IS 4257 : Part 1 : 1981 : Dimensions for Clamping Arrangements for Porcelain Transformer Bushings - Part I : For 12 kV to 36 kV Bushings
| UDC 621.315.626-229.312 : 006.78 | ETD 6 |
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| Reaffirmed 2019 |
1. Scope
1.1 This standard (Part 1) covers the clamping arrangements for bushings of 12 kV to 52 kV rating, to be used with transformers.