Question about Eaton Powerware® 9120 UPS System

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I have a powerware 9120-2000VA that displays utility fail. what components do i need to replace?

My Powerware 9120-2000VA encounters Utility Fail.

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4 Suggested Answers

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Posted on Jan 02, 2017

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pravinbhavsa
  • 348 Answers

SOURCE: we re having problem with the 9120 powerwere

open the ups and check whether the battery faulty or not if faulty replace it, if ok then check mosfet or IGBT used in inverter section if faulty replace it problem wil be solved

Posted on Mar 10, 2010

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  • 45 Answers

SOURCE: is the fuse in a powerware 9135 user replaceble

There are numerous fuses (rectifier, inverter, charger, battery) on the 9135 that are located internal to the unit and not readily accessible to the user. Generally a blown fuse is accompanied by another component failure which caused the fuse to blow in the first place. As a result, additional troubleshooting and testing is usually required to identify the root cause of the failure. This of course leads to soliciting the services of a technician who has access to the schematics, test equipment, and parts to initiate a repair. Without the schematics, it's like working in the dark. For complete support, please contact Eaton (Eaton bought Powerware so now it's the Eaton 9135):

Toll Free: 1 800 356 5737
E-mail: SinglePhaseTS@eaton.com

www.eaton.com/9135

Posted on Jan 06, 2011

  • 45 Answers

SOURCE: i have powerware 935515kva ups.The

I suggest you give Eaton a call:
Toll Free: 1 800 843 9433
International: +1 919 871 1800
E-mail: LargeUPSTS@Eaton.com
You can view the manual here in the docmentation tab: http://powerquality.eaton.com/products-services/backup-power-ups/9355.aspx?cx=3

Posted on May 16, 2011

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1 Answer

It turn on and give utility failure fault , Out put off


Remove all load.
Turn off UPS.
Start UPS.
If fail remains, check the fuses and battery.

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Unless new and hardly used - check the internal batteries. They might be worn out and fail to hold a proper charge. This to be able to deliver power when AC mains cuts out.

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We re having problem with the 9120 powerwere UPS...no backup when the utility (commercial power ) is not available...the UPS shut down, and all LEDs went off.


open the ups and check whether the battery faulty or not if faulty replace it, if ok then check mosfet or IGBT used in inverter section if faulty replace it problem wil be solved

Mar 09, 2010 | Eaton Powerware® 9120 UPS System

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Powerware 9125 power problems


Most modern ups units will not start at all without the batt, so disconnect the extra packs beg, borrow some new or old good batt blocs same spec as the original internal ones, as this is just a test any set of batts that is just ok will do.

fit them to the ups unit and see if it will start. if it will then you will need to replace all the batt blocs in the whole system.

If it does not start then the ups is faulty.

If you are not happy fitting /working with batteries then get a tech to do this work for you, batteries are very dangerous, they are always live and need to be handled with care at all times.

Hope this helps, thanks for asking FixYa

Jul 28, 2009 | Eaton Powerware® 9125 UPS System

1 Answer

Utility Fail


mother board gone bad

Apr 09, 2009 | Powerware 9120 UPS System

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