Jan 10, 2020
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I want to buy two automatic voltage regulator (AVR) 2.4KVA - 2.4 Kw to protect the following UPS No-Breaks:
One that has the following input specs in it's label: 220V/18A=3960W
Another one that has this input specs in it's label: 120V/24A=2880W

The question is: If I buy an automatic voltage regulator that says 2400W to protect this kind of equipment, will the voltage regulator be enough?
Do I have to get an even bigger regulator or would even a smaller one work.
 

DeauteratedDog

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Dec 11, 2013
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Most quality UPSes have voltage regulation built in - key words to look for are "line interactive" or "double conversion".

I've seen AVR manufacturers suggesting 'protecting' UPSes with a AVRs, but I"ve never seen it done in real life.

What are the maufacturer and model numbers of your UPSes?
 
Jan 10, 2020
4
0
10
0
Most quality UPSes have voltage regulation built in - key words to look for are "line interactive" or "double conversion".

I've seen AVR manufacturers suggesting 'protecting' UPSes with a AVRs, but I"ve never seen it done in real life.

What are the maufacturer and model numbers of your UPSes?
  • Eaton 9130 Modelo PW9139L3000T-XL
  • 120V/24A=2880W
  • Fruk01 Modelo 3000HV
  • 220V/18A=3960W
I know these have a built in regulator... but these UPS are provided by a provider to protect some expensive equipment and they're complaining that their UPS are getting burned because of voltage variations, I just wanna know a bit more about the theory, do 2400 W regulators work with 3960W equipment for example? What is the wattage on a regulator? Is it the output i can manage? Is it what the rgulator itself consumes? If the problem is the electrical installation will installing more regulators be a fix or am I adding even more energy consumption to it?
 

DeauteratedDog

Honorable
Dec 11, 2013
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Ahh,

You actually need an AVR that is a bit larger than the UPS; the AVR has to support the maximum draw from the UPS, which is when it is supplying a full load plus re-charging its batteries after an outage plus some to account for the inefficiency of the UPS.

The UPS manufacturer should be able to tell you the UPS's maximum wattage/VA draw.
 

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