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S+ IEC 62067 Edition 2.0 2011-11 IEC STANDARDS+ Power cables with extruded insu

S+ IEC 62067 Edition 2.0 2011-11 IEC STANDARDS+ Power cables with extruded insulation and their accessories for rated voltages above 150 kV (Um = 170 kV) up to 500 kV (Um = 550 kV) – Test methods and requirements Câbles d'énergie à isolation extrudée et leurs accessoires pour des tensions assignées supérieures à 150 kV (Um = 170 kV) et jusqu'à 500 kV (Um = 550 kV) – Méthodes et exigences d'essai INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE RH ICS 29.060.20 PRICE CODE CODE PRIX ISBN 978-2-88912-779-5 ® Registered trademark of the International Electrotechnical Commission Marque déposée de la Commission Electrotechnique Internationale ® This is a preview - click here to buy the full publication IEC 62067 Edition 2.0 2011-11 INTERNATIONAL STANDARD NORME INTERNATIONALE Power cables with extruded insulation and their accessories for rated voltages above 150 kV (Um = 170 kV) up to 500 kV (Um = 550 kV) – Test methods and requirements Câbles d'énergie à isolation extrudée et leurs accessoires pour des tensions assignées supérieures à 150 kV (Um = 170 kV) et jusqu'à 500 kV (Um = 550 kV) – Méthodes et exigences d'essai IEC 62067:2011 ® This is a preview - click here to buy the full publication – 2 – 62067 © IEC:2011 CONTENTS FOREWORD ........................................................................................................................... 6 INTRODUCTION ..................................................................................................................... 8 1 Scope ............................................................................................................................... 9 2 Normative references........................................................................................................ 9 3 Terms and definitions ..................................................................................................... 10 3.1 Definitions of dimensional values (thicknesses, cross-sections, etc.) ...................... 10 3.2 Definitions concerning tests ................................................................................... 11 3.3 Other definitions .................................................................................................... 11 4 Voltage designations and materials ................................................................................. 12 4.1 Rated voltages ...................................................................................................... 12 4.2 Cable insulating materials ...................................................................................... 12 4.3 Cable metal screens/sheaths ................................................................................. 12 4.4 Cable oversheathing materials ............................................................................... 12 5 Precautions against water penetration in cables .............................................................. 12 6 Cable characteristics ...................................................................................................... 13 7 Accessory characteristics................................................................................................ 13 8 Test conditions ............................................................................................................... 14 8.1 Ambient temperature ............................................................................................. 14 8.2 Frequency and waveform of power frequency test voltages .................................... 14 8.3 Wave form of impulse test voltages ....................................................................... 14 8.3.1 Lightning impulse voltage ........................................................................... 14 8.3.2 Switching impulse voltage .......................................................................... 14 8.4 Relationship of test voltages to rated voltages ........................................................ 14 8.5 Determination of the cable conductor temperature ................................................. 14 9 Routine tests on cables and on the main insulation of prefabricated accessories ............. 15 9.1 General ................................................................................................................. 15 9.2 Partial discharge test ............................................................................................. 15 9.3 Voltage test ........................................................................................................... 15 9.4 Electrical test on oversheath of the cable ............................................................... 15 10 Sample tests on cables ................................................................................................... 16 10.1 General ................................................................................................................. 16 10.2 Frequency of tests ................................................................................................. 16 10.3 Repetition of tests .................................................................................................. 16 10.4 Conductor examination .......................................................................................... 16 10.5 Measurement of electrical resistance of conductor and of metal screen/sheath....... 16 10.6 Measurement of thickness of insulation and cable oversheath ................................ 17 10.6.1 General ..................................................................................................... 17 10.6.2 Requirements for the insulation .................................................................. 17 10.6.3 Requirements for the cable oversheath ...................................................... 17 10.7 Measurement of thickness of metal sheath............................................................. 17 10.7.1 Lead or lead alloy sheath ........................................................................... 18 10.7.2 Plain or corrugated aluminium sheath ........................................................ 18 10.8 Measurement of diameter ...................................................................................... 18 10.9 Hot set test for XLPE and EPR insulations ............................................................. 19 10.9.1 Procedure .................................................................................................. 19 10.9.2 Requirements ............................................................................................ 19 10.10 Measurement of capacitance ................................................................................. 19 This is a preview - click here to buy the full publication 62067 © IEC:2011 – 3 – 10.11 Measurement of density of HDPE insulation ......................................................... 19 10.11.1 Procedure ............................................................................................... 19 10.11.2 Requirements ......................................................................................... 19 10.12 Lightning impulse voltage test .............................................................................. 19 10.13 Water penetration test ......................................................................................... 19 10.14 Tests on components of cables with a longitudinally applied metal tape or foil, bonded to the oversheath .............................................................................. 19 11 Sample tests on accessories ........................................................................................... 20 11.1 Tests on components ............................................................................................ 20 11.2 Tests on complete accessory ................................................................................. 20 12 Type tests on cable systems ........................................................................................... 20 12.1 General ................................................................................................................. 20 12.2 Range of type approval .......................................................................................... 20 12.3 Summary of type tests ........................................................................................... 21 12.4 Electrical type tests on complete cable systems ..................................................... 22 12.4.1 Test voltage values .................................................................................... 22 12.4.2 Tests and sequence of tests ...................................................................... 22 12.4.3 Bending test .............................................................................................. 23 12.4.4 Partial discharge tests ............................................................................... 23 12.4.5 Tan δ measurement ................................................................................... 24 12.4.6 Heating cycle voltage test .......................................................................... 24 12.4.7 Impulse voltage tests ................................................................................. 24 12.4.8 Examination ............................................................................................... 25 12.4.9 Resistivity of semi-conducting screens ....................................................... 25 12.5 Non-electrical type tests on cable components and on complete cable ................... 26 12.5.1 Check of cable construction ....................................................................... 26 12.5.2 Tests for determining the mechanical properties of insulation before and after ageing ......................................................................................... 26 12.5.3 Tests for determining the mechanical properties of oversheaths before and after ageing .............................................................................. 27 12.5.4 Ageing tests on pieces of complete cable to check compatibility of materials ................................................................................................... 27 12.5.5 Loss of mass test on PVC oversheaths of type ST2 .................................... 28 12.5.6 Pressure test at high temperature on oversheaths ...................................... 28 12.5.7 Test on PVC oversheaths (ST1 and ST2) at low temperature ..................... 28 12.5.8 Heat shock test for PVC oversheaths (ST1 and ST2) .................................. 28 12.5.9 Ozone resistance test for EPR insulation .................................................... 29 12.5.10 Hot set test for EPR and XLPE insulations ................................................ 29 12.5.11 Measurement of density of HDPE insulation .............................................. 29 12.5.12 Measurement of carbon black content of black PE oversheaths (ST3 and ST7) .................................................................................................. 29 12.5.13 Test under fire conditions ......................................................................... 29 12.5.14 Water penetration test .............................................................................. 29 12.5.15 Tests on components of cables with a longitudinally applied metal tape or foil, bonded to the oversheath ....................................................... 30 13 Prequalification test of the cable system.......................................................................... 30 13.1 General and range of prequalification test approval ................................................ 30 13.2 Prequalification test on complete cable system ...................................................... 30 13.2.1 Summary of prequalification tests .............................................................. 30 13.2.2 Test voltage values .................................................................................... 31 13.2.3 Test arrangement ...................................................................................... 31 This is a preview - click here to buy the full publication – 4 – 62067 © IEC:2011 13.2.4 Heating cycle voltage test .......................................................................... 31 13.2.5 Lightning impulse voltage test .................................................................... 32 13.2.6 Examination ............................................................................................... 32 13.3 Tests for the extension of the prequalification of a cable system............................. 32 13.3.1 Summary of the extension of prequalification test ....................................... 32 13.3.2 Electrical part of the extension of prequalification tests on complete cable system.............................................................................................. 32 14 Type test on cables ......................................................................................................... 34 15 Type test on accessories ................................................................................................ 34 16 Electrical test after installation ........................................................................................ 34 16.1 General ................................................................................................................. 34 16.2 DC voltage test of the oversheath .......................................................................... 35 16.3 AC voltage test of the insulation ............................................................................. 35 Annex A (informative) Determination of the cable conductor temperature .............................. 42 Annex B (normative) Rounding of numbers ........................................................................... 47 Annex C (informative) List of type and prequalification and extension of prequalification tests of cable systems................................................................................... 48 Annex D (normative) Method of measuring resistivity of semi-conducting screens ................ 50 Annex E (normative) Water penetration test ......................................................................... 52 Annex F (normative) Tests on components of cables with a longitudinally applied metal tape or foil, bonded to the oversheath .................................................................................... 54 Annex G (normative) Tests of outer protection for joints ....................................................... 57 Bibliography .......................................................................................................................... 60 Figure 1 – Extension of prequalification test arrangement for the prequalification of a system with another joint, designed for rigid as well as for flexible installation ........................ 33 Figure A.1 – Typical test set-up for the reference loop and the main test loop ........................ 43 Figure A.2 – Example of an arrangement of the temperature sensors on the conductor of the reference loop ............................................................................................................. 44 Figure D.1 – Preparation of samples for measurement of resistivity of conductor and insulation screens ................................................................................................................. 51 Figure E.1 – Schematic diagram of apparatus for water penetration test ................................ 53 Figure F.1 – Adhesion of metal foil ........................................................................................ 54 Figure F.2 – Example of overlapped metal foil ....................................................................... 55 Figure F.3 – Peel strength of overlapped metal foil ................................................................ 55 Table 1 – Insulating compounds for cables ............................................................................ 35 Table 2 – Oversheathing compounds for cables ..................................................................... 35 Table 3 – Tan δ requirements for insulating compounds for cables ........................................ 35 Table 4 – Test voltages ......................................................................................................... 36 Table 5 – Non-electrical type tests for insulating and oversheathing compounds for cables ................................................................................................................................... 37 Table 6 – Test requirements for mechanical characteristics of insulating compounds for cables (before and after ageing) ............................................................................................ 38 Table 7 – Test requirements for mechanical characteristics of oversheathing compounds for cables (before and after ageing) .................................................................... 39 Table 8 – Test requirements for particular characteristics of insulating compounds for cables ................................................................................................................................... 40 This is a preview - click here to buy the full publication 62067 © IEC:2011 – 5 – Table 9 – Test requirements for particular characteristics of PVC oversheathing for cables ................................................................................................................................... 41 Table C.1 – Type tests on cable systems ............................................................................... 48 Table C.2 – Prequalification tests on cable systems ............................................................... 49 Table C.3 – Extension of prequalification tests on cable systems ........................................... 49 Table G.1 – Impulse voltage tests ......................................................................................... 58 This is a preview - click here to buy the full publication – 6 – 62067 © IEC:2011 INTERNATIONAL ELECTROTECHNICAL COMMISSION ____________ POWER CABLES WITH EXTRUDED INSULATION AND THEIR ACCESSORIES FOR RATED VOLTAGES ABOVE 150 kV (Um = 170 kV) UP TO 500 kV (Um = 550 kV) – uploads/Litterature/iec62067-ed2-0-rlv-en-pdf.pdf