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Dry-Type Transformer Damage Curves

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redtrumpet

redtrumpet

Electrical
Mar 29, 2001
323
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.
 
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I have answered my own question. I see that IEEE has a draft guide for dry-type transformers, C57.12.59.
 
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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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