Answer Posted / shafi kukkad
for controling we need continue supply in any condition
so,in Electrical Storage only by Using Battery which input
and output is DC. so whn our normal system fail this DC
comes from direct from Battery bank (which chareged by DC
UPS.) no any other arragment required.
if we using AC Controling we used AC UPS syestem, which
done first AC to DC and charged Battery. and whn Fail
normal control supply (which is AC), thn first Battery
output DC convert into AC and give control supply.which is
not reliable and complex arragement.
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