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20/30417882 DC BS IEC 62067. 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, 2020
- form 36
- 20_1935e_CD [Go to Page]
- FOREWORD
- INTRODUCTION
- Scope
- Normative references
- Terms and definitions [Go to Page]
- 3.1 Definitions of dimensional values (thicknesses, cross-sections, etc.) [Go to Page]
- 3.1.1
- 3.1.2
- 3.2 Definitions concerning tests [Go to Page]
- 3.2.1
- 3.2.2
- 3.2.3
- 3.2.4
- 3.2.5
- 3.2.6
- 3.3 Other definitions [Go to Page]
- 3.3.1
- 3.3.2
- 3.3.3
- 3.3.4
- 3.3.5
- 3.3.6
- 3.3.7
- 3.3.8
- 3.3.9
- 3.3.10
- 3.3.11
- Voltage designations, materials and rounding of numbers [Go to Page]
- 4.1 Rated voltages
- 4.2 Cable insulating compounds
- 4.3 Cable metal screens/sheaths
- 4.4 Cable oversheathing compounds
- 4.5 Rounding of numbers
- Precautions against water penetration in cables
- Cable characteristics
- Accessories characteristics [Go to Page]
- 7.1 Gas immersed cable terminations
- 7.2 Composite insulators for outdoor cable terminations
- 7.3 Accessory characteristics to be declared
- Test conditions [Go to Page]
- 8.1 Ambient temperature
- 8.2 High voltage tests
- 8.3 Waveform of impulse test voltages
- 8.4 Relationship of test voltages to rated voltages
- 8.5 Determination of the cable conductor temperature
- Routine tests on cables and accessories [Go to Page]
- 9.1 General
- 9.2 Partial discharge test
- 9.3 Voltage test
- 9.4 Electrical test on oversheath of the cable
- Sample tests on cables [Go to Page]
- 10.1 General
- 10.2 Frequency of tests
- 10.3 Repetition of tests
- 10.4 Conductor examination
- 10.5 Measurement of electrical resistance of conductor and of metal screen/sheath
- 10.6 Measurement of thickness of insulation and oversheath [Go to Page]
- 10.6.1 General [Go to Page]
- 10.6.1.1 Requirements for the insulation
- 10.6.1.2 Requirements for the cable oversheath
- 10.7 Measurement of thickness of metal sheath [Go to Page]
- 10.7.1 General [Go to Page]
- 10.7.1.1 Lead or lead alloy sheath [Go to Page]
- 10.7.1.1.1 General
- 10.7.1.1.2 Strip method
- 10.7.1.1.3 Ring method
- 10.7.1.2 Copper or aluminium sheath
- 10.7.1.3 Metal tape for CD design
- 10.8 Measurement of diameters
- 10.9 Hot set test for XLPE and EPR insulations [Go to Page]
- 10.9.1 Procedure
- 10.9.2 Requirements
- 10.10 Measurement of capacitance
- 10.11 Measurement of density of HDPE insulation [Go to Page]
- 10.11.1 Procedure
- 10.11.2 Requirements
- 10.12 Lightning impulse voltage test
- 10.13 Water penetration test
- 10.14 Additional Tests on components of cables with a longitudinally applied metal tape or foil, bonded to the oversheath
- Sample tests on accessories [Go to Page]
- 11.1 Tests on components of accessory
- 11.2 Tests on complete accessory
- Type tests on cable systems [Go to Page]
- 12.1 General
- 12.2 Range of type approval
- 12.3 Summary of type tests
- 12.4 Electrical type tests on complete cable systems [Go to Page]
- 12.4.1 Test voltage values
- 12.4.2 Tests and sequence of tests
- 12.4.3 Bending test
- 12.4.4 Partial discharge tests
- 12.4.5 Tan δ measurement
- 12.4.6 Heating cycle voltage test
- 12.4.7 Impulse voltage tests [Go to Page]
- 12.4.7.1 Switching impulse voltage test
- 12.4.7.2 Lightning impulse voltage test followed by a power frequency voltage test
- 12.4.8 Examination [Go to Page]
- 12.4.8.1 Cable and accessories
- 12.4.8.2 Cables with a longitudinally applied metal tape or foil, bonded to the oversheath
- 12.4.9 Resistivity of semi-conducting screens [Go to Page]
- 12.4.9.1 General
- 12.4.9.2 Procedure
- 12.4.9.3 12.4.9.2 Requirements
- 12.5 Non-electrical type tests on cable components and on complete cable [Go to Page]
- 12.5.1 General
- 12.5.2 Check of cable construction
- 12.5.3 Tests for determining the mechanical properties of insulation before and after ageing [Go to Page]
- 12.5.3.1 Sampling
- 12.5.3.2 Ageing treatment
- 12.5.3.3 Conditioning and mechanical tests
- 12.5.3.4 Requirements
- 12.5.4 Tests for determining the mechanical properties of oversheaths before and after ageing [Go to Page]
- 12.5.4.1 Sampling
- 12.5.4.2 Ageing treatment
- 12.5.4.3 Requirements
- 12.5.5 Ageing tests on pieces of complete cable to check compatibility of materials [Go to Page]
- 12.5.5.1 General
- 12.5.5.2 Sampling
- 12.5.5.3 Ageing treatment
- 12.5.5.4 Mechanical tests
- 12.5.5.5 Requirements
- 12.5.6 Loss of mass test on PVC oversheaths of type ST2 [Go to Page]
- 12.5.6.1 Procedure
- 12.5.6.2 Requirements
- 12.5.7 Pressure test at high temperature on oversheaths [Go to Page]
- 12.5.7.1 Procedure
- 12.5.7.2 Requirements
- 12.5.8 Test on PVC oversheaths (ST1, ST2) and LSHF oversheaths (ST12) at low temperature [Go to Page]
- 12.5.8.1 Procedure
- 12.5.8.2 Requirements
- 12.5.9 Heat shock test for PVC oversheaths (ST1 and ST2) [Go to Page]
- 12.5.9.1 Procedure
- 12.5.9.2 Requirements
- 12.5.10 Ozone resistance test for EPR insulation [Go to Page]
- 12.5.10.1 Procedure
- 12.5.10.2 Requirements
- 12.5.11 Hot set test for EPR and XLPE insulations
- 12.5.12 Measurement of density of HDPE insulation
- 12.5.13 Measurement of carbon black content of black PE oversheaths (ST3 and ST7) [Go to Page]
- 12.5.13.1 Procedure
- 12.5.13.2 Requirements
- 12.5.14 Test under fire conditions [Go to Page]
- 12.5.14.1 General
- 12.5.14.2 Flame spread test on single cables
- 12.5.14.3 Test for vertical flame spread of vertically mounted cables
- 12.5.14.4 Measurement of smoke density of cables under defined conditions
- 12.5.14.5 Determination of acidity (by pH measurement) and conductivity of gases evolved during combustion of the oversheath
- 12.5.14.6 Measurement of halogen content of gases evolved during combustion of the oversheath
- 12.5.14.7 Determination of acidity (by pH measurement) and conductivity of gases evolved during combustion of the non-metallic materials in the cable
- 12.5.14.8 Measurement of halogen content of gases evolved during combustion of the non-metallic materials in the cable
- 12.5.15 Water penetration test
- 12.5.16 Tests on components of cables with a longitudinally applied metal tape or foil, bonded to the oversheath
- 12.5.17 Shrinkage test for PE, HDPE and XLPE insulations [Go to Page]
- 12.5.17.1 Procedure
- 12.5.18 Shrinkage test for PE oversheaths (ST3, ST7) and LSHF oversheaths (ST12) [Go to Page]
- 12.5.18.1 Procedure
- 12.5.18.2 Requirements
- Prequalification test of the cable system [Go to Page]
- 13.1 General and range of prequalification test approval
- 13.2 Prequalification test on complete cable system [Go to Page]
- 13.2.1 Summary of prequalification tests
- 13.2.2 Test voltage values
- 13.2.3 Test arrangement
- 13.2.4 Heating cycle voltage test
- 13.2.5 Lightning impulse voltage test
- 13.2.6 Examination
- 13.3 Tests for the extension of the prequalification of a cable system [Go to Page]
- 13.3.1 Summary of the extension of prequalification test
- 13.3.2 Electrical part of the extension of prequalification tests on complete cable system [Go to Page]
- 13.3.2.1 General
- 13.3.2.2 Test voltage values
- 13.3.2.3 Sequence of the electrical part of the extension of prequalification tests
- 13.3.2.4 Heating cycle test without voltage
- Type test on cables
- Type test on accessories
- Electrical test after installation (on-site tests) [Go to Page]
- 16.1 General
- 16.2 DC voltage test of the oversheath
- 16.3 Tests using AC voltage [Go to Page]
- 16.3.1 AC voltage test of the insulation
- 16.3.2 Partial discharge test
- Annex A (informative) Determination of the cable conductor temperature [Go to Page]
- A.1 Purpose
- A.2 Calibration of the temperature of the main test loop [Go to Page]
- A.2.1 General
- A.2.2 Installation of cable and temperature sensors
- A.2.3 Calibration method
- A.3 Heating for the test [Go to Page]
- A.3.1 Method 1 – Test using a reference cable
- A.3.2 Method 2 – Test using conductor temperature calculations and measurement of the surface temperature [Go to Page]
- A.3.2.1 Calibration of the test cable conductor temperature
- A.3.2.2 Test based on measurement of the external temperature
- Annex B (normative) Rounding of numbers
- Annex C (informative) List of type, prequalification and extension of prequalification tests for cable systems
- Annex D (normative) Method of measuring resistivity of semi-conducting screens
- Annex E (normative) Water penetration test [Go to Page]
- E.1 Test piece
- E.2 Test
- E.3 Requirements
- Annex F (normative) Test for water penetration in the conductor [Go to Page]
- F.1 Test piece
- F.2 Test
- F.3 Requirements
- Annex G (normative) Tests on components of cables with a longitudinally applied metal tape or foil, bonded to the oversheath [Go to Page]
- G.1 Visual examination
- G.2 Adhesion and peel strength [Go to Page]
- G.2.1 General
- G.2.2 Test: Adhesion strength
- G.3 Test: Peel strength of overlapped metal foil [Go to Page]
- G.3.1 Requirements
- Annex H (normative) Additional tests for accessories [Go to Page]
- H.1 General
- H.2 Range of approval [Go to Page]
- H.2.1 Range of approval for joints without screen or metal sheath interruption
- H.2.2 Range of approval for joints with screen or metal sheath interruption
- H.2.3 Range of approval for accessories for cable screen interruption and/or earth connection
- H.2.4 Range of approval for terminations with sectionalizing insulation
- H.3 Tests of joints with or without screen or metal sheath interruption and accessories for cable screen interruption and/or earth connection [Go to Page]
- H.3.1 Water immersion
- H.3.2 Electrical tests [Go to Page]
- H.3.2.1 General
- Annex A
- Annex B
- Annex C
- Annex D
- Annex E
- Annex F
- Annex G
- G.1
- G.2
- G.3
- G.3.1
- G.3.2
- G.3.3
- H.3.2.2 DC voltage withstand test between screen and earth
- H.3.2.3 DC voltage withstand test between screen and screen
- H.3.2.4 Lightning impulse voltage withstand test between screen and earth
- H.3.2.5 Lightning impulse voltage withstand test between screen and screen
- H.4 Tests of terminations with sheath sectionalizing insulation [Go to Page]
- H.4.1 DC voltage withstand test between screen and earth
- H.4.2 Lightning impulse voltage withstand test between screen and earth
- H.5 Tests for composite insulators for outdoor terminations [Go to Page]
- H.5.1 General
- H.5.2 Internal pressure test
- H.5.3 Cantilever load test
- Annex I (informative) Guidance on examination of cable and accessories
- Annex J (informative) Guidance on the heating cycle voltage test – interruption and cycle validity. [Go to Page]
- J.1 Heating cycle voltage test [Go to Page]
- J.1.1 Interruption of cycles during a type test [Go to Page]
- J.1.1.1 Scheduled interruption of test
- J.1.1.2 Non-scheduled interruption of test
- J.1.2 Valid heating cycles
- Annex K (normative) Methods of determining the weighted value for the cable for measurement of halogen content [Go to Page]
- K.1 Calculating the weighted value for the cable when the halogen content of individual non-metallic material is tested
- K.2 Preparation of the test sample for measurement of halogen content on a sample representative of the cable construction
- Bibliography [Go to Page]