Edition 5.02020-05 REDLINEVERSION
INTERNATIONAL STANDARD
Power cableswith extruded insulation and their accessories forratedvoltagesabove30kV(Um=36kV)up to 150kV(Um=170 kV)-Testmethods andrequirements
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INTERNATIONAL STANDARD
Power cableswith extruded insulation and their accessoriesforratedvoltagesabove30kV(Um=36kV)up to 150kV(Um=170kV)-Testmethods andrequirements
INTERNATIONALELECTROTECHNICALCOMMISSION
ISBN 978-2-8322-8381-3
CONTENTS
FOREWORD. .8INTRODUCTION 101 Scope ..122 Normative references ...1.23 Terms and definitions ...153.2 3.1 Definitions of dimensional values (thicknesses cross-sections etc.) Definitions concerning tests. ...15 153.3 Other definitions ...64 Voltage designations materials and rounding of numbers ..174.1 4.2 Rated voltages.. Cable insulating-materials pounds . .17 174.3 Cable metal screens/sheaths. 174.4 4.5 Cable oversheathing-materials pounds Rounding of numbers. .18 18Precautions against water penetration in cables .186 Cable characteristics. ...197 Accessories characteristics 207.1 7.2 Gas immersed cable terminations. Composite insulators for outdoor cable terminations 20 207.3 Accessory characteristics to be declared 20Test conditions.. .218.1 8.2 -Frequency and waveform of power frequency test voltages. Ambient temperature. 218.2 High voltage tests . 218.3 Waveform of lightning impulse test voltages. 218.4 8.5 Relationship of test voltages to rated voltages Determination of the cable conductor temperature 21 229 Routine tests on cables and-on-the-main insulation of prefabricated accessories. 229.1 General. 229.3 9.2 Voltage test Partial discharge test. .22 .239.4 Electrical test on oversheath of the cable.. 2310 Sample tests on cables.. .2310.2 10.1 Frequency of tests General. 23 2310.3 Repetition of tests. 2310.4 Measurement of electrical resistance of conductor and metal screen. Conductor examination .24 2410.6 10.5 Measurement of thickness of cable insulation and oversheath 2410.6.1 General .2410.6.2 10.6.3 Requirements for the cable oversheath. Requirements for the insulation . 25 2510.7 Measurement of thickness of metal sheath. 2510.7.1 General 2510.7.2 Lead or lead alloy sheath. 26
10.7.3 10.7.4 Plain or corrugated Copper or aluminium sheath Metal tape for CD design ... 26 2710.8 Measurement of diameters. .2710.9 Hot set test for XLPE EPR and HEPR insulations... .2710.9.1 10.9.2 Requirements. Procedure.. .27 .2710.10 Measurement of capacitance ...2710.11 Measurement of density of HDPE insulation. .2710.11.1 10.11.2 Requirements - Procedure. .27 .2710.12 Lightning impulse voltage test. ..2710.14Additional tests on ponents of cables with a longitudinally applied metal 10.13 Water penetration test. ..28tape or foil bonded to the oversheath. .2811 Sample tests on accessories . 2811.1 11.2 Tests on ponents of accessory Tests on plete accessory .. .28 2812 Type tests on cable systems. .2912.1 General. ..2912.2 12.3 Range of type approval. Summary of type tests .2912.4 Electrical type tests on-plete cable systems. .3112.4.1 12.4.2 Test voltage values. Tests and sequence of tests. .3112.4.3 Bending test . ...2 3212.4.4 Partial discharge tests .3312.4.5 12.4.6 Tan d measurement. Heating cycle voltage test.. ..34 .3412.4.7 Lightning impulse voltage test followed by a power frequency voltage12.4.8 test.. Examination. ..35 .3512.4.9 Resistivity of semi-conducting screens 3512.5 Non-electrical type tests on cable ponents and on plete cable. 912.5.1 12.5.2 General Check of cable construction.. ...36 .3612.5.3 Tests for determining the mechanical properties of insulation before and12.5.4 after ageing. Tests for determining the mechanical properties of oversheaths before .36and after ageing ... .3712.5.5 Ageing tests on pieces of plete cable to check patibility of materials .3712.5.6 Loss of mass test on PVC oversheaths of type ST2 812.5.7 Pressure test at high temperature on oversheaths .12.5.8 Test on PVC oversheaths (ST ST2) and LSHF oversheaths (ST12) at low temperature.. ...3912.5.9 Heat shock test for PVC oversheaths (ST and ST2) ..3912.5.10 Ozone resistance test for EPR and HEPR insulations. ...3912.5.12 12.5.11 Hot set test for EPR HEPR and XLPE insulations Measurement of density of HDPE insulation 40
