How many amps per phase provide 60 KVA UPS with 400 volts?

Answer 1

You have a 3-phase UPS consuming 60kVA at 400V,

So, to determine the current per phase, apply the following formula:

I= S / (U x sqrt[3]) where S is apparent power (in VA)

U is line voltage (in V)

I is current per phase (in A)

thus, this gives I= 60 000/ (400 x sqrt[3])

I=86.6 amps

Answer 2

The ampere is used to measure current, whereas the volt ampere (V.A not va!) is used to measure apparent power. These are two completely different quantities, so you cannot ask how many amperes are there in 60 kV.A any more than asking how many kilometres there are in a litre.

On the other hand, since volt amperes is the product of current and voltage, if you should know the voltage applied to a 60 kV.A load, then you can determine the resulting load current by dividing the apparent power of the load by that voltage. But the load's apparent power and the resulting current remain two completely different quantities.