BS 7870-4.20:1999
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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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
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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
Specifies the construction and dimensions of 6.35/11(12) kV three- core cables comprising conductors of aluminium, extruded insulation of crosslinked polyethylene or ethylene propylene rubber, a collective metallic screen of copper or steel wire, and an oversheath of medium-density polyethylene. The cables can be laid directly in the ground, in ducts or in air, for operation at a continuous maximum conductor temperature of 90 degC and a maximum conductor short-circuit temperature of 250 degC. Annexes summarize user options and give guidance on type testing. A long-term test is included for assessing performance in wet conditions.
| Committee |
GEL/20/16
|
| DevelopmentNote |
Reviewed and confirmed by BSI, October 2005. (09/2005)
|
| DocumentType |
Standard
|
| Pages |
20
|
| PublisherName |
British Standards Institution
|
| Status |
Superseded
|
| SupersededBy |
| BS 7888-4.1(2006) : 2006 | TEST REQUIREMENTS ON ACCESSORIES FOR USE ON POWER CABLES OF RATED VOLTAGE FROM 3,6/6(7,2) KV UP TO 20,8/36(42) KV - PART 1: CABLES WITH EXTRUDED INSULATION |
| HD 629.1 S2:2006/A1:2008 | TEST REQUIREMENTS ON ACCESSORIES FOR USE ON POWER CABLES OF RATED VOLTAGE FROM 3,6/6(7,2) KV UP TO 20,8/36(42) KV - PART 1: CABLES WITH EXTRUDED INSULATION |
| BS 6622:2007 | Electric cables. Armoured cables with thermosetting insulation for rated voltages from 3.8/6.6 kV to 19/33 kV. Requirements and test methods |
| BS EN 60811-1-1:1995 | Insulating and sheathing materials of electric cables. Common test methods. General application Measurement of thickness and overall dimensions. Tests for determining the mechanical properties - Section 1: Measurement of thickness and overall dimensions - Tests for determining the mechanical properties |
| BS EN 60811-1-3:1995 | Insulating and sheathing materials of electric cables. Common test methods. General application Methods for determining the density. Water absorption tests. Shrinkage test |
| BS EN 60811-3-1:1995 | Insulating and sheathing materials of electric cables. Common test methods. Methods specific to PVC compounds Pressure test at high temperature. Tests for resistance to cracking |
| BS EN 60811-2-1:1998 | Insulating and sheathing materials of electric cables. Common test methods. Methods specific to elastomeric compounds Methods specific to elastomeric compounds. Ozone resistance, hot set and mineral oil immersion tests |
| BS EN 60811-1-2:1995 | Insulating and sheathing materials of electric cables. Common test methods. General application Thermal ageing methods |
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