IS: 2544 - 1963 (with amendment no.3 - 1966); Specification for porcelain post insulators (3.3kvand above)
IS: 2544 - 1963 (with amendment no.3 - 1966); Specification for porcelain post insulators (3.3kvand above)
- New Delhi BIS 1964
- 27+1p
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