20 Most Recent Powerware PW9150 12.5KVA/8.75KW (pf1221114ue0010) UPS System Questions & Answers

It is most likely the batteries

Powerware PW9150... | Answered on Aug 24, 2011

Try this link to the documentation for the 9150: http://powerquality.eaton.com/Products-services/legacy/9150-info.asp
Eaton bought Powerware 6 years ago but retained their service support personnel.so they can also help you.
Toll Free: 1 800 843 9433
International: +1 919 871 1800
E-mail: LargeUPSTS@Eaton.com

Powerware PW9150... | Answered on Nov 15, 2010

I think the existing battery will be a 12V 26Ah type. You can use any brand 12V/26Ah batteries. Make sure you are using the same number and you connect them in the exact manner and polarity as the old battrey bank.

Powerware PW9150... | Answered on May 24, 2010

Check with a company on line. Battery warehouse

Powerware PW9150... | Answered on Mar 30, 2010

If the load is dropped then there is a serious fault with the ups, even if the inverter fails, it should go to bypass and not drop the load.

Sound like a control fault, I suggest you need a ups tech.

This equipment has many dangerous parts inside. Batteries are always live and very dangerous. The boards are stuffed the surface mount components.

You need an approved service agent, who should be able to help

Powerware PW9150... | Answered on Sep 24, 2009

fixya has nothing but advice
go google and type the details in the search box

Powerware... | Answered on Oct 25, 2016

can blow diodes in the alternator and ECM

Powerware... | Answered on Mar 22, 2016

sorry but reading this question tells me nothing MOSFET BRUST

Powerware... | Answered on Aug 20, 2015

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