IS:3427 - 1969 (with Amendment Nos. 1 & 2) : Specification for Metal-Enclosed Switchgear and Controlgear for Voltages above 1000V but not exceeding 11000 V
IS:3427 - 1969 (with Amendment Nos. 1 & 2) : Specification for Metal-Enclosed Switchgear and Controlgear for Voltages above 1000V but not exceeding 11000 V
- New Delhi BIS 1969
- 24p
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