nrs information brochure – march 2006 - ameu sabs/nrs... · web viewrelevant nrs specifications...

Delivering standards for the ESI since 1989

Electricity Suppliers Liaison Committee

Industry Standards Information Brochure

September 2009

INDUSTRY STANDARDS INFORMATION BROCHURE

Contents Page

1. INTRODUCTION..........................................................................................3

2. INDUSTRY STANDARDS............................................................................4

3. ACCESSING THESE INDUSTRY STANDARDS.....................................5

4. ESLC STRATEGIC INTERVENTIONS....................................................5

5. INDUSTRY STANDARDS LIST..................................................................8

6. NRS DOCUMENTS – VOLUNTARY.........................................................9

7. Withdrawn NRS documents........................................................................18

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1. Introduction

1.1 What is standardisation?

In many respects standardisation is taken for granted in much of our daily lives and business activities, without much appreciation of the effort that goes into ensuring that the standards are developed and agreed upon by the relevant stakeholders. For example, we can purchase any make and model of mobile-phone, without a thought as to whether it will interface with the existing networks: standards were established among the suppliers and network providers to ensure compatibility and interoperability. Similarly, standards resulting from cooperation among suppliers of IT equipment ensure that printers from different manufacturers can interface with computers from other suppliers.

It is easy for the uninformed to assume such standardisation occurs with automatic agreement and with little effort – the converse is usually the case, as many of us who have been involved in standardisation initiatives have experienced. Debate among experts with differing opinions in standardisation working groups can rival anything that parliament can offer. It is usually only in the absence of standardisation that questions get asked as to why there is a problem. A common example; just try to use your “standard” 16A mains plug anywhere else in the world.

In concept, standardisation simply refers to establishing and applying a set of agreed solutions intended for repeated application, directed at benefits for stakeholders and balancing their diverse interests.

The purpose of standardization is to formulate standards, for common and repeated use, thereby providing rules, guidelines, and/or characteristics for a product, process or service. The consensus among stakeholders promotes understanding, interoperability and compatibility, and further contributes towards rationalization and raising the level of quality of products and services.

1.2 How is standardisation used in the electricity supply industry?

In the electricity supply industry in general, standardisation of technology is one of the tools used to optimize the application of proven technologies and to implement innovation. To a large extent the work is underpinned by the vast body of standardisation that has been taking place internationally since the formation of the International Electrotechnical Commission (IEC) in 1906.

Eskom supports the industry through the project management for the development of industry standards, known as the NRS specifications, using consensus-based procedures. Similar processes are used in Eskom, in particular in the development of its standards for distribution. The practices are based on the best practices developed over many years by such organisation as the IEC. This is developed under an industry steering committee, the Electricity Suppliers’ Liaison Committee (ESLC).

A standard is an answer to a recognized need or problem that has arisen. If there were no need, or problem, then there would be no reason for having a standard. A common misconception is that standards bodies themselves have the resources to develop standards. This is both untrue and undesirable. The industry that requires a particular standard needs to supply the technical expertise for a standard to be successfully developed.

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This applies at every level; in a company, an association, nationally, regionally and internationally. The benefits of standardisation however generally only accrue in the longer term, so there is a need for management to be sensitized to what level of support for standardisation activities is needed, so that the right resources can be identified and committed, and then remain committed.

1.3 What are the benefits of standardisation?

Some of the potential benefits of standardisation are:

- Economies of scale through rationalization of equipment and materials, leading to, for example, reduced training costs and spares holdings.

- Interchangeability and interoperability of equipment from different suppliers.- Cost reduction by not repeating professional design and specification work.- Operational improvements, improved quality and reliability such as reduced cost of maintenance. - Improved safety and health.- Capturing and leveraging innovation and intellectual capital (knowledge and intellectual property).- Enabling cost-effective compliance as standards may be directly referenced in regulation, and

tender documents may also insist on compliance with a standard. Compliance with standards enables manufacturers to demonstrate the suitability of their own technology, providing them with greater flexibility.

- Encouraging industry best practice.- Confirming customer assurance and thereby reducing product liability.

However the above potential benefits will not be felt unless the standards are implemented. Here again management commitment is needed, in particular to appropriate purchasing practices and change management procedures.

2. Industry standards

The ESLC agreed to produce this brochure that comprises lists of the titles of NRS documents and their applicability. Distributors are encouraged to make use of these industry standards to promote standardization.

NOTE: In terms of the Standards Act, such “standards” are not National Standards, and are referred to by the SABS as “Industry Technical Agreements” in the case of NRS documents.

NRS specifications, covering a range of electro-technical topics as well as guidelines for sound business practice/s, are developed for use in the Electricity Supply Industry (ESI) in South Africa. The NRS Project Management Agency (PMA), which is staffed by Eskom, manages the development of the specifications on behalf of the Electricity Suppliers Liaison Committee (ESLC).

The NRS specifications are developed using accepted consensus-building practices, in collaboration with the Standards Division of the South African Bureau of Standards (SABS), The process includes consultation with other relevant stakeholders; in particular , where relevant, suppliers and manufacturers. A working group (WG) is convened with members nominated by the by the ESLC to carry out the standardization work The WG should comprise a group of specialists (and application engineers) who are knowledgeable in the subject under consideration and who pool this knowledge to produce a specification/code of practice. The WG may decide to include other stakeholders in an interest group. (See Figure 1).

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http://nrs.eskom.co.za/about_us.htm#ESLC%20MEMBERS

http://nrs.eskom.co.za/about_us.htm#CONTACT%20DETAILS


Figure 1: Operational structure

The ESLC comprises members from Eskom Distribution, Transmission and Corporate as well as from the Metropolitan Municipalities and the AMEU. SABS also has full membership of the ESLC. NERSA, EDI Holdings and the Power Institute for East and Southern Africa (PIESA) are observer members of the ESLC.

3. Accessing these Industry standards

3.1 NRS specifications

NRS specifications are copyright-protected, and copyright has been ceded to the SABS for their publication and sale to the open market.

Engineer members of the AMEU may download NRS documents free of charge from the website for use within their organization. To register and obtain a login and password to allow you access, please contact the ESLC Secretariat, Alvin Fredericks on [email protected].

All other parties may purchase NRS documents from the SABS (Standards Sales). The contact number is (012) 428 6834

4. ESLC Strategic Interventions

4.1 Supporting the objectives of NERSA

The National Energy Regulator of South Africa (NERSA) observes the activities of the ESLC and participates in numerous NRS working groups. Several NRS specifications have been developed at the request of the Regulator. Relevant NRS specifications are referenced by the NERSA Grid Code or included as licence conditions.

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OPERATIONAL STRUCTURE

ESLC

NRS PMA

Working Group 2

Working Group 1

Working Group 3

Interest Group

Interest Group

Interest Group

mailto:[email protected]


4.2 Repository of Industry Standards

Recognizing that common standards are essential for the successful restructuring of the EDI, in 2004, the ESLC invited EDI Holdings Company to nominate a representative onto the ESLC. In collaboration with the EDI Holdings Wires Committee, the ESLC undertook a project to collect organization level standards from municipalities and Eskom. These standards are available on the ESLC repository of industry standards on the NRS website (www.nrs.eskom.co.za). Where a need is identified these standards have been rationalized into NRS specifications.

4.3 SANS/NRS dual numbering

Traditionally when certain NRS specifications were adopted by SABS Standards Division as national standards, the original NRS specifications were withdrawn. This led to a situation where the NRS Working Groups that had developed the original specifications had no access to the documents and little influence over the maintenance of the standards. Furthermore, Eskom and municipalities had to purchase these standards from SABS Standards division. Also, users of the original NRS specifications had to update their documentation to reflect the new SANS standard as the NRS specification no longer existed.

To overcome these difficulties a Memorandum of Agreement was signed between the ESLC and SABS Standards Division where a dual numbering SANS/NRS system was defined. Under this memorandum, NRS specifications adopted by SABS Standards division as National Standards would be dual numbered and both NRS and SABS Standards Division’s working groups were jointly responsible for the development and/or maintenance of the document. These dual-numbered specifications would essentially supersede the previous NRS document.

4.4 Non-compliance with NRS specifications

Several cases of non-compliance with NRS specifications have been brought to the attention of the ESLC. In such cases, although the purchaser specified compliance to an NRS specification, the supplier did not adhere to the requirements detailed in the specification. In addition to the implications of breach of contract for the specific user, there could be wider implications, such as the continued sale of non-conforming items to other purchasers. Consequently, a process, approved by the ESLC, has been developed to address such issues. Eskom and municipalities are encouraged to notify the ESLC of all known non-compliances so that the necessary remedial action/s can be taken.

4.5 Collaboration with TESCOD

TESCOD is the Technology and Standardization Steering Committee of Eskom Distribution. In most cases TESCOD standards are used as a basis for developing NRS specifications. The ESLC has identified opportunities for further collaboration with TESCOD which will prevent duplication of effort and optimise the use of resources. TESCOD invites municipalities to participate on their study committees. The following study committees are active under TESCOD.

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TESCOD STUDY COMMITTEESData StandardsDC systemsDemand Side ManagementLand DevelopmentMaintenance ManagementMeasurements & PrepaymentMV LVNetwork OptimisationNetwork Performance and QOSNetwork PlanningOverhead LinesProtectionSubstationsTelecommunicationTelecontrolUnderground Dx Systems

4.6 Continuing Professional Development (CPD)Based on the ECSA’s rules governing the CPD process, individuals will get credit for active participation in NRS working groups. The ESLC sent out a communiqué to inform NRS participants of this. The NRS PMA will keep appropriate records of participation.

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5. Industry Standards List

NRS Documents – Mandatory

Reference Description

NRS 041– SANS 10280

ELECTRICITY TRANSMISSION AND DISTRIBUTION – CODE OF PRACTICE FOR OVERHEAD POWER LINES FOR CONDITIONS PREVAILING IN SOUTH AFRICA

Note: NRS 041 was adopted by SABS Standards Division as SANS 0280 and the NRS specification was withdrawn. SANS 10280 is currently under review and will be published as a dual numbered SANS-NRS standard.

NRS 047-1 QUALITY OF SERVICE – PART 1: MINIMUM STANDARDS

NRS 047-2 QUALITY OF SERVICE – PART 2: REPORTING GUIDELINES

NRS 048-2 QUALITY OF SUPPLY – PART 2: VOLTAGE CHARACTERISTICS, COMPATIBILITY LEVELS, LIMITS AND ASSESSMENT METHODS

NRS 057CODE OF PRACTICE FOR ELECTRICITY METERINGadopted as SANS 474

NRS 082 RECOMMENDED MAINTENANCE POLICY FOR ELECTRICITY NETWORKS

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6. NRS Documents – Voluntary


NRS 000-1 NRS DEFINITIONS. PART 1: COMPILATION OF NRS AND OTHER DEFINITIONS USED IN THE ELECTRICITY SUPPLY INDUSTRY

NRS 000-2 NRS DEFINITIONSPART 2: ELECTRICITY PRICING

NRS 000-3 NRS DEFINITIONS. PART 3: HIGH-VOLTAGE OPERATING REGULATIONS THIS PART OF NRS 000 WAS PREVIOUSLY PUBLISHED AS NRS 040-1

NRS 000-4 NRS DEFINITIONS PART 4: ELECTRICITY DISTRIBUTION — GUIDELINES FOR THE PROVISION OF ELECTRICAL DISTRIBUTION NETWORKS IN RESIDENTIAL AREAS. THIS PART OF NRS 000 WAS PREVIOUSLY PUBLISHED AS NRS 034-0

NRS 001 GUIDELINE FOR DRAFTING AND PRESENTATION OF TECHNICAL STANDARDS

NRS 002 GRAPHICAL SYMBOLS FOR ELECTRICAL DIAGRAMSNote: (Symbols are available in .dgn and .dxf format).

NRS 003 AC METAL-ENCLOSED SWITCHGEAR AND CONTROLGEAR FOR RATED VOLTAGES ABOVE 1 KV AND UP TO AND INCLUDING 36 KV

Note: NRS 003 was adopted by SABS Standards Division as SANS 1885 and the NRS specification was withdrawn

NRS 003-2 METAL CLAD SWITCHGEAR - FOR RATED A.C VOLTAGE ABOVE 1 kV AND UP TO AND INCLUDING 24 kV - PART 2: STANDARDIZED PANELS

NRS 004 MINI-SUBSTATIONS FOR RATED A.C. VOLTAGES UP TO AND INCLUDING 24 kV

Note: NRS 004 was adopted by SABS Standards Division as SANS 1029 and the NRS specification was withdrawn. SANS 1029 is currently under review and will be published as a dual numbered SANS/NRS standard.

NRS 006SWITCHGEAR - METAL-ENCLOSED RING MAIN UNITS - FOR RATED A.C. VOLTAGES ABOVE 1 kV AND UP TO AND INCLUDING 24 kV – adopted as SANS 1874

Note: NRS 006 was adopted by STANSA as SANS 1874 and the NRS specification was withdrawn. SANS 1874 is currently under review and will be published as a dual numbered SANS/NRS standard.

EBSST Addendum

INTERIM AMENDMENTS TO NRS 009-2-1; NRS 009-2-2; NRS 009-3 AND NRS 009-6-3

NRS 009-2 ELECTRICITY SALES SYSTEMS - PART 2: FUNCTIONAL AND PERFORMANCE REQUIREMENTS

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Note – NRS 009-2 comprises several sections which are now obsolete. More information can be obtained from the NRS website www.nrs.eskom.co.za. The NRS 009 series is in the process of being dual-numbered with the SANS 1524 series.

NRS 009-3 ELECTRICAL SALES SYSTEMS - PART 3: DATABASE FORMAT (Obsolete)

NRS 009-4 ELECTRICITY SALES SYSTEMS - PART 4: NATIONAL PREPAYMENT ELECTRICITY METER CARDS – to be adopted as SANS 009-4

NRS 009-5 ELECTRICITY SALES SYSTEMS - PART 5: TESTING OF SUBSYSTEMS (Obsolete)

NRS 009-6 ELECTRICITY SALES SYSTEMS - PART 6: INTERFACE STANDARDS

EBSST Addendum

INTERIM AMENDMENTS TO NRS 009-2-1; NRS 009-2-2; NRS 009-3 AND NRS 009-6-3

Note: NRS 009-6 comprises several sections, including the standard transfer specification (STS), since adopted by the IEC. NRS 009-6-1; NRS 009-6-3 and NRS 009-6-4 are obsolete.

NRS 009-6-10 ELECTRICITY SALES SYSTEMS – PART 6: INTERFACE STANDARD - SECTION 10: ONLINE VENDING SERVER - VENDING CLIENT/S

NRS 009-7ELECTRICITY SALES SYSTEMS - PART 7: STANDARD TRANSFER SPECIFICATION / THE MANAGEMENT OF CRYPTOGRAPHIC KEYS - to be adopted as SANS 009-7

NRS 009-8 ELECTRICITY SALES SYSTEMS - PART 4: THE MANAGEMENT OF SECURE MODULES - to be adopted as SANS 009-8

NRS 009-9ELECTRICITY SALES SYSTEMS – PART 9: CODE OF PRACTICE FOR IMPLEMENTING ELECTRICITY VENDING SYSTEMS (DUE FOR PUBLICATION)

NRS 011 PILOT CABLES

NRS 012CABLE TERMINATIONS AND LIVE CONDUCTORS WITHIN AIR-INSULATED ENCLOSURES (INSULATION CO-ORDINATION) FOR RATED A.C. VOLTAGES OF 7.2 kV AND UP TO AND INCLUDING 36 kV. adopted as SANS 876

NRS 013 MEDIUM -VOLTAGE CABLES

NRS 018-1FITTINGS AND CONNECTORS FOR LOW- VOLTAGE OVERHEAD POWER LINES USING AERIAL BUNDLED CONDUCTORS - PART 1: STRAIN AND SUSPENSION FITTINGS FOR SELF-SUPPORTING CONDUCTORS

NRS 018-2FITTINGS AND CONNECTORS FOR LOW-VOLTAGE OVERHEAD POWER LINES USING AERIAL BUNDLED CONDUCTORS - PART 2: STRAIN AND SUSPENSION FITTINGS FOR INSULATED NEUTRAL SUPPORTING CONDUCTORS

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NRS 018-3FITTINGS AND CONNECTORS FOR LOW-VOLTAGE OVERHEAD POWER LINES USING AERIAL BUNDLED CONDUCTORS - PART 3: STRAIN AND SUSPENSION FITTINGS FOR BARE NEUTRAL SUPPORTING CONDUCTORS

NRS 018-4FITTINGS AND CONNECTORS FOR LOW-VOLTAGE OVERHEAD POWER LINES USING AERIAL BUNDLED CONDUCTORS - PART 4: STRAIN AND SUSPENSION FITTINGS FOR AERIAL SERVICE CABLES

NRS 018-5FITTINGS AND CONNECTORS FOR LOW-VOLTAGE OVERHEAD POWER LINES USING AERIAL BUNDLED CONDUCTORS - PART 5: CURRENT-CARRYING CONNECTORS AND JOINTS

NRS 020 ELECTRICITY DISTRIBUTION - CABLE TIES FOR USE WITH LOW VOLTAGE AERIAL BUNDLED CONDUCTORS

NRS 022 ELECTRICITY DISTRIBUTION - STAYS AND ASSOCIATED COMPONENTS

NRS 028 CABLE LUGS AND FERRULES - FOR COPPER AND ALUMINIUM CONDUCTORS

NRS 029 CURRENT TRANSFORMERS FOR RATED A.C. VOLTAGES FROM 3,6 kV UP TO AND INCLUDING 420 kV (MAXIMUM VOLTAGE FOR EQUIPMENT)

NRS 030ELECTRICITY DISTRIBUTION - INDUCTIVE VOLTAGE TRANSFORMERS FOR RATED A.C. VOLTAGES FROM 3.6 kV UP TO AND INCLUDING ELECTRICITY DISTRIBUTION 145 kV FOR INDOOR AND OUTDOOR APPLICATION

NRS 031 ALTERNATING CURRENT DISCONNECTORS AND EARTHING SWITCHES (ABOVE 1000 V)

NRS 032SERVICE DISTRIBUTION BOXES - POLE-MOUNTED TYPES - FOR OVERHEAD SINGLE-PHASE A.C. SERVICE CONNECTIONS AT 230 V

NRS 033ELECTRICITY DISTRIBUTION - GUIDELINES FOR THE APPLICATION DESIGN, PLANNING AND CONSTRUCTION OF MEDIUM VOLTAGE OVERHEAD POWER LINES UP TO AND INCLUDING 22 kV, USING WOODEN POLE STRUCTURES AND BARE CONDUCTORS

Note: The overhead lines construction information in NRS 033 will be removed and published in NRS 093. NRS 033 will be reviewed and will serve as an application guideline for SANS 10280 for applications up to and including 132 kV. SANS 10280 will be incorporated into the Electrical Machinery Regulations and will be published as a dual numbered “NRS 041- SANS 10280” specification.

NRS 034-1ELECTRICITY DISTRIBUTION - GUIDELINES FOR THE PROVISION OF ELECTRICAL DISTRIBUTION NETWORKS IN RESIDENTIAL AREAS - PART 1: PLANNING AND DESIGN OF DISTRIBUTION SYSTEMS NRS 034-1 dual numbered as SANS 507

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NRS 034-2-3ELECTRICITY DISTRIBUTION - GUIDELINES FOR THE PROVISION OF ELECTRICAL DISTRIBUTION NETWORKS IN RESIDENTIAL AREAS - PART 2-3: PREFERRED METHODS AND MATERIALS FOR THE INSTALLATION OF OVERHEAD POWER LINES

NRS 034-3

ELECTRICITY DISTRIBUTION - GUIDELINES FOR THE PROVISION OF ELECTRICAL DISTRIBUTION NETWORKS IN RESIDENTIAL AREAS - PART 3: OVERHEAD DISTRIBUTION IN VERY LOW, LOW AND MODERATE CONSUMPTION AREAS, INCLUDING RURAL AREAS AND INFORMAL SETTLEMENTS

NRS 035-1OUTDOOR DISTRIBUTION CUT-OUTS - PART 1: DROP-OUT FUSE-LINK ASSEMBLIES OR SOLID-LINK ASSEMBLIES - POLE-MOUNTED TYPES - FOR NOMINAL A.C. VOLTAGES UP TO AND INCLUDING 33 kV

NRS 035-2 OUTDOOR DISTRIBUTION CUT-OUTS - PART 2: EXPULSION FUSE-LINKS - FOR NOMINAL A.C. VOLTAGES UP TO AND INCLUDING 33 kV

NRS 036-1

AUTO-RECLOSERS AND SECTIONALIZERS - POLE-MOUNTED TYPES - PART 1: AUTO-RECLOSERS WITH LOCAL AND REMOTE CONTROL CAPABILITIES FOR NOMINAL A.C. VOLTAGES UP TO 33 kV

NRS 036-2AUTO-RECLOSERS AND SECTIONALIZERS - POLE-MOUNTED TYPES - PART 2: AUTO-RECLOSERS THAT HAVE PROGRAMMABLE PROTECTION FEATURES AND ONLY LOCAL CONTROL - FOR NOMINAL A.C. VOLTAGES UP TO 22 kV

NRS 036-3 AUTO-RECLOSERS AND SECTIONALIZERS - POLE-MOUNTED TYPES - PART 3: SECTIONALIZERS FOR NOMINAL A.C. VOLTAGES UP TO 22 kV

NRS 037-1 TELECONTROL PROTOCOL - PART 1: TELECONTROL PROTOCOL FOR STAND-ALONE REMOTE TERMINAL UNITS

NRS 037-3 TELECONTROL PROTOCOL - PART 3: INTER-CONTROL CENTRE COMMUNICATION PROTOCOL.

NRS 038-1ELECTRICITY DISTRIBUTION - CONCRETE POLES - PART 1: CONCRETE POLES FOR LOW-VOLTAGE AND MEDIUM-VOLTAGE OVERHEAD DISTRIBUTION SYSTEMS

NRS 038-2 ELECTRICITY POLES - CONCRETE POLES - PART 2: CONCRETE POLES FOR LIGHTING APPLICATION

NRS 039-1SURGE ARRESTERS FOR USE IN DISTRIBUTION SYSTEMS – PART 1: GUIDE FOR THE APPLICATION OF GAPLESS METAL-OXIDE SURGE ARRESTERS

NRS 039-2SURGE ARRESTERS FOR USE IN DISTRIBUTION SYSTEMS – PART 2: DISTRIBUTION CLASS, GAPLESS METAL-OXIDE SURGE ARRESTERS


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NRS040-1 NETWORK OPERATING - DEFINITIONS

Note: The definitions in NRS 040-1 will be included in NRS 000 and NRS 040-1 will be withdrawn

NRS 040-2

NETWORK OPERATING - VOLTAGE COLOUR CODING FOR DIAGRAMMATIC DISPLAYS IN CONTROL ROOM - COLOUR CODING FOR WALL-MOUNTED OPERATING DIAGRAMS AND ELECTRONIC DISPLAYS RELATING TO THE GENERATION, TRANSMISSION AND DISTRIBUTION OF ELECTRICITY

NRS 040-3NETWORK OPERATING - RECOMMENDED MODEL REGULATIONS RELATING TO POWER SYSTEMS FOR OPERATING, ACCESS CONTROL AND SUPERVISION OF SYSTEMS THAT EXCEED 1000 V, FOR THE TRANSMISSION AND DISTRIBUTION OF ELECTRICITY

NRS 040-4NETWORK OPERATING - RECOMMENDED MODEL FOR THE TRAINING, COMPETENCY ASSESSMENT AND AUTHORISATION OF THE ELECTRICITY SUPPLY INDUSTRY FOR NETWORK OPERATIONS

NRS 040-5 NETWORK OPERATING - STANDARD PROCEDURE AND TERMINOLOGY FOR THE ISSUING OF OPERATING INSTRUCTIONS

NRS 040-6 NETWORK OPERATING - EARTHING CODE OF PRACTICE

Note: The main title of the NRS 040 series is to be changed from ‘HV Operating Regulations’ to ‘Network Operating’

NRS 042 GUIDE FOR THE PROTECTION OF ELECTRONIC EQUIPMENT AGAINST DAMAGING TRANSIENTS

NRS 043 CODE OF PRACTICE FOR THE JOINT USE OF STRUCTURES FOR POWER AND TELECOMMUNICATION LINES

NRS 044WORKING PROCEDURES AND STANDARDS IN RESPECT OF THE INSTALLATION OF NEW ELECTRICAL WORKS AND TELECOMMUNICATION FACILITIES, OR THE EXTENSION OR MODIFICATION OF SUCH EXISTING WORKS AND FACILITIES

NRS 046ELECTRICITY DISTRIBUTION - LOAD-BREAK SWITCH-DISCONNECTORS - POLE-MOUNTED TYPE FOR RATED A.C. VOLTAGES ABOVE 1 kV AND UP TO AND INCLUDING 36 kV

NRS 048-4 QUALITY OF SUPPLY - PART 4: APPLICATION GUIDELINES FOR UTILITIES

NRS 048-6 QUALITY OF SUPPLY – PART 6: MEASUREMENT AND REPORTING OF MEDIUM-VOLTAGE NETWORK INTERRUPTION PERFORMANCE

NRS 048-8QUALITY OF SUPPLY – PART 8: MEASUREMENT AND REPORTING OF EXTRA HIGH VOLTAGE (EHV) AND HIGH VOLTAGE (HV) NETWORK INTERRUPTION PERFORMANCE

NRS 048-9QUALITY OF SUPPLY – PART 9: LOAD REDUCTION PRACTICES, SYSTEM RESTORATION PRACTICES, AND CRITICAL & ESSENTIAL LOAD REQUIREMENTS UNDER SYSTEM EMERGENCIES [under development]

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NRS 049 ADVANCED METERING INFRASTRUCTURE SYSTEMS

NRS 051 SUSPENSION AND STRAIN FITTINGS FOR INSULATED SUPPORTING CONDUCTORS USED IN MEDIUM VOLTAGE AERIAL BUNDLED SYSTEMS

NRS 052-1PHOTOVOLTAIC SYSTEMS FOR USE IN INDIVIDUAL HOMES, SCHOOLS AND CLINICS - PART 1: STANDARDIZED REQUIREMENTS APPLICABLE TO OFF-GRID INDIVIDUAL HOMES , SCHOOLS AND CLINICS

NRS 052-2 PHOTOVOLTAIC SYSTEMS FOR USE IN INDIVIDUAL HOMES, SCHOOLS AND CLINICS - PART 2: TEST PROCEDURES FOR MAIN COMPONENTS

Note: NRS 052-2 comprises five sections. More information can be obtained from the NRS website. (http://www.nrs.eskom.co.za)

NRS 052-3PHOTOVOLTAIC SYSTEMS FOR USE IN INDIVIDUAL HOMES, SCHOOLS AND CLINICS PART 3: STANDARDIZED REQUIREMENTS APPLICABLE TO THE INSTALLATION AND MAINTENANCE OF OFF-GRID SYSTEMS IN INDIVIDUAL HOMES , SCHOOLS AND CLINICS

NRS 053 ACCESSORIES FOR MEDIUM-VOLTAGE POWER CABLES (3,8/6,6 kV TO 19/33 kV

NRS 054 POWER TRANSFORMERS

NRS 055 CODE OF PRACTICE FOR REVENUE PROTECTION

NRS 056-1SERVICE DISTRIBUTION BOXES - METER KIOSKS AND DISTRIBUTION KIOSK, PART 1: LOW-VOLTAGE NON-STEEL METER KIOSKS FOR USE IN UNDERGROUND NETWORKS

NRS 056-2SERVICE DISTRIBUTION BOXES - METER KIOSKS AND DISTRIBUTION KIOSK, PART 2: SPECIFICATION FOR GROUND-MOUNTED, LOW-VOLTAGE DISTRIBUTION KIOSKS

NRS 056-3SERVICE DISTRIBUTION BOXES - METER KIOSKS AND DISTRIBUTION KIOSKS, PART 3: SPECIFICATION FOR LOW-VOLTAGE STEEL METER KIOSKS FOR USE IN UNDERGROUND NETWORKS

NRS 058(Interim)

COST OF SUPPLY METHODOLOGY - Reconfirmed

NRS 059RECOMMENDATIONS TO MINIMIZE PROBLEMS ASSOCIATED WITH THE THEFT OF TRANSFORMER NEUTRAL AND NEUTRAL EARTHING COPPER CONDUCTORS

NRS 060CODE OF PRACTICE FOR CLEARANCES FOR ELECTRICAL SYSTEMS WITH RATED VOLTAGES UP TO AND INCLUDING 145 kV, FOR THE SAFETY OF PERSONS

NRS 061-1 SPECIFICATION FOR OVERHEAD GROUND WIRE WITH OPTICAL FIBRE - PART 1: PRODUCT SPECIFICATION

NRS 061-2 SPECIFICATION FOR OVERHEAD GROUND WIRE WITH OPTICAL FIBRE -

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PART 2: INSTALLATION GUIDELINES

NRS 064 GUIDELINE FOR THE EXCHANGE OF SPATIAL INFORMATION IN THE ELECTRICITY SUPPLY INDUSTRY

NRS 066 MEDIUM VOLTAGE INSULATORS

NRS 067 COMPACT CUBICLE, FIXED PATTERN, SWITCHGEAR FOR RATED A.C. VOLTAGES FROM 12 KV UP TO AND INCLUDING 36 KV.

NRS 068 ELECTRICITY DISTRIBUTION - CABLE EARTH FAULT INDICATOR

NRS 069 CODE OF PRACTICE FOR THE RECOVERY OF CAPITAL COSTS FOR DISTRIBUTION NETWORK ASSETS - Reconfirmed

NRS 070 QUALITY OF SERVICE STANDARD FOR NON-GRID ELECTRICITY CUSTOMERS

NRS 071 AUTOMATED METER READING FOR LARGE POWER USERS

NRS 072 OVERHEAD LINE FAULT PATH INDICATORS

NRS 073 WOOD POLES, CROSS-ARMS AND SPACER BLOCKS

NRS 074-1 LOW-VOLTAGE (600/1 000 V) CABLE SYSTEMS FOR UNDERGROUND ELECTRICAL DISTRIBUTION PART 1: CABLES

NRS 075 MECHANICAL TORQUE SHEAR CONNECTORS

NRS 076 EARTHING OF DISTRIBUTION SUBSTATIONS WITH NOMINAL VOLTAGES UP TO AND INCLUDING 132 kV

NRS 077 XPLE-INSULATED CABLES AND ACCESSORIES FOR SYSTEM WITH NOMINAL VOLTAGES OF 44 kV, 66 kV, 88 kV AND 132 kV

NRS 078-1 LONG-SPAN ALL-DIELECTRIC SELF-SUPPORTING FIBRE OPTIC CABLES, PART 1: PRODUCT SPECIFICATION

NRS 078-2 LONG-SPAN ALL-DIELECTRIC SELF-SUPPORTING FIBRE OPTIC CABLES, PART 2: INSTALLATION GUIDELINES

NRS 079-1 MINERAL INSULATING OILS (UNINHIBITED) PART 1: PURCHASE, MANAGEMENT, MAINTENANCE AND TESTING

NRS 079-2 MINERAL INSULATING OILS (UNINHIBITED) Part 2: GUIDELINES FOR THE MANAGEMENT OF INSULATING OIL

NRS 080 QUANTIFYING AND REPORTING OF ENERGY LOSSES IN ELECTRICITY DISTRIBUTION NETWORKS

NRS 081 SINGLE-MODE NON-DISPERSION SHIFTED OPTICAL FIBRES

NRS 083 CODE OF PRACTICE FOR THE APPLICATION OF EMC STANDARDS AND GUIDELINES IN THE TRANSMISSION AND DISTRIBUTION NETWORKS

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NOTE NRS 083 will comprise several parts. Part 1 has been published. Parts 2 & 3 are to be published imminently. Part 4 is under development

NRS 086 CENTRALISED LOAD CONTROL SYSTEMS


NRS 087 GUIDELINES FOR THE PURCHASE USE AND DISPOSAL OF SF6

NRS 088 SINGLE MODE FIBRE OPTIC DUCT CABLES

NRS 089-1 interim MAINTENANCE OF ELECTRICITY NETWORKS - PART 1: POWER CABLES

NRS 089-2-1 interim

MAINTENANCE OF ELECTRICITY NETWORKS - PART 2: OVERHEAD DISTRIBUTION SYSTEMS – SECTION 1: OVERHEAD LINES

NRS 089-2-2 interim

MAINTENANCE OF ELECTRICITY NETWORKS - PART 2: OVERHEAD DISTRIBUTION SYSTEMS – SECTION 2: INSPECTION AND SUPPLEMENTAL TREATMENT OF TREATED WOOD UTILITY POLES

NRS 089-2-3 interim

MAINTENANCE OF ELECTRICITY NETWORKS - PART 2: OVERHEAD DISTRIBUTION SYSTEMS – SECTION 3: THE MANUAL REPLACEMENT OF A ROTTEN WOODEN POLE STRUCTURE

NRS 089-2-4 interim

MAINTENANCE OF ELECTRICITY NETWORKS - PART 2: OVERHEAD DISTRIBUTION SYSTEMS – SECTION 4: CLEARING AND MAINTENANCE OF SERVITUDE ROUTES

NRS 089-3-1 interim

MAINTENANCE OF ELECTRICITY NETWORKS – PART 3 SUBSTATION- SECTION 1: GENERAL

NRS 089-3-2 interim

MAINTENANCE OF ELECTRICITY NETWORKS – PART 3 SUBSTATION- SECTION 2: POWER TRANSFORMER, CIRCUIT BREAKERS, ISOLATORS AND INSTRUMENT TRANSFORMERS

NRS 089-3-3 interim

MAINTENANCE OF ELECTRICITY NETWORKS – PART 3 SUBSTATION- SECTION 3: MINIATURE SUBSTATIONS, DISTRIBUTION TRANSFORMERS AND ELECTRICAL ENCLOSURES

NRS 089-4 interim

MAINTENANCE OF ELECTRICITY NETWORKS – PART 4: CONTROL TECHNOLOGIES

NRS 089-5-1 interim

MAINTENANCE OF ELECTRICITY NETWORKS – PART 5: STREET AND AREA LIGHTING- SECTION 1: STREETLIGHTING MAINTENANCE PLANNING

NRS 089-5-2 interim

MAINTENANCE OF ELECTRICITY NETWORKS – PART 5: STREET AND AREA LIGHTING- SECTION 2: STREETLIGHTING

NRS 089-5-3 interim

MAINTENANCE OF ELECTRICITY NETWORKS – PART 5: STREET AND AREA LIGHTING- SECTION 3: HIGH MAST

NRS 090 MAINTENANCE WORK EXECUTION

NRS 091 HEALTH AND SAFETY GUIDELINES

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NRS 092 CONSTRUCTION GUIDELINES FOR OVERHEAD DISTRIBUTION

NRS 093 GUIDELINES FOR ELECTRICITY DISTRIBUTION NETWORK ASSETS MANAGEMENT

NRS 096-1 ELECTRICITY METERING — ANCILLARY SPECIFICATIONS. Part 1: The sealing of electricity meters

NRS 097- 2-1GRID INTERCONNECTION FOR EMBEDDED GENERATION

PART 2: SMALL SCALE EMBEDDED GENERATIONSECTION 1: UTILITY INTERFACE.

NRS 098 GUIDELINES FOR THE INSTALLATION AND SAFE USE OF PORTABLE GENERATORS ON UTILITIES’ NETWORKS

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7. Withdrawn NRS documentsReference Description Status

NRS 005DISTRIBUTION TRANSFORMERS: PREFERRED REQUIREMENTS FOR APPLICATION IN THE ELECTRICITY SUPPLY INDUSTRY

Replaced by SANS 780

NRS 007 HIGH PRESSURE HIGH TEMPERATURE VALVES Obsolete

NRS 008ENCLOSURES FOR CABLE TERMINATIONS IN AIR - CLEARANCE FOR 7,2 kV AND UP TO AND INCLUDING 36 kV

Replaced by NRS 012

NRS 009-1 ELECTRICITY SALES SYSTEMS - PART 1, GLOSSARY AND SYSTEM OVERVIEW

Replaced by SANS 1524-1

NRS 009-2-6

ELECTRICITY SALES SYSTEMS - PART 2: FUNCTIONAL AND PERFORMANCE REQUIREMENTS. SECTION 6 - MINIMUM FUNCTIONAL REQUIREMENTS FOR A POINT OF SALE

Replaced by NRS 009-9

NRS 010 BATTERIES Replaced by SANS 1632

NRS 014FIXED RADIO EQUIPMENT - PREFERRED REQUIREMENTS FOR MOBILE SERVICE APPLICATIONS

Obsolete

NRS 015 LUBRICANTS AND ALLIED PRODUCTS Obsolete

NRS 016 CODE OF PRACTICE FOR THE EARTHING OF LOW-VOLTAGE DISTRIBUTION SYSTEMS


NRS 017-1SINGLE-PHASE CABLE FOR AERIAL SERVICE CONNECTIONS PART 1: SPLIT-CONCENTRIC CABLE

Replaced by NRS 063

NRS 017-2 SINGLE-PHASE CABLE FOR AERIAL SERVICE CONNECTIONS - PART 2: CONCENTRIC CABLES

Replaced by NRS 062

Note NRS 017 parts 1 and 2 were initially replaced by NRS 062 and NRS 063, which were subsequently replaced by SANS 1507-6.

NRS 019ELECTRICITY DISTRIBUTION - SMALL POWER DISTRIBUTION UNITS (READY BOARDS) FOR SINGLE-PHASE 230 V SERVICE CONNECTIONS


NRS 021 COVERED CONDUCTOR Cancelled

NRS 023 RECOMMENDED PRACTICE FOR LOW COST RETICULATION

Replaced by NRS 034-3

NRS 024 DIESEL ALTERNATOR SETS Replaced by SANS 8528

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http://www.nrs.eskom.co.za/LoginsSecure.asp?FileName=SANS780.pdf


Reference Description Status

NRS 025

PHOTOELECTRIC CONTROL UNITS FOR LIGHTING (PECUs). KEYWORDS: LIGHTING; CONTROL UNITS; PHOTOELECTRIC; SPECIFICATIONS


NRS 026BATTERY CHARGERS - INDUSTRIAL TYPE FOR RATED A.C. VOLTAGES UP TO AND INCLUDING 525 V


NRS 027 DISTRIBUTION TRANSFORMERS - COMPLETELY SELF-PROTECTING TYPE


NRS 045 NATIONAL ACCOUNT CARDS FOR ELECTRICITY CONSUMERS Obsolete

NRS 048-5QUALITY OF SUPPLY - PART 5: INSTRUMENTATION AND TRANSDUCERS FOR VOLTAGE QUALITY MONITORING AND RECORDING


NRS 049 TIME OF USE METERING Cancelled

NRS 050 WATER SUPPLY COMPONENTS (SABS PROJECT) Cancelled

NRS 062CONCENTRIC SINGLE-PHASE AERIAL SERVICE CABLE - FOR DOMESTIC SERVICE CONNECTIONS WITH A COMBINED NEUTRAL-EARTH CONDUCTOR


NRS 063SPLIT-CONCENTRIC SINGLE-PHASE AERIAL SERVICE CABLE - FOR DOMESTIC SERVICE CONNECTIONS WITH SEPARATE NEUTRAL AND EARTH CONDUCTORS


NRS 065 CONTRACT SPECIFICATIONS Cancelled

NRS 085-1STANDARD FOR MINERAL INSULATING OILS - POLYCHLORINATED BIPHENYLS– GUIDELINES TO DEVELOP A PHASE-OUT PLAN

Cancelled

NRS 085-2 STANDARD FOR MINERAL INSULATING OILS - GUIDELINES FOR DISPOSAL Cancelled

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NRS Projects Management Agency

This information brochure has been published by the NRS PMA on behalf of the ESLC. The contact details are given below:

The NRS Projects Manager

Industry Association Resource Centre – Matla House

Eskom

Private Bag X13

Halfway House 1685

Fax : (011) 651 6827

E-mail : [email protected]

Website : http://www.nrs.eskom.co.za

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http://www.nrs.eskom.co.za/