what is the difference between on line & off line UPS
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Answer Posted / myo
There are two type of ups 1. semi-auto ups which is structured by solid relay .when the ac power supply is out,it change to dc supply and convert the ac out put. It has off period time is 20 milli second.so, this type is called by off line ups. 2, is fully auto ups which has structured by electronic switching device which has not off time period. so, this type is called by online ups.
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