A DC UPS is a power system that provides continuous, conditioned DC secure power to a critical load. It will generally consist of a rectifier (battery charger) supplied from either the single or three phase AC utility supply, a battery and distribution for the clients critical loads. The battery provides the standby power source to provide continuity of supply to the critical load during loss of AC utility power. The battery is ‘floated’ across the output of the rectifier so that it receives recharge current following a utility supply failure and is maintained in a charged condition ready to immediately supply power during a utility supply failure.
Estimated reading time: < 1 min