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2. Uninterruptible power supply - Wikipedia

   en.wikipedia.org/wiki/Uninterruptible_power_supply

   UPS output waveform (yellow) compared to normal 120 VAC 60 Hz power waveform (violet) The output of some electronic UPSes can have a significant departure from an ideal sinusoidal waveform. This is especially true of inexpensive consumer-grade single-phase units designed for home and office use.

3. APC by Schneider Electric - Wikipedia

   en.wikipedia.org/wiki/APC_by_Schneider_Electric

   APC Smart-UPS is a line of smaller units intended for home and office use, available as floor-standing and rackmount versions. With the exception of the Smart-UPS Online series (SURT and SRT models), Smart-UPS units are line-interactive UPS systems, running their outputs off the inverters only when the grid power is unavailable.

4. United Parcel Service - Wikipedia

   en.wikipedia.org/wiki/United_Parcel_Service

   United Parcel Service, Inc. (UPS) is an American multinational shipping & receiving and supply chain management company founded in 1907. [1] Originally known as the American Messenger Company specializing in telegraphs, UPS has expanded to become a Fortune 500 company [6] and one of the world's largest shipping couriers.

5. UPS Airlines - Wikipedia

   en.wikipedia.org/wiki/UPS_Airlines

   UPS Airlines is a major American cargo airline based in Louisville, Kentucky, US. [8] One of the largest cargo airlines worldwide in terms of freight volume flown, UPS Airlines flies to 815 destinations worldwide. [9] It has been a wholly owned subsidiary of United Parcel Service since its launch in 1988.

6. Power distribution unit - Wikipedia

   en.wikipedia.org/wiki/Power_distribution_unit

   A 10-outlet rack-mount PDU (front), connected to a UPS (bottom unit on right) A temporary PDU, distributing 120 volt AC power at an outdoor event Cabinet PDU with access doors open A power distribution unit ( PDU ) is a device fitted with multiple outputs designed to distribute electric power, especially to racks of computers and networking ...

7. Diesel rotary uninterruptible power supply - Wikipedia

   en.wikipedia.org/wiki/Diesel_rotary...

   Most forms of uninterruptible power supply (UPS) can be either powered by battery or flywheel energy. These are ready for immediate use at the instant that the mains electricity fails, but the relatively small and finite amount of stored energy they contain makes them suitable for short periods of use, typically in the order of a few dozen minutes to a couple of hours depending on the actual load.