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UPS offline voltage

S

synapse02

Senior member
Just picked up a UPS and the offline voltage is about 90volts. I havent plugged anything into it yet. Shouldnt the offline voltage be higher? Or is that normal.

Jason
 
It has charged over night. I am checking the voltage with a volt meter or a multimeter. 90 volts seems way too low. Can some please.. check the offline voltage on a UPS.

Thanks
Jason
 
I just did that. I measured 124V with a digital meter.
I measured the voltage while the computer was on. I have never measured the output voltage of an unloaded UPS.
Can you connect a lamp (60W) to it and measure the voltage?
Please be careful when you do that.
 
Thanks for the help. Did it measure 124V with the UPS unplugged? I just plugged a lamp into it and did that exact test, it is 90V with and without a load. If yours was pushing 124V unplugged I'll deffinitely be taking this one back.

Jason
 
I disconnected the input of the UPS from the line and had the PC and monitor running off of the UPS and measured 124V at the output of the UPS.

Can you do one more measurement?

Measure the line voltage. May be it is your meter that is faulty. If it also measures the line voltage to be around 90V, something is wrong with the meter?
 
I don't know if this has to do with the waveform at the output not being a sinewave!

What brand is it?

You may want to take it back.
 
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