Question about Powerware PowerRite Plus UPS System

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Ups not switch to battery mode

I have a ups power rite 250va-170w its not swich when the lighs out(110ac) . the ups must be works without power ac two or five minutes. its not doing it. i check the fuse, batterys, the relay and the elevating transformer and its ok. my experience is minimum in ups but I have a lot of knowlege in basic electronic. if somebody can help me with some idea or with the squematic diagram I really apreciate your help. thanks to read my problem.

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This is not from elevating transformer, fuse, batterys. the problem from charger card transitor is fail remove the transitor.

Posted on Oct 06, 2007

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Posted on Jan 02, 2017

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