Measuring VA
Measuring VA
(OP)
Hi,
I measured the DC output power of my power supply, so I can find an UPS for my system. How can I find VA? I read that I can multiply my DC output power by 1.4. Can anyone justify this?
Thanks,
Vic
I measured the DC output power of my power supply, so I can find an UPS for my system. How can I find VA? I read that I can multiply my DC output power by 1.4. Can anyone justify this?
Thanks,
Vic





RE: Measuring VA
RE: Measuring VA
RE: Measuring VA
Add up all the voltamp totals NOTE ( 1000 voltamps = 1 KVA ) then divide by 1000 to get to the KVA total. Multiply the KVA total by 1.25% to allow for growth.
Example 120 volts X 15 amps = 1800 voltamps ( 10 units the same )= 18000 V/A
Divide by 1000 = 18 KVA X 1.25 = 22.5 KVA rated UPS.
Any questions let me know
RE: Measuring VA
My suggestion is to reassess the 1.25 multiplier according to nature of the system. Also, either the manufacturer's tech support or literature for the UPS might be useful.