IEEE 21-1976
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
06-17-1992
English
11-30-1976
Covers outdoor power class apparatus bushings with basic impulse insulation levels 110 kV and above for components of oil filled transformers, reactors and oil circuit breakers.
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