BS 7197:1990
Current
The latest, up-to-date edition.
Specification for performance of bonds for electric power cable terminations and joints for system voltages up to 36 kV
Hardcopy , PDF
English
29-06-1990
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Committees responsible
Foreword
Specification
1. Scope
2. Definitions
3. Bonds
4. Performance
Appendices
A. Guidance on bonding
B. Performance test methods
C. Bond cross-sectional areas
Tables
1. Physical constants for bonding materials
2. Solid copper bond cross-sectional areas for 1 s
fault duration
3. Solid aluminium bond cross-sectional area for 1 s
fault duration
4. Solid steel bond cross-sectional areas for 1 s
fault duration
Figures
1. Test circuit for continuity bonds used in cable
terminations
2. Test circuit for cable joint earth continuity bonds
Specifies bonds for connecting the metallic envelopes of electric power cables at terminations and joints. Gives performance test methods and tables cross-sectional area of solid copper, aluminium and steel bonds together with guidance on bonding.
| Committee |
GEL/20/11
|
| DevelopmentNote |
Supersedes 88/27188 DC (09/2005) Reviewed and confirmed by BSI, December 2009. (11/2009)
|
| DocumentType |
Standard
|
| Pages |
18
|
| PublisherName |
British Standards Institution
|
| Status |
Current
|
This British Standard specifies requirements for bonds for connecting the metallic envelopes (protective conductors) of electric power cables at terminations and joints for system voltages up to 36 kV for the different types of cables covered by British Standards.
The standard describes performance test methods, tables cross-sectional areas of solid copper, aluminium and steel bonds calculated in accordance with a given formula and gives guidance on matters which affect the following.
- Provision of a circuit in joints between cables and between a cable and its terminal equipment for the transmission of currents which may arise under system fault conditions.
- Provision of bonding for neutral conductors (CNE only).
- Provision of overall protective conductors at joints to provide for the passage of a fault current in the event of mechanical damage or failure of the insulation and to contain the electric field around high voltage conductors.
Guidance on bonding is given in Appendix A.
The standard specifically excludes additional safety precautions necessary when jointing live cables.
NOTE The title of the publication referred to in this standard is given on the inside back cover.
| BS 4727-2:GRP08(1986) : 1986 | GLOSSARY OF ELECTROTECHNICAL POWER TELECOMMUNICATION ELECTRONICS LIGHTING AND COLOUR TERMS - TERMS PARTICULAR TO POWER ENGINEERING - ELECTRIC CABLE TERMINOLOGY |
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