BS 4571:1978
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
Specification for on-load tap-changers
Hardcopy , PDF
15-03-1994
English
31-10-1978
Service conditions, definitions, rating, design and construction, tests, nameplates, requirements for motor-driven mechanisms, supplementary test information.
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