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SPOOL PROTECTS TRANSFORMERS -  spool developed by Westinghouse research engineers to protect transformers against their own internal electrical failures

SPOOL PROTECTS TRANSFORMERS

E&MP 40.025

Electric Transformers

no date

This is the "spool" developed by Westinghouse research engineers to protect transformers against their own internal electrical failures.

The spool, made of porcelain, is wound with copper wire and coated with zinc oxide.

Photo ## 256543


Original Caption by Science Service
© Westinghouse



National Museum of American History

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