IS:3427:1997:IEC:298(1990): A.C.Metal enclosed switchgear & controlgear for rated voltages above 1kv & upto & including 52KV
BIS
IS:3427:1997:IEC:298(1990): A.C.Metal enclosed switchgear & controlgear for rated voltages above 1kv & upto & including 52KV - New Delhi BIS 1997 - 67P
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IS:3427:1997:IEC:298(1990): A.C.Metal enclosed switchgear & controlgear for rated voltages above 1kv & upto & including 52KV - New Delhi BIS 1997 - 67P
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