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Need model number to provide more help.
Here is the company website- http://www.effekta.com.de/epages/63928138.sf/en_GB/?ObjectPath=/Shops/63928138/Categories.

Powerware 9120... | Answered on May 31, 2014

Fault: Low Ouput Voltage

Cause: Surge Taken by load / Short Circuit on load / Fault in inverter

Remedy: Remove load and restart UPS / Try a different load / Repair or swap out

If you need spares or price for repair contact Eaton Power Quality Ltd - the new name for Powerware - 01753 608700

Powerware 9120... | Answered on Apr 08, 2014

You should call your local service rep.

Any standard UPS will fail on Bypass, as the system is designed that way.

Some systems when running will revert to inverter from Bypass but not many.

They usually have an "Economy Mode" setting.

Some UPS systems require a soft or hard reset after any service Involving loss of all power to the electronics, this may be the problem, but it is more likely there is an inverter fault.

Hope this helps,thanks for using FixYa

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Powerware Series... | Answered on Mar 17, 2014

It's unlikely that you will be able to get a new one. The 9330 was discontinued many years ago though Eaton continues to service these models and provide replacement parts/batteries. I suggest that you call 800-356-5794 to see if Eaton has a partner that has any complete systems still in stock or in service inventory. The new UPS units are the 9355 and the 9390: www.eaton.com/9355 and www.eaton.com/9390 These new units are more compact, are more energy efficient and incorporate more advanced technology for monitoring and communication.

Powerware 9330... | Answered on Mar 11, 2014

The Prestige 1250EXT PS2E has a white or red(depending on how old it is) 4 hole rectangular socket on the back bottom left of the UPS when it is lying flat on the bench. The left end terminal is positive and the right end terminal is negative. This female socket(connector) is where the male battery connector from a Prestige battery pack will fit. It can only be connected one way. The DC battery bus is 60 volts nominal.

Powerware Series... | Answered on Feb 28, 2014

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Powerware Series... | Answered on Feb 28, 2014

ups is the new?
if not will have to replace the battery

Powerware 9120... | Answered on Jan 31, 2014

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