IS:09921 (PART 3) - 1982; Specification for alternating current disconnectors(Isolators) and earthing switches for voltages above 1 000 V Part 3; Design and construction
IS:09921 (PART 3) - 1982; Specification for alternating current disconnectors(Isolators) and earthing switches for voltages above 1 000 V Part 3; Design and construction
- New Delhi BIS 1982
- 8p
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