R=Required by Lab S=May be subcontracted IEC SYSTEM FOR CONFORMITY TESTING AND CERTIFICATION OF ELECTRICAL EQUIPMENT COMMITTEE OF TESTING LABORATORIES

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1 IEC SYSTEM FO CONFOMITY TESTING AND CETIFICATION OF ELECTICAL EQUIPMENT COMMITTEE OF TESTING LABOATOIES TESTING AND MEASUING EQUIPMENT/ALLOWED SUBCONTACTING Power cables with extruded insulation and their accessories for rated voltages above 30kV (Um=36kV) up to 150kV (Um=170kV) Test methods and requirements IEC Edition ( ) =equired by Lab S=May be subcontracted Table C.1 12,14,15 Table C.1 item c 12.4,14.4,15.4 Table C.1 item e Type tests on cable systems, on cables and on accessories Electrical type tests on cable systems, on cables and on accessories Bending test Test cylinder. Table C.1 item e Partial discharge tests at ambient temperature High voltage power supply(ac); voltmeter; measuring circuit; discharge calibrator; double pulse generator; terminal impedance or reflection suppressor(if necessary). 1/10

2 IEC SYSTEM FO CONFOMITY TESTING AND CETIFICATION OF ELECTICAL EQUIPMENT COMMITTEE OF TESTING LABOATOIES Table C.1 item f Tanδmeasurement Tank of liquid, oven or current heating system; thermometer of thermocouple; voltage power supply(ac); tanδ measurement apparatus. Table C.1 item g Heating cycle voltage test Current heating system; thermocouple; suitable time meter; high voltage power supply (AC). Table C.1 item h Partial discharge tests at high temperature Partial discharge tests at ambient temperature ( after final cycle or after lightning impulse voltage test in item i) High voltage power supply(ac); voltmeter; measuring circuit; discharge calibrator; double pulse generator; terminal impedance or reflection suppressor(if necessary); Current heating system; thermocouple; suitable time meter. High voltage power supply(ac); voltmeter; measuring circuit; discharge calibrator; double pulse generator; terminal impedance or reflection suppressor(if necessary). Table C.1 item i Lightning impulse voltage test followed by a power frequency voltage test Current heating system; thermocouple; impulse voltage generator; high voltage power supply (AC); suitable time meter. Table C.1 item j Partial discharge tests at high temperature ( if not carried out after item g) above) High voltage power supply(ac); voltmeter; measuring circuit; discharge calibrator; double pulse generator; terminal impedance or reflection suppressor(if necessary); Current heating system; thermocouple; suitable time meter. Partial discharge tests at ambient High voltage power supply(ac); voltmeter; measuring circuit; 2/10

3 IEC SYSTEM FO CONFOMITY TESTING AND CETIFICATION OF ELECTICAL EQUIPMENT COMMITTEE OF TESTING LABOATOIES temperature ( if not carried out after item g) above) discharge calibrator; double pulse generator; terminal impedance or reflection suppressor(if necessary). Table C.1 item k Annex G Test of outer protection for joints Header tank connected to a sealed-off vessel or equivalent device; water heating system; thermocouple; suitable time meter; high voltage power supply(ac); voltage power supply(dc); impulse voltage generator Table C.1 item l Table C.1 item m Table C.1 item n 12.5 Examination Normal or corrected vision without magnification esistivity of semi-conducting screens Oven; silver paint; testing apparatus for measuring resistivity. Non-electrical type tests on cable components and on complete cable Check of cable construction same with Clause 10.4,10.6, Conductor examination Vernier caliper or micrometer caliper 10.6 Measurement of thickness of cable insulation and oversheath 10.7 Measurement of thickness of metal Measuring microscope or profile projector of at least 10 x magnification. 3/10

4 IEC SYSTEM FO CONFOMITY TESTING AND CETIFICATION OF ELECTICAL EQUIPMENT COMMITTEE OF TESTING LABOATOIES sheath Lead or lead alloy sheath Strip method Micrometer with a plane faces of 4mm to 8mm diameter and an accuracy ±0,01mm ing method Micrometer having either one flat nose and one ball nose, or one flat nose and a flat rectangular nose 0,8mm wide and 2,4mm long with an accuracy ±0,01mm Plain or corrugated aluminium sheath Tests for determining the mechanical properties of insulation before and after ageing Tests for determining the mechanical properties of oversheaths before and after ageing Micrometer with ball noses of radius about 3mm and an accuracy ±0,01mm. Tensile machine and system for measurement of the elongation; equipment for punching dumb-bell test pieces and equipment for cutting or grinding the insulation to obtain 2 parallel surfaces; Optical measuring instrument / dial gauge; Oven with natural air flow or air flow by pressure, airflow rate: 8~20 completed air changes per hour. Tensile machine and system for measurement of the elongation; equipment for punching dumb-bell test pieces and equipment for cutting or grinding the insulation to obtain 2 parallel surfaces; Optical measuring instrument / dial gauge; Oven with natural air flow or air flow by pressure, airflow rate: 8~20 completed air 4/10

5 IEC SYSTEM FO CONFOMITY TESTING AND CETIFICATION OF ELECTICAL EQUIPMENT COMMITTEE OF TESTING LABOATOIES changes per hour Ageing tests on pieces of complete cable to check compatibility of materials Loss of mass test on PVC oversheaths of type ST Pressure test at high temperature on oversheaths Test on PVC oversheaths (ST1, ST2) at low temperature Elongation test at low temperature Tensile machine and system for measurement of the elongation; equipment for punching dumb-bell test pieces and equipment for cutting or grinding the insulation to obtain 2 parallel surfaces; Optical measuring instrument / dial gauge; Oven with natural air flow or air flow by pressure, airflow rate: 8~20 completed air changes per hour. Oven with natural air flow or air flow by pressure, airflow rate: 8~20 completed air changes per hour; analytical balance with a sensitivity of 0,1mg; punching dies for dumb-bell test pieces; desiccator with silica gel or similar material. Indentation device consists of a rectangular blade with an edge 0,7 0,01mm wide, loads (weights) and supports; air oven; microscope or profile projector with two decimal places. Tensile machine with a cooling device or tensile machine installed in a cooling chamber; system for measurement of the elongation; equipment for cutting or grinding the sample and equipment for punching dumb-bell test pieces. 5/10

6 IEC SYSTEM FO CONFOMITY TESTING AND CETIFICATION OF ELECTICAL EQUIPMENT COMMITTEE OF TESTING LABOATOIES Impact test at low temperature Heat shock test for PVC oversheaths (ST1 and ST2) Ozone resistance test for EP and HEP insulations Hot set test for EP, HEP and XLPE insulations Measurement of density of HDPE insulation Impact test apparatus; pad of sponge rubber about 40mm; suitable low temperature cabinet; hammers; caliper for measurement of the height of fall hammer. Mandrel with different diameters; air oven. Device for generating a controlled amount of ozone; a means for circulating ozonized air under controlled conditions of humility and temperature through a chamber containing the test pieces to be tested; a means for determination of ozone concentration; suitable device for the clamping and elongation of test pieces; cylindrical mandrels consisting of wood or metal; desiccator filled with silica gel or equivalent material; accurate laboratory balance reading to 0,1mg. Oven with natural air flow or air flow by pressure, airflow rate: 8~20 completed air changes per hour; grips; weights; system for measurement of the elongation. Ethanol of analytical grade or another suitable liquid; distilled or deionized water; mixing cylinder; thermostat; hydrometer calibrated at (23.0±0.1) ; thermometer graduated in tenths of a degree Celsius. S Measurement of carbon black content of Device consists of furnace, combustion boat about 75mm long, S 6/10

7 IEC SYSTEM FO CONFOMITY TESTING AND CETIFICATION OF ELECTICAL EQUIPMENT COMMITTEE OF TESTING LABOATOIES black PE oversheaths (ST3 and ST7) hard glass/silica / porcelain combustion tube with bore approximately 30mm and length 400±50mm, stopper carrying a thermometer and tube; desiccator; analytical balance with a sensitivity of 0,1mg; Nitrogen; air or oxygen. Thermogravimetric analysis as an alternative test method Test under fire conditions Propane gas burner: 1 kw pre-mixed flame including system of confirmation of test flame 3-sided metallic screen 1200 mm high, 300 mm wide and 450 mm deep with open front and closed top and bottom; suitable timer; vernier caliper with an accuracy of 1mm; propane gas with the prescribed purity Annex E Water penetration test Test cylinder; current heating system; timer; thermocouple; apparatus for water penetration test Annex F Tests on components of cables with a longitudinally applied metal tape or foil, bonded to the oversheath Tensile testing machine Shrinkage test for PE, HDPE and XLPE insulations Shrinkage test for PE oversheaths (ST3 and ST7) Air oven; support or talc bath; measuring device with a scale division of 0.5mm; Air oven; support; measuring tape with a scale division of 1mm Determination of hardness of HEP Test instrument for measuring hardness; Groove or metal jig; V- 7/10

8 IEC SYSTEM FO CONFOMITY TESTING AND CETIFICATION OF ELECTICAL EQUIPMENT COMMITTEE OF TESTING LABOATOIES insulation blocks Determination of the elastic modulus of HEP insulation Tensile machine; equipment for punching dumb-bell test pieces and equipment for cutting or grinding the insulation to obtain 2 parallel surfaces; optical measuring instrument / dial gauge. Table C.2 Prequalification test of the cable system 13 Table C.2 item b 13.2 Prequalification test on complete system Table C.2 item f Heating cycle voltage test Current heating system; thermocouple; suitable time meter; high voltage power supply (AC). Table C.2 item g Lightning impulse voltage test Current heating system; thermocouple; impulse voltage generator. Table C.2 item h Table C Examination Normal or corrected vision without magnification Tests for the extension of the prequalification of a cable system 8/10

9 IEC SYSTEM FO CONFOMITY TESTING AND CETIFICATION OF ELECTICAL EQUIPMENT COMMITTEE OF TESTING LABOATOIES Table C.3 item c Table C.3 item f Electrical part of the extension of prequalification tests on complete cable system Sequence of the electrical part of the extension of prequalification tests a) Bending test for cables; see b) Partial discharge test for cable system see c) Heating cycle test without voltage see d) Tan δ measurement see e) Heating cycle voltage test see f) Partial discharge test at ambient temperature and at high temperature. g) Lightning impulse voltage test followed by a power frequency voltage see see h) Partial discharge tests, if not see /10

10 IEC SYSTEM FO CONFOMITY TESTING AND CETIFICATION OF ELECTICAL EQUIPMENT COMMITTEE OF TESTING LABOATOIES previously carried out in item e) above; i) Tests of outer protection for joints see Table C.1 item k Annex G j) Examination of the cable system with cable and accessories k) esistivity of semi-conducting screens see see Table C.3 item g Heating cycle test without voltage Current heating system; thermocouple; suitable time meter Non-electrical part of the extension of prequalification tests on complete cable see /10

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