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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