BS 5622-2:1979
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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Guide for insulation co-ordination Application guide
Hardcopy , PDF
English
31-01-1979
15-04-1997
National foreword
Cooperating organizations
Section one - Scope and reference to existing IEC
publications
1. Scope
2. Reference to existing IEC publications
Section two - Voltage stresses in service
3. General
4. Power-frequency voltages
5. Temporary overvoltages
6. Switching and lightning overvoltages
7. Determination of expected overvoltage levels
Section three - Insulation withstand
8. General
9. Insulation behaviour at power-frequency voltages
and temporary overvoltages
10. Probability of disruptive discharge of insulation
under impulse voltages
11. Apparatus with windings
Section four - Protective devices
12. General
13. Non-linear resistor-type surge arresters
14. Expulsion-type surge arresters
15. Spark gaps
16. Application of different protective devices
Section five - Coordination between stresses and
withstand considerations common to ranges A, B and C
17. Insulation design to power-frequency operating
voltage and temporary overvoltages. Problems of
pollution and ageing
18. Pollution
19. Ageing
Section six - Coordination between stresses and
withstand in voltage range A
20. Selection of the rated power-frequency withstand
voltage
21. Selection of the rated lightning-impulse withstand
voltage
Section seven - Coordination between stresses and
withstand in voltage range B
22. Selection of the rated power-frequency withstand
voltage and the rated lightning-impulse withstand
voltage
Section eight - Coordination between stresses and
withstand in voltage range C
23. Insulation design with respect to power-frequency
voltage and temporary overvoltages
24. Insulation design with respect to switching and
lightning overvoltages
25. Block-diagram of the insulation design and
coordination of an electrical installation
Appendix A - Surge transference through transformers
Appendix B - Validity of the tests in Clauses 52, 53
and 54 of IEC Publications 71-1
Appendix C - Statistical evaluation of the protective
effect of spark gaps
Appendix D - Examples of application
Appendix E - Clearances in air between live conductive
parts and earthed structures to secure a
specified impulse withstand voltage for
dry conditions
Tables
Figures
Guidance for national and economical solutions rather than strict rules for insulation coordination. Deals with the selection of the electric strength of equipment, of surge arresters or protective spark gaps, and considers the extent to which control of switching overvoltages may be useful.
| Committee |
PEL/99
|
| DevelopmentNote |
AMD 7533 implements HD 540.2 S1
|
| DocumentType |
Standard
|
| Pages |
86
|
| PublisherName |
British Standards Institution
|
| Status |
Superseded
|
| SupersededBy |
| Standards | Relationship |
| IEC 60071-2:1976 | Identical |
| UNE-EN 62373:2006 | Identical |
| UNE-EN ISO 7823-2:2003 | Identical |
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