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What is the difference between online ups and offline ups?

Answer Posted / vinay srivastav

On line UPS gives out put through inverter card out put at
all time AC supply on or off. That means UPS always on and
gives AC out put which is converted from DC out put of
Battery voltage. But the Battery life in this type of UPS is
low as compare to that of offline UPS.

But offline UPS gives out put only when commercial supply is
off. commercial supply directly given to the load and when
commercial supply fails UPS feeds the supply to load. That
means UPS is not connected to load at all the time. In this
case battery is not connected all the time so the battery
life is more as compare to online UPS

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