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ITFrequently Asked Questions · UPS
What devices can I back up with a UPS?
UPS units support home, office and industrial equipment (computers, router-modems) as well as critical loads (medical equipment, laboratories, data centers).
Almost any electronic device can be supported by a UPS, provided the unit has been chosen correctly for the type and power of the load. Selection starts from the real consumption in W of each device, plus a safety margin, and from the runtime you need.
Loads with a high inrush current, such as motors, pumps and refrigerator or air-conditioner compressors, need particular care. At start-up they draw several times their normal running current, so they require a considerably larger UPS, usually an OnLine one. Laser printers and photocopiers, because of their fuser unit, are best kept off the battery-backed outlets. Appliances with heating elements, such as heaters, kettles and irons, make no sense on a UPS.
For home and office equipment, such as a computer, router, NAS, cameras or an alarm, a small or medium UPS is usually enough. For medical equipment, laboratories and data centres the design must also take into account the specific requirements of each site.
A common mistake is counting only the VA rating and forgetting the inrush current or the power factor. If you are unsure, ask for help with sizing before you buy.
