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backup relay

noun
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Definition of backup relay

: a secondary relay to protect a power system against faults in the event of failure of the primary relay to function as desired

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First Known Use of backup relay

1950, in the meaning defined above

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Time Traveler for backup relay

Time Traveler

The first known use of backup relay was in 1950

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Dictionary Entries Near backup relay

backup light

backup relay

backup signal

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Cite this Entry

“Backup relay.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/backup%20relay. Accessed 27 Jun. 2022.

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