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Answer Posted / arun
An inverter is a crkt which only converts DC to sin wave AC. However some commercial dedicated Inverter also provides DC charging voltage for battery backup and uses these backup voltage to convert into AC, thus act as online UPS.
An UPS is consist following mandatory crkt:- Battery backup, rectifier crkt for charging battery and an inverter to convert DC to AC. All mentioned crkt are housed in one casing if the no of battery is less/ small but if the batteries more or size is more, battery bunk can be installed on seperate housing. Eg. 3 phase ups/ more than 1 kva ups
(all voltge value are as per design crkt)
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