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transformer rating

transformer rating

transformer rating

(OP)
can anyone confirm for me that a 1600kva three phase transformer is rated for  2228A at 415v
thanks

RE: transformer rating

I get 2226 Amps I wouldn't worry about the difference. I used the calculator generated value for root 3. You probably used 1.73
yours

RE: transformer rating

Transformer rated power = 1600 kVA
Transformer rated voltage = 415 V
Then transformer rated current = 1600000/(1.73*415)=2225.9A

1.73=SQRT (3)

RE: transformer rating

Check the transformer rating plate.
Transformers connected to 415V buses usually have a no-load secondary terminal voltage at centre tap position of 433V.
ie. Transf secondary current rating I LV = 1.6*10^6/( sqrt(3)*433 ) = 2133 A

RE: transformer rating

As mnewman says, the current rating is based on the no-load voltage. You need to check the no-load voltage quoted on the transformer rating plate. Typically this will be 433 V so I would agree with mnewmans value of 2133 Amps as the rated current of this winding.

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