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What is the difference between online ups and offline ups?
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Answer Posted / engr.faridul alam
In case of ONLINE UPS-
when main supply is there, power is drawn from AC main
source & stored in the battery after conversion. DC power
from battery is converted to AC & supplied to LOAD all the
times (whether there is main power or not). LOAD never draws
power directly from AC mains.
In case of OFFLINE UPS-
When main AC supply is ON, LOAD gets power directly from
main supply & simultaneously battery is being charged from
main source. When there is power failure, main supply
disconnects & within few milliseconds AC supply which is
obtained from battery via converter) connects with LOAD.
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