BS 4571:1994
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
On-load tap-changers
Hardcopy , PDF
15-03-1998
English
15-03-1994
Section one. General
1. Scope
2. Service conditions
3. Information required with enquiries and orders
Section two. Definitions
4. Definitions relating to on-load tap-changers
(excluding motor-drive mechanisms)
5. Definitions relating to motor-drive mechanisms
Section three. Requirements for on-load tap-changers
6. Rating
7. Design and construction
8. Type tests
9. Routine tests
10. Nameplate
Section four. Requirements for motor-drive mechanisms
for on-load tap-changers
11. Design and construction
12. Type tests
13. Routine tsts
13. Routine tests
14. Nameplate
Appendix A - Supplementary information on switching
duty relating to tap-changers with
resistor transition only
Appendix B - Method of determining the equivalent
temperature of the transition resistor
using power pulse currents
Appendix C - Simulated circuits for service duty and
breaking capacity tests
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