Built in test (BIT) for transformer rectifier unit (TRU) backfeed interlock

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United States of America Patent

PATENT NO 12099096
APP PUB NO 20230251329A1
SERIAL NO

17665867

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Importance

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Abstract

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A method includes performing a test for transformer rectifier unit (TRU) backfeed protection by removing AC power supplied to the TRU but keeping the TRU contactor closed for a first predetermined span of time. The method includes observing the TRU for a second predetermined span of time. The method includes determining if the contactor opens during the second span of time, that a TRU backfeed protection is functional and passes the test, and determining if the contactor does not open during the second span of time, that the TRU backfeed protection has failed the test.

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Patent Owner(s)

Patent OwnerAddress
HAMILTON SUNDSTRAND CORPORATIONONE HAMILTON ROAD WINDSOR LOCKS CT 06096

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Myroth, Jeffrey D Roscoe, US 11 6
Vanevenhoven, Jordan K Rockford, US 19 6

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