Published:2011/4/11 1:12:00 Author:may | Keyword: single phase conversion type, UPS power supply | From:SeekIC
The main circuit block diagram of setting static switch single phase conversion type UPS power supply
UPS power supply can be divided into conversion type and parallel operation type according to compound mode of inverter. The main circuit block diagram of setting static switch single phase conversion type UPS power supply is shown in the diagram. From the diagram we can know that: when it’s in commercial power and normal work, adopt inverter as main power supply and energy supply to load. In order to let maintenance easy, it set a manual maintenance bypass switch, namely when maintaining, first let bypass switch S close, then let S2, S3 and static switch cut. The system changing to use back up supply to energy supply to load, then UPS system and bypass system separate, at this time can maintain to inverter, static switch. When adopting inverter as main power supply, first close static switch and bypass switch S2, S3, then cut S1.
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