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BSI 20/30417882 DC:2020 Edition

BSI 20/30417882 DC:2020 Edition

$13.70

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

Published By Publication Date Number of Pages
BSI 2020 80
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PDF Catalog

PDF Pages PDF Title
1 form 36
3 20_1935e_CD
9 FOREWORD
11 INTRODUCTION
13 Scope
Normative references
15 Terms and definitions
3.1 Definitions of dimensional values (thicknesses, cross-sections, etc.)
3.1.1
3.1.2
3.2 Definitions concerning tests
3.2.1
3.2.2
3.2.3
3.2.4
16 3.2.5
3.2.6
3.3 Other definitions
3.3.1
3.3.2
3.3.3
3.3.4
3.3.5
3.3.6
17 3.3.7
3.3.8
3.3.9
3.3.10
3.3.11
Voltage designations, materials and rounding of numbers
4.1 Rated voltages
4.2 Cable insulating compounds
4.3 Cable metal screens/sheaths
18 4.4 Cable oversheathing compounds
4.5 Rounding of numbers
Precautions against water penetration in cables
19 Cable characteristics
20 Accessories characteristics
7.1 Gas immersed cable terminations
7.2 Composite insulators for outdoor cable terminations
7.3 Accessory characteristics to be declared
21 Test conditions
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
9.1 General
22 9.2 Partial discharge test
9.3 Voltage test
9.4 Electrical test on oversheath of the cable
Sample tests on cables
10.1 General
23 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
10.6.1 General
24 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
10.7.1 General
10.7.1.1 Lead or lead alloy sheath
10.7.1.1.1 General
25 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
10.9.1 Procedure
26 10.9.2 Requirements
10.10 Measurement of capacitance
10.11 Measurement of density of HDPE insulation
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
11.1 Tests on components of accessory
27 11.2 Tests on complete accessory
Type tests on cable systems
12.1 General
12.2 Range of type approval
28 12.3 Summary of type tests
29 12.4 Electrical type tests on complete cable systems
12.4.1 Test voltage values
12.4.2 Tests and sequence of tests
30 12.4.3 Bending test
12.4.4 Partial discharge tests
31 12.4.5 Tan δ measurement
12.4.6 Heating cycle voltage test
12.4.7 Impulse voltage tests
12.4.7.1 Switching impulse voltage test
32 12.4.7.2 Lightning impulse voltage test followed by a power frequency voltage test
12.4.8 Examination
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
12.4.9.1 General
12.4.9.2 Procedure
33 12.4.9.3 12.4.9.2 Requirements
12.5 Non-electrical type tests on cable components and on complete cable
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
12.5.3.1 Sampling
12.5.3.2 Ageing treatment
34 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
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
12.5.5.1 General
12.5.5.2 Sampling
12.5.5.3 Ageing treatment
12.5.5.4 Mechanical tests
35 12.5.5.5 Requirements
12.5.6 Loss of mass test on PVC oversheaths of type ST2
12.5.6.1 Procedure
12.5.6.2 Requirements
12.5.7 Pressure test at high temperature on oversheaths
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
12.5.8.1 Procedure
12.5.8.2 Requirements
12.5.9 Heat shock test for PVC oversheaths (ST1 and ST2)
12.5.9.1 Procedure
12.5.9.2 Requirements
36 12.5.10 Ozone resistance test for EPR insulation
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)
12.5.13.1 Procedure
12.5.13.2 Requirements
12.5.14 Test under fire conditions
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
37 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
38 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
12.5.17.1 Procedure
12.5.18 Shrinkage test for PE oversheaths (ST3, ST7) and LSHF oversheaths (ST12)
12.5.18.1 Procedure
12.5.18.2 Requirements
Prequalification test of the cable system
13.1 General and range of prequalification test approval
39 13.2 Prequalification test on complete cable system
13.2.1 Summary of prequalification tests
13.2.2 Test voltage values
13.2.3 Test arrangement
40 13.2.4 Heating cycle voltage test
13.2.5 Lightning impulse voltage test
13.2.6 Examination
41 13.3 Tests for the extension of the prequalification of a cable system
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
13.3.2.1 General
42 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
43 Type test on cables
Type test on accessories
Electrical test after installation (on-site tests)
16.1 General
16.2 DC voltage test of the oversheath
16.3 Tests using AC voltage
16.3.1 AC voltage test of the insulation
44 16.3.2 Partial discharge test
53 Annex A (informative) Determination of the cable conductor temperature
A.1 Purpose
A.2 Calibration of the temperature of the main test loop
A.2.1 General
A.2.2 Installation of cable and temperature sensors
55 A.2.3 Calibration method
A.3 Heating for the test
A.3.1 Method 1 – Test using a reference cable
56 A.3.2 Method 2 – Test using conductor temperature calculations and measurement of the surface temperature
A.3.2.1 Calibration of the test cable conductor temperature
A.3.2.2 Test based on measurement of the external temperature
57 Annex B (normative) Rounding of numbers
58 Annex C (informative) List of type, prequalification and extension of prequalification tests for cable systems
60 Annex D (normative) Method of measuring resistivity of semi-conducting screens
63 Annex E (normative) Water penetration test
E.1 Test piece
E.2 Test
E.3 Requirements
65 Annex F (normative) Test for water penetration in the conductor
F.1 Test piece
F.2 Test
F.3 Requirements
67 Annex G (normative) Tests on components of cables with a longitudinally applied metal tape or foil, bonded to the oversheath
G.1 Visual examination
G.2 Adhesion and peel strength
G.2.1 General
G.2.2 Test: Adhesion strength
68 G.3 Test: Peel strength of overlapped metal foil
69 G.3.1 Requirements
71 Annex H (normative) Additional tests for accessories
H.1 General
72 H.2 Range of approval
H.2.1 Range of approval for joints without screen or metal sheath interruption
73 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
H.3.1 Water immersion
H.3.2 Electrical tests
H.3.2.1 General
74 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
75 H.4 Tests of terminations with sheath sectionalizing insulation
H.4.1 DC voltage withstand test between screen and earth
H.4.2 Lightning impulse voltage withstand test between screen and earth
76 H.5 Tests for composite insulators for outdoor terminations
H.5.1 General
H.5.2 Internal pressure test
H.5.3 Cantilever load test
77 Annex I (informative) Guidance on examination of cable and accessories
78 Annex J (informative) Guidance on the heating cycle voltage test – interruption and cycle validity.
J.1 Heating cycle voltage test
J.1.1 Interruption of cycles during a type test
J.1.1.1 Scheduled interruption of test
J.1.1.2 Non-scheduled interruption of test
J.1.2 Valid heating cycles
79 Annex K (normative) Methods of determining the weighted value for the cable for measurement of halogen content
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
80 Bibliography

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