IF THE OUTPUT OF A 100KVA, 415V GENERATOR IS STEPPED UP TO 11KV WITH A 500KVA

IF THE OUTPUT OF A 100KVA, 415V GENERATOR IS STEPPED UP TO
11KV WITH A 500KVA TRANSFORMER,CAN THE TRANSFORMER BE
LOADED ABOVE THE SOURCE GENERATOR RATING?

Question Posted / decibel

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IF THE OUTPUT OF A 100KVA, 415V GENERATOR IS STEPPED UP TO 11KV WITH A 500KVA TRANSFORMER,CAN THE ..

Answer / k.prakashchandra

No. Tranformer is for only stepping up the voltage, not the
power which should not be allowed to rise above the
capacity of the generator

Is This Answer Correct ?

6 Yes

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IF THE OUTPUT OF A 100KVA, 415V GENERATOR IS STEPPED UP TO 11KV WITH A 500KVA TRANSFORMER,CAN THE ..

Answer / hareesh k.s.

No.
The source generator rating is 100X1000VA/415X1.73=133A

therefore the maximum load that can bear by the source of
power supply is 133A.

but the tranformer maximum output
current=500KVA/11KVX1.73=26A.
therfore the maximum load rating that can bear by the
trasformer is 26A.

ie.500KVA,11KV transformer can loaded upto only 26A.

but the maximum source KVA is 100KVA
therefore the maximum output load rating of
tranformer=100KVA/1.173X11KV=5.25A

so the conclusion is in this case the tranformer can be
loaded upto 5.25A(11KV).

Is This Answer Correct ?

6 Yes

1 No

IF THE OUTPUT OF A 100KVA, 415V GENERATOR IS STEPPED UP TO 11KV WITH A 500KVA TRANSFORMER,CAN THE ..

Answer / karthik.j

No. Tranformer is for only stepping up the voltage, not the
power which should not be allowed to rise above the
capacity of the generator

Is This Answer Correct ?

3 Yes

1 No

IF THE OUTPUT OF A 100KVA, 415V GENERATOR IS STEPPED UP TO 11KV WITH A 500KVA TRANSFORMER,CAN THE ..

Answer / ben

firstly a 100kVA 3-phase WYE generator will only produce 100kVA of power, this will also more than likely be rated at 0.8 power factor meaning the true power you will receive will only be 80kW.

if you are using a 500kVA, 415V/11000V step-up transformer you will probably find that the 100kVA generator is not large enough to saturate the transformers magnetisation current. i would have to say you need either a larger generator or a smaller transformer to suit your site needs.

In answer to your questions: No it can not.

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