUBSTATION

▲ 70

■ Appendix 12

22KV/LV SUBSTATION

▲ 71

■ Appendix 13

HEAVY ALUMINIUM LOUVRED DOORFOR ELECTRIC SUBSTATION

▲ 72

■ Appendix 13


▲ 73

■ Appendix 13


▲ 74

■ Appendix 13


▲ 75

■ Appendix 13


▲ 76

■ Appendix 13


▲ 77

■ Appendix 14

GATE DETAILS

▲ 78

■ Appendix 14

GATE DETAILS

▲ 79

Proposal :

Name of Licensed Electrical Worker :

BP No (if any) :

Yes Not Applicable

1) Drawings are in A1 or A2 series. ■

2) Plan, front, rear and side elevations are included. ■

3) Cross-sections in relation to roads and immediate surroundings are included. ■

4) Detailed layout scales of 1:50 for all plans and 1:100 for all sections and elevations. ■

5) Substation requirements stated in Handbook on How to Apply for Electricity Connection ■

including latest updating are complied with.

6) Plans are signed by the Licensed Electrical Worker. ■

7) Proper vehicular access to the substation from main road is coloured. ■

8) I have advised the structural PE that substation structure is to be designed to ■

withstand the loading specified in the Handbook and all structural requirements

have been reflected in this submission.

9) All trenches/floor openings are not affected by any beam. ■

10) Required clear height (from underside of any beam) of all equipment rooms ■

and cable chamber are complied with.

11) No column within substation ■

12) No wet area above substation ■

13) Location of Customer’s Switchroom shown with proposed service cable route shown ■

14) I undertake to advise the architect and structural PE to ensure that all the requirements, ■

as endorsed, are incorporated into the architectural and structural plans prior to

substation construction

15) Previous drawings with PowerGrid’s comments are attached (for resubmission case) ■ ■

16) All additions/deletions/amendments are coloured ■ ■

17) Any encumbrances? ■ ■

Signature & Stamp of Licensed Electrical Worker Licence No Date

Note : Please tick in appropriate box for all items.

This checklist is to be submitted for every submission/re-submission.

■ Appendix 15

PowerGrid Ltd

CHECKLIST FOR SUBSTATION BUILDING PLAN SUBMISSION

▲ 80

Item Requirement

Cable Entry Ducts • Heavy duty 150mm dia. UPVC pipes in concrete jacket to be provided and terminated

300mm after the roadside drain.

• To be sealed with removable water-tight plugs at both ends of pipes.

• To have piling, if necessary.

Cable Entry Ramp • Cross Sectional views to be shown.

• 150mm wide removable hot-dipped galvanised mild steel gratings to be provided.

• Walls and floors to be plastered and rendered waterproof.

Cable Trenches • Sand filling to be carried out after cable installation.

• Depth of 900mm (no beams shall be allowed within/across the trenches).

• Openings to be covered by removable hot-dipped galvanised mild steel.

Switchgear Floor • Grating of 300mm width which is able to support at least 100 kg.

• To take a load of 1,600 kg per sq m. Floor beam is to be 200mm away from the HV floor

opening. All floor openings to be free of beam.

Switchroom • Louvred heavy duty aluminium door to Appendix 13.

Size: 2.9M X 1.8M wide nett for 22KV switchroom 2.7M X 1.8M wide nett for 6.6KV switchroom.

• Floor to have a 50mm thick cement rendering including a 20mm granolithic smooth finish of

cement, granite chips and sand in the ratio of 1:1:1 plus 9kg ironite or equivalent approved

hardener to each 45 kg of cement. For 22kV substations, final rendering of PowerGrid

switchroom floor to be done after installation of switchgear floor frame.

• Height: No part from floor to ceiling beams to be less than 3.1M. No column allowed within the

switchroom.

• Hot-dipped galvanised mild steel/stainless steel railing to be provided for stairs and loading

platform. (Removable type in front of door.)

• Hasp and staple (140m x 65m x 6mm) and door hinges to be of brass or stainless steel.

• Adequate natural lighting required. Provision of glass block in small modules.

• Ventilation panels to be installed at high level

Transformer Room • Noise level of 60 dB emitted from each transformer to be considered in the choice of location of

transformer yard.

• Adequate natural cross air ventilation required. Provision of PC vent block or Aluminium

ventilation panels.

• Each transformer plinth to be able to take a dead load of 6 tonnes.

• Door: 2.7M x 2.7M nett for each transformer. Heavy duty aluminium louvered doors to

Appendix 13.

• LV trench of 800mm min. width for every 2 transformers. Separate LV trench to be provided for

additional transformers.

• Hasp and staple (140mm x 65mm x 6mm) and door hinges to be of brass or stainless steel.

Wall/Column Finishes • All concrete surfaces shall be properly prepared and 20mm cement plastering work carried out

such that there should be no cracks, blisters and other defects.

• The emulsion painting system used for external walls shall be suitable for outdoor application.

There shall be a five (5) years warranty of the textured coating on all walls against all defects

arising from colour–fastness, faulty workmanship and/or materials, etc.

■ Appendix 16

PowerGrid Ltd

SUBSTATION LAYOUT REQUIREMENTS TO BEINCORPORATED IN THE ARCHITECTURAL PLANS

▲ 81

■ Appendix 16

Electrical Installation • Schematic layout to be shown.

• All wiring to be in surface conduits.

• Circuits to be controlled by miniature circuit breakers and ELCB.

• Isolators for battery chargers to tap supply by-passing ELCB.

• Substation to be adequately lit. Light fittings are to be installed at 3M (suspension in type)

and 2.4M (wall-mounting type) from floor level.

• Wire-mesh casing to be provided for light fittings installed in cable chamber.

• To label circuits at DB (distribution board) corresponding to the respective switches, sockets

and isolators, etc.

Cable Chamber • Trap door floor openings 760mm x 760mm leading to cable chamber to have:

‘Basement’ (where (a) hinged aluminium chequered covers complete with wall catch.

required) (b) cat ladders with 6 non-skip steps. Details as shown on drawings.

• Adequate natural ventilation required e.g. PC vent block/Aluminium vent panels.

– Height : 2.0m with no part less than 1.5m.

– To paint the front and back of all beam with 50mmH red luminous paint.

– Chamber floor to be ‘suspended’ type capable of supporting 400 kg/m2 (min).

• Floor level : 150mm above the immediate external final road or driveway level and above

highest flood level recorded. Wall and floor to be waterproofed and adequate drainage to be

provided, where necessary.

• Doors to be fitted with panic hardware and paint in red “Push lever down to open” on internal

side of door.

Metering Kiosks • To be provided for PowerGrid (see Appendices 31 to 33) when customer is taking HV supply.

Woodwork, Metal Work, etc • To be suitably painted and anti-termite treated for all woodwork.

Ceiling • To be of smooth finishes and emulsion painted. All beam to be encased in RC concrete.

Roof • To be of flat RC suitably waterproofed and laid to falls of 1:80 minimum.

• Roof eaves with multiple 150mm wide long slot openings to be incorporated for rain water to

free-fall direct into apron drain.

Drainage • Proper drainage around the substation to be provided with hinged hot-dipped galvanised m.s.

gratings.

Gate/Perimeter • To be 1.8m high and designed to blend aesthetically with the overall development.

Fencing (where required) • Hollow section anodised aluminium gates to Appendix 14.

• A 600mm wide concrete apron to surround the fence externally.

Access Road • To withstand heavy vehicles with laden load of 10 tonnes for all 22kV and 6.6KV substations.

• Width of driveway to be 4000mm (min) and surface to be properly paved.

• No car parking lots are to be drawn in such a way as to obstruct vehicular access to

substation.

NOTES : (a) Appointed project LEW is to liaise closely with Architect and Structural Engineer to obtain all their respective

requirements for incorporation into final layout plans submitted for PowerGrid’s endorsement.

(b) All dimensions and figures are to be checked by the Architect/structural engineer/appointed project LEW prior to

substation construction.

(c) If the Management Committee (MCST) were to subsequently replace the security personnel with other means e.g.

electronic security systems, etc; PowerGrid Ltd shall be consulted on the free access arrangement to the

substation.

(d) LEW/M&E consultants are to ensure that the proposed substation is constructed to PowerGrid approved plans.

Item Requirement

▲ 82

1. Where an application for supply of electricity necessitates the provision of a substation, the site shall be provided and

substation constructed by the applicant consumer at his own cost. The “Guidelines/Requirements for EHV Substation

Buildings” will be made available in PowerGrid’s service connection proposal to the applicant.

2. The applicant shall grant PowerGrid, its officers and agents an irrevocable licence at all times to have full and unrestricted

use of the substation and have free access thereto.

3. PowerGrid may utilize the substation and site in such manner as it deems fit. Subject to the applicant’s requirement

being fully provided for, PowerGrid shall be at liberty to use the substation for the purpose of supplying other customers

or for the improvement of the transmission network (e.g. upgrading, modification to substation structure, alteration and

addition works, etc.)

4. The substation site within the substation perimeter fence shall be intended solely for the substation development.

5. The substation structure may be an independent building or form part of a larger building. It shall be located at the 1st

storey level and must be readily accessible from the public road. Proper vehicular access to the substation shall be

provided for transportation of substation equipment by normal means, i.e. truck and trailer. The gradient of the access

road to the EHV substation site (66kV and above) shall not be more than 1:20.

6. There shall be no danger from flooding and fire hazards.

7. The substation site shall be free from all encumbrances (existing and future proposed services).

8. Suitable and proper cable access shall be provided on at least two sides of the substation site for all cables entering

and leaving the proposed site. If there is any roadside drain fronting/surrounding the substation site, the applicant

shall be required to install cable ducts under-crossing the drain. If the depth of the drain is more than 2.0 meters from

the proposed substation ground level, the cable ducts shall be installed to over-cross the drains with approval from the

relevant authorities.

10. The applicant consumer shall consider the effect of noise disturbance to neighboring development in its selection of

the substation site.

11. The site of the substation shall be approved by PowerGrid and the relevant authorities. The applicant shall ensure that

all necessary approval for the substation site be obtained from the relevant authorities.

12. The applicant shall consult PowerGrid on the substation site before commencement of detail design for the substation

building.

The applicant shall submit the necessary architectural and M&E design drawings, incorporating the necessary

requirements in the above-mentioned guidelines/requirements, for PowerGrid’s review and clearances. The applicant

shall also obtain the necessary clearances from the relevant authorities.

GENERAL REQUIREMENTS FOR EHV SUBSTATION(66KV AND 230KV ONLY)

■ Appendix 17

▲ 83

CUSTOMER’S 22kV AND 6.6kV MAIN INCOMING SWITCHBOARD

O/C – Overcurrent relay type IDMTL with 3/10 characteristics.

Plug Setting =100%, Time Multiplier=0.1.

E/F – Earth fault relay type IDMTL with 3/10 characteristics.

Plug Setting =20%, Time Multiplier=0.1.

PW – Pilot wire protection relay Solkor ‘R’/ ‘RF’, HOR 4, (For 22kV connection)

A – Ammeter

CB – Circuit breaker

To circuit breaker trip circuit

Notes :

1. Pilot wire protection CT shall comply with the following requirements:

a) Rated knee point voltage at maximum secondary turns not less than 80V.

b) Exciting current at the rated knee point voltage not more than 150mA.

c) Resistance of the secondary winding, corrected to 75oC not more than 0.15 ohm.

2. No other auxiliary device shall be connected to the pilot wire protection CTs. Pilot wire protection CT star – point shall

be towards protected line.

3. Where there is more than one incoming service, a bus-section breaker shall be provided and be electrically and

mechanically interlocked against parallel operation of the incoming services.

4. All 22kV circuits in the customer installation shall be equipped with unit-protection for fast fault clearance, inclusive of

fault at cable terminations.

■ Appendix 18

PROTECTION REQUIREMENTS FOR CUSTOMER’S22KV and 6.6 KV MAIN INCOMING SWITCHGEAR

REVENUE METERS

PILOT WIRE TO PG’SSWITCHGEAR

METERING CTs/PTs TOPG’S REQUIREMENTS

500/5CLASS 5P20 15VAOR BETTER

PW

INCOMINGSUPPLY

CB

R Y B

500/5CLASS X

M

oc

oc

oc

E/FA

▲ 84

■ Appendix 18

X

R Y B N

CLASS 5P10 15VAOR BETTER

INCOMING SUPPLY

KWH REVENUE METER

E/F

o

o

o

c

c

c

METERING CTs

C

PROTECTION REQUIREMENTS FOR CUSTOMER’SLV MAIN INCOMING SWITCHGEAR

CUSTOMER’S LV INCOMING SWITCHBOARD

O/C – Overcurrent relay type IDMTL with 3/10 characteristics or DTL relay. For DTL relay, the setting shall be 100% of

approved load with a time lag of not more than 0.5 sec. For IDMTL relay, the plug setting shall be 100% of approved

load with a time multiplier of 0.1(or 0.2 for approved load more than 1.5kA and up to 2.2kA and with source from

PG’s 22kV substation).

E/F – Earth fault relay operating at primary fault current of 20% of approved load subject to a maximum of 120 Amp with

time lag of not more than 0.5 second.

Note: LEW is reminded that under CP5, the overall ohmic resistance of earthing system should not exceed one

ohm. The maximum earth fault current setting shall be equal to 50V divided by the earth resistance value.

CT – Current transformer Class 5P10, 15VA or better.

CB – Circuit breaker with adequate breaking capacity and circuit breaker using shunt trip shall be provided with series

trip (Direct acting trip) device that operates with no time delay under short-circuit condition, or with HRC fuses in

series.

– To circuit breaker trip circuit.

Note :

Where there is more than one incoming service, a 4-pole bus-section breaker shall be provided and be mechanically interlocked

against parallel operation of the incoming services.

▲ 85

■ Appendix 18

PowerGrid66kV S/S

87L

87L

PowerGrid’sScope

Customer’sScope

Customer66kV S/S

Feeder Main 1(plus Main 2 ifSource S/S)

Pilot/OFCMarshallingBox

Interfacepoints

TYPE 1: CUSTOMER 66KV FEEDER CONNECTION(WITHOUT EMBEDDED GENERATION PLANT)

Type 1a: Supply from PowerGrid 66kV Source Substation

Numerical Relay System (OFC) (see note iii)

Feeder Main 1 LFCB102

Feeder Main 2 7SD511/REL316*4

Inter-tripping LFCB102

Remote End Interlock (on ES & DS) Mechanical

Electromechanical Relay System(Metallic pilot wire) (see note iii)

Feeder Main 1 Solkor - Rf

Feeder Main 2 Translay S

Inter-tripping Solkor-Rf


Type 1b: Supply from PowerGrid 66kVNon-Source Substation

Numerical Relay System (OFC pilot wire) (see note iii)






Inter-tripping Solkor-Rf


Notes :

i) All electromechanical feeder protection relays are to be

equipped with supervision and guard relays.

ii) Engineering and Protection details shall be discussed on

application.

iii) For reason of obsolescence or availability, the type of relays

and protection schemes shall subject to review and

confirmation during the consultation period.

iv) Customer to supply and install pilot marshalling board of

approved design to accommodate the optic fibre cables and

other auxiliary cables.

v) Intertrip scheme where applicable shall be implemented via

the main protection system.

▲ 86

TYPE 2: CUSTOMER 66KV FEEDER CONNECTION(WITH EMBEDDED GENERATION PLANT)

Type 2a: Supply from PowerGrid 66kVSource Substation




Inter-tripping NSD70D

Remote End Interlock Mechanical &(on ES, DS & CB) Electrical (NSD70D)

Switching sequencing NSD70D




Inter-tripping NSD70C

Remote End Interlock Mechanical &(on ES, DS & CB): Electrical (NSD70C)

Switching sequencing: NSD70C






Switching sequencing: NSD70D




Remote End Interlock Mechanical &(on ES, DS & CB) Electrical (NSD70C)

Switching sequencing: NSD70C

Notes :




application.

iii) For reason of obsolescence or availability, the type of relays

and protection schemes shall subject to review and



approved design to accommodate the optic fibre cables and

other auxiliary cables.

■ Appendix 18

87L

87L

NSD70

PowerGrid66kV S/S

Customer66kV S/S

PowerGrid’sScope

Customer’sScope


For inter-trippingand remoteelectrical interlock


Interfacepoints

NSD70

▲ 87

Type 3a: Supply from PowerGrid 66kVSource Substation





Remote End Interlock Mechanical(on ES & DS & T/F neutral)Electromechanical Relay System(Metallic pilot wire) (see note iii)




Remote End Interlock Mechanical(on ES & DS & T/F neutral)





Remote End Interlock Mechanical

(on ES & DS & T/F neutral)




Remote End Interlock Mechanical

(on ES & DS & T/F neutral)

Notes :




application.

iii) For reason of obsolescence or availability, the type of

relays and protection schemes shall subject to review and



approved design to accommodate the optic fibre cables

and other auxiliary cables.

v) Intertrip scheme shall be implemented via the main

protection system or the signalling equipment.

TYPE 3: CUSTOMER 66KV FEEDERTRANSFORMER CONNECTION

■ Appendix 18

87L

87L

87T

PowerGrid66kV S/S

PowerGrid’sScope

Customer’sScope

Customer22kV S/S

Include REF,TF Diff, OC/EF& other localprotection system



Interfacepoints

▲ 88

Supply from PowerGrid 230kV Substation

Numerical Relay System (OFC) (see note ii)

Feeder Main 1 Current Differential

Feeder Main 2 Current Differentialwith Distance Protection

Teleprotection NSD70D



Switching sequencing NSD70D

Notes :

i) Engineering and Protection details shall be discussed on

application.

ii) For reason of obsolescence or availability, the type of



iii) Customer to supply and install pilot marshalling board of



TYPE 4: CUSTOMER 230KVFEEDER CONNECTION

■ Appendix 18

87L

87L

NSD70

NSD70

Interfacepoints


For teleprotectioninter-tripping andremote electricalinterlock

PowerGrid230kV S/S

PowerGrid’sScope

Customer’sScope

Customer230kV S/S

Main 1 andMain Two

▲ 89

Supply from PowerGrid 230kV Substation

Numerical Relay System (OFC) (see note ii)

Feeder Main 1 Current Differential

Feeder Main 2 Current Differential withDistance Protection

Teleprotection NSD70D



Switching sequencing: NSD70D

Notes :

i) Engineering and Protection details shall be discussed on

application.

i) For reason of obsolescence or availability, the type of



iii) Customer to supply and install pilot marshalling board of



TYPE 5: CUSTOMER 230KVFEEDER TRANSFORMER CONNECTION

■ Appendix 18

PowerGrid230kV S/S

87L

87L

87T

NSD70

NSD70

Main 1Main 2

For teleprotectioninter-tripping andremote electricalinterlock

Pilot/OFCMarshalling Box

Interfacepoints

Customer66kV S/S

Customer’sScope

PowerGrid’sScope

Include T/F Diff,REF, OC/EF& other localprotection system

■ Appendix 19

► 90

APPLICATION FOR DE-ENERGISATION / RE-ENERGISATION (ADRE)

Licensed Installation No

Service No Voltage

Name of Installation:

Address of Installation:

Requested De-energisation Requested Re-energisation

Date Time *am/pm Date Time *am/pm

Contestable Customer :

*Yes / No

#Name of Customer : #MSS A/C No : #Name of Retailer:

To: *Sr Manager (EHV Network)

*Sr Manager (Regional Network – *West / Central / East / North / South) *Sr Manager (Customer Project- *East / West) *Sr Manager (Distribution Projects) (1) I, the undersigned LEW for the above installation, wish to apply for a *de

at the time stated above. My work, after the de-energisation, will involve t

*1 Routine Servicing

2

(2) * I / or (Name / Licence N

Regulation Division of EMA) will attend to the *de-energisation / re-ener

(3) I understand that: - (a) No work is to be carried out on the service cable until both Power

signed the SDRE (“Statement for De-energisation and Re-energisisolated the service cable at both ends.

(b) I am required to be on time on the approved date of de-energisatwhich the PowerGrid officer may cancel any appointment made.

Signature : Telephone/HP No.: Name : Date : Licence No : *Grade: E T E Notes : (a) All requested date and time are subject to PowerGrid’s approval.

(b) For non-contestable customers, this form should reach PowerGrid 7 business(c) For contestable customers, this form should reach PowerGrid 14 business da(d) For urgent work on Sundays / Public Holidays and after office hours, LEW

PowerGrid personally. (e) * Delete whichever is not applicable. (f) # To be filled in for contestable customer.

Section Fax No Tel NoEHVN 62909124 62909121RNW 66609390 66609301RNC 62799590 62799501RNE 62409203 62409218RNN 67653745 63146172RNS 62909110 62909101CPE 62409225 62409257CPW 62799532 62799559DP 62909140 62909139

-energisation/re-energisation he following:

(Please Specify)

o of appointee approved by gisation PERSONALLY.

Grid officer and myself have ation”) after we have safely

ion or re-energisation, failing

ngineer echnician lectrician

days before the requested date. ys before the requested date. is required to co-ordinate with

■ Appendix 20

POWERGRID LTD A No. 00001

STATEMENT FOR DE-ENERGISATION AND RE-ENERGISATION (SDRE) Part I & II concern the de-energisation and re-energisation of the service cable specified below. Each statement is valid only when it is signed by both the LEW of the installation and the POWERGRID officer-in-charge of the de-energisation or re-energisation. Name Of Installation: _________________________________________________________________________ Service Cable No. : *1 / 2 / 3 / 4 Isolated From (Substation Name, OG Box, Etc): ____________________________________________________ This de-energisation is *due to tripping / requested by PowerGrid / requested by LEW. * - please delete whichever is not applicable PART I : DE-ENERGISATION STATEMENT (TO BE SIGNED AFTER DE-ENERGISATION) (This statement is required only when work is to be done on the service cable by either the LEW or the PowerGrid officer, or both) Date: Time: DECLARATION BY LEW: I, the undersigned LEW, hereby declare that the above service cable has been turned-off and safely isolated from the customer's intake switchboard. Signature: Name: Licence No. DECLARATION BY POWERGRID OFFICER: I, the undersigned POWERGRID officer, hereby declare that the above service cable has been de-energised and safely isolated from the PowerGrid’s network. Signature: Name: Section: PART II : RE-ENERGISATION STATEMENT (TO BE SIGNED BEFORE RE-ENERGISATION) Date: _____________________ Time: DECLARATION BY LEW: I, the undersigned LEW, hereby declare that the customer's switchgear, to which the above mentioned service cable is connected, is cleared of all earthing leads, labour and tools, and that the switchgear is fit for re-energisation from the POWERGRID’s end with effect from the time specified above. I undertake to ensure that no work by any person will be carried out on the service cable at the customer's end until a new de-energisation statement is signed by both parties. Signature: Name: Licence No. ACKNOWLEDGEMENT BY POWERGRID OFFICER: Signature: Name: Section: PART III : DECLARATION BY LEW ON THE TIME OF TURN-OFF AND TURN-ON OF INCOMING SUPPLY AT CUSTOMER’S INTAKE SWITCHBOARD (for Contestable Customer only) TO : SP SERVICES LTD (Fax no: 68206800, tel no: 68238288) Name of Customer : _________________________________________ MSS A/C No : ______________ Address of Installation : _______________________________________________________________________ DECLARATION BY LEW: I, the undersigned LEW, hereby declare that I had turned-off and turned-on the incoming supply at the customer’s intake switchboard at the following date / time: Date of Turn-Off : __________________ Time of Turn-Off : __________________ Date of Turn-On : __________________ Time of Turn-On : __________________ Signature: Name: Licence No.

► 91

■ Appendix 21 CERTIFICATE OF READINESS

FOR THE ENERGISATION OF SERVICE CONNECTION

Name of Customer Installation:

Address:

Customer Installation Licence No/Expiry Date:

Connection Voltage:

Approved Load:

Name of Connection Cable(s): Owned by Connection Applicant (Yes / No)

MSS Account No:

Name of Retailer:

Certification By LEW I, ______________________(name) the undersigned LEW, hereby certify that the service connection*, the equipment and works at the above installation (Licence No: ______________) are now ready and fit for energisation with effect from the date and time specified below. Date:

Time: I certify that:

a. protection details are as follows**:

CT Ratio: /1A or 5A* Short-Time Withstand Current Ratings of Main Supply Incoming Switchgear_______KA for 3 sec Main 1 Type: Main 2 Type*: Direct Acting Tripping Setting: ______________ O/C Type: Setting: E/F Type: Setting:

b. the switching equipment/transformer/service connection* and all associated apparatus

related to the service connection have been tested and checked by me and they have passed the pre-commissioning checks and tests in compliance with the Market Rules, Transmission Code, Handbook on How to Apply for Electricity Connection, Connection Agreement, all other applicable standards, and the associated protection systems have all been proven effective.

c. The main protection schemes for the service connection have been commissioned by

load simulation method on date: ______________**

d. *for multi-metered installation with the exception of HDB residential installation, the metering scheme has been designed as master/sub-metering scheme.

* Delete where not applicable ** To indicate NA where protection scheme is not applicable

► 92

■ Appendix 21

e all necessary meters have been installed.

f. the safety coordination requirements of the Transmission Code have been fully complied

with.

g. all workmen have been withdrawn and warned that it is no longer safe to continue to work on the equipment without a ‘Permit-to-work (PTW)’, and that all tools, scaffolding, ladders, construction materials including any temporary local earthing connections have been removed from the equipment, and all protective screens or guards, if any, have been securely fixed and the appropriate warning signs displayed and that all keys, if any, necessary for the isolation and operation of the equipment have been handed to me.

h. all circuit earth on equipment to be energised are removed.

i. equipment to be energised in this request (the diagram must clearly indicate the portion

of the equipment to be energised. If space is insufficient, please provide diagram as attachment) is shown below:

Name & Signature of LEW responsible for the design of the customer installation/ operation of the electrical installation#

Licence No. Date

# applicable for re-energisation of service connection only

► 93

■ Appendix 22.1 FORM CS/6

REQUEST FOR INSTALLATION OF ELECTRICITY KWH METER FOR NEW SUPPLY UNDER DIRECT SUPPLY FROM POWERGRID (CONTESTABLE CUSTOMER)

For offici al use

CMS Installation no. ________________

PART I Customer Details – To be completed by LEW Name of Customer(Mr/Mdm) /Company(Messrs): _________________________________________________

NRIC/Company ROC:_______________________________________________________________________ Application no.: _______________________________ Type Of Business: _____________________ Site Address as given by IRAS :________________________________________________________________

(You are required to enclose a copy of the IRAS letter.) Telephone point(s)/No(s). : _____________________________________________________________________ (For contestable customer, you are required to install telephone point(s) adjacent to the meter panel before applying for the installation of the meters)

Supply Capacity :____________________kVA at ___________ Volts Telephone No. : ____________________ Pager/Handphone No. : ____________________________________

Name of LEW : ____________________________ LEW License no. : ________________ Telephone no. : _____________ Handphone no. : ______________ Facsimile no. : ___________________ Signature : __________________________________ Date : _________________________

*Note: LEW shall be informed of MSSL account no. after meters have been installed. LEW shall apply for license to operate electrical installation before proceeding to Installation Section to book for turn on appointment date.

_____________________________________________________________________________________________

PART II (For official use) To: Meter Reading Branch, SP Services Ltd Facsimile no.: __________

Meter Serial No. Opening Meter Reading Installation Date Date : ______________ Data Entered by: ________________________ Signature : _________________

(Full Name)

____________________________________________________________________________________________ PART III (For official use)

To: Customer Services Section(MSSL), SP Services Ltd Facsimile no.: 6820 6800 Create MSSL Account no. : ______________________ LEW has been notified of MSSL account no. Date : ______________ Account Opened by: ________________________ Signature : _______________ (Full Name) ► 94

■ Appexdix 22.2 Form CS/7 REQUEST FOR INSTALLATION OF ELECTRICITY KWH METER (FOR LOAD EXCEEDING 45KVA) UNDER MULTI-METERED BUILDING SCHEME

For official use Serial No.: ____________________

Electricity Installation Number ___________________

PART I Customer Details – To be completed by LEW

Name of Customer(Mr/Mdm) /Company(Messrs): _________________________________________________

NRIC/Company ROC:________________ Name of Contact Person for Company: _______________________

Telephone No. : ____________________ Pager/Handphone No. : ___________________________________

Site Address for Installation of Meter: ___________________________________________________________

Telephone point(s)/No(s). : ___________________________________________________________________ (For contestable customer, you are required to install telephone point(s) adjacent to the meter panel before applying for the installation of the meter panel) A/c no.: : _________________________ Master A/c no.: __________________________

(For non-contestable customer only) (For non-contestable customer only)

Supply Capacity :___________kW at ___________ Volts Type of Business: ______________________ (Form CS/3 or CS3/H and COC shall be submitted together with this form)

Details of Landlord/MCST

Name of Landlord/MCST: _______________________________ Landlord’s Account no. : ___________________

Forwarding Address : _______________________________________________________Postal Code ________

Name of LEW in charge of landlord’s electrical installation : ____________________________________________

Contact no of Landlord’s LEW : __________________________________________________________________

_____________________________________________________________________________________________

Name of LEW : ___________________ LEW Licence no. : _________________

Forwarding Address (as registered with EMA) : ____________________________________Postal Code_________

Telephone no. : _____________ Handphone no. : ______________ Facsimile no. : ___________________

Signature : __________________________________ Date : _________________________ ____________________________________________________________________________________________

PART II (For official use) To: Meter Section, PowerGrid Ltd Facsimile no.: 62777 008

Meter Serial No. Opening Meter Reading Installation Date Date : ______________ Data Entered by: ________________________ Signature : _____________________ (Full Name)

► 95

■ Appendix 22.2 PART III (For official use)

To: Supply Application, SP Services Ltd

For Non-Contestable Customer : -

Check and perform Master-sub Tagging

Sent to CRO for account move in on ____________

Move in/ Turn-On Date is on ______________ ► 96

▲ 97

■ Appendix 23

APPLICATION FOR APPOINTMENT FOR ENERGISATIONOF SERVICE CONNECTION BY FAX

Facsimile Transmittal Sheet

To : Manager, Installation Branch From : (Name of LEW)

Company : SP Services Ltd Company :

Fax No : 62777044 Fax No :

Date : Office Tel :

Application No : Pager / Handphone No :

*SPSL/MSSL a/c ref : Approved Load :

Total no of pages (including this page) :

I, (LEW’s name) (EMA Licence No.) would like to make an appointment for

energisation of service connection to

(site address)

The applicant is a *contestable/non-contestable customer.

The following documents are faxed together with this application.

Documents Tick if applicable

1) Opening of Account with SPSL

2) Opening of Account with Electricity Retailer/MSSL (for contestable customer)

3) Confirmation of meters already fixed (for contestable customer)

4) Electrical Installation License issued by EMA

5) Certificate of Compliance (original to be submitted to PowerGrid’s project officer)

I will submit the Certificate of Readiness on site, failing which service connection shall not be energised and PowerGrid Ltd

shall not be liable for any losses arising therefrom.

I understand that the date of appointment is subject to confirmation by SP Services Ltd and the appointment date shall not

be earlier than 4 business days from this fax date. The preferred appointment dates are as follows:

1st choice : Date Time: Morning/Afternoon * (* delete whichever not applicable)

2nd choice : Date Time: Morning/Afternoon *

3rd choice : Date Time: Morning/Afternoon *

Name & Signature of LEW

FOR OFFICIAL USE

The appointment for energisation of service connection is fixed on at .(date) (time)

Please liaise with Meter Section of PowerGrid Ltd for the fixing of revenue meter before the energisation.

For clarification, please contact at Tel : 627770 .

▲ 98

■ Appendix 24

1 The service cable termination and meter compartment shall be located at the front-gate pillar/perimeter wall

such that it is accessible to SPSL’s and PowerGrid’s personnel without the need to enter the customer’s premises.

2 It shall be constructed of concrete, brick or high impact fibre glass and shall be completely weatherproof.

Provision shall be made to prevent any stagnation of water within the compartment.

3 The main dimensions of the compartment are shown in the layout drawing (see Appendix 25). The depth of the

compartment shall be between 250 mm and 300 mm.

4 A meter board of 20 mm thick and constructed of teak wood or any hardwood chemically treated against

termite attack shall be provided. Plywood board is not acceptable. A minimum space of 450 mm (W) x 800 mm

(H) shall be allowed for the termination of the service cable and the installation of service MCBs and meters.

Customer’s MCBs or connectors shall be mounted on a separate board in a separate compartment.

5 A hinged door with a clear glass viewing window shall be provided. The viewing window with a 200 mm (W) x

300 mm (H) x 6 mm (thickness) glass cover shall be positioned to be directly in front of the meter location. To

avoid high humidity and condensation within the compartment, sufficient ventilation shall be provided. The

access door shall not have less than 450 mm clear access opening.

6 The door shall be constructed of stainless steel, anodised aluminium or high impact type fibre glass reinforced

material. Where a metal door is provided, a means of earthing shall be provided.

7 One 100mm diameter UPVC lead-in pipe shall be provided for PowerGrid service cable. The pipe shall be laid

up to 100 mm from the floor slab of the electric meter compartment and shall undercross any drain in front of the

compartment.

8 There shall be adequate standing space in front of the compartment to facilitate meter reading, installation and

maintenance work. Where there exists a drain in front of the compartment, a suitable concrete platform or

hinged galvanised steel grating shall be provided.

9 The compartment shall be exclusively used for service cable and electricity meter. No water meter, gas meter or

other facilities shall be placed within the same compartment.

10 Please obtain clearance from URA’s Development Control Division if the meter-box structure exceeds their

stipulated dimensions.

TECHNICAL REQUIREMENTS FOR SERVICE CABLE ANDMETER COMPARTMENT FOR LANDED HOUSES

▲ 99

■ Appendix 24

STANDARD METER COMPARTMENTS AT GATE PILLAR

▲ 100

■ Appendix 25

STANDARD METER BOARD

▲ 101

■ Appendix 26

STANDARD SIZE FOR SINGLE-PHASE METER BOARD

1. Minimum space for single-phase meter position (enclosed within broken lines) :

(i) 230mm (W) x 280mm (H) for 25 sq mm cable and below.

(ii) 230mm (W) x 300mm (H) for 35 sq mm cable.

2. A customer’s earthing terminal shall be provided on the meter board for termination of the earthing lead and earth

continuity conductor.

3. Not more than one wire shall be connected to each terminal of the meter terminal block.

4. All wires on the meter board from MCB/Cut-Out to the meter and meter to main switch should preferably be run on the

surface.

5. The size of cables to be used for connection to meters should not exceed 35 sq mm.

6. The minimum length of wire “L” protruding from the meter board to the meter terminal shall be at least 200mm.

7. For meters grouped in a centralised meter room etc, an additional minimum spacing of 70mm is necessary between

each row of meters for ease of installation/change.

8. Some typical layouts are shown in figures A, B and C.

▲ 102

■ Appendix 27

STANDARD SIZE FOR THREE-PHASE METER BOARD

1. Minimum space for three-phase meter position 450mm (W) x 450mm (H) (enclosed within broken lines) :

2. A customer’s earthing shall be provided on the meter board for termination of the earthing lead and earth continuity

conductor.

3. Not more than one wire shall be connected to each terminal of the meter terminal block.

4. All wires from the meter board from MCB/Cut-Out to meter and meter to main switch should preferably be run on the

surface.

5. The size of cables to be used for connection to meters should not exceed 35 sq mm.

6. The minimum length of wire “L” protruding from the meter board to the meter terminal should be 200mm.

▲ 103

■ Appendix 28

CT METER PANEL FOR LOW VOLTAGE SUPPLY

▲ 104

■ Appendix 29

METHODS OF SEALING METER PANELS

▲ 105

■ Appendix 30

ENCLOSURE FOR LOW VOLTAGE METERING CURRENT TRANSFORMERS

▲ 106

■ Appendix 31

HV METERING KIOSK REQUIREMENTS(FOR 1 OR 2 FEEDERS)

HV Metering Kiosk Requirements (for 1 or 2 feeders)

The following are required :

a) Metering kiosk : 650mm by 1700mm by minimum height 2400mm of solid brick as shown.

b) Floor opening 50mm by 50mm as shown.

c) Staircase and 1000mm landing where required.

d) Steel or heavy duty aluminium door of 1200mm wide by 2100mm height to be fitted with one of the Grid approved master

series locksets as given in section 6.1.5.

e) One 13A switched socket outlet, one 40W lighting point and one fixed telephone line c/w telephone socket outlet.

f) Metal grill top cover if the back wall does not extend to the roof or ventilation louvers of size 600mm x 900mm if the back

wall extends to the roof.

g) If landing is above ground level, safety railings must be provided.

▲ 107

■ Appendix 32


Side Elevation of Metering Kiosk for 3 or 4 feeder panel

The following are required :

a) Metering kiosk : 810mm by 2650mm by minimum height 2400mm of solid brick as shown.

b) Floor opening 100mm by 60mm as shown.

c) Staircase and 1000mm landing where required.

d) Steel or heavy duty aluminium door of 800mm wide by 2100mm height to be fitted with one of the Grid approved master

series locksets as given in section 6.1.5.

e) One 13A switched socket outlet, two 40W lighting points and one fixed telephone line c/w telephone socket outlet.

f) Metal grill top cover if the back wall does not extend to the roof or two ventilation louvers of size 600mm x 900mm if the

back wall extends to the roof.

g) If landing is above ground level, safety railings must be provided.

▲ 108

■ Appendix 32


▲ 109

■ Appendix 33

HV METERING PANEL REQUIREMENTS(FOR 1 OR 2 FEEDERS)

▲ 110

■ Appendix 34

METERING VTSVoltage Ratio, Sequence And Phase Angle Tests Report

Customer : A/C No :

Project Address : APC No :

Voltage Ratio :

VTs No :

For Feeder No :

I, , EMA Licensed No. had carried out the above test and results are given below.

I hereby certify that the VTs are correctly connected up for tariff metering.

Stamp and Signature of LEW

Date :

Primary ( V) Secondary Phase Angle

Across Sequence Across Volt Lead LagFrequency

RY RY RE

YR

YB YE

BR BE

YB YB YE

BY

BR BE

RY RE

BR BR BE

RB

RY RE

YB YE

▲ 111

■ Appendix 35

1 Service Connection Charges for Low Voltage (LV) Connection

All LT consumers are required to pay a one-time upfront service connection charge. These charges which vary for

different load requirements are categorised depending on the provision of a substation.

For larger consumers with substations, their supply intake point is usually adjacent to the substation, which requires a

service cable of approximately 15m in most instances. Therefore, the standard connection charge is computed based

on a cost of service cable length of 15m. Consumers shall pay the additional cost for service cable exceeding 15m. In

addition, consumers shall also pay for those dedicated assets, such as switchgear and transformers, which are serving

them and do not benefit others.

For individual small consumers without substations, the cost of LT service cable for the same capacity may vary widely

depending on their locations with respect to the nearest LT mains. These consumers are not the sole beneficiaries of the

extension of the LT network. To achieve a greater degree of equity in terms of cost for these general consumers, a

standard cost approach is adopted based on similar requirements. The average global cost based on capacity is

determined from past statistics. As such, this category of consumers which comprises mainly the individual landed

residential owners, applying for the same applied load would pay the same standard connection charge regardless of

the location of their premises from the existing LT network.

Standard charges are only applicable to consumers who are connected to the shared network. The rates, which are

approved by EMA, are available in the Transmission Services Rate Schedule. Standard charges are not applicable to

consumers where the network created is unlikely to be shared by others. Some of these include supply to HDB premises,

temporary work sites, public installations and offshore island premises. These consumers would have to pay for the full

connection network cost, based on user-pay principle, as they are the main beneficiaries.

2 Service Connection Charges for HV and EHV Connection

Customers receiving HV and EHV connection shall pay the cost of the service connections to their intake equipment

including cables, associated equipment and facilities to effect the connection of customer’s equipment to PowerGrid’s

substation/network. The service connection shall cater for single contingency.

Customers requesting for additional level of contingency above single contingency are required to pay for the full cost of

such provision.

3 Dedicated Network/Substation

The customer shall pay the full cost for all associated equipment and facilities under a dedicated network/substation

scheme which the network capacity is intended to serve to its development exclusively.

BASIS FOR THE SERVICE CONNECTION CHARGE

▲ 112

■ Appendix 36

STANDARD SERVICE CONNECTION CABLES

The type of service connection cables for terminating into a customer’s intake point for the applied load connected at the LV

and 22kV level and the typical connection schemes are illustrated as follows:

Voltage Level Applied Load (kVA) Size of Cables Type of cables

LV Up to 15 35mm2 2Core Cu/XLPE/SWA/PVC

16 – 45 35mm2 4Core Cu/XLPE/SWA/PVC


76 – 140 120mm2 4Core Al/XLPE/SWA/PVC




281 – 460 2x300mm2 4Core Al/XLPE/SWA/PVC

461 – 560 2x300mm2 4Core Cu/XLPE/SWA/PVC

561 – 1000 7x500mm2 1Core Cu/XLPE/PVC

1001 – 1500* 7x1000mm2 1Core Cu/XLPE/PVC

1001 – 2000^ 2 sets of 7x500mm2 1Core Cu/XLPE/PVC

2001 – 3000^ 3 sets of 7x500mm2 1Core Cu/XLPE/PVC

22kV (HV) Up to 12750kW^ 2 sets of 300mm2 3Core Cu/XLPE/DSTA/PVC

12751 – 25500kW^ 2 sets of 2X300 mm2 3Core Cu/XLPE/DSTA/PVC

Pilot cables 1.5 mm2 5 pair Cu/PE/DSTA/PVC

For development whereby the service connection cables is to be supplied and installed by the customer, the LEW shall, in the

event of a non-standard cable installation, seek approval from PG prior to installation.

* applies to upgrading of applied load

^ There must be an electrical and mechanical interlocking bus coupler between each set of cables terminating into the

customer’s switchboard as shown below :

300mm2 3Core

2 x 300mm2 3Core 2 x 300mm2 3Core

Bus Coupler

2 x 300mm2 3Core

Bus Coupler

HV Customer’sSwitchboard25501 – 38250kWSubject toPowerGrid’sapproval

2 x 300mm2 3Core300mm2 3Core

Bus Coupler

HV Customer’sSwitchboard

Up to 12750kW

2 x 300mm2 3 Core

Bus Coupler

HV Customer’sSwitchboard

12751 – 25500kW


Bus Coupler

LV Customer’sSwitchboard1001 – 2000kVA

LV Customer’sSwitchboard2001 – 3000kVA


Bus Coupler

7 x 500mm2 1Core

Bus Coupler

▲ 113

■ Appendix 37

CERTIFICATE OF COMPLIANCE

Particulars of Electrical Installation

Name of Consumer :

Address of Installation :

Electrical Installation Licence No : MSS Account No :

Approved load & Supply Voltage : kW Volts

Generator(s) Installed : ■ Operated in parallel with PowerGrid’s network.

No. of generator : Rating : kVA

■ Standby generator

No. of generator : Rating : kVA

■ Not applicable

Certification by Licensed Electrical Worker

I certify that the above-mentioned Electrical Installation complies with the requirements of the Electricity (Electrical Installations)

Regulations 2002 and the relevant Singapore Standard Code of Practice. I further certify that the technical requirements as

stipulated by the person responsible for turning on the switchgear which controls the supply of electricity to the said electrical

installation have been complied with.

I hereby request for the energisation of the supply line to the said Electrical Installation on (date).

Name & Signature of LEW Licence No. Date

Copy to :

Market Support Services Licensee REF : E(EI)Reg5(2)

■ Appendix 38

STATEMENT OF TURN-ON OF ELECTRICITY ELECTRICITY SUPPLY TO ___________________________________________________ (Name of Applicant) AT________________________________________________________________________ (Address of Installation) ELECTRICAL INSTALLATION LICENCE NO* : ____________________________________ APPLICATION NUMBER: ______________________________________________________ I agree that the above-mentioned electrical installation is suitable for connection to the electrical system. I certify that the supply line to the installation has been energised on _____________________________at ______________________. (date) (time) ____________________________________ _____________ _________________ Name & Signature of PowerGrid’s officer NRIC No. Date

I acknowledge that the supply line has been energised on the date and time indicated above. ____________________________________ ________________ _________________ Name & Signature of LEW requesting for Licence No. Date energisation of supply line

I acknowledge that the supply line has been energised on the date and time indicated above and confirm that I will be responsible for the operation of this electrical installation hereafter. _______________________________________ _________________ _________________ Name & Signature of LEW responsible for the Licence No. Date operation of the electrical installation*

I acknowledge that the supply line has been energised on the date and time as indicated above.

__________________________________________ __________________ ___________________ Name & Signature of Applicant or his representative NRIC / Passport No. Date * Not Applicable for an electrical installation that is exempted from licensing

Original Copy – PowerGrid Ltd Pink Copy – LEW (Requesting) Yellow Copy – LEW (Operation) Green Copy – Applicant Blue Copy – MSSL White (last) Copy – File ► 114

REF: E(EI) REG R5(4)

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■ Appendix 39

The customer applying for an exempt generation facility is required to obtain PowerGrid’s approval and shall

comply with the technical, safety & operational and commercial & legal requirements as follows:

A) Technical Requirements

1 real and reactive power/voltage output and voltage and frequency response times must be within agreed limits

2 not contribute to the voltage unbalance, voltage fluctuation and harmonic content specified for the transmission network

3 ensure that there is no interference to PowerGrid’s Equipment or any other directly or indirectly connected consumers.

4 ensure adequate partitioning of the exempt generation facility equipment from PowerGrid’s equipment

5 ensure that there is no fault level contribution exceeding 1.5kA to the distribution network

6 where required by PowerGrid, install harmonic filtering circuit at the incoming switchboard of the service connection in

compliance with the harmomics standard

B) Safety & Operational Requirements

1 provide an interlocking and inter-tripping facility for the service connection that meets PowerGrid’s requirement

2 fit exempt generation facility with reverse power relays to prevent export of power to the transmission system

3 not operate the exempt generation facility in islanding mode i.e.the embedded generator must isolate itself from the

distribution network when there is a fault/tripping on the latter or the customer’s installation (non-islanding protection)

4 provide a synchronizing facility at the incoming switchboard of its service connection and ensure that any output is

always synchronised with the distribution network

C) Commercial & Legal Requirement

The customer with an exempt generation facility shall :

1 pay standby use of system charges or any other charges approved by the EMA

2 give an undertaking to the PowerGrid in its Connection Agreement indemnify the PowerGrid Ltd :

i) for all losses and liabilities arising from any loss of sychronisation caused by any tripping or re-closing of any

breakers in the transmission system and the exempt generation facility connected in parallel to the transmission

system ; and

ii) to indemnify PowerGrid against losses to third parties caused by impedance, disruption degradation interference

or failure of transmission services to third parties caused by the system or works carried out on the transmission

system.

3 certify to PowerGrid that the exempt generation facility meet all conditions of the relevant legislation, regulation (including

installation, fire and safety, noise and environment);

4 conduct regular site tests and to notify the PowerGrid of the results

5 allow PowerGrid to conduct inspection of, disconnect and enforce conditions in respect of the service connection if the

exempt generation facility fails to meet any of the above requirements.

6 undertake in its Connection Agreement with PowerGrid to resolve, at its own expense all third party complaints concerning

the exempt generation facility(e.g.complaints due to noise, or aesthetic reasons); and

7 use the service connection at its own risk to operate in parallel with its exempt generation facility.

REQUIREMENTS FOR EXEMPT GENERATION FACILITYNOT EXCEEDING 1MW

▲ 116

■ Appendix 40

IEC Standards

IEC 60044-1 (1996-12) Ed. 1.0 Instrument transformers – Part 1 : Current transformers

IEC 60044-1-am1 (2000-07) Ed. 1.0 Amendment 1

IEC 60044-2 (2000-11) Consol. Ed. 1.1 (incl. am1) Instrument transformers – Part 2 : Inductive voltage

transformers

IEC 60044-6 (1992-03) Ed. 1.0 Instrument transformers – Part 6 : Requirements for protective current

transformers for transient performance

IEC 60060-1 (1989-11) Ed. 2.0 High-voltage test techniques – Part 1 : General definations and test

requirements

IEC 60060-2 (1994-11) Ed. 2.0 High-voltage test techniques – Part 2 : Measuring systems

IEC 60060-2-am1 (1996-03) Ed. 2.0 Amendment No.1 to IEC 60-2

IEC 60076-1 (2000-04) Consol. Ed. 2.1 (incl. am1) Power transformers – Part 1 : General

IEC 60076-2 (1993-04) Ed. 2.0 Power transformers – Part 2 : Temperature rise

IEC 60076-3 (2000-03) Ed. 2.0 Power transformers – Part 3 : Insulation levels, dielectric tests and external

clearances in air

IEC 60076-5 (2000-07) Ed. 2.0 Power transformers – Part 5 : Ability to withstand short circuit

IEC 60076-8 (1997-11) Ed. 1.0 Power transformers – Part 8 : Application guide

IEC 60076-10 (2001-05) Ed. 1.0 Power transformers - Part 10 : Determination of sound levels

IEC 60099-4 (2001-12) Consol. Ed. 1.2 (incl. am1 + am2) Surge arresters – Part 4 : Metal-oxide surge

arresters without gaps for a.c. systems

IEC 60137 (1995-12) Ed. 4.0 Insulating bushings for alternating voltages above 1000V

IEC 60141-1 (1993-09) Ed. 3.0 Tests on oil-filled and gas-pressure cables and their accessories – Part 1 : Oil-

filled, paper or polypropylene paper laminate insulated, metal-sheathed cables and accessories

for alternating voltages up to and including 500kV

IEC 60141-1-am1 (1995-02) Ed. 3.0 Amendment No.1

IEC 60141-1-am2 (1998-08) Ed. 3.0 Amendment No.2

IEC 60228 (1978-01) Ed. 2.0 Conductors of insulated cables

IEC 60228-am1 (1993-01) Ed. 2.0 Amendment No.1

IEC 60230 (1966-01) Ed. 1.0 Impulse tests on cables and their accessories

IEC 60255-3 (1989-06) Ed. 2.0 Electrical relays – Part 3 : Single input energising quantity measuring relays

with dependent or independent time

IEC 60255-5 (2000-12) Ed. 2.0 Electrical relays – Part 5 : Insulation coordination for measuring relays and

protection equipment – Requirements and tests

IEC 60255-6 (1988-12) Ed. 2.0 Electrical relays – Part 6 : Measuring relays and protection equipment

IEC 60255-8 (1990-10) Ed. 2.0 Electrical relays – Part 8 : Thermal electrical relays

IEC 60255-12 (1980-01) Ed. 1.0 Electrical relays – Part 12 : Directional relays and power relays with two input

energising quantities

IEC 60255-13 (1980-01) Ed. 1.0 Electrical relays – Part 13 : Biased (percentage) differential relays

IEC 60255-14 (1981-01) Ed. 1.0 Electrical relays – Part 14 : Endurance tests for electrical relay contacts –

Preferred values for contact loads

IEC 60255-16 (1982-01) Ed. 1.0 Electrical relays – Part 16 : Impedance measuring relays

IEC 60255-19 (1983-01) Ed. 1.0 Electrical relays – Part 19: Sectional specification: Electromechanical all-or-

nothing relays of assessed quality

IEC 60255-23 (1994-10) Ed. 1.0 Electrical relays – Part 23 : Contact performance

IEC 60255-24 (2001-05) Ed. 1.0 Electrical relays – Part 24 : Common format for transient data exchange

(COMTRADE) for power systems

IEC 60273 (1990-03) Ed. 3.0 Characteristics of indoor and outdoor post insulators for systems with nominal

voltages greater than 1000V

LIST OF STANDARDS

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■ Appendix 40

IEC60186 Voltage Transformers

IEC 60287-1-1 (2001-11) Consol. Ed. 1.2 (incl. am1 + am2) Electric cables – Calculation of the current rating –

Part 1-1 : Current rating equations (100% load factor) and calculation of losses – General

IEC 60287-1-2 (1993-12) Ed. 1.0 Electric cables - Calculation of the current rating – Part 1 : Current rating

equations (100% load factor) and calculations of losses – Section 2: Sheath eddy current loss

factors for two circuits in flat formation

IEC 60287-2-1 (2001-11) Consol. Ed. 1.0 (incl. am1) Electric cables – Calculation of the current rating – Part 2-1 :

Thermal resistance – Calculation of the thermal resistance

IEC 60287-2-2 (1995-05) Ed. 1.0 Electric cables - Calculation of the current rating – Part 2: Thermal resistance –

Section 2: A method for calculating reduction factors for groups of cables in free air, protected

from solar radiation

IEC 60287-3-1 (1999-05) Consol. Ed. 1.1 (incl. am1) Electric cables – Calculation of the current rating – Part 3-1 :

Sections on operating conditions – Reference operating conditions and selection of cable type

IEC 60287-3-2 (1995-07) Ed. 1.0 Electric cables - Calculation of the current rating – Part 3 : Sections on

operating conditions – Section 2 : Economic optimization of power cable size

IEC 60287-3-2-am1 (1996-10) Ed. 1.0 Amendment No.1 to IEC 287-3-2

IEC 60289 (1988-05) Ed. 2.0 Reactors

IEC 60298 (1990-12) Ed. 3.0 A.C. metal-enclosed switchgear and controlgear for rated voltages above 1kV

and up to and including 52kV

IEC 60332-1 (1993-04) Ed. 3.0 Tests on electric cables under fire conditions – Part 1 : Test on a single vertical

insulated wire or cable

IEC 60354 (1991-10) Ed. 2.0 Loading guide for oil-immersed power transformers

IEC 60376 (1971-01) Ed. 1.0 Specification and acceptance of new sulphur hexafluoride

IEC 60502-1 (1998-11) Consol. Ed. 1.1 (incl. am1) Power cables with extruded insulation and their

accessories for rated voltages from 1kV(Um = 1,2kV) up to 30kV (Um = 36kV) - Part 1 : Cables

for rated voltages of 1kV (Um = 1,2kV) and 3kV (Um = 3,6kV)

IEC 60517 (1990-10) Ed. 3.0 Gas-insulated metal-enclosed switchgear for rated voltages of 72.5kV and above

IEC 60517-am1 (1994-11) Ed. 3.0 Amendment No.1

IEC 60521 (1988-03) Ed. 2.0 Class 0.5, 1 and 2 alternating-current watthour meters

IEC 60529 (2001-02) Consol. Ed. 2.1 (incl. am1) Degrees of protection provided by enclosures (IP Code)

IEC 60651 (2001-10) Consol. Ed. 1.2 (incl. am1 + am2) Sound level meters

IEC 60660 (1999-10) Ed. 2.0 Insulators – Tests on indoor post insulators of organic material for systems with

nominal voltages greater than 1000V up to but not including 300kV

IEC 60687 (1992-06) Ed. 2.0 Alternating current static watt-hour meters for active energy (classes 0,2 S and

0,5 S)

IEC 60694 (2001-05) Consol. Ed. 2.2 (incl. am1 and am2) Common specifications for high-voltage

switchgear and controlgear standards

IEC 60722 (1982-01) Ed. 1.0 Guide to the lightning impulse and switching impulse testing of power

transformers and reactors

IEC 60811-1-1 (2001-07) Consol. Ed. 2.1 (incl. am1) Common test methods for insulating and sheathing

materials of electric cables and optical cables - Part 1–1 : Methods for general application –

Measurement of thickness and overall dimensions - Tests for determining the mechanical

properties

IEC 60840 (1999-02) Ed. 2.0 Power cables with extruded insulation and their accessories for rated voltages

above 30kV (Um = 36kV) up to 150kV (Um = 170kV) - Test methods and requirements

IEC Standards continued

▲ 118

■ Appendix 40

IEC 60859 (1999-07) Ed. 2.0 Cable connections for gas-insulated metal-enclosed switchgear for rated

voltages of 72.5kV and above – Fluid-filled and extruded insulation cables - Fluid-filled and dry

type cable-terminations

IEC 60885-1 (1987-03) Ed. 1.0 Electrical test methods for electric cables. Part 1: Electrical tests for cables,

cords and wires for voltages up to and including 450-750V

IEC 60885-2 (1987-03) Ed. 1.0 Electrical test methods for electric cables. Part 2 : Partial discharge tests

IEC 60885-3 (1988-07) Ed. 1.0 Electrical test methods for electric cables. Part 3 : Tests methods for partial

discharge measurements on lengths of extruded power cables

IEC 60947-1 (2001-12) Consol. Ed. 3.2 (incl. am1 + am2) Low-voltage switchgear and controlgear – Part 1 :

General rules

IEC 60947-7-1 (1999-08) Consol. Ed. 1.1 (incl. am1) Low-voltage switchgear and controlgear – Part 7 : Anciliary

equipment – Section 1 : Terminal blocks for copper conductors

IEC 61000-4-2 (2001-04) Consol. Ed. 1.2 (incl. am1 + am2) Electromagnetic compatibility (EMC) – Part 4-2 :

Testing and measurement techniques – Electrostatic discharge immunity test

IEC 61036 (2000-09) Consol. Ed. 2.1 (incl. am1) Alternating current static watt-hour meters for active energy

(classes 1 and 2)

IEC 62098 (2000-11) Ed. 1.0 Evaluation methods for microprocessor based instruments

IEC 62271-100 (2001-05) Ed. 1.0 High-voltage switchgear and controlgear – Part 100 : High-voltage alternating-

current circuit-breakers

IEC 62271-102 (2001-12) Ed. 1.0 High-voltage switchgear and controlgear – Part 102 : High-voltage alternating-

current disconnectors and earthing switches

IEC 60068 (1988-06) Environmental testing. Part 1 : General and guidance

IEC 60068-1-am1 (1992-04) Amendment No. 1

IEC 60068-2-3 (1969-01) Environmental testing - Part 2 : Tests. Tests Ca: Damp heat, steady state.

IEC 60068-2-11 (1981-01) Environmental testing - Part 2 : Tests. Tests Ka: Salt Mist.

IEC 60068-2-11 (1999-12) Corrigendum 1.

IEC 60068-2-30 (1980-01) Environmental testing - Part 2 : Tests. Tests Db and guidance: Damp heat, cyclic (12 +

12-hour cycle)

IEC 60068-2-30-am1 (1985-08) Amendment No. 1

IEC 60068-2-67 (1995-12) Environmental testing – Part 2 : Tests – Test Cy: Damp heat, steady state, accelerated

test primarily intended for components.

IEC 60068-3-4 (2001-08) Environmental testing – Part 3-4 : Supporting documentation and guidance – Damp

heat tests

IEC 60068-4 (1987-09) Environmental testing. Part 4 : Information for specification writers – Test Summaries



IEC 61000-1-1 (1992-05) Electromagnetic compatibility (EMC) – Part 1 : General – Section 1: Application and

interpretation of fundamental definitions and terms.

IEC 61000-1-2 (2001-06) Electromagnetic compatibility (EMC) – Part 1-2 : General – Methodology for the

achievement of the functional safety of electrical and electronic equipment with regard to

electromagnetic phenomena.

IEC 62067 (2001-10) Power cables with extruded insulation and their accessories for rated voltages above

150kV (Um = 170kV) up to 500kV (Um = 550kV) – Test methods and requirements

IEC Standards continued

▲ 119

■ Appendix 40

British Standards

BS EN 60051-1 (1999) Direct acting indicating analogue electrical measuring instruments and their accessories.

[IEC 60051-1(1997)] Definitions and general requirements common for all parts.

BS 89-2 (1990) Direct acting indicating analogue electrical measuring instruments and their accessories.

[IEC 60051-2 (1984)] Specification for special requirements for ammeters and voltmeters


[IEC 60051-3 (1984)] Specification for special requirements for wattmeters and varmeters.


[IEC 60051-4 (1984)] Specification for special requirements for frequency meters.


[IEC 60051-5 (1985)] Specification for special requirements for phase meters, power factor meters and

synchroscopes.


[IEC 60051-9 (1988)] Recommended test methods.

BS 148 (1998) Specification for unused and reclaimed mineral insulating oils for transformers and switchgear.

BS 159 (1992) Specification for high-voltage busbars and busbar connections.

BS EN 60076-1 (1997) Power transformers. General

BS 171-5 (1978) Power transformers. Specification for ability to withstand short circuit.

[IEC 60076-5 (1976)]

BS EN 60060-2 (1995) High-voltage testing techniques. Measuring systems

BS 3938 (1973) Specification for current transformers

BS 3941 (1975) Specification for voltage transformers

BS EN 60214 (1998) On-load tap changers

BS 5207(1975) Specification for sulphur hexafluoride for electrical equipment

BS 5209 (1975) Code of practice for the testing of sulphur hexafluoride taken from electrical equipment

BS 5311(1996) High-voltage alternating-current circuit-breakers

BS EN 60947-4-1(2001) Specification for low-voltage switchgear and controlgear. Contactors and motor-starters.

Electromechanical contactors and motor-starters

BS 5685-1(1979) Electricity meters. Specification for class 0.5, 1 and 2 single-phase and polyphase, single rate

and multi-rate watt-hour meters.

BS 5685-2 (1986) Electricity meters. Specification for single-phase coin operated prepayment flat rate and two-

part tariff watt-hour meters of class 2 and fixed charge collectors of class 2.

BS 5685-3 (1986) Electricity meters. Specification for meters having class 1 electro-mechanical maximum demand

indicators.

BS 5685-4 (1986) Electricity meters. Specification for class 3 var-hour meters.

BS 5685-5 (1987) Electricity meters. Specification for input and output switching or logic arrangements for multi-

rate registers for electricity meters.

BS 5685-8 (1991) Electricity meters. Specification for impulse operated multiple registers for use with induction

electricity meters.

BS 5730 (2001) Monitoring and maintenance guide for mineral insulating oils in electrical equipment.

BS 5992-1(1980) Electrical relays. Specification for contact performance of electrical relays

[IEC 60255-0-20 (1974)]

BS 6231(1998) Specification for PVC-insulated cables for switchgear and controlgear wiring.

BS EN 60044-2 (1999) Instrument transformers. Inductive voltage transformers

[IEC 60044-2 (1997)]

▲ 120

Singapore Standards

SS 318 (1987) Current transformers for measurement and protection

SS 404 (1997) Power transformers Part 1: General

SS 404 (1997) Power transformers Part 2 : Temperature rise

SS 404 (2001) Power transformers Part 3: Insulation levels and dielectric tests and external clearances in air

SS 404 (2001) Power transformers Part 5 : Ability to withstand short circuit

SS 404 (2000) Power transformers Part 8 : Application guide SS 443 (1998) Part 1 : Power cables with extruded

insulation and their accessories for rated voltages from 1kV (Um = 1.2kV) up to 30kV (Um =

36kV) – Cables for rated voltages of 1kV (Um = 1.2kV) and 3kV (Um = 3.6kV) SS ISO 9000 (2000)

Quality management systems – Fundamentals and vocabulary

SS ISO 9001 (2000) Quality management systems – Requirements

SS ISO 9004 (2000) Quality management systems – Guidelines for performance improvements

CP 5 (1998) Code of practice for electrical installations

CP 10 (1993) Code of practice for the installation and servicing of electrical fire alarm systems

CP 16 (1991) Code of practice for earthing

CP 19 (2000) Code of practice for the installation and maintenance of emergency lighting and power supply

systems in buildings

CP 31 (1996) Code of practice for installation, operation, maintenance, performance and constructional

requirements of mains failure standby generating systems

CP 33 (1996) Code of practice for lightning protection

Other Standards

IEEE C37.09 Test procedure for A.C high-voltage circuit breakers rated on a symmetrical current basis

ANSI C37.09 (1999)

IEEE 32 (1972) Neutral grounding devices, req term and test procedures

ISO 7-2 (2000) Pipe threads where pressure-tight joints are made on the threads – Part 2: Verification by means

of limit gauges

AEIC CS2 (1997) Impregnated paper and laminated paper polypropylyne insulated cable high-pressure-pipe type

AEIC CS4 (1993) Impregnated-paper-insulated-low and medium pressure self-contained liquid filled cable

ASTM B187 (2000) Standard specification for copper bar, bus-bar, rod and shapes

ASTM B3 (2001) Standard specification for soft or annealed copper wire

■ Appendix 40

powergrid handbook

Documents

transmission connection

load connection

electricity connection

connection voltages

distribution connection

lv connection

ehv connection

metering requirements