An online UPS is designed and developed with the sole aim of
offering a constant power supply without any interruptions. An
online UPS works on the principle of double conversion. In this
process, the incoming AC power is first converted into DC and
then again into AC before being supplied to the equipment.
One of the most important advantages of an online UPS system is
that it offers zero transfer time. In this context, zero transfer time
means that there is absolutely no time taken for the power supply