60hz transformer on 50 hz
60hz transformer on 50 hz
(OP)
We have one transformer 1000kVA,4.160kV/0.480kV,Delta/Star, 60Hz.If we coonect with 3.3 kV, 50 hz , will that work ? . I need to get 380 volts at secondary.
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60hz transformer on 50 hz
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RE: 60hz transformer on 50 hz
RE: 60hz transformer on 50 hz
(I'm assuming you meant 480 V, not 480 kV)
But you won't have a 1000 kVA transformer any longer.
RE: 60hz transformer on 50 hz
Neil
RE: 60hz transformer on 50 hz
RE: 60hz transformer on 50 hz
That's what they always say....
You should add a new nameplate indicating the reduced kVA rating.
RE: 60hz transformer on 50 hz
The new KVA rating will be 1000 KVA x (3300/4160) = 793 KVA. Call it 790 KVA.
To calculate the new impedance you will have to know the X/R ratio of the transformer. It may be easier to just connect a Variac to the primary, short the secondary and measure the impedance voltage, if you need this information.
Bill
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"Why not the best?"
Jimmy Carter
RE: 60hz transformer on 50 hz
Imagine a case you have a 60 Hz trf with flux density 20 % less than normal.(today's trfs have 1.7 T as B)Then you can connect to 50Hz.You can work on the same kVA rating.But percenatge impedance will come down by 20 % so that voltage dip with loading will be less.
RE: 60hz transformer on 50 hz
Muthu
www.edison.co.in
RE: 60hz transformer on 50 hz
But to reduce the flux density you have to reduce the voltage as described above.
Keith Cress
kcress - http://www.flaminsystems.com
RE: 60hz transformer on 50 hz
In real practical applications, it is always a FAQ with same voltages.Once again sorry for wrong answer.
RE: 60hz transformer on 50 hz
AFAIK, very important only one thing:
U/f=const ( as Dave pointed)
Best Regards.
Slava
RE: 60hz transformer on 50 hz
Bill
--------------------
"Why not the best?"
Jimmy Carter