BS 5622-1:1979
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.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 Terms, definitions, principles and rules
Hardcopy , PDF
15-03-1996
English
31-01-1979
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Foreword
Cooperating organizations
Chapter I: General considerations
Section one - Scope and object
1. Scope
2. Object
Section two - Definitions
3. Nominal voltage of a three-phase system
4. Highest voltage of a three-phase system
5. Highest voltage for equipment
6. External insulation
7. Internal insulation
8. Indoor external insulation
9. Outdoor external insulation
10. Self-restoring insulation
11. Non-self-restoring insulation
12. Type test
13. Routine test
14. Isolated neutral system
15. Resonant earthed system (system earthed through
an arc-suppression coil)
16. Earthed neutral system
17. Earth fault factor
18. Overvoltage
19. Phase-to-earth per unit overvoltage (p.u.)
20. Phase-to-phase per unit overvoltage (p.u.)
21. Switching overvoltage
22. Lightning overvoltage
23. Statistical switching (lightning) overvoltage
24. Conventional maximum switching (lightning) over-
voltage
25. Temporary overvoltage
26. Statistical switching (lightning) impulse withstand
voltage
27. Conventional switching (lightning) impulse
withstand voltage
28. Rated switching (lightning) impulse withstand
voltage
29. Rated short duration power-frequency withstand
voltage
30. Rated insulation level
31. Statistical safety factor
32. Conventional safety factor
33. Protection level of a protective device
34. Protection factors of a protective device
Section three - Basic principles of insulation
co-ordination
35. Insulation co-ordination
36. Voltage stresses and other factors affecting
insulation
37. Ranges of highest voltages for equipment
38. Delectric tests
38.1 Types of dielectric tests
38.2 Selection of the dielectric tests
39. Co-ordination for voltages under normal operating
conditions and for temporary overvoltages
40. Co-ordination for switching and lightning over-
voltages
40.1 Choice of the procedure
40.2 Statistical procedure
40.3 Conventional procedure
Chapter II: Standard insulation levels for equipment in
Range A
41. General indications
42. Tables of standard insulation levels
Chapter III: Standard insulation levels for equipment in
Range B
43. General indications
44. Table of standard insulation levels
45. Choice of the insulation level
Chapter IV: Standard insulation levels for equipment in
Range C
46. General indications
47. Table of standard insulation levels for highest
voltage range for equipment equal to or greater
than 300 kV
48. Rated switching impulse withstand voltage
49. Rated lightning impulse withstand voltage
Chapter V: General testing procedure
50. General
51. Switching and lightning impulse withstand tests
52. 50% disruptive discharge test
53. Fifteen-impulse withstand test
54. Conventional impulse withstand test
55. Short duration power-frequency voltage withstand
tests
Definitions, basic principles, standard insulation levels and general testing procedures for equipment for 3-phase a.c. systems having a highest voltage for equipment above 1 kV. Except for some definitions, applies only to phase-to-earth insulation.
| Committee |
PEL/99
|
| DocumentType |
Standard
|
| Pages |
24
|
| PublisherName |
British Standards Institution
|
| Status |
Superseded
|
| SupersededBy |
| Standards | Relationship |
| IEC 60071-1:1976 | Identical |
| UNE-EN ISO 14528-1:2000 | Identical |
| BS 7264-1:1990 | Shunt capacitors for a.c. power systems having a rated voltage above 1000 V Specification for performance, testing and use |
| BS 7729:1994 | Specification for instrument transformers. Three-phase voltage transformers for voltage levels having <i>U</i><sub>m</sub> up to 52 kV |
| BS 6904:1987 | Guide for cable connections for gas-insulated metal-enclosed switchgear for rated voltages of 72.5 kV and above |
| BS EN 60265-2:1994 | Specification for high-voltage switches Specification for high-voltage switches. High-voltage switches for rated voltages of 52 kV and above |
| BS 3297-2:1993 | Characteristics of indoor and outdoor post insulators for systems with nominal voltages greater than 1000 V |
| BS 6581:1985 | Specification for common requirements for high-voltage switchgear and controlgear standards |
| BS 5622-2:1979 | Guide for insulation co-ordination Application guide |
| BS EN 60383-2:1995 | Insulators for overhead lines with a nominal voltage above 1000 V Insulator strings and insulator sets for a.c. systems. Definitions, test methods and acceptance criteria |
| BS 7354:1990 | Code of practice for design of high-voltage open-terminal stations |
| BS 5856-1:1980 | Specification for motor starters for voltages above 1 kV a.c. and 1.2 kV d.c. Direct-on-line (full voltage) a.c. starters |
| BS 3297-2:1982 | Post insulators of ceramic material or glass for nominal voltages greater than 1000 V Specification for dimensions |
| EN 60383-2:1995 | Insulators for overhead lines with a nominal voltage above 1 kV - Part 2: Insulator strings and insulator sets for a.c. systems - Definitions, test methods and acceptance criteria |
| BS 7578:1992 | Coupling capacitors and capacitor dividers |
| BS 5463-1:1991 | Specification for high-voltage switches High-voltage switches for rated voltages above 1 kV and less than 52 kV |
| BS 6435:1984 | Specification for unfilled enclosures for the dry termination of HV cables for transformers and reactors |
| BS 2562:1979 | Specification for cable boxes for transformers and reactors |
| IEC 60060-2:2010 | High-voltage test techniques - Part 2: Measuring systems |
| BS 171-1:1978 | Power transformers General |
| IEC 60076-5:2006 | Power transformers - Part 5: Ability to withstand short circuit |
| BS 5622-2:1979 | Guide for insulation co-ordination Application guide |
| IEC 60076-1:2011 | Power transformers - Part 1: General |
| IEC 60060-3:1976 | High-voltage test techniques - Part 3: Measuring devices |
| IEC 60076-2:2011 | Power transformers - Part 2: Temperature rise for liquid-immersed transformers |
| IEC 60186:1987 | Voltage transformers |
| IEC 60060-4:1977 | High-voltage test techniques - Part 4: Application guide for measuring devices |
| BS 171-2:1978 | Power transformers Specification for temperature rise requirements |
| IEC 60060-1:2010 | High-voltage test techniques - Part 1: General definitions and test requirements |
| IEC 60099-1A:1965 | First supplementReplaced by IEC 99-5 |
| BS 171-4:1978 | Power transformers Specification for tappings and connections |
| BS 171-5:1978 | Power transformers Specification for ability to withstand short circuit |
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