Answer / 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.

Answer / sudha

in on-line ups the inverter will be always ON.the power
flows from supply to load through battery and inverter.but
in off-line ups inverter will be ON only when supply is
cutoff.in this power flows directly to the load through a
seperate static switch..
The inverter in on-line should be high efficient and also
change over time is very less in online ups than offline..

Answer / simon

Online UPS means that there is a in built stabilizer which remains always in on Pos <the over all supply will b stabilized >.Its Opp in Offline.

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