Kva

[sparkyblue1]

Am i right in thinking a 600 KVA 3 phase supply is approx 1400 amps per phase.

Brains gone

 

[stef]

I'll get 850 amps

 

[sparkyblue1]

i got I=KVA*100/1.73*415 think you multiplied by 230

 

[ashrow]

what your power factor and the voltage you are using

 

[stef]

i got I=KVA*100/1.73*415 think you multiplied by 230

I did 600000 / (1.7 * 415)

 

[sparkyblue1]

not sure on power value factor, just trying to establish what supply is in a factory i'm working in, it is supposed to be 600 KVA

 

[sparkyblue1]

SO I GET 600000/1.73*415=1439 AMPS but is that per phase or split between three

 

[44ALLAN]

833A/phase @415volt ..................long time since I was at college though so might be totally wrong lol

 

[telectrix]

836A at 415V without any corrections for pf etc. according to my slide rule.

 

[44ALLAN]

836A at 415V without any corrections for pf etc. according to my slide rule.

I worked it out in my head:wink5:

 

[johnboy6083]

kVA has the power factor already taken into account.

 

[ashrow]

i was jesting
I was seeing if it was another homework question being posted

 

[Knobhead]

kVA has the power factor already taken into account.

Does it?

 

[Knobhead]

Well I did work it out in my head 800.2A @433V. The voltage which 99% of transformers work on.
It's also the reason the reg's are wrong!

 

[Spudnik]

OP.

Please keep to one thread, however long it takes your get answers.

Thanks.