Question about MGE Pulsar MX 4000 (68501) UPS System

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Mge galaxy 4000 - after closing Q4S the static switch will not turn on and the alarm "AC BP SS supply fault" comes up right away. the SS SCR's and gate drive board are ok. where could my problem be?

I can run the ups on inverter but i can not establish static switch bypass. could this be a problem with the main processor board? or a specific board in general?

Posted by Anonymous on

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  • 25 Answers

This is a commun problem with this unit, you need to replace the static switch but it will cost you more than a new system, get rid of it.

Posted on May 19, 2015

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Posted on Jan 02, 2017

  • 16 Answers

SOURCE: I have a MGE Galaxy UPS and it's giving me an intermittent alarm saying "INV. NOT. SYNC./ AC.BP".

Dear Yared,
The alarm is pretty clear about what is going on. It's a syncing issue between the inverter and your bypass supply.

What you can try is to go to the 'Command Screen' of the UPS and select Resynchronize AC BP.

Best regards,


Ron

Posted on Dec 06, 2012

Testimonial: "Thank you so much Ron. The alarm has not occurred again. Yared"

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