Question about Powerware PW9125 UPS System

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Only "by pass" light on

1.I have UPS - PW9125, ther is only "by pass" light on. what is that mean ?

2.This PW9125 connects to AS400 9406-510, v3.7.
If I disconnect AS400 from this UPS and directly pluge AS400 to wall outlets and start IPL (power on the AS400) without connecting to the UPS, can AS400 come up without any trouble ?

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6ya6ya
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SOURCE:

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Posted on Jan 02, 2017

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SOURCE: No Power Up

The battery charger inside the UPS is faulty so check the transistors including the rectifier on the heat sink. Replace the faulty ones and your UPS will be good. I strongly suggest that you check all the transistors on the PC board just to make sure that the whole board is ok after replacing the transistors

Posted on May 27, 2009

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SOURCE: How to hook up the battery to Best Power UPS Model

You are correct the Positive (+) is the fuse and the other two (orange in my unit) wires both go to the negative (-). Also your battery should be at least 12V 75AH dry cell with a holding voltage of 14V when charged, a standard battery will not work, the unit will boil it dry. This will give a 5 min run time at 75% load (115V 9A continuous).

I changed the units configuration to use a 12V 750AH wet cell by changing its holding voltage to 13V, adjustable on the charging board (the outer most board when the cover is off that is). By doing this the battery costs about $75 not $140 and I get a run time of 4 hours 30 min. at 75% load. My entire office is floating on this unit. Also this unit will require a house current voltage of 105V-125V on a 15A breaker. Yes house current varies all the time by +-10 volts. and unit will use about 10A when running at 75% and charging. The normal output at full load for this unit: 115V 11A. continuous, ( the computers in my office pull 7A to 9A when they are in use, idling at 4A when not in use. So when the power fails I just keep working.

Another thing to note with the new configuration for a wet cell battery, monitoring software will initially show a low run time of 3 to 5 min., but after the unit runs for about a minute on battery the software will adjust to the real run time. So set low battery shutdown for about 2min and the software will work fine.

Ok a little background about the 1.4KVA Battery Backup from Best Power Tech. When I purchased this unit some time ago, it carried a double lifetime warranty good up to $250,000. Not bad for a $2,000 unit. What that meant was not only would the equipment protected by the unit survive a hit, but the unit will also. So far this unit has handled 17 blackouts, over 40,000 line spikes (Voltage greater than 125) and over 3,000 brownouts (Voltage less than 105) and maintained a constant 115 Volt output. (Sub note here the unit beeps while a brownout is in progress, because the battery is being used to help maintain Voltage.) Also this is the same model used at the Kitt Peak Observatory in Arizona. I was encouraged to call and talk to them about the unit, very impressive track record!

Ray
No Budget Productions

Posted on Sep 24, 2011

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Pac makes continous sound


What is the sound? Is the device working normally? Are there any lights or indicators? Do they indicate a fault or error?

A UPS runs on standard 110-120 VAC power. It converts the input power to DC and charges internal batteries, then back to AC. Connected devices actually run on the conditioned 115-120 VAC output. The batteries serve as a short term backup power source.

The electronics in the UPS can produce hum or high pitched tones. The sound should not be annoying. If it is louder than connected equipment (computers) it may indicate a problem. Hum is usually 60 Hz harmonics and difficult to eliminate. This harmonic may be transferred to audio equipment such as speakers or radios. A high pitched tone can be related to the rectifiers for the convertor/invertor. If the tone is loud, it means the rectifiers are drawing a lot of current. This is usually related to bad batteries.

Measure the voltage on the output receptacles. It should be 115-120 VAC. Disconnect everything on the output receptacles. Unplug the UPS from it's power source. If the output power dies within 1 minute, the batteries need to be replaced.

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I have gone through a few UPS, Im lucky to get 3 to 4 minutes if my power is cut.
I think most people plug too much into the UPS sockets.
The Battery backup protected sockets cant take the drain from everything over a prolonged period of time.
The nature of rechargable batteries means that when plugged permanently into a power supply they get damaged (li-on batterys especially).
Im afraid i cant help with this UPS, looks like you need a new 1.
I now only have my PC/Monitor/modem and router plugged into the UPS protected sockets.
Speakers / printer and other stuff are plugged into the unprotected sockets.

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Yes, is the short aswer to your question. The battery should charge as you use the ups. If they don't then its likely the battery/s have failed. Lead acid batteries do not like being left discharged for any length of time. In a motor vehicle the battery gets a bit of shaking around, but in an ups they don't. If not used and left discharged, the plates quickly sulfate up reducing the efficiency to nearly zero. Test and replace any battery that cannot support a test load, such as a bright12v light or a 12v soldering iron connected to it. The length of time required to charge the battery/s depends on their capacity (in ampere/hours) and the charging rate. A 14.4 amp/hr battery charged at say 1 ampere will take 14-1/2hrs to charge.(just as a sample)

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1 Answer

I login with phone number and pass word i no ther


You can try two different solutions:
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If you found this information helpful, please give me a big thumbs up when you rate my answer. Thanks.

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1 Answer

Hi!! Thank you for your time! We're doing our


A few questions. Is it an stand alone one? seems to me a 500VA rated UPS, for light loads only.

Some stand alone common problem.

1. Battery for replacement
2. Fuse busted
3. Faulty relay

If repair and battery replacement outweighs the new one or got a small difference. Its better to have a new UPS unit.

Hope this helps

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The "pass-through" jacks are outputs that allow you to send the same input to another amp.

Each set of the remaining RCA's handles a pair of channels (2 speakers).

You want a 4-channel LOC like the one shown here:

http://www.crutchfield.com/p_142SLC4/Scosche-SLC4.html?tp=2001

Connect the speaker wires from the factory receiver to the input screw terminals (marked A1 through A8) and run 2 pairs of RCA cables to the 2 sets of inputs on the 400.4.

Hope this helps.

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This is the battery you need to replace http://www.batterywholesale.com/battery-store/proddetail.html?prodID=619
Ther are a few places to get one

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