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Dry-Type Transformer Damage Curves

Dry-Type Transformer Damage Curves

Dry-Type Transformer Damage Curves

(OP)
ANSI C37.91 and C57.109 provide through-fault current duration guides for liquid-immersed transformers.  Does anyone know of similar guides for dry-type transformers?  In particular, I am trying to construct a damage curve for a dry-type 950 kVA autotransformer.

RE: Dry-Type Transformer Damage Curves

(OP)
I have answered my own question.  I see that IEEE has a draft guide for dry-type transformers, C57.12.59.

RE: Dry-Type Transformer Damage Curves

Suggestion: These damage curves are also available in various electrical power system analysis software, and can be printed on standard I-t engineering graph papers (K&E).

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