Question about Eaton Powerware 9155 - Power Array - 10.8 KW - 12000 VA (T27347) Category: Power Arrays UPS System

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Eaton powerware 9355-8-n-15-32x9ah-M wen starting the ups sometimes give me balancer relay fail but the main fail is DC charger fail

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Posted on Jan 02, 2017

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SOURCE: Battery Packs for Powerware 9355 UPS

If you battery packs are all at 130volts DC, then all of the packs will have become dead, and the batteries are not recoverable. Your battery DC bus voltage on a Powerware 9355 20 to 40kVA rated UPS is nominal 432 volts DC - 36 batteries in series in each string at 12 volts DC per battery. If batteries go below 10.5 volts DC each, or 378 volts DC bus voltage, no amount of charging will recover these batteries. You should not be recycling the DC battery breaker, unless you felt the battery breaker was faulty. The UPS would have given you an alarm message of either battery breaker Off, Charger Failure, or Low DC Bus Voltage long before the these batteries failed.
The battery test will not proceed if the batteries are dead.

Posted on Feb 11, 2011

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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
You can view the manual here in the docmentation tab:

Posted on May 16, 2011

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SOURCE: If Eaton APS6-059 UPS is connected to 48v DC(Car batteries in series eg.) can the 220v AC outlets power electrical appliances of suitable rating ?

What is the rating on the output of the UPS? kVA? Output Amps Max?

Posted on Sep 12, 2012

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1 Answer

DC Bus Fault Error

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Balancer relay failed

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We have a powerware UPSI 833 SERIAL NUMBER QFE 2 1k01541 Do you have a service engineer in Ireland to service this unit as we have 3 on site .If you could come back to me on this it would be great Tommy

Try contacting anyone of them.
Eaton Power Quality Ltd
Tech & Service Support AC UPS Systems

T +44 (0) 1753 608 700
221 Dover Road
Slough, Berkshire
United Kingdom
Tech & Service Support DC Systems and ePDU
DC T +44 (0) 1243 810 500
ePDU +44(0) 1243 810 654
Durban Road
Bognor Regis, West Sussex
PO22 9QT
United Kingdom
Tech & Service Support Switch gear
Eaton Electric Limited
Customer Service Centre
Grimshaw Lane
Manchester (UK)
M24 1GQ
Tel: +44 (0) 8700 545 333
Fax: +44 (0) 8700 540 333

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Need a part number for the fan. best ferrups 5.3kva

Suggest you give Eaton a call. They purchashed Powerware/Best Power and still sell and service the FERRUPS:
Toll Free: 1 800 356 5737
E-mail (Hardware):

Mar 07, 2011 | Powerware FerrUPS 5.3KVA (fj340aa0a0a0a0a)...

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Replaced old 12 V, 33 AH batteries for Ferrups 3.1 UPS. Within a min from starting the UPS, those two huge capacitors (situated on the Top Rear, when you remove the Cover, furthest when you see from the...

Mike Decamp is clueless. That is not a answer. The UPS has large DC capacitors. These do go bad over time. The capacitors are required to maintain a good DC Buss and helps in assisting when putting the UPS in bypass and back online. You can not turn on the inverter with out precharging the capacitors. Get the part numbers of the caps and replace. Make sure UPS and batteries are off or you will get shocked.

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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

Jan 05, 2011 | Eaton Powerware 9135 UPS (700465446) UPS...

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