uninterruptible power supply



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, p. 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, Gloucester Advocate, 24 June:
      This upgrade comes after the installation of a $50,000 uninterruptible power supply system to compliment the facilities independent power supply.