Patent ID: 6288916
Filing Date: 2001-09-11
Classification: H02J,Y02B,Y04S

Abstract:
A UPS system for communications system comprising:an input stage primary and standby AC power signals;an isolation transformer operatively connected to receive the primary and standby AC power signals;an output rectifier operatively connected to the isolation transformer for generating an output DC power signal based on the primary and standby AC power signals;a plurality of output inverters, where each of the output inverters generates an AC power signal based on the output DC power signal;a switch array arranged between the output inverters and one or more loads of the communications system, the switch array comprising a primary switch arranged between each of the output inverters and the load associated therewith, and at least one secondary switch arranged between two of the loads associated with the output inverters; andswitch control means for controlling the primary and secondary switches to connect one or more of the output AC power signals to one or more loads of the communication system.