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BS 7870-4.20:1999
Superseded
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LV and MV polymeric insulated cables for use by distribution and generation utilities. Specification for distribution cables with extruded insulation for rated voltages of 11 kV and 33 kV Three-core 11 kV cables - Three core 11 kV cables
Hardcopy , PDF
31-12-2011
English
15-08-1999
Committees responsible
Foreword
1. Scope
2. Normative references
3. Voltage designation
4. Construction and dimensions
5. Test requirements
6. Routine tests
7. Sample tests
8. Type tests
Annex A (informative) User options for three-core
polymeric insulated cables having a rated voltage of
6.35/11 kV
Annex B (informative) Guidance on type tests
Bibliography
Table 1 - Dimensions of shaped solid aluminium conductors
Table 2 - Three-core cable with shaped solid aluminium
conductors and copper wire collective metallic screen
Table 3 - Three-core cable with shaped stranded aluminium
conductors and copper wire collective metallic screen
Table 4 - Three-core cable with circular solid aluminium
conductors and copper wire collective metallic screen
Table 5 - Three-core cable with circular stranded
aluminium conductors and copper wire collective
metallic screen
Table 6 - Three-core cable with shaped solid aluminium
conductors and galvanized steel wire armour
Table 7 - Three-core cable with shaped stranded aluminium
conductors and galvanized steel wire armour
Table 8 - Three-core cable with circular solid aluminium
conductors and galvanized steel wire armour
Table 9 - Three-core cable with circular stranded
aluminium conductors and galvanized steel wire armour
Table 10 - Schedule of tests
Table 11 - D.C. resistance of copper wire screen
Table 12 - Cross-linked polyethylene (XLPE) and ethylene
propylene rubber compound (EPR) insulation
Table 13 - Mass of zinc coating
Table 14 - Medium density polyethylene (MDPE) oversheath
Table 15 - Compatibility requirements
Table 16 - Tan delta in relation to voltage
Table 17 - Tan delta in relation to temperature
Table A.1 - Options to be specified by the user
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