BS 4293:1983
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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Specification for residual current-operated circuit-breakers
Hardcopy , PDF
English
29-07-1983
15-03-1995
Foreword
Committees responsible
Specification
1 Scope
2 Definitions and symbols
3 General
4 Ratings
5 Marking
6 Service conditions
7 Design and construction
8 Tests
9 Condition of the circuit-breaker after test
Appendices
A Preferred ratings for voltage, current, tripping
current and frequency
B Function of the test device
C Transformer balance test
D Application of residual current-operated circuit-
breakers
Tables
1 Table deleted
2 Terminal capacities
3 Test cables
4 High voltage test values
5 Endurance test sequence
6 Prospective current values
7 Voltage ratings
Figures
1 Test circuit for circuit fault current test
2 Earth fault breaking current test
3 Typical circuit diagram for a residual current-
operated circuit-breaker
Requirements for rating, design, construction and testing of residual current operated circuit breakers having a rated voltage not exceeding 660 V, a rated current not exceeding 125 A and a rated frequency not exceeding 400 Hz. Includes circuit breakers utilizing auxiliary sources and circuit breakers with electronic circuitry.
| Committee |
PEL/23/1
|
| DevelopmentNote |
Supersedes 81/31957 DC, 84/24252 DC and BS 4293(1968). (06/2005)
|
| DocumentType |
Standard
|
| Pages |
20
|
| PublisherName |
British Standards Institution
|
| Status |
Superseded
|
| SupersededBy | |
| Supersedes |
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