BS 6724:1990
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
Specification for armoured cables for electricity supply having thermosetting insulation with low emission of smoke and corrosive gases when affected by fire
Hardcopy , PDF
15-09-1997
English
30-11-1990
Committees responsible
Foreword
Specification
1. Scope
2. Definitions
3. Voltage designation
4. Conductors
5. Insulation
6. Identification of cores
7. Laying-up
8. Bedding
9. Armour
10. Oversheath
11. Cable marking
12. Schedule of tests
13. Test conditions
14. Routine tests
15. Regular sample tests
16. Special sample tests
17. Type tests
18. Tests on insulation, bedding and oversheath
Appendices
A. Recommendations for selection and operation of
cables
B. Recommendations for installation of cables
C. Information to be provided with enquiry or order
D. Measurement of thickness
E. Abrasion test
F. Measurement of smoke density using the 3 m test
cube
G. Insulation resistance constant test
H. Armour wire tests
J. Resistance of conductor and armour and armour cross-
sectional areas
K. Notes on type tests
L. Guide to use
M. Test for shrinkage of sheath on cable
N. Water immersion test on sheath
Tables
1. Diameter of armour wire and mass of zinc coating
2. Schedule of tests
3. Routine tests
4. Test voltage on completed cables
5. Regular sample tests
6. Special sample tests
7. Type tests
8. Requirements for compatibility of insulation test
9. Requirements for bedding
10. Requirements for oversheath
11. Single-core 600/1000 V cables with circular
stranded copper conductor
12. Single-core 600/1000 V cables with solid aluminium
conductor
13. Two-core 600/1000 V cables with stranded copper
conductors
14. Two-core 600/1000 V cables with solid aluminium
conductors
15. Three-core 600/1000 V cables with stranded copper
conductors
16. Three-core 600/1000 V cables with solid aluminium
conductors
17. Four-core 600/1000 V cables with stranded copper
conductors
18. Four-core 600/1000 V cables with solid aluminium
conductors
19. Four-core 600/1000 V cables with reduced neutral
conductor and with stranded copper conductors
20. Single-core 1900/3300 V cables with circular
stranded copper conductor
21. Single-core 1900/3300 V cables with solid aluminium
conductor
22. Three-core 1900/3300 V cables with stranded copper
conductors
23. Three-core 1900/3300 V cables with solid aluminium
conductors
24. 600/1000 V armoured auxiliary cables with standard
copper conductors
25. Selection of cables for a.c. system
25A. Minimum installation radius
26. Test voltage after installation
27. Vertical force on cable during abrasion test
28. Temperature correction multiplication factors
29. Maximum resistance of conductor and armour for
single-core cables having aluminium wire armour
30. Maximum resistance of conductor and armour for two-
core, three-core and four-core cables having steel
wire armour
31. Resistance of conductor and armour for 600/1000 V
auxiliary cables with copper conductors having
steel wire armour
32. Gross cross-sectional areas of armour wires for
single-core 600/1000 V cables having aluminium
wire armour
33. Gross cross-sectional areas of armour wires for
two-, three- and four-core 600/1000 V cables having
steel wire armour
34. Gross cross-sectional areas of armour wires for
600/1000 V auxiliary cables with copper conductors
having steel wire armour
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