C57.12.55-1987 (R1998)

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Dry-Type Transformers in Unit Installations, Including Unit Substations – Conformance Standard

This standard describes certain electrical, mechanical, and safety requirements and conformance tests for dry-type distribution and power transformers and for autotransformers. These transformers may either be single-phase or poly-phase, with ventilated, nonventilated or sealed enclosures

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Dry-Type Transformers in Unit Installations, Including Unit Substations – Conformance Standard

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C57.12.55-1987 (R1998)

Dry-Type Transformers in Unit Installations, Including Unit Substations – Conformance Standard

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