Question about APC BackUPS CS Battery Backup System SixOutlet 500 VoltAmps (APWBK500BK5001) UPS System

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Low output voltage APC cs 500

UPS is of 220 VAC. But when its battery takes over on power outage, it outputs only 165 - 170 VAC. Battery is new. Resetting has not worked. May be some component has weakened or failed. Help requested to rectify the fault pl.

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Some units do not give a sine wave voltage when working on batteries, and not any meter can measure the correct voltage (you will need a "true RMS meter". Connect a a light bulb 100 or 200 watts, if it lights giving a good light, your UPS is OK.

Posted on Nov 28, 2013

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Test with Voltmeter True RMS

Posted on Nov 20, 2013

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Posted on Jan 02, 2017

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SOURCE: apc ups flashes red light to replace battery, but battery is new

i think by replacing the battery has not been the solution to the problem

u need to check the battery charging voltage when turned ON with main electricity, if no voltage present from charger, there is no question of battery getting charged and also once the battery is down with charge it may not re charge hence the indicator and alarm.
recomended to nearest service centre

Posted on Sep 13, 2008

  • 55 Answers

SOURCE: APC Smart UPS 1500 will not start.

It could be that the cable to the front-panel got damaged during the battery replacement.  After all these years you would think APC would improve that aspect of their design.  All I can suggest is inspecting the cable and where it connects to the front panel.

Posted on Apr 26, 2009

  • 28 Answers

SOURCE: green light flashes with a constant buzzing sound

It sounds like you need a new battery. If the APC is more than 3 years old, that is likely the problem. You can get a new battery from http://www.batteryinternational.com/apc-backups-es-be500u-ups-battery-ups-batteries-f2.html

Posted on Jun 23, 2009

jvpacoin
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SOURCE: Overload light in APC RS 800 UPS

it seems that the inverter circuit of your UPS is dying. the solution here is you have to open up the UPS and check the inverter circuit. to make easier, check the power mosfet if its leaking.

Posted on Aug 14, 2009

  • 1 Answer

SOURCE: I have an APC BE350U battery backup. When power

There are 6 outlets on that unit. Only 3 of them have battery backup. The other 3 are surge protection only. Are you sure of which outlets you are using?

Posted on Jun 20, 2010

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1 Answer

Low voltage output


disconnect the input cable let UPS run on battery and check the output voltage with a true RMS voltmeter (fluke 87) if input cable is connected to main power you get the same on the output
input = output

Feb 19, 2015 | APC Back-UPS RS Battery Backup System, 340...

1 Answer

Low voltage output 170 volts


Check your voltage meter, so it measures correctly, probably generate your UPS is not pure sine wave, but a modified sine, then the simple measuring devices to display the wrong value.

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1 Answer

How can output voltage be adjusted when on battery power?


1. check either it is overloaded or the batteries are weak . check battery voltage to

May 10, 2014 | APC 620VA/390W Input 230V/Output 230V...

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My APC cs 650 is dead


hi
try replacing the battery, if it does not at all. have to buy a new UPS because the control board is damage

Mar 18, 2014 | APC Computers & Internet

1 Answer

I have a UPS 1000 VA with 12 V X 2 Battery, Problems: when we on ups input 200 V without load, it gives output 210 V. when load it gives 230 V on electricity. When Electricity cut off it gives 250 V. When...


arif qc, Are you using a DMM that is or will make "true RMS" measurements or is it an "average responding" type of voltmeter? Is this APC ups designed for 120 vac input/output or is this unit a 220 vac input/output type? Use only a "TRUE RMS" type DMM to make your measurements!!! I believe if you visit Tripp-Lite site, you will find a tutorial video clip of why you should use a true-rms meter to make measurements of output voltages. 12fixlouie

Sep 07, 2010 | APC Smart-UPS 1000VA UPS System

2 Answers

Beeping


These UPS systems do a self check everytime you press the power button. If the voltage in the battery is too low, you'll get a long drawn out beep. A new battery should solve that problem and it is even economical with a unit this size. Here's a link: http://batteryinternational.com/apc-backups-es-be350es-ups-battery-ups-batteries-f1.html

Simply remove the single phillips screw on the bottom of the unit and remove the battery cover. Replace battery and that's it. Very simple to do.

Apr 14, 2010 | APC Back-UPS ES 350 - UPS ( external ) -...

1 Answer

UPS shuts off intermittently and beeps


More than likely it just needs a new battery. If the power is sagging (called a brownout) the UPS is trying to switch over to the battery to keep the power consistent. The beeping is probably a code that indicates there is an issue with low voltage on the battery. New batteries are around $20-25. Here's a link to the replacement battery: http://batteryinternational.com/apc-backups-es-be350es-ups-battery-ups-batteries-f1.html

Hope that helps.

Jan 21, 2010 | APC Back-UPS ES 350 - UPS ( external ) -...

1 Answer

After a power outage my apc has this clicking sound. every 4 seconds or so it sounds like it clicks and then a slightly different click 4 seconds later. However, when everything is powered up it doesn't...


I found this on the APC website;
Question: What would cause a Back-UPS Pro, a Back-UPS Pro USB, a Back-UPS RS, a Back-UPS CS, a Back-UPS LS, or A Back-UPS XS to beep once every 5 seconds with no output power?
Answer: One beep every 5 seconds is an indication that the UPS has entered what is called "Low Voltage Sleepmode".
The Back-UPS product has transferred to battery power due to a low voltage condition at the wall. The Back-UPS has remained Onbattery until its runtime was totally exhausted, however, there was still enough voltage present at the wall to trickle charge the battery.

This is considered to be a normal operating state. When the voltage returns to normal the Back-UPS will wake up and restore power to the battery outlets.

Nov 02, 2009 | APC Back-UPS ES 350 - UPS ( external ) -...

2 Answers

The battery backup side of the APC does not work how can I fix this?


How old is unit? UPS is a Battery that is charged from power outlet.It maintains voltage when computers are plug into it so fluctuations in current don't spike or wane.On a Power Failure the UPS supplies all the power by using the battery and an inverter.If your units batteries are not charging you need to replace them.In most cases it is not cost effective.Do some more test before you replace it.Good Luck.

Sep 08, 2009 | APC Back-UPS® CS 500 UPS System

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