IS: 1180 (Part 1) - 1989; Outdoor type three-phase distribution transformers upto and including 100kVA 11kV - Specification Part 1 Non-sealed type

IS: 1180 (Part 1) - 1989; Outdoor type three-phase distribution transformers upto and including 100kVA 11kV - Specification Part 1 Non-sealed type - New Delhi BIS 1990 - 7p

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