scope of work - substations - kenya power a39abcd-section vi... · scope of work - substations ......

SCOPE OF WORK - SUBSTATIONS

As required for effective and completeness of the works relating to

installation, testing and commissioning of the transformer and

associated switchgear

Kenya Power and Lighting Co Ltd VI - i Contract A39 Distribution Reinforcement and Upgrade Technical Specifications and Drawings

4.2Contr A39ABCD-Section VI-SOW-subst R1 JANUARY 2015 KENYA POWER

TABLE OF CONTENTS

4.2 SCOPE OF WORK - SUBSTATIONS .............................................................................................. 3

4.2.1 General ...................................................................................................................................... 3 4.2.2 Standard Substation .................................................................................................................... 4 4.2.3 132 kV Bay ................................................................................................................................. 4

4.2.3.1 Transformer Bay ............................................................................................................................... 4 4.2.3.2 66Kv FeederBay ............................................................................................................................... 4

4.2.4 33 kV Switchgear Outdoor Type ................................................................................................... 5 4.2.4.1 Transformer Bay ............................................................................................................................... 5 4.2.4.2 FeederBay ........................................................................................................................................ 5 4.2.4.3 Bus Bar Protection ............................................................................................................................ 6

4.2.5 11 kV Switchgear Outdoor Type ................................................................................................... 6 4.2.5.1 11 kV Transformer Bay ..................................................................................................................... 6 4.2.5.2 11 kV Feeder Bay ............................................................................................................................. 6 4.2.5.3 Auxiliary Transformer bay ................................................................................................................. 6

4.2.6 11 kV Switchgear Indoor Type ..................................................................................................... 7 4.2.6.1 Switch Board Panel for 11 kV Transformer Bay ................................................................................... 7 4.2.6.2 Switch Board Panel for 11 kV Feeder Indoor panel ............................................................................... 7 4.2.6.3 Switch Board Panel for Indoor Bus- Sectionaliser................................................................................. 7 4.2.6.4 Switch Board Panel for Auxiliary Transformer ..................................................................................... 8 4.2.6.5 Current Transformers for Neutral current measurements ....................................................................... 8 4.2.6.6 Lightning Arresters ........................................................................................................................... 8

4.2.7 Auxiliary transformer for 33/11kV Substations and 66/11kV Substations ......................................... 8 4.2.8 MV Power Cables from Transformer to Indoor Switchgear ............................................................ 8 4.2.9 MV Power Cables from Indoor Switchgear to line termination tower .............................................. 8 4.2.10 Control, Protection, Metering and Signalling ............................................................................ 8

4.2.10.1 Substation Automation System ........................................................................................................... 8 4.2.10.1.1 Scope SCADA/SAS. ................................................................................................................ 9

4.2.10.2 Control and Measuring Cables ............................................................................................................ 9 4.2.10.3 Telecommunications ......................................................................................................................... 9

4.2.10.3.1 Scope of works - Telecommunication .................................................................................... 10 4.2.11 Auxiliary AC Supply Equipment ............................................................................................. 11

4.2.11.1 Main AC Distribution Board ............................................................................................................ 11 4.2.11.2 Sub-distribution Boards and Panels ................................................................................................... 11 4.2.11.3 Cables ............................................................................................................................................ 11

4.2.12 DC Supply System ................................................................................................................. 11 4.2.12.1 Battery ........................................................................................................................................... 11 4.2.12.2 Charger .......................................................................................................................................... 12 4.2.12.3 Switchboard ................................................................................................................................... 12 4.2.12.4 Battery Conductors and Fuses .......................................................................................................... 12 4.2.12.5 Sub-distribution Boards and Panels ................................................................................................... 12 4.2.12.6 Cables ............................................................................................................................................ 12

4.2.13 Earthing System .................................................................................................................... 12 4.2.14 Ancillary Equipment ............................................................................................................. 13

4.2.14.1 Station Equipment ........................................................................................................................... 13 4.2.14.2 Earthing Devices ............................................................................................................................. 13 4.2.14.3 Cable Accessories ........................................................................................................................... 13 4.2.14.4 Racks, Conduits, Ducts, etc .............................................................................................................. 13

4.2.15 Power transformers .............................................................................................................. 13 4.2.1.1 Type of transformers ....................................................................................................................... 13

4.2.2 Civil Works .............................................................................................................................. 14 4.2.2.1 Platform works ............................................................................................................................... 14 4.2.2.2 Switchgear buildings ....................................................................................................................... 14 4.2.2.3 Transformer foundations .................................................................................................................. 14 4.2.2.4 Cable Trenches ............................................................................................................................... 14

4.2.3 Training in control (SAS), Telecommunication and protection system (LS-008a, 008b) ................... 14 4.2.4 Factory Acceptance Test (LS – 001,002,003,004,005,006,007) ..................................................... 14 4.2.5 Test Equipment (TS –001) .......................................................................................................... 15 4.2.6 Final documentation ................................................................................................................. 15 4.2.7 Site Offices and site facilities(LS-010, -011) ............................................................................... 15 4.2.8 Scope of Works ......................................................................................................................... 16

4.2.8.1 Lot KP1/6A-2/PT/1/15/A39A – Diani and Miritini 33/11kV Substations .............................................. 16 4.2.8.1.1 Diani 33/11kV Substation ........................................................................................................ 16 4.2.8.1.2 Miritini 33/11kV Substation ...................................................................................................... 18

Kenya Power and Lighting Co Ltd VI - 2 Contract A39 Distribution Reinforcement and Upgrade Technical Specifications and Drawings


4.2.8.2 Lot KP1/6A-2/PT/1/15/A39B/1 – Matasia, Kabete and Syokimau 66/11kV Substations ............... 22 4.2.8.2.1 Matasia 66/11kV Substation .................................................................................................... 22 4.2.8.2.2 Kabete 66/11kV Substation ..................................................................................................... 23 4.2.8.2.3 Syokimau 66/11kV Substation ................................................................................................. 25

4.2.8.3 Lot KP1/6A-2/PT/1/15/A39B/2 – Gigiri, Cianda and Steel Billets 66/11kV Substations ................ 27 4.2.8.3.1 Gigiri 66/11kV Substation ........................................................................................................ 27 4.2.8.3.2 Cianda 66/11kV Substation ..................................................................................................... 28 4.2.8.3.3 Steel Billets 66/11kV Substation .............................................................................................. 30

4.2.8.4 Lot KP1/6A-2/PT/1/15/A39C – Mangu 132/66kV and Kamburu 132/33kV Substations................ 32 4.2.8.4.1 Mangu 132/66kV Substation works ......................................................................................... 32 4.2.8.4.2 Kamburu 132/33kV Substation works ..................................................................................... 34

4.2.8.5 Lot KP1/6A-2/PT/1/15/A39D – Naivasha and Makutano 132/33kV Substations .......................... 36 4.2.8.5.1 Naivasha 132/33kV Substation works ..................................................................................... 36 4.2.8.5.2 Makutano 132/33kV Substation works .................................................................................... 38

..........................................................................................................................................................



4.2 SCOPE OF WORK - SUBSTATIONS

4.2.1 General

The Bidder shall examine the scope of works in this section in close connection with the

other documents and particulars forming these Bidding Documents.

Special attention shall be paid to General Specifications and Particular Technical

Specifications, in which the general technical requirements are specified. The drawings

enclosed in are for bidding purposes only.

If the Specifications and/or Drawings do not contain particulars of materials or goods, which

are necessary for the proper and safe completion, operation, and maintenance of the

equipment in question, all such materials shall be deemed to be included in the supply.

In the event of any conflict between the Drawings and the Specifications, the latter shall

prevail.

In the event of any conflict between scaled dimensions and figures on the Drawings, the

figures shall prevail.

Should the Bidder find discrepancies in or omissions from these Specifications or from the

other Documents, or should he be in doubt as to their meaning, he should immediately

contact the Project Manager for interpretation, clarification or correction thereof before

submitting his Bid. Such action shall, however, in no case be considered as a cause for

altering the closing date of the Bid.

The scope of work for equipment shall cover engineering design, manufacture, testing

before shipment and packing sea worthy or otherwise as required, delivery CIP site, of all

equipment as specified in the preceding chapters.

For substations contracted on turnkey basis the substation contractor shall be responsible for

design, material supply, transport, erection, and installation and commissioning as well as

having the full responsibility for civil works including design and construction of

transformer foundations and control building.

The Contractor shall design and construct the transformer foundations with oil collection pit,

oil trap and fire damper consisting of crushed stones laying on a galvanised steel grating.

Loose equipment for the Employer’s rehabilitation shall be complete with documentation

and ancillaries like programs, licences and programming tools.

Equipment that is to be dismantled and removed from existing substations is to be recovered

by the Contractor and deposited to sites within or in the immediate vicinity of each

substation. Such sites are to be designated by the Employer. The recovered equipment is to

be taken over by the Employer at these sites.

KPLC has a SCADA (Supervisory, Control & Data Acquisition) system that is controlled

from the Regional Control Centres& the National Control Centre. The National Control

Centre (NCC) is at Juja Rd and controls the entire transmission network & substations (ie

some 66kV, all 132kV, all 220kV & soon to be introduced 400kV stations.)

There are 4 regional control centres in total. These are located in the following locations;

Juja Rd (Nairobi region), Rabai (Coast region), Lessos (West Kenya region) & Kiganjo (Mt

Kenya region). These Regional Control Centres monitor & control the 11KV, 33kV & 66kV

Distribution networks &substations in their specific regions.



The Control Centres all run ABB’s Network Manager WS500 which is the software used for

monitoring & Control of all the incorporated substations. The Communication protocol

currently supported by KPLCs front end servers is ABBs PCU 400, for data telegram

exchange with Remote Terminal Units (RTUs). Whereas, the Station Control Management

Systems (SCMS) in the substations in its SCADA system are IEC 60870-5-101&IEC

60870-5-104.

The automated 132/66/33/11kV Transmission and Distribution substations will be required

to communicate with the front end server (ABB’s PCU400) via the communication

protocols outlined above. The automated sub-Station must communicate with the Regional

Control Centre under which it shall be monitored & controlled.

The interconnected KPLC’s telecommunications system is based on a backbone of SDH

STM1/4 terminal equipment, FOX 515 from ABB. A network management system (NMS)

for the telecommunication system has been installed at NCC.

4.2.2 Standard Substation

This section defines the standard substation components. The actual quantities to be included

in the price schedules are found for each substation in the subsequent sections.

4.2.3 132 kV Bay

4.2.3.1 Transformer Bay

1 (one) complete bay shall be equipped with:

(a) 1 (one) circuit breaker

(b) 2 (two) isolator with motor operation

(c) 1 (one) earthing switch

(d) 1 (one) set of busbars

(e) 1 (one) complete set of three-phase line including clamps for the flying busbars and for

connection between the gantries, to the transformer bushings, to the busbars and to and

between the apparatus.

(f) 1 (one) set of current transformers

(g) 1 (one) set of surge diverters

(h) 1 (one) set of steel structures for support

(i) 1 (one) bay control unit with proper display, for measurements (V,I,MVAR,MW)

(j) Tap changer voltage regulating relay (AVR)

(k) 1 (one) multifunctional protection unit as per 4.1.2.4.2.2 Section VI Particular Technical

specifications substations control, and Protection

(l) HV overcurrent protection relay.

(m) 1 (one) lock-out trip relay with electrical/hand reset facilities

(n) 1 (one) lot of necessary interposing relays, MCB’s, terminal blocks and wiring to form a

complete operative bay control. The control scheme shall be prepared for SCADA

operation.

4.2.3.2 66Kv FeederBay


a. 1 (one) circuit breaker

b. 2 (two) isolator with motor operation

c. 1 (one) earthing switch

d. 1 (one) set of busbars

e. 1 (one) complete set of three-phase line including clamps for the flying busbars and for



connection between the gantries, to the busbars and to and between the apparatus.

f. 1 (one) set of current transformers

g. 1 (one) set of voltage transformers

h. 1 (one) set of surge diverters

i. 1 (one) set of steel structures for support

j. 1 (one) set of control/protection panel

k. 1 (one) bay control unit with display and measuring functions

l. 1 (one) multifunctional protection unit as per 4.1.2.4.2.1

m. 1 (one) lock-out trip relay with electrical/hand reset facilities

n. 1 (one) lot of necessary interposing relays, MCB’s, terminal blocks and wiring to form

a complete operative bay control. The control scheme shall be prepared for SCADA

operation.

4.2.4 33 kV Switchgear Outdoor Type

4.2.4.1 Transformer Bay






e. 1 (one) complete set of three-phase line including clamps for the flying busbars

and for connection between the gantries, to the transformer bushings, to the

busbars and to and between the apparatus.


g. 1 (one) set of surge diverters

h. 1 (one) set of steel structures for support

i. 1 (one) bay control unit with proper display, for measurements (V,I,MVAR,MW)

j. Tapchanger voltage regulating relay (AVR)

k. 1 (one) multifunctional protection unit as per 4.1.2.4.2.2 Section VI Particular

Technical specifications substations control, and Protection

l. HV overcurrent protection relay.


n. 1 (one) lot of necessary interposing relays, MCB’s, terminal blocks and wiring to

form a complete operative bay control. The control scheme shall be prepared for

SCADA operation

4.2.4.2 FeederBay






e. 1 (one) complete set of three-phase line including clamps for the flying busbars

and for connection between the gantries, to the busbars and to and between the

apparatus.


g. 1 (one) set of surge diverters

h. 1 (one) set of voltage transformers

i. 1 (one) set of steel structures for support

j. 1 (one) set of control/protection panel

k. 1 (one) bay control unit with display and measuring functions

l. 1 (one) multifunctional protection unit as per 4.1.2.4.2.1




n. 1 (one) lot of necessary interposing relays, MCB’s, terminal blocks and wiring

to form a complete operative bay control. The control scheme shall be prepared

for SCADA operation.

4.2.4.3 Bus Bar Protection

1 (one) bus bar protection unit included in the control panel for all 66 kV and 33KV bus

bars.

4.2.5 11 kV Switchgear Outdoor Type

4.2.5.1 11 kV Transformer Bay


(a) 1 (one) Autorecloser/circuit breaker

(b) 1 (one) earthing switch

(c) 1 (one) set of busbars

(d) 1 (one) set of current transformers

(e) 1 (one) set of surge diverters

(f) 3 (three) sets of air break switches

(g) 1 (one) neutral current transformer

(h) 1 (one) bay control unit with display and measuring functions

(i) 1 (one) restricted fault relay function

(j) 1 (one) neutral point earth fault relay function

(k) 1 (one) lock-out trip relay with electrical/hand reset facilities

(l) 1 (one) lot of necessary interposing relays, MCB’s, terminal blocks and wiring to form a


operation.

(m) 1 (one) set of voltage transformers (with a facility for primary isolation)

4.2.5.2 11 kV Feeder Bay


(a) 1 (one) Autorecloser/circuit breaker

(b) 1 (one) earthing switch

(c) 1 (one) set of busbars

(d) 1 (one) set of current transformers

(e) 1 (one) set of surge diverters

(f) 1 (one) bay control unit with display and measuring functions

(g) 1 (one) 3-phase over current relay function with auto re-close function. The auto-reclose

function must be selectable with an external switch

(h) 1 (one) Earth fault relay function

(i) 1 (one) sensitive Earth fault function

(j) 1 (one) restricted fault relay function (if not provided on the HV transformer bay panel)

(k) 1 (one) lot of necessary interposing relays, MCB’s, terminal blocks and wiring to form a


operation.

Note: 11KV Capacitor bank switchgear shall be equipped with the necessary protection and

control relays for Capacitor banks. .

4.2.5.3 Auxiliary Transformer bay

1 (one) complete bay equipped with:



(a) 1 (one) set of expulsion fuses

(b) 1 (one) set of busbars jumpers

4.2.6 11 kV Switchgear Indoor Type

4.2.6.1 Switch Board Panel for 11 kV Transformer Bay


a) 1 (one) Withdrawable circuit breaker

b) 1 (one) earthing switch

c) 1 (one) set of busbars

d) 1 (one) set of current transformers

e) 1 (one) bay control unit with display and measuring functions

f) 1 (one) restricted fault relay function

g) 1 (one) neutral point earth fault relay function

h) 1 (one) lock-out trip relay with electrical/hand reset facilities

i) 1 (one) lot of necessary interposing relays, MCB’s, terminal blocks and wiring to form a


operation.

j) 1 (one) set of voltage transformers (with a facility for primary isolation)

4.2.6.2 Switch Board Panel for 11 kV Feeder Indoor panel


a) 1 (one) circuit breaker

b) 1 (one) earthing switch

c) 1 (one) set of busbars

d) 1 (one) set of current transformers

e) 1 (one) bay control unit with display and measuring functions

f) 1 (one) 3-phase over current relay function with auto re-close function. The auto-reclose

function must be selectable with an external switch

g) 1 (one) Earth fault relay function

h) 1 (one) sensitive Earth fault function

i) 1 (one) restricted fault relay function (if not provided on the HV transformer bay panel)

j) 1 (one) lot of necessary interposing relays, MCB’s, terminal blocks and wiring to form a


operation.

Note: 11KV Capacitor bank switchgear shall be equipped with the necessary protection and

control relays for Capacitor banks.

4.2.6.3 Switch Board Panel for Indoor Bus- Sectionaliser


(a) 1 (one) circuit breaker

(b) 1 (one) set of protection current transformers.

(c) 2 (two) earthing switches (one on each busbar section if not located elsewhere)

(d) 1 (one) set of busbars including droppers and risers

(e) 2 (two) set of voltage transformers (one on each busbar section if not located elsewhere)

(f) 1 (one) bay control unit with display

(g) 1 (one) overcurrent function and 1 (one) relay function

(h) 1 (one) lot of necessary interposing relays, MCB’s, terminal blocks and wiring to form a

complete operative bay control. The control scheme shall be prepared for remote

operation.



4.2.6.4 Switch Board Panel for Auxiliary Transformer

1 (one) complete bay equipped with:

a) 1 (one) fuse switch disconnector, manual

b) 1 (one) set of fuses

c) 1 (one) earthing switch

d) 1 (one) bay control unit

e) 1 (one) set of busbars

f) 1 (one) set of wiring, terminal blocks, etc. to form a complete bay control.

4.2.6.5 Current Transformers for Neutral current measurements

(a) 2 (two) current transformers for neutral current measurements one on each winding

4.2.6.6 Lightning Arresters

(a) 66kV and 33kV lightning arrestors erected close to HV side of power Transformer

(b) 3 (three) 11 kV lightning arresters erected close to LV side of power transformer

4.2.7 Auxiliary transformer for 33/11kV Substations and 66/11kV Substations

(a) 1 (one) 33/0.4 kV auxiliary transformer, 100 kVA, Dyn11 with built on low voltage

fuses. The transformers shall be installed outdoor on the 33kV Busbar.

(b) 2 (two) 11/0.4kV auxiliary transformers 100kVA, Dyn11 shall be installed in the

66/11kV Substations. The transformers shall be installed indoor and shall be of enclosed

bushing type.

4.2.8 MV Power Cables from Transformer to Indoor Switchgear

(a) 1 (one) lot of 11 kV cable from main transformers to 11 kV switchgear, rated for 120 %

of nominal transformer rating

(b) 1 (one) lot of 11 kV cable terminations for transformer and switchgear connection

(c) 1 (one) lot of support structures for lightning arresters and transformer connection

(d) 1 (one) lot of 11 kV cable from switchgear to auxiliary transformer

(e) 1 (one) lot of 11 kV cable terminations for auxiliary transformer and switchgear

connection

(f) 1 (one) lot of support structures for auxiliary transformer.

4.2.9 MV Power Cables from Indoor Switchgear to line termination tower

a) 1 (one) lot of 11 kV cable from indoor 11 kV switchgear to terminal tower

b) 1 (one) lot of 11 kV cable terminations for switchgear connection and line connection

c) 1 (one) lot of support structures for cable terminations in terminal tower and surge

arrestors

4.2.10 Control, Protection, Metering and Signalling

4.2.10.1 Substation Automation System

General 1 (one) lot complete system (equipment and software) for substation control.

To the extent the internal control and interlocking system for the equipment supplied is not

included for that particular equipment, it shall be included herein. All interconnections



needed to form a complete installation shall also be included herein.

The control system specified hereunder shall include all necessary equipment for control,

protection, metering and signalling. The system shall include all instruments, meters,

switches, position indicators, inscriptions and mimic diagrams, protective and auxiliary

relays, terminal blocks, internal wiring and any other equipment required to form a complete

installation.

Drawings showing the control system, protection units and the boards as they are proposed

shall be supplied with the Bid.

The space needed for the boards should not exceed the available space.

Information defining the internal local control communication protocol shall be submitted

with the Bid.

Complete sets of schematic diagrams for control, protection, indication, metering, signalling,

alarms, etc. shall be supplied as part of the project and shall be subject to the Project

Manager's approval.

The requirements as to submission of diagrams, drawings and other documents with the Bid

and after award of Contract are stated in the standard form of contract.

4.2.10.1.1 Scope SCADA/SAS.

(a) For New substations: 1 (one) lot complete system (equipment and soft ware), with

communication gateway, data concentrator etc. for interface to a regional (RCC)

SCADA system and to the national (NCC) SCADA system.

(b) For existing Substations with SAS/RTU in operation. One complete (lot) extension of

the SAS/RTU to accommodate the additional switchgear. This shall include Hardware

and software and necessary Engineering.

For a point-to-point communication link the IEC 60870-5-101 protocol shall be

implemented.

As part of the supply necessary engineering of the substation signal list (I/O list) shall be

included. The engineering shall be carried out on the format prescribed to KPLC by the

SCADA contractor.

4.2.10.2 Control and Measuring Cables

(a) All external cables, conventional or fibre optical, for control, protection, measuring,

indication, etc., for the complete plant. Wiring between the switchyard apparatus,

transformers, the board(s) and the control system in the control building and the

interconnections between the various apparatus in the switchyard shall be included.

4.2.10.3 Telecommunications

a) In order for the SCADA data to be transferred to the Regional control centres, the

bidder shall design and commission an appropriate communication system based on

Fibre, PLC, Radio or other approved communication media for data and speech

requirement.

Equipment supplied shall be digital and latest technology and shall comply to the latest

ITU-T, IEC, ITU-R, IEEE and ETSI standards.

It is required that one remote subscriber be implemented in each substation.

Interface for data transmission shall be according to ITU-T recommendation V.24 or

V.35

Bit error rates of 1x10-6

shall not be exceeded.



b) It is the responsibility of the contractor to interconnect with existing SCADA and

Telecommunications system. However use and extension of existing infrastructure

where possible shall be encouraged.

c) The Tenderer shall acquaint himself with all the sites and determine the requirements

for towers or masts to suit his design. When a new tower or mast is necessary is

necessary, the Tenderer shall supply drawings for the proposed installation. All towers

shall be 36 m and self supporting. The tenderer shall provide details of loading and guy

stresses for masts or towers to be erected on buildings. All antennae mounting

components including wave-guides, cables, cable clamps and external cable connectors

shall be specified.

d) Where PLCs are to used or where the T-offs affect existing PLC communication links,

blocking line-traps including support strucures shall be in scope of supply.

e) All communications equipment installed in the country must be type approved by the

Communications Commission of Kenya (CCK). The Contractor will obtain the type

approval.

The CCK has to be consulted and give approval for each new project and an

application has to be submitted stating the location of the sites and request for the

frequencies to be used. Unless otherwise stated this application for frequencies is

normally done by KPLC.

The radio frequency plan shall be prepared by the Contractor and closely coordinated

with KPLC during the project design stage. All path surveys shall be carried out by

contractor.

f) The Contractor shall provide a list of recommended spares, the quantities and prices to

last for a period of five (5) years after expiry of guarantee period.

g) The contractor shall offer training for four (4) technical appointees of the employer for

2 weeks at manufacturer’s premises. Terms and conditions similar to 4.2.15

h) The contractor shall provide necessary configuration software pre-installed on a

maintenance laptop with a one time software license.

4.2.10.3.1 Scope of works - Telecommunication

The scope as described shall include detailed system design, manufacture, supply, installation, testing,

commissioning, remedying of defects, maintaining the works during the defects liability period and

any incidental work necessary for the proper completion of the work in accordance with this contract.

Scope shall include integration of STM-4, to the existing KPLC Network Management System. In

some cases there shall be need to upgrade existing Telecommunication equipment in order to achieve

data and speech routing to Regional and National control centres. Survey and necessary preparation

works on existing systems, Equipment and substations to achieve specified functionality shall be in

the scope of supply. Contractors shall be required to submit for approval detailed design of system

before manufacture.

The STM 4 equipment shall include Tele-protection modules (4 Command), High Speed Ethernet

modules and 1+1 protection.

Necessary upgrade of communication and SCADA Front Ends (PCUs) equipment at terminal stations

and at Control centres shall achieve complete Data and Speech to RCC/NCC shall be included in

scope.

In addition all substations (irrespective of whether SCADA functionality to control centre is

established) shall be equipped with a Base Radio capable of communicating with the ASTRO trunking

radio system for use during switching operations. Where OLTEs are the terminal equipment,

additional Ethernet capability shall be established to cater for other corporate data. All stations shall

be equipped with two (2N0.) telephone extensions originating from existing PAXes in Regional

control centres.



All communication equipment supplied under this project shall be type approved by the regulator,

Communication Commission of Kenya (CCK) and the Kenya Bureau of Standards (KBS) where

applicable. It is the responsibility of the contractor to obtain these necessary approvals.

The type of required communication link shall be detailed in scope of supply for individual stations.

4.2.11 Auxiliary AC Supply Equipment

4.2.11.1 Main AC Distribution Board

1 (one) main distribution board designed for minimum 200 A with the necessary number of

panels for:

(a) 1 (one) circuit breaker, manual operated, minimum 200 A, for the feeder from the station

supply transformer.

(b) 2 (two) current transformers 200/1/1 A with two cores, one core for measuring and one

for protection.

(c) 1 (one) constant time overcurrent relay.

(d) 1 (one) earth fault relay.

(e) 1 (one) A-meter function with selector switch.

(f) 1 (one) V-meter function with selector switch.

(g) 1 (one) lot of feeder circuit breakers with electro-BAHnetic and thermal releases. The

breaker ratings shall be chosen to suit the different consumers to be connected. 20% of

the breakers of each size shall be spare and readily mounted.

4.2.11.2 Sub-distribution Boards and Panels

(a) 1 (one) lot of all necessary sub-distribution boards and panels (including the distribution

panel for lighting and small power of the control building).

The boards shall be completely equipped with busbars, circuit breakers, miniature circuit

breakers etc. Contactors, motor starters, instruments, operating switches, push buttons,

indicating lamps, etc., shall be included whenever required. 20% of the breakers of each size

shall be spare and readily mounted.

4.2.11.3 Cables

(a) 1 (one) lot of all necessary armoured power and control cables for supply to the main

distribution board and to the sub-distribution boards, panels and equipment except for

the cables for lighting and small power which are included in the civil Goods under

separate contract.

4.2.12 DC Supply System

4.2.12.1 Battery

i. (1 (one) 110 V battery. Capacity at least 200 Ah/10h for substations with more than 10

MVA installation of transformer capacity

ii. The 48V batteries shall be included in the bid for communication equipment and the

RTU. The battery shall be at least 100A/10Ah

The capacities to be recommended by the Bidder, based upon the calculated consumption

considering a fully developed substation.

Batteries shall be installed in separate room with EX proof ventilation fan (for 110 V

batteries only).



4.2.12.2 Charger

(a) 1 (one) DC charger for the 110 V battery.

(b) 1 (one) DC charger for the 48 V Battery.

The chargers shall be complete with instruments, breakers on AC and DC side, and

protection.

4.2.12.3 Switchboard

1 (one) switchboard 110 V DC.

The board shall have:

(a) 1 (one) circuit breaker with BAHnetic and thermal release for the feeder from earache

charger and battery.

(b) 1 (one) A-meter with shunt for each battery.

(c) 1 (one) V-meter with selector switch for the voltage between the poles and between

poles and earth for each battery.

(d) 1 (one) set of contacts on the front for banana jacks for the battery voltage and earth.

(e) 1 (one) battery monitoring devices with alarm contacts.

(f) 1 (one) lot of all necessary circuit breakers and miniature circuit breakers for the

outgoing feeders and circuits.

20% of the breakers of any size shall be spare and readily mounted.

4.2.12.4 Battery Conductors and Fuses

(a) 1 (one) set of conductors for the battery in the battery room.

(b) 2 (two) single pole fuse boxes with main fuses for the battery, placed on the wall outside

of the battery room, and two fuses for the battery monitoring device.

4.2.12.5 Sub-distribution Boards and Panels

(a) 1 (one) lot of all necessary sub-distribution boards and panels.

The boards shall be completely equipped with busbars, miniature circuit breakers, fuses, etc.

Contactors, motor starters, instruments, operating switches, push buttons, indicating lamps,

under-voltage relays with alarm contact, etc., shall be included whenever needed.

4.2.12.6 Cables

(a) 1 (one) lot of all necessary DC power supply cables, including wiring to the apparatus

in the switchyard.

4.2.13 Earthing System

An earthing network shall be installed comprising the following:

(a) 1 (one) lot of underground earthing system covering the platform and control building

with risers

(b) 1 (one) complete set of "above-floor" earthing system for the control building, as

applicable, with connections to the risers from the under-ground system.



4.2.14 Ancillary Equipment

4.2.14.1 Station Equipment

(a) 2 (two) self-contained, rechargeable, portable hand-held lights.

(b) 1 (one) audible alarm system with the necessary wiring.

4.2.14.2 Earthing Devices

(a) 1 (one) set of three phase portableearthing devices for outdoor 33kV with operating rods

suitable for earthing of the bay conductors and busbars.

(b) 1 (one) set of voltage indicator for 33 kV and 11KV with audible and visual indication

for voltage

4.2.14.3 Cable Accessories

(a) 1 (one) lot of all connecting material, cable boxes and material for fixing the cables.

Terminals and terminal labels to the extent that this is not included in other sections.

4.2.14.4 Racks, Conduits, Ducts, etc

(a) 1 (one) lot of all cables, racks and trays to the extent necessary for the proper

distribution of cables.

All the conduits and protection tubes, wherever cables may deteriorate or where cable laying

may otherwise present difficulties.

4.2.15 Power transformers

To be supplied as specified for each sub station, and in accordance with below data.

4.2.1.1 Type of transformers

Main data for the transformers that shall be supplied:

Pos. Rating MVA

(ONAN/ONAF)

Voltage Tapping range OLTC

1 35/45 66/11 yes

2 18/23 132/33 yes

3 18/23 66/11 yes

4 18/23 33/11 yes

5 15/n.a 132/33 yes

6 7.5/n.a 33/11 yes

7 2.5/n.a 33/11 ± 2*2.5 % no

Transformers in Coastal region- shall be of vector group: Ynynd1 (with stabilizing

winding).

Transformers in Nairobi region- shall be of vector group: Dyn1

Transformers in West Kenya region -shall be of vector group: Dyn11



4.2.2 Civil Works

4.2.2.1 Platform works

Platform with fence roads and ditches shall be constructed as specified in particular

specifications and in scope of work.

4.2.2.2 Switchgear buildings

Switchgear buildings shall be constructed as specified in particular specifications and in

scope of work.

Control Panels and medium voltage indoor switchgears of different Voltage levels shall be

installed in separate rooms

4.2.2.3 Transformer foundations

Transformer foundations shall be constructed as specified particular specifications and in

scope of work.

4.2.2.4 Cable Trenches

Cable trenches shall be constructed as specified in particular specifications and in scope of

work.

4.2.3 Training in control (SAS), Telecommunication and protection system (LS-008a, 008b)

The training includes travel for the 4 (four) KPLC engineers as well as all course material

and other expenses shall be catered by the Contractor. The training shall be held at the

manufacturer's place. The training shall cover design, application, testing, commissioning

and maintenance of the relevant digital control and protection systems. The training course

shall have a minimum of 2 (two) weeks duration for SAS and Protection and one week for

communication. The cost of per diem and accommodation shall be met by KPLC.

4.2.4 Factory Acceptance Test (LS – 001,002,003,004,005,006,007)

The Contractor shall arrange for 2 participants from KPLC and the Project Manager to

witness tests of major equipment listed below in the manufacturer’s plant. All routine tests

shall be carried out in the presence of the Employer’s representatives. The representatives

shall approve shipment of the equipment if they are satisfied that the requirements of the

specification are fully met

The Contractor shall arrange and meet the full cost of the air tickets and local transportation

Circuit breakers

Protection and control system

Transformers

Indoor switchgear

Power Cables

Instrument transformers

Disconnectors/ Isolators

SAS

Telecommunications Equipment FAT shall be carried out as prescribed in the particular technical specifications of the

equipment. The cost of per diem and accommodation shall be met by KPLC.



4.2.5 Test Equipment (TS –001)

Lap top computers: Two units per Lot, set up with comprehensive software. The pc

shall be supplied with all the necessary accessories and ports and loaded with latest

operating system. The Lap top must be able to run all the relay and equipment

software’s supplied under the contract. The lap top specifications shall be approved

by the project manager. The Test equipment for Telecommunications shall be as

described in 4.1.6

4.2.6 Final documentation

As built drawings: 5 paper copies delivered in binders

3 CD-ROM copy (all drawings in auto card )

1 set of transparencies

Operation and maintenance manuals: 2 copies per equipment

4.2.7 Site Offices and site facilities(LS-010, -011)

At the location where the Contractor will establish his main site administration:

At the location where the Contractor will establish his main site administration, an

office for site supervisors from the Project Manager with basic office furniture,

internet, telephone and access/use of fax and copier shall be provided by the

contractor for the implementation period

The contractor shall provide mobile phone for coordination of activities with project

manager and KES 10,000(ten thousand) monthly.



4.2.8 Scope of Works

4.2.8.1 Lot KP1/6A-2/PT/1/15/A39A – Diani and Miritini 33/11kV

Substations

4.2.8.1.1 Diani 33/11kV Substation

The scope of works include

Reconstruction and realignment of 33kV line bays to accommodate 6No line bays

Establishment of 1No transformer bays complete with protection and control equipment.

Transportation, positioning testing and commissioning of new transformer.

Extension of the switchgear room and rearrangement of the equipment to accommodate

additional feeder panels.

Reconstruction of the access road

Recovery of disused structures

Clarifications of scope of works

Introduce a 33kV isolator to break the 33kV Busbar

Relocate the VTs to the end for the bus bar and introduce new sets of VTs on the transformer

bays.

Realign the existing equipment to provide 6No 33kV line bays.

Reposition the existing line termination gantry and provide additional gantries for the

additional 5No line bays.

Establish a new transformer bay in line with the 2nd

line bay

Establish oil separation pit for the new transformer unit.

Redesign the substation lighting system to LED technology with automatic control system.

Install additional 5No 11kV panels, 11kV incomer panel and Bus Coupler. The bidder shall

provide an adaptor panel to couple the new switchgear to the existing panels.

Recover disused AVRs, RVE and other disused equipment and the unipot structure to

Mbaraki Stores.

Introduce distance protection on the lines.

Switchgear room modifications

o Extend the switchgear room in L-shape nature to provide room for the 33kV

panels and communication room

o Extend the 11kV panel room complete with trenches to the existing 33kV panel

room

o Introduce a kitchenette in the operator room.

o Repair the switchgear room doors; seal vents and make the room airtight

o Reposition the battery room door to the rear with a walkway on the rear of the

building. Seal the trenches in the battery room and make the room short circuit

proof.

o Raise the installation position of the air conditioner

o Introduce 3No additional air conditioners

o Provide emergency lighting for the switchgear room and rehabilitate the internal

wiring system

o Install panic door furniture and modify the door locking mechanism.

o Provide a ramp entry to the switchgear room instead of stairs.



o Introduce a 10,000 liter water tank on a plinth with water harvesting, piping and

pumping. Replace the gutters complete with new fascia board. Replace the

overhead tank with a 1000 liter tank.

Reposition the gate to realign with the new substation road; repaint the gate to Kenya Power

standard colors; reposition pedestrian gate on the side of the guard house; provide adequate

signage.

Road works improvements

o Rehabilitate the existing concrete substation road to a class 25 of concrete and

marry with new road extension.

o Provide a new substation road to the new transformer platform and switchgear

room to cabro standard with parking.

o Provide metal cover for existing manhole or reposition the same.

o Reconstruct the access road from the main road to the gate providing for drainage

culverts.

Refurbish the cable trenches and replace all the existing trench covers.

Repair the broken boundary fence.

Design new drainage system for the substation including drainage for access road

The new transformer shall be collected from Naivasha 132/33kV substation. The bidder shall

test, disassemble, transport, assemble and test the transformer.

Diani 33/11kV Substation works

Item no. Item Unit Quantity

Equipment/materials:

DNI-001 23 MVA, 33/11 kV Transformer Pc 1

DNI-002 33 kV Circuit Breaker Pc 7

DNI-003 33 kV motorized Isolator without earth switch Pc 9

DNI-004 33 kV motorized Isolator with Earth Switch Pc 6

DNI- 005 33 kV Current Transformer Pc 21

DNI-006 33Kv Voltage Transformer Pc 6

DNI-007 33 kV Bay/Busbar Material Lot 1

DNI-008 Steel Structures for support Lot 1

DNI- 009 33 kV Surge Arresters with counters Pc 21

DNI-010 33 kV Transformer Protection and Control Panel and RTTC panel Pc 1

DNI-011 33 kV Line protection and Control Panel Pc 6

DNI-012 11 kV Neutral Current Transformer Pc 1

DNI-013 11 kV Neutral Link Pc 1

DNI-014 Switch Board Panel for 11 kV Transformer Bay Pc 1

DNI-015 Switch Board Panel for 11kV Feeders Pc 5

DNI-016 Switch Board Panel for 11 kV Bus section Pc 1

DNI-017 Adaptor panel for 11kV Switchboard Pc 1

DNI-018 11 kV Surge Arresters Pc 3

DNI-019 MV Power Cables between Transformer and switchgear - S/C 630 mmsq complete with terminations. Lot 1

DNI-020 Substation control Management system (SCMS) extension Lot 1

DNI-021 Control and measuring cables Lot 1

DNI-022 Auxiliary AC supply modifications Lot 1



DNI-023 Earthing system improvements Lot 1

DNI-024 Ancillary Equipment Lot 1

DNI-025 Switchyard Lighting system extension Lot 1

DNI-026 Lightning protection system modifications Lot 1

Works

DNI - 401 Transformer Foundation and oil separation pit Lot 1

DNI – 402 Switchgear Building Extension and rehabilitation Lot 1

DNI – 403 Platform Works Lot 1

DNI – 404 Cable trenches Lot 1

DNI – 405 Erection and commissioning Lot 1

DNI – 406 Transformer testing, dismantling, reassembly and testing

Lot 1

DNI – 407 Transportation of new transformer Lot 1

DNI – 408 Recovery works of disused structures and equipment

Lot 1

DNI – 409 Telecoms / SCADA Installation and commissioning

Lot 1

DNI – 410 Substation Automation integration Lot 1

DNI – 411 Main gate and fence works Lot 1

DNI – 412 Access road works Lot 1

DNI – 413 Substation road works Lot 1

DNI – 414 Substation drainage works Lot 1

DNI – 415 Substation Lighting and Lightning installation works

Lot 1

DNI – 416 Earthing refurbishment Lot 1

DNI – 417 Excavation, backfilling and ballast works Lot 1

DNI – 418 Substation structures installation Lot 1

4.2.8.1.2 Miritini 33/11kV Substation

The scope of works include

Extension and modification of 33kV Busbar to provide 5No incomer bays

Establishment of 1No new transformer bay with protection and control equipment.

Repositioning and realignment of the existing transformer and associated equipment to the

platform

Transportation, installation, assembly and testing of a new transformer

Extension of the switchgear room and rearrangement of the equipment to accommodate

additional feeder panels. Rehabilitation of the toilet and water tank

Reconstruction of the access road to the new transformer bays and new access road to the

switchgear room and parking area.

Recovery of equipment and line materials and demolition of existing disused structures.

Construction of boundary wall, gate and rehabilitation of cable trenches.


Extend the 33kV Busbar to provide one extra line bay towards the control room

Establish 2No new 33kV line bays (Bays 1 and 5)



Establish a new transformer bay offset from bay 3.

Reconstruct the transformer platform for the existing bay to provide for oil collection.

Provide oil separation unit adequate for the two transformers.

Install 5No additional 11kV feeder panels, an 11kV incomer panel and a bus coupler panel.

The bidder shall provide an adaptor panel to couple the existing panels to the new ones.

Establish a firewall between the two transformers.

Recover the disused lines and equipment to Mbaraki stores.

Redo the lightning protection system to cover the transformers and other equipment and

replace wooden structures with steel.

Install adequate LED technology substation lighting with automatic control.

Install terminal structures for the 2No additional 33kV line bays and galvanize the 2No older

bays (Bays 3 and 4)

Works for Bay 2:

o Introduce surge diverters with counters and earthing.

o Replace the 2No Air break switches with motorized isolators.

Repaint the existing control boxes

Use copper tubes for the substation wiring for all the line and transformer bays. However,

the Busbar remains as is.

Switchgear room modifications:

o Extend the switchgear room on both sides; to the left provide for communication

room, operator room, toilet and kitchenette; to the right extension for additional

11kV panels.

o Relocate the communication equipment to the new room

o Relocate the battery charger to align with the LVAC board.

o Make the panel rooms airtight by sealing the doors.

o Provide air conditioning systems for the panel rooms and the operator room

o Correct the battery room door to open outwards and make the room short circuit

proof by sealing the trenches. Reposition the extractor fan to enable the extension

of the room.

o Provide emergency lighting in the switchgear room and rehabilitate the room

internal wiring.

o Establish a 10,000 liter water tank mounted on a plinth with rain water

harvesting, piping and pumping facilities.

o Replace the overhead toilet tank with 1,000 liter plastic tank

Construct a substation road to cabro standards to the transformer platforms and the control

room. Also provide adequate parking with cabro finish.

Rehabilitate the existing cable trenches and replace all the existing trench covers.

Erect a 2.7M boundary wall on the front side of the substation. Replace the gate with a

standard solid gate with a separate guard entry gate.

Screen off the guard area using chain link and provide a walkway to the existing toilet.

Excavate and backfill the substation with imported material. Provide weed control treatment

and re-ballast the station providing adequate drainage.

Connect the station to water supply and transfer to KPLC on completion of the works.

KPLC to remove the scrap materials left in the yard.

The new transformer shall be collected from Naivasha 132/33kV substation. The bidder shall

test, disassemble, transport, assemble and test the transformer.



Miritini 33/11kV Substation works

Item no. Item Unit Quantity


MRTN-001 23 MVA, 33/11 kV Transformer Pc 1

MRTN-002 33 kV Circuit Breaker Pc 3

MRTN-003 33 kV motorized Isolator without earth switch Pc 5

MRTN-004 33 kV motorized Isolator with Earth Switch Pc 3

MRTN- 005 33 kV Current Transformer Pc 9

MRTN-006 33Kv Voltage Transformer Pc 6

MRTN-007 33 kV Bay/Busbar Material Lot 1

MRTN-008 Steel Structures for support Lot 1

MRTN- 009 33 kV Surge Arresters with counters Pc 15

MRTN-010 33 kV Transformer Protection and control and RTTC Panels Pc 1

MRTN-011 33 kV Line protection and Control Panel Pc 3

MRTN-012 11 kV Neutral Current Transformer Pc 2

MRTN-013 11 kV Neutral Link Pc 2

MRTN-014 Switch Board Panel for 11 kV Transformer Bay Pc 1

MRTN-015 Switch Board Panel for 11kV Feeders Pc 5

MRTN-016 Switch Board Panel for 11 kV Bus section Pc 1

MRTN-017 Adaptor panel for 11kV switchgear Pc 1

MRTN-018 11 kV Surge Arresters Pc 5

MRTN-019 MV Power Cables between Transformer and switchgear - S/C 630mmsq complete with terminations. Lot 1

MRTN-020 Substation control Management system (SCMS) extension Lot 1

MRTN-021 Control and measuring cables Lot 1

MRTN-022 Auxiliary AC supply modifications Lot 1

MRTN-023 DC supply modifications Lot 1

MRTN-024 Earthing system extension Lot 1

MRTN-025 Ancillary Equipment Lot 1

MRTN-026 Switchyard Lighting system Lot 1

MRTN-027 Substation lighting and lightning protection system Lot 1

Works

MRTN-401 Transformer Foundation and oil separation pit and firewall

Lot 1

MRTN-402 Switchgear Building Extension and rehabilitation

Lot 1

MRTN-403 Platform Works Lot 1

MRTN-404 Cable trenches Lot 1

MRTN-405 Erection and commissioning Lot 1

MRTN-406 Dismantling and reassembly of transformer and accessories to new platform

Lot 1

MRTN-407 Relocation of transformer to new platform Lot 1

MRTN-408 Transportation and Positioning of new transformer

Lot 1

MRTN-409 Testing, disassembly, Assembly and Testing of transformer

Lot 1

MRTN-410 33kV Busbar extension works Lot 1



MRTN-411 Recovery works for structures and equipment and lines to be removed

Lot 1

MRTN-412 Guarding area demarcation, gate, boundary wall works

Lot 1

MRTN-413 Telecommunications and SCADA Installation and commissioning

Lot 1

MRTN-414 Substation Automation integration Lot 1

MRTN-415 Substation road and parking works Lot 1

MRTN-416 Substation drainage works Lot 1

MRTN-417 Substation Lighting and Lightning installation works

Lot 1

MRTN-418 Earthing refurbishment Lot 1

MRTN-419 Excavation, backfilling and ballast works Lot 1

MRTN-420 Substation structures installation Lot 1



4.2.8.2 Lot KP1/6A-2/PT/1/15/A39B/1 – Matasia, Kabete and Syokimau 66/11kV Substations

4.2.8.2.1 Matasia 66/11kV Substation

The works involve construction of a new 66kV transformer bay; installation of 1No new

transformer 23 MVA, 66/11 kV complete with a control panel and tap changer panel;

The existing switchgear room will be modified and the equipment rearranged to accommodate

the additional equipment.

The lighting masts and lightning arrestor masts on wooden poles will be recovered and new steel

structure masts erected at the required locations.


Modification of LVAC board to auto changeover unit

Install a 13 panel 11kV switchboard. The existing 11kV SF6 boards to be retired.

Terminate the existing 11kV lines to the new feeder panels.

Upgrade the substation automation system

Switchgear room modifications:

o Extend the switchgear room to the left for additional panels and provide toilet and

kitchenette to the right.

o Install a new septic tank near the existing pit latrine and connect the new CRB

toilet.

o General repairs to the control room (leaking roof), change lighting to LED

technology

o Install emergency lighting system.

o Provide 10,000 litre water storage ground mounted tank with rain water

harvesting, water piping and pumping facilities.

Provide oil separation unit adequate for the two transformers.

Reconstruct the substation earthing system to the current standard grid system.

Change the substation lighting system to use LED technology and steel structures

Convert line entry point on wooden poles to steel gantries.

Replace the gate with standard solid gate with a separate guard access gate. The guard area

to be barricaded with chain link and provide a walkway to the toilet area/pit latrine

Repair and improve the cabro access road to the station. New transformer to be collected from Nairobi South or Ruaraka Store.

Second Transformer at Matasia Substation

Item no. Item Quantity


MTS-001 23 MVA, 66/11 kV transformer 1

MTS-002 66 kV Circuit Breaker 2

MTS-003 66 kV Isolator 3

MTS-004 66 kV Isolator with Earth Switch 1

MTS-005 66 kV Current Transformer 6

MTS-006 66 kV Bus bar Material and Bay Material 1 Lot

MTS-007 Steel Structures for support 1 Lot

MTS-008 66kV Surge Arrestors with counters 6

MTS-009 66 kV Transformer Protection Panel and control and RTTC panel 1

MTS-010 66 kV RTTC Panel 1



MTS-011 66 kV Line Protection Panel 1

MTS-012 11 kV Neutral CT 1

MTS-013 13 Panel 11kV Switch Board 1

MTS-014 11 kV Surge Arresters 3

MTS-015 Auxiliary transformer 100 kVA, 11/0.415 kV 1

MTS-016 Accessories for auxiliary transformer 1 Lot

MTS-017 MV Power cables (630mmsq s/c and termination accessories) between Transformer and Switchgear 1 Lot

MTS-018 11 kV 3/C Cable (300mmsq and termination accessories) for feeder connections 1 Lot

MTS-019 Substation control system extension 1 Lot

MTS-020 Control and Measuring cables 1 Lot

MTS-021 Earthing System extension 1 Lot

MTS-022 Ancillary Equipment 1 Lot

MTS-023 Substation lighting and lightning protection systems 1 Lot

Works:

MTS-401 Transformer Foundation, oil collection and oil separation pit 1

MTS-402 Switchgear Building Extension and septic tank 1 Lot

MTS -403 Platform Works 1 Lot

MTS- 404 Cable trenches 180

MTS -405 Erection and commissioning 1 Lot

MTS -406 Transportation and positioning of transformer 1 lot

MTS -407 Assembly and Testing of transformer 1 Lot

MTS -408 Telecommunications / SCADA installation and commissioning

1 Lot

MTS -409 Automation Engineer for substation automation integration 1 Lot

MTS -410 Cable Termination works for 11kV feeders 1 Lot

MTS -411 Substation access road works 1 Lot

MTS -412 Substation gate, guard access, guard house modifications and fencing

1 Lot

MTS -413 Substation drainage 1 Lot

MTS -414 Substation earthing improvement 1 Lot

MTS -415 Substation lighting and lightning protection systems 1 Lot

MTS -416 Substation structures installation 1 Lot

4.2.8.2.2 Kabete 66/11kV Substation

The works involve construction of a new 66kV transformer bay; installation of 1No new

transformer 23 MVA, 66/11 kV; Installation of 2No additional 11kV Feeder panels and

associated control switchgear within the existing switchgear room.

The additional 11kV feeder panels will be provided by KPLC but the contractor will be

responsible for coupling them to the existing board. The equipment will be rearranged to fit the

spaces available.


Establish plinth for water tank at the backyard of the station. Place the existing water tank on

the plinth and provide water harvesting, piping and pumping facilities.

Housekeeping on the green area of the substation. Weed control and provision of walkways

to the installed facilities (water tank, communications tower and local transformer)

Adapt the new earthing works to the existing earth grid.



Connect the oil collection unit to the existing oil separation unit.

The existing local transformer connected to the 11kV switchboard is adequate. New transformer to be collected from Nairobi South or Ruaraka Store.

Second Transformer at Kabete Substation



KABT-001 23 MVA, 66/11 kV transformer 1

KABT-002 66 kV Circuit Breaker 2

KABT-004 66 kV Isolator 3

KABT-005 66 kV Current Transformer 6

KABT-006 66 kV Bus bar Material and Bay Material 1 Lot

KABT-007 Steel Structures for support 1 Lot

KABT-008 66kV Surge Arrestors with counters 3

KABT-009 66 kV Transformer Protection Control and RTTC Panel 1

KABT-010 66 kV Voltage Transformer 3

KABT-011 66 kV Line Protection and Control Panel 1

KABT-012 11 kV Neutral CT 1

KABT-013 Switch Board Panel for 11 kV Transformer Bay 1

KABT-014 Switch Board Panel for 11 kV Bus sectionaliser 1

KABT-015 Switch Board Panels for 11 kV Feeder 2

KABT-016 Adaptor panel for 11kV switchboard 1

KABT-017 11 kV Surge Arresters 3

KABT-018 MV Power cables (630mmsq s/c and termination accessories) between Transformer and Switchgear

1 Lot

KABT-019 Substation control system extension 1 Lot

KABT-020 Control and Measuring cables 1 Lot

KABT-021 Earthing System extension 1 Lot

KABT-022 Ancillary Equipment 1 Lot

KABT-023 Substation lighting and lightning protection systems 1 Lot

Works:

KABT- 401 Transformer Foundation, oil collection 1

KABT- 402 Switchgear Building improvements 1 Lot

KABT- 403 Platform Works 1 Lot

KABT- 404 Cable trenches 1 Lot

KABT– 405 Erection and commissioning 1 Lot

KABT– 406 Transportation and positioning of transformer 1 Lot

KABT- 407 Assembly and testing of transformer 1 Lot

KABT- 408 Telecommunications / SCADA installation and commissioning 1 Lot

KABT- 409 Automation Engineer for substation automation integration 1 Lot

KABT- 410 Substation drainage 1 Lot

KABT- 411 Substation earthing improvement 1 Lot

KABT- 412 Substation lighting and lightning protection systems 1 Lot

KABT- 413 Substation structures installation 1 Lot



4.2.8.2.3 Syokimau 66/11kV Substation

The works involve:

Construction of a new 66kV transformer bay;

Installation of 1No new transformer 23 MVA, 66/11 kV;

Installation of 5No additional 11kV Feeder panels and associated control switchgear within

the existing control room. The additional 11kV feeder panels will be provided by KPLC but

the contractor will be responsible for coupling them to the existing board. The equipment

will be rearranged to fit the spaces available.


Establish 2No new 66kV line bays and 1No new transformer bay.

The rear part of the substation area to be fenced off in chain-link on concrete poles and gated

Establish a toilet for the guard and connect to the existing septic tank; a separate access gate

for the guard and screen off the guard area with chain-link and incorporate a walkway.

Switchgear room improvements:

o Install a 10,000 liter water tank with plinth, rain water harvesting, water piping,

pumping and plumbing works and integrate with existing plumbing works

including any adjustments as may be necessary.

o Repair damage to control room ceilings caused by quarry blasts.

Replace gate with KPLC standard solid gate. Reuse the existing gate at the rear screen off

gate.

New transformer to be collected from Nairobi South or Ruaraka Store.

The protection of the substation and control building from quarry blasts will be carried out by a

specialized contractor. Provisional sum provided.

Second Transformer at Syokimau Substation



SYOK-001 66 kV Circuit Breaker 3

SYOK-002 66 kV Isolator 4

SYOK-003 66 kV Isolator with Earth Switch 2

SYOK-004 66 kV Current Transformer 9

SYOK-005 66 kV Voltage Transformer 3

SYOK-006 66 kV Bus bar Material and Bay Material 1 Lot

SYOK-007 Steel Structures for support 1 Lot

SYOK-008 66kV Surge Arrestors with counters 6

SYOK-009 66 kV Transformer Protection Control and RTTC Panel 1

SYOK-010 66 kV Line Protection Control Panel 2

SYOK-011 11 kV Neutral CT 1

SYOK-012 Switch Board Panel for 11 kV Transformer Bay 1

SYOK-013 Switch Board Panel for Bus Coupler 1

SYOK-014 Switch Board Panel for 11 kV Feeder 5

SYOK-015 Adaptor panel for 11kV switchgear 1

SYOK-016 11 kV Surge Arresters 3

SYOK-017 Auxiliary transformer 100 kVA, 11/0.415 kV 1

SYOK-018 11 kV Accessories for auxiliary transformer 1 Lot

SYOK-019 MV Power cables (630mmsq s/c and termination accessories) between Transformer and Switchgear 1 Lot

SYOK-020 Substation control system extension 1 Lot

SYOK-021 Control and Measuring cables 1 Lot



SYOK-022 Earthing System extension 1 Lot

SYOK-023 Ancillary Equipment 1 Lot

SYOK-024 Substation lighting and lightning protection systems 1 Lot

SYOK-025 23 MVA, 66/11 kV transformer 1

Works:

SYOK - 401 Transformer Foundation, oil collection and oil separation pit 1

SYOK - 402 Switchgear building rehabilitation 1 Lot

SYOK - 403 Platform Works 1 Lot

SYOK - 404 Cable trenches 1 Lot

SYOK - 405 Erection and commissioning 1 Lot

SYOK - 406 Guard house, access, toilet and screening improvements 1 Lot

SYOK - 407 Telecommunications / SCADA installation and commissioning 1 Lot

SYOK - 408 Substation automation integration 1 Lot

SYOK - 409 Transportation and positioning of transformer 1 Lot

SYOK - 410 Assembly and testing of transformer 1 Lot

SYOK - 411 Substation gate and fencing 1 Lot

SYOK - 412 Substation drainage 1 Lot

SYOK - 413 Substation earthing improvement 1 Lot

SYOK - 414 Substation lighting and lightning protection systems 1 Lot

SYOK - 415 Protection of the switchgear building roof and substation from quarry blasts by specialized contractor (Provisional Sum) 1 Lot

SYOK - 416 Substation structures installation 1 Lot



4.2.8.3 Lot KP1/6A-2/PT/1/15/A39B/2 – Gigiri, Cianda and Steel Billets 66/11kV Substations

4.2.8.3.1 Gigiri 66/11kV Substation

The works involve


Construction of 2No 66kV line bays

Installation of 1No new transformer 23 MVA, 66/11 kV complete with accessories

Installation of 7No additional 11kV Feeder panels and associated control switchgear. The

additional 11kV feeder panels will be provided by KPLC but the contractor will be

responsible for coupling them to the existing board. The equipment will be rearranged to

fit the spaces available.

Extension of the switchgear room to accommodate the additional equipment.


The ICRAF road shall be restored as found after completion of works.

The switchgear room is to be extended to the rear

Substation lighting to be in LED technology

The substation road is to be cut and ducts installed for control cables.

The bidder to connect water to the site and transfer to kplc upon completion of works

Construct guard toilet and provide a 1000 litre overhead water tank. Create a pedestrian

gate for guard entry and fence off the guard area with chain link with a walk way.

The new local transformer to be connected to the LV AC changeover board.

The existing 66kV line incomer to be made a complete 66kV line bay by introducing the

missing equipment.

Only the 11kV panel room is to be extended. The 66kV panel room is adequate for the

additional panels.

All the new equipment to be integrated to SCADA.

The new transformer to have a separate oil separation pit. New transformer to be collected from Nairobi South or Ruaraka Store.

Second Transformer at Syokimau Substation



GGR-001 66 kV Circuit Breaker 3

GGR-002 66 kV Isolator 4

GGR-003 66 kV Isolator with Earth Switch 2

GGR-004 66 kV Current Transformer 9

GGR-005 66 kV Voltage Transformer 6

GGR-006 66 kV Bus bar Material and Bay Material 1 Lot

GGR-007 Steel Structures for support 1 Lot

GGR-008 66kV Surge Arrestors with counters 6

GGR-009 66 kV Transformer Protection and control Panel with RTTC 1

GGR-010 66 kV Line Protection and control Panel 2

GGR-011 11 kV Neutral CT 1

GGR-012 Switch Board Panel for 11 kV Transformer Bay 1

GGR-013 Switch Board Panel for 11 kV Bus sectionaliser 1



GGR-014 Switch Board Panels for 11 kV Feeder 6

GGR-015 Adaptor panel for 11kV Switchboard panel 1

GGR-016 11 kV Surge Arresters 3

GGR-017 Auxiliary transformer 100 kVA, 11/0.415 kV 1

GGR-018 Accessories for auxiliary transformer 1 Lot

GGR-019 MV Power cables (630mmsq s/c with accessories) between Transformer and Switchgear 1 Lot

GGR-020 Substation control system extension 1 Lot

GGR-021 Control and Measuring cables 1 Lot

GGR-022 Earthing System 1 Lot

GGR-023 Ancillary Equipment 1 Lot

GGR-024 Substation lighting and lightning protection systems 1 Lot

GGR-025 23 MVA, 66/11 kV transformer 1

Works:

GGR-401 Transformer foundation, oil collection and oil separation pits 1

GGR-402 Switchgear Building modification 1 Lot

GGR-403 Platform Works 1 Lot

GGR- 404 Cable trenches and ducts 1 Lot

GGR-405 Erection and commissioning 1 Lot

GGR-406 Guard house toilet, pedestrian gate and screening 1 Lot

GGR-407 Telecommunications / SCADA installation and commissioning

1 Lot

GGR -408 Transportation and positioning of transformer 1 Lot

GGR -409 Transformer Assembly and Testing 1 Lot

GGR -410 Automation Engineer for substation automation integration 1 Lot

GGR -411 Substation drainage 1 Lot

GGR -412 Substation earthing improvement 1 Lot

GGR -413 Substation lighting and lightning protection systems 1 Lot

GGR -414 ICRAF road rehabilitation 1 Lot

GGR -415 Substation structures installation 1 Lot

4.2.8.3.2 Cianda 66/11kV Substation

The works involve

Reconstruction of the existing 66kV line bay

Construction of a new 66kV line bay


Installation of 1No new transformer 23 MVA, 66/11 kV complete with a control panel;

Recovery of the lighting masts and lightning arrestor masts on wooden poles and

replacement with new steel structure masts at the designed locations.


The communication system is PLC. Bidder to provide a SAS and integrate to SCADA. Fibre

optic cable is available at the station.

2No new 66kV feeder bays to be established due to the future planned works. The existing

66kV incomer bay to be made a complete line bay. Thus, the station is to have 3No line bays

and terminated on steel gantry structures.

Provide adequate oil separation unit to cater for the two transformers.

Earthing of the substation to the current KPLC standard earth grid system.



Construction of a new Control room building. The available area is 14 x 15 meters. The old

control room to be retired.

Installation of new 13 panel 11kV Switchgear. The existing SF6 panels to be retired. The

existing feeders to be terminated to the new panels.

Portion of the boundary wall on two sides of the property to be extended to 2.7 meters above

the substation ground level.

Provide a new solid panel gate and pedestrian gate. Modify the guard room to provide steel

door, windows and seating forms

Replace and reposition the substation lighting and lightning protection system with steel

structures.

Replace the tap changer control panel for automation.

Provide new auxiliary supplies in the new control room.

The existing battery and battery charges to be transferred as backup to the new control room.

Connect piped water to the site. Install the water tank in the existing platform and provide

piping and pumping facilities. The new water connection account to be transferred to KPLC

upon completion of works.

Refurbishment of the substation grounds. New transformer to be collected from Nairobi South or Ruaraka Store.

Second Transformer at Cianda Substation



CNDA-001 23 MVA, 66/11 kV transformer 1

CNDA-002 66 kV Circuit Breaker 4

CNDA-003 66 kV Isolator without earth switch 7

CNDA-004 66 kV Isolator with Earth Switch 3

CNDA-005 66 kV Current Transformer 12

CNDA-006 66 kV Voltage Transformer 12

CNDA-007 66 kV Bus bar Material and Bay Material 1 Lot

CNDA-008 Steel Structures for support 1 Lot

CNDA-009 66kV Surge Arrestors with counters 12

CNDA-010 66 kV Transformer Protection and control Panel with RTTC panel 1

CNDA-011 66 kV RTTC Panel 1

CNDA-012 66 kV Line Protection and Panel 2

CNDA-013 11 kV Neutral CT 1

CNDA-014 13 Panel 11kV Switch Board 1

CNDA-015 11 kV Surge Arresters 3

CNDA-016 Auxiliary transformer 100 kVA, 11/0.415 kV 1

CNDA-017 Accessories for auxiliary transformer 1 Lot

CNDA-018 MV Power cables (630mmsq s/c with accessories) between Transformer and Switchgear 1 Lot

CNDA-019 MV power cables (300mmsq 3/c) terminations and accessories between 11kv panels and overhead lines 1 Km

CNDA-020 Substation control system 1 Lot

CNDA-021 Control and Measuring cables 1 Lot

CNDA-022 Telecommunication system modification 1 Lot

CNDA-023 Earthing System extension 1 Lot

CNDA-024 Ancillary Equipment 1 Lot

CNDA-025 Substation Lighting and lightning protection system 1 Lot

CNDA-026 LV AC and DC supplies 1 Lot

CNDA-027 110V battery and battery charger 1



CNDA-028 48V battery and battery charger 1

Works:

CNDA -401 Transformer Foundation, oil collection and separation pits 1

CNDA -402 Switchgear Building 1 Lot

CNDA -403 Platform Works 1 Lot

CNDA-404 Cable trenches 1 Lot

CNDA-405 Erection and commissioning 1 Lot

CNDA-406 Guard house modifications 1 Lot

CNDA-407 Telecommunications / SCADA installation and commissioning 1 lot

CNDA-408 Transportation and Positioning of transformer 1 Lot

CNDA-409 Transformer assembly and testing 1 Lot

CNDA-410 Automation Engineer for substation automation integration 1 Lot

CNDA -411 Termination works for MV power cables 1 Lot

CNDA -412 Substation drainage 1 Lot

CNDA -413 Substation earthing improvement 1 Lot

CNDA -414 Substation lighting and lightning protection systems 1 Lot

CNDA -415 Substation structures installation 1 Lot

4.2.8.3.3 Steel Billets 66/11kV Substation

The scope of works includes replacement of a faulty 23 MVA, 66/11 kV Transformer and

associated switchgear; Installation of a new 13 Panel 11KV switchboard and other control

equipment; Laying and terminating 630mmsq S/C 11kV cables from the transformers to the

switchgear; Recovery of the faulty transformer and associated equipment to the stores; Laying

and termination of 8No 300mmsq 3/C cables from the switchgear to the overhead lines;

Restoration of local supplies.


Rearrangement of the 66kV bus bar to provide; 2No 66kV line bays, 1No 66kV bay for

capacitor banks and 2No 66kV transformer bays.

Provide auxiliary supplies in the new control room.

Provide Substation Automation System and SCADA integration

Replace the existing circuit breakers with standard voltage units. The existing units use 30V

supplies while the current standard uses 110V.

Modify the transformer platforms to provide for oil collection and establish an oil

separation unit adequate for the two transformers.

Re-do cable trenches to separate control and power cables

New transformer to be collected from Nairobi South or Ruaraka Store

Install about 2km of ADSS from Juja Control Centre to the site

Integrate the station to SCADA

Second Transformer at Steel Billets Substation



SBL-001 23 MVA, 66/11 kV transformer 1

SBL-002 66 kV Circuit Breaker 5

SBL-003 66 kV Isolator without earth switch 5



SBL-004 66 kV Isolator with Earth Switch 2

SBL-005 66 kV Current Transformer 15

SBL-006 66 kV Bus bar Material and Bay Material 1 Lot

SBL-007 Steel Structures for support 1 Lot

SBL-008 66kV Surge Arrestors with counters 15

SBL-009 66 kV Transformer Protection Panel with RTTC 2

SBL-010 66 kV Line Protection Panel 3

SBL-011 66 kV Voltage Transformer 6

SBL-012 11 kV Neutral CT 2

SBL-013 11 kV Surge Arresters 6

SBL-014 13 Panel 11kV Switch Board 1

SBL-015 11 kV 3/C Cable (300 mm2 and terminations) for feeder connections 1 Lot

SBL-016 11kV S/C power cables 630mmsq and terminations between Transformer and Switchgear 1 Lot

SBL-017 LV ac and dc auxiliary supply 1 Lot

SBL-018 Substation control system 1 Lot

SBL-019 Control and Measuring cables 1 Lot

SBL-020 Substation lighting and Lightning protection system 1 Lot

SBL-021 Substation earthing system 1 Lot

SBL-022 110V battery and battery charger 1

SBL-023 48V battery and battery charger 1

SBL-024 Telecommunication system 1 Lot

SBL-025 Substation control system 1 Lot

SBL-026 ADSS Cable and accessories 1 lot

Works:

SBL - 401 Transformer Foundation modifications, oil collection and separation pits 1 Lot

SBL - 402 Platform Works 1 Lot

SBL - 403 Cable trenches and refurbishment 1 Lot

SBL - 404 Erection and commissioning 1 Lot

SBL - 405 Recovery of Faulty Transformer and disused equipment and delivery to stores

1 Lot

SBL - 406 Laying and termination of new feeder cables 1 Lot

SBL - 407 Transformer transportation and Positioning 1 Lot

SBL - 408 Transformer assembly and testing 1 Lot

SBL - 409 Telecommunications / SCADA installation and commissioning 1 Lot

SBL - 410 Substation structures installation 1 Lot

SBL - 411 Substation drainage 1 Lot

SBL - 412 Substation earthing improvement 1 Lot

SBL - 413 Substation lighting and lightning protection systems 1 Lot

SBL - 414 Control room rehabilitation 1 Lot

SBL - 415 ADSS Cable installation 1 Lot



4.2.8.4 Lot KP1/6A-2/PT/1/15/A39C – Mangu 132/66kV and Kamburu 132/33kV Substations

4.2.8.4.1 Mangu 132/66kV Substation works

The substation scope of works shall include the following

Establish a 60MVA 132/66kV Transformer bay complete with associated switchgear and

protection.

Relocation, dis-assembly and assembly and Installation and commissioning of a 60MVA

132/66kV transformer and associated switchgear.

Extension of the 132kV and 66kV kV busbars.

Installation and commissioning of 4No 66kv feeder bays complete with the associated equipment

and protection.

Relocation of the guard house

Rerouting and reorganization of the existing 66/ 11kv network to ensure optimal use of the

substation.

Installation of a new 66kV incomer bay from the relocated transformer.

Design, supply installation and commission of new transformer panels and RTTC panel

SCADA extension and integration


Extensions of 132kV double Busbar over the switchgear room with a guard net.

Install a 200kVA local transformer to the existing transformers auxiliary windings via cable.

Test the new transformer before disassembly; disassemble the transformer; transport to the

new platform; assemble and test the transformer at the new bay. KPLC to provide the list of

tests to be carried out before disassembly.

Provide trenches for 66kV feeders along the length of the 66kV bays.

Rerouting the existing lines using underground cables to clear the area for the new works.

Provide 132kV transformer bay control panel, 66kV incomer panel and 4No 66kV line

control panels.

Terminate the new local transformer at the existing LVAC board.

Establish a cable trench for 5No 66kV feeders along the existing fence.

Construct a new guard house at the station entry. (same layout as the existing one)

Control room rehabilitation works

o Install a 10,000 litre tank with water harvesting, piping and pumping;

connect to existing system.

o Repair the leaks in the air conditioning system in the control room.

o Repair broken fixtures in existing guard house

Reposition the light masts being affected by the new works.

Provide a boundary fence for the new extension in chain link on concrete poles to match

existing

New transformer is already on site.

Item Item Description Unit Qty

Mangu 132/66kV substation expansion

MAN-001 132kV Busbar material and connections and guard net lot 1

MAN-002 66 kV Busbar Materials for 66KV connections for one lot 1



incomer bay and 4 outgoing bays

MAN-003 Steel Structures for support for 132kV and 66kV

structures. lot 1

MAN-004 132 kV Transformer Protection and control Panel. pc 1

MAN-005 132 kV transformer RTTC panel pc 1

66 kV incomer protection and Control Panel pc 1

MAN-006 66 kV Line protection, Control and metering Panel pc 4

MAN-007 66 kV Neutral Current Transformer pc 1

MAN-008 132 kV Surge Arresters pc 3

MAN-009 132kV current transformers pc 3

MAN-010 132kV motorized isolators pc 2

MAN-011 132kV circuit breakers pc 1

MAN-012 66kv circuit breakers Pc 5

MAN-013 Substation control Management system (SCMS) extension lot 1

MAN-014 66kv Isolators without earth switch no 10

MAN-015 Control and measuring cables lot 1

MAN-016 66kV motorized isolators with earth switch lot 4

MAN-017 Earthing system extension lot 1

MAN-018 Ancillary Equipment lot 1

MAN-019 Switchyard Lighting system extension lot 1

MAN-020 Lightning protection system lot 1

MAN-021 66kV current transformers no 12

MAN-022 66kv Capacitive voltage transformers no 9

MAN-023 66kV surge arrestors no 15

MAN-024 66kV line materials and fittings Lot 1

MAN-025 66kV 400mmsq S/C cable and accessories, termination

kits km 3

MAN-026 15m poles lot 1

MAN-027 66kV line surge arrestors no 18

MAN-028 300mmsq AA conductor km 1

MAN-029 200KVA Auxiliary transformer Pc 1

MAN-030 Connection accessories for 2No auxiliary transformers Lot 1

MAN-031 132kv Post Insulators Lot 1

Works

MAN-101 Transformer Foundation, oil collection and separation pits Lot 1

MAN-102 Transformer dismantling and reassembly Lot 1

MAN-103 Transformer relocation Lot 1

MAN-104 Platform Works Lot 1

MAN-105 Cable trenches and ducts Lot 1

MAN-106 Erection and commissioning Lot 1

MAN-107 New Guard house Lot 1

MAN-108 Substation Road and drainage works Lot 1



MAN-109 Earthing extension works Lot 1

MAN-110 66kv cable installation and termination works Lot 1

MAN-111 66kV and 11kV line reorganization and rerouting works Lot 1

MAN-112 Fencing and gates Lot 1

MAN-113 SCADA extension Lot 1

MAN-114 Control room and guard house rehabilitation Lot 1

MAN-115 Substation structures installation Lot 1

MAN-116 Substation lighting and lightning works Lot 1

4.2.8.4.2 Kamburu 132/33kV Substation works


Establish a 23MVA 132/33kV Transformer bay complete with associated switchgear and protection.

Transportation and installation of a 23MVA 132/33kV transformer

Lay 132kV XLPE cable to the transformer bay

Extension of the 33kV busbar and introduction of 3No additional 33kV feeder bays and a local

transformer.


The new transformer to be accessed using the same gate as the existing unit.

The 33kV Busbar to be reduced to the KPLC standard height using a bus section isolator.

The 3kv line bay surge diverter structures should be rigid enough to support outgoing 33kV

cables.

The 132kV cable shall be ordered for the minimum order level. The surplus shall be

delivered to KPLC stores

Provide adequate LED substation lighting with observance to 132kV line clearance.

Provide cable trench along the length of the 33kV bays for the Feedouts.

Substation earthing to be done to standard grid system.

Modifications to the switchgear room

o Replace the main double leaf door with a solid double door.

o Increase the number of ballustrades on the control room staircase.

Replace LVAC board with Auto changeover unit to accommodate two local supplies.

Provide 100kVA local transformer. New transformer to be collected from Nairobi South or Ruaraka Store.


Kamburu 2nd 23MVA 132/33kV Transformer

KBR-001 23 MVA 132/33kV Transformer Pc 1

KBR-002 132 kV SF6 Circuit Breaker Pc 1

KBR-003 132 kV motorized Isolator without earth switch Pc 2

KBR-004 132kV Current Transformer pc 3

KBR-005 132 kV XLPE cable Lot 1

KBR-006 132 kV Bus bar Material and Bay Material Lot 1

KBR-007 132 kV Steel Structures for support Lot 1

132 kV Surge Arrestors Pc 6

KBR-008 132kV Post Insulators Pc 4

KBR-009 132 kV Transformer Protection Panel with RTTC panel and Pc 1




metering panel

KBR-010 132kV Metering panel Pc 1

KBR-011 33 kV Neutral CT Pc 1

KBR-012 33kV Circuit breakers Pc 4

KBR-013 33kv isolator without earth switch Pc 6

KBR-014 33kv isolator with earth switch Pc 3

KBR-015 33kv single phase Voltage transformers Pc 6

KBR-016 33kV current transformers Pc 12

KBR-017 33kV Surge Arrestors with counters Pc 12

KBR-018 33kv transformer bay protection and control panels Pc 1

KBR-019 33kV Line protection, control and metering panel Pc 4

KBR-020 33 kV Bus bar Material and Bay Material Lot 1

KBR-021 33 kV Steel Structures for support Lot 1

KBR-022 33kV Auxiliary transformer 100 kVA, 33/0.415 kV Pc 1

KBR-023 accessories for auxiliary transformer Lot 1

KBR-024 Substation control Management system (SCMS) extension Lot 1

KBR-025 Control and Measuring cables Lot 1

KBR-026 Substation Earthing System Lot 1

KBR-027 Ancillary Equipment Lot 1

KBR-028 Substation lighting and lightning protection systems Lot 1

Works

KBR - 401 Transformer Foundation, oil collection and separation pits Lot 1

KBR– 402 Transportation and positioning of Power Transformer Lot 1

KBR– 403 Assembly and testing of Power Transformer Lot 1

KBR– 404 Platform works Lot 1

KBR– 405 Cable trenches and ducts Lot 1

KBR-406 Erection and commissioning Lot 1

KBR-407 33kV Busbar extension Lot 1

KBR-408 SCADA installation and commissioning Lot 1

KBR-409 Substation Drainage works Lot 1

KBR-410 Boundary fence extension Lot 1

KBR-411 132kV cable installation Lot 1

KBR-412 Control room refurbishment Lot 1

KBR-413 Earthing extension Lot 1

KBR-414 Substation lighting and lightning works Lot 1

KBR-415 Substation structures installation Lot 1



4.2.8.5 Lot KP1/6A-2/PT/1/15/A39D – Naivasha and Makutano 132/33kV Substations

4.2.8.5.1 Naivasha 132/33kV Substation works


Establish a 23MVA 132/33kV Transformer bay complete with associated switchgear and

protection.

Replacement of the 33kV busbar on wooden poles with steel structures and copper tubes and

repositioning of 33/.42kV Local transformer

Rehabilitation of cable trenches across the substation.

Installation of Indoor 33kV feeder control panels.

Transportation of faulty transformers to stores.

Rehabilitation of 33kv substation control room


Recovery of 3No faulty transformer units to Ruaraka stores.

Erect a firewall between TX2 and the new transformer.

Create new substation road to cabro finish to the new transformer plinth with a gate.

Reconstruct the 33kV Busbar to steel structures with tubes.

Include VTs on the 33kV incomers for transformer regulation and sync

Establish a 33kV steel gantry for feeder terminations.

Rehabilitate the substation earthing.

Rehabilitate the existing cable trenches and provide new cable trenches to all the 33kV bays.

Rehabilitate the boundary fence to match the new.

Rehabilitate the existing substation road to cabro finish; extend the drainage trenches and provide a

gate at the end of the road.

Replace the existing gates with standard open grill gates (132kV yard gate; Control room gate and

132/33kV yard main gate).

Reconstruct the guard house complete with a toilet, seating area, windows and doors. Provide a

walkway to the control room.

Construct/install a new septic tank

Modifications to the switchgear room o Rehabilitate the old switchgear room to accommodate the 33kV panels;

o install gypsum ceiling;

o change the wooden brandering to steel

o replace wooden doors with steel;

o install extractor fans for the battery room;

o extend the old Control Room Building to the new switchgear room to provide space for an

office, toilet and kitchenette;

o provide a panic door in the panel room;

o Install air conditioning system.

o Change the main door for the new switchgear room to a solid door.

Provide 10,000 liter water tank with rain water harvesting, piping and pumping.

Provide additional 200kVA local transformer.

Provide a modern LVAC distribution board with auto changeover unit.

Recover obsolete panels to Ruaraka stores.

Provide adequate substation lighting with LED technology.

New transformer to be collected from Nairobi South or Ruaraka Store.




Naivasha 3rd

23MVA 132/33kV Transformer

NVS-001 23 MVA 132/33kV Transformer Pc 1

NVS-002 132 kV SF6 Circuit Breaker Pc 1

NVS-003 132 kV motorized Isolator without earth switch Pc 1

NVS-004 132kV Current Transformer pc 3

NVS-005 132kV Post Insulators Pc 3

NVS-006 132 kV Bus bar Material and Bay Material Lot 1

NVS-007 132 kV Steel Structures for support Lot 1

NVS-008 132 kV Surge Arrestors Pc 3

NVS-009 132 kV Transformer Protection and control Panel with RTTC Pc 1

NVS-010 132 kV Transformer RTTC panel Pc 2

NVS-011 33 kV Neutral CT Pc 3

NVS-012 33kV Circuit breakers Pc 8

NVS-013 33kv motorized isolator without earth switch Pc 10

NVS-014 33kV motorized isolator with earth switch Pc 8

NVS-015 33kv Voltage transformers Pc 6

NVS-016 33kV current transformers Pc 24

NVS-017 33kV Line control and metering panel Pc 8

NVS-018 33kv Transformer bay protection and control panels Pc 3

NVS-019 33 kV Bus bar Material and Bay Material Lot 1

NVS-020 33 kV Steel Structures for support Lot 1

NVS-021 Substation Control Management system extension Lot 1

NVS-022 Control and Measuring cables Lot 1

NVS-023 Substation Earthing System Lot 1

NVS-024 Ancillary Equipment Lot 1

NVS-025 Substation lighting and lightning protection systems Lot 1

NVS-026 LV AC and DC supplies Lot 1

NVS-027 Auxiliary transformer 200KVA 33/.415kV Pc 1

NVS-028 Accessories for auxiliary transformer Lot 1

Works

NVS-401 Transformer Foundation, firewall, oil collection and separation pits

Lot

1

NVS-402 Transportation and Positioning of transformer Lot 1

NVS-403 Assembly and testing of transformer Lot 1

NVS-404 Platform works Lot 1

NVS-405 Cable trenches Lot 1

NVS-406 Erection and commissioning Lot 1

NVS-407 33kV Busbar reconstruction to steel structures and repositioning of existing local transformer

Lot

1

NVS-408 Telecommunications / SCADA installation and commissioning

Lot

1

NVS-409 Substation earthing extension Lot 1

NVS-410 Recovery and transportation of 3No faulty transformers to stores

Lot

1

NVS-411 Rehabilitation and reconstruction of switchgear room Lot 1

NVS-412 Extension of 132kV Busbar Lot 1

NVS-413 Substation drainage works Lot 1

NVS-414 Substation Road works Lot 1




NVS-415 Guard house, septic tank, gates and fencing works Lot 1

NVS-416 Substation lighting and lightning works Lot 1

NVS-416 Substation structures installation Lot 1

4.2.8.5.2 Makutano 132/33kV Substation works


Establish a 23MVA 132/33kV Transformer bay complete with associated switchgear and protection.

Transportation, installation, assembly and testing of a 23MVA 132/33kV transformer and associated

switchgear.

Extension of the 33kV Busbar to provide for additional lines and incomer bays

Establishment of 3No 33kV Feeder bays complete with control and protection panels.


Install a 132kV isolator to separate the 132kV Busbar and install a set of VTs

Install a 33kV bus section isolator.

Establish 3No 33kV transformer bays.

Provide lightning protection to cover the transformers and 33kV bays.

Provide an oil separation unit for the new transformer.

Install adequate substation lighting using LED technology.

Modify the LVAC board to auto changeover unit for two supplies.

Modifications to the switchgear room

o Block the vents over the main door and seal the entrance door.

o Relocate the panic door furniture to the panel room from the control room

o Install new lock to the operator access door.

o Revive the local wiring in the control room

o Install a 10,000 liter water tank complete with rain water harvesting, piping and

plumbing.

o Automate the water pumping system.


Makutano 2nd 23MVA 132/33kV Transformer

MKTN-001 23 MVA 132/33kV Transformer Pc 1

MKTN-002 132 kV SF6 Circuit Breaker Pc 1

MKTN-003 132 kV motorized Isolator without earth switch Pc 2

MKTN-004 132kV Current Transformer pc 3

MKTN-005 132 kV Capacitive Voltage Transformer Pc 3

MKTN-006 132 kV Bus bar Material and Bay Material Lot 1

MKTN-007 132 kV Steel Structures for support Lot 1

MKTN-008 132 kV Surge Arrestors Pc 3

MKTN-009 132kV Post Insulators Pc 9

MKTN-010 132 kV Transformer Protection Panel with RTTC Pc 1

MKTN-011 33kV 100kVA 33/.433kV transformer Pc 1

MKTN-012 Accessories for local transformer Lot 1

MKTN-013 LVAC Board modification Lot 1

MKTN-014 33 kV Neutral CT Pc 1



Item Item Description Unit Qty MKTN-015 33kV Circuit breakers Pc 4

MKTN-017

33kv isolator without earth switch Pc 5

MKTN-018 33kv isolator with earth switch Pc 3

MKTN-019 33kv Voltage transformers Pc 3

MKTN-020 33kV current transformers Pc 12

MKTN-021 33kV Surge Arrestors with counters Pc 12

MKTN-022 33kv line protection and metering panels Pc 3

MKTN-023 33kv transformer bay protection and metering panels Pc 1

MKTN-024 33 kV Bus bar Material and Bay Material Lot 1

MKTN-025 33 kV Steel Structures for support Lot 1

MKTN-026 Substation control Management system (SCMS) extension Lot 1

MKTN-027 Control and Measuring cables Lot 1

MKTN-028 Substation Earthing System Lot 1

MKTN-029 Ancillary Equipment Lot 1

MKTN-030 Substation lighting and lightning protection systems Lot 1

Works

MKTN-401 Transformer Foundation, oil collection and separation pits Lot 1

MKTN-402 Platform works Lot 1

MKTN-403 Cable trenches Lot 1

MKTN-404 Erection and commissioning Lot 1

MKTN-405 33kV Busbar extension Lot 1

MKTN-406 Telecommunications / SCADA installation and commissioning Lot 1

MKTN-407 Transportation and Positioning of transformer Lot 1

MKTN-408 Assembly and testing of transformer Lot 1

MKTN-409 Installation of indoor 33kV feeder metering and control panels Lot 1

MKTN-410 Extension of 132kV Busbar Lot 1

MKTN-411 Rehabilitation of switchgear room Lot 1

MKTN-412 Substation drainage works Lot 1

MKTN-413 Substation Road works Lot 1

MKTN-414 Substation lighting and lightning works Lot 1

MKTN-415 Substation structures installation Lot 1