Uniterrutible Power Supply And Operating Method Thereof

Abstract: This uninterruptible power supply comprises: a battery device; an insertion node formed to be electrically connected to a first main power line in a connection device when the connection device and the uninterruptible power supply device are coupled; a power switch for connecting the connection device and the battery device; and a battery management system which measures a first voltage of the first main power line through the connection device, turns on the power switch when the measured first voltage is less than a predetermined threshold value, measures a second voltage of the insertion node when the power switch is in an on state, and turns off the power switch when the measured second voltage is less than a reference voltage.

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