SECTION 1 STANDARD TECHNICAL SPECIFICATION

1 Millennium Challenge Account Namibia: Design, Environmental Assessment and Supervision of construction of Quarantine Camps Consulting Services Africa SECTION 1 STANDARD TECHNICAL SPECIFICATION 1-1 Millennium Challenge Account Namibia: Design, Environmental Assessment and Supervision of construction of Quarantine Camps Consulting Services Africa 1 STANDARD TECHNICAL SPECIFICATION NORED STANDARD SPECIFICATION All equipment supplied, work executed and procedures employed in terms of this contract shall comply fully with the latest revision of the NORED STANDARD SPECIFICATION , which is NOT included in this document, but which is available on application from : The Chief Executive Officer NORED Electricity PO Box 3544 ONGWEDIVA Tel : +264 065 280800 Fax : + 264 065 280848 Email.

2 SUITABILITY, INTERCHANGEABILITY AND STANDARDISATION OF EQUIPMENT All equipment supplied and installed under this contract shall be suitable, and designed, for its intended application. In particular, all conductor and / or staywire clamps and dead-ends or conductor termination lugs or jointing ferrules shall be specifically designed, sized and suitable for the task and function to be performed. Contractors shall submit schedules listing all clamps, dead-ends, connectors and lugs to be used on each type and size of conductor, cable or staywire for approval prior to commencement of construction . The size, type number and / or colour coded identification tag of each component shall be provided and cross-referenced to the conductor, cable or staywire on this schedule.

3 Similar equipment, designed to perform identical functions under similar conditions to be supplied under this contract must be identical in all respects and it shall be possible to exchange any item with any other similar item without affecting the operational integrity of the works. All auxiliary equipment must also be identical, including items such as contactors, fuses, motors, fans, method of wiring, numbering of wires, relays, indication lamps, instruments and other parts. Similar items of equipment, for example such items as fuses, fuse holders, switches, contactors, circuit breakers, lamp holders, push buttons, etc., shall, where possible, be of the same manufacture.

4 Items of similar appearance, whose application cannot be readily identified through visual inspection, shall be clearly marked with a unique and indelible code or number, which shall then be also reflected on the appropriate drawings. STANDARD SPECIFICATIONS All electrical installation work shall comply with SANS 10142, and distribution and reticulation systems, overhead and/or underground, shall in general comply with all the conditions of the Code of Practice for Overhead Power Lines for Conditions Prevailing in South Africa, the Machinery and Occupational Safety Act, the Post Office Act as well as all requirements issued by Nampost, Nampower and other statutory bodies involved, where applicable.

5 All the equipment and materials shall conform to the relevant SANS / SABS, NRS, BSS or IEC Specifications and the latest revisions thereof, where applicable. 1-2 Millennium Challenge Account Namibia: Design, Environmental Assessment and Supervision of construction of Quarantine Camps Consulting Services Africa DESCRIPTION OF SPECIFICATION SOUTH AFRICAN STD IEC BSS 1. SWITCHGEAR, DISTRIBUTION AND CIRCUIT BREAKERS Circuit breakers above 1 kV SANS 62271 62271 5311 Circuit breakers below 1 kV SANS 556 HV Switches SANS 60265 Electrical power, switchgear and associated equipment SANS 60947 5227/5486 Metal-clad switchgear NRS 003 SANS 1885 5227 Metal-enclosed ring main units 1kV to 24kV SANS 1874 Insulation co-ordination 71 Bushing for alternating voltage above 1kV SANS 60137 60137 Busbars and busbar connections SANS 1195 159 Insulated bushings SANS 60137 60137 223 Transformer bushings SANS 1037 SANS 1371 1037 SPECIFICATION and acceptance on sulphur hexa fluoride (SF6)

6 Low voltage surge diverters SANS 61643 Distribution gapless metal-oxide surge arresters NRS 039 SANS 60099 99-1 Current transformers NRS 029 SANS 60044 60044 3938 Voltage transformers NRS 030 SANS 60186 60186 3938 Capacitors 70 1650 Cable sealing boxes 2562 Moulded case circuit breakers SANS 156 Flameproof enclosures for electrical apparatus SANS 60079 60079 Isolators and earthing switches NRS 031 129 5253 Recommendations for the classification of materials for the insulation of electrical machinery and apparatus in relation to in service thermal stability 85 Electrical terminals and connections SANS 1433 Meter cabinets & meter / distribution kiosks NRS 056 SANS 908 Stationary lead-acid batteries SANS 60896 60896 1-3 Millennium Challenge Account Namibia: Design, Environmental Assessment and Supervision of construction of Quarantine Camps Consulting Services Africa 1-4 Millennium Challenge Account Namibia.

7 Design, Environmental Assessment and Supervision of construction of Quarantine Camps Consulting Services Africa DESCRIPTION OF SPECIFICATION SOUTH AFRICAN STD IEC BSS Industrial battery chargers SANS 1652 Pole-mounted reclosers and sectionalisers NRS 036 Portable earthing gear for busbar systems and overhead lines SANS 1934 Earth leakage relays SANS 767 Flush mounted distribution boards SANS 1765 Switches for household and fixed installations SANS 6069 1-5 Millennium Challenge Account Namibia.

8 Design, Environmental Assessment and Supervision of construction of Quarantine Camps Consulting Services Africa 1-6 Millennium Challenge Account Namibia: Design, Environmental Assessment and Supervision of construction of Quarantine Camps Consulting Services Africa DESCRIPTION OF SPECIFICATION SOUTH AFRICAN STD IEC BSS 2. TRANSFORMERS AND MINISUBS Power transformers SANS 60076 60076 171 Distribution transformers SANS 780 76 Minisubstations SANS 1029 Insulating oil for transformers and switchgear SANS 555 296 148 3. CABLES 3,3kV up to 33kV paper insulated cables SANS 97 Electric cables up to 3,3 kV SANS 1507 Low voltage electrical cords SANS 1574 XLPE insulated cables up to 33kV SANS 1339 Welding cables SANS 1576 The selection, cabling and installation of electric power cables SANS 10198 Cable terminations and live conductors within air-insulated enclosures (insulation co-ordination up to & including 36kV) NRS 012 Pilot cables NRS 011 MV cables NRS 013 Concentric house service cable NRS 063 Cable lugs and ferrules NRS 028 Mechanical cable glands SANS 1213 Glands for PVC-insulated cables SANS 808 4.

9 AERIAL BUNDLED CONDUCTORS Aerial bundled conductor cable systems SANS 1418 Installation of ABC cables SANS 10198 LV aerial bundled conductors fittings & connectors NRS 018 Cable ties for use with aerial bundled conductors NRS 020 1-7 Millennium Challenge Account Namibia: Design, Environmental Assessment and Supervision of construction of Quarantine Camps Consulting Services Africa 1-8 Millennium Challenge Account Namibia: Design, Environmental Assessment and Supervision of construction of Quarantine Camps Consulting Services Africa DESCRIPTION OF SPECIFICATION SOUTH AFRICAN STD IEC BSS 5. LIGHTING Streetlighting SANS 10098 Photo electric control units (PECU s - daylight switches) for lighting SANS 1777 Ballasts for tubular fluorescent luminaires SANS 890, SANS 891 Tubular fluorescent lamps SANS 1041 Interior luminaires for fluorescent lamps SANS 1119 Capacitors for tubular lamp fluorescent luminaires SANS 1250 Ballasts for tubular fluorescent lamps SANS60921 Electronic ballasts for tubular fluorescent lamps SANS60929 Design & construction of lighting masts SANS 10225 IP codes SANS 60529 6.

10 INSTRUMENTS AND RELAYS Electrical instruments and meters 51 5685/89 Electrical protective relays 142 Indicating instruments 89 7. MOTORS Induction motors SANS 1804 5000 Small motor starters & contactors SANS 60947 587 General requirements for rotating electrical machines SANS 60034 60034 4999 SPECIFICATION for electrical overhead travelling cranes SANS 4301 466 Dimensions of electric meters 3974 Specifications for grey iron castings 1452 8. FUSES LV fuses up to 1 000V SANS 60269 88 HRC fuses SANS 60269 2692 Outdoor distribution fuse cut-outs (drop-out fuses) up to 33 kV NRS 035 1-9 Millennium Challenge Account Namibia: Design, Environmental Assessment and Supervision of construction of Quarantine Camps Consulting Services Africa DESCRIPTION OF SPECIFICATION SOUTH AFRICAN STD IEC BSS 9.