uninterruptible power supply

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English

A UPS in front and rear view.

Pronunciation

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Noun

uninterruptible power supply (plural uninterruptible power supplies)

  1. (electrical engineering) A device or system that almost instantaneously provides emergency power in the case that main power fails.
    • 2009, Geoff Craighead, High-Rise Security and Fire Life Safety, page 357:
      Examples of emergency power supplies include a storage battery or group of batteries, a generator driven by a fuel-supplied prime mover, or an uninterruptible power supply (UPS) […].
    • 2018 June 24, Gloucester Advocate:
      This upgrade comes after the installation of a $50,000 uninterruptible power supply system to compliment the facilities independent power supply.

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