What is an Off-Line UPS?
Off-line UPS are often referred to as Standby UPS are the most basic UPS models and are designed for use in small, non-critical applications that require protection against momentary loss of power. Typically they are used to protect workstations, terminals, or equipment below 1 kVA.
An Of-Line UPS is essentially a break/fix type of Uninterruptible Power Supply. The most basic type of UPS topology, standby resorts to battery backup power in the event of voltage sags, surges, or blackouts. If incoming utility power wavers from a safe voltage level, the UPS automatically switches to DC battery power, before converting to AC power to run connected equipment. These systems typically consist of a battery to provide a short-term power supply, a rectifier or charge to maintain voltage, an inverter to provide power during normal load, and a static switch to automatically transfer load between utility and the inverter. Suited for consumer electronics, home computers, and security systems.
Typical internal battery autonomy with Offline UPS lasts for just a few minutes and there doesn’t tend to be the option to add external battery packs for additional autonomy.
Most Offline UPS, like the APC Back UPS range or the Riello Netpower, offer simple plug and play installation and are compact in design, meaning they can fit easily in any SoHo (small office/home office) setting.
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