Control

Excitation Transformer Sizing: Short Circuit Current

M

Thread Starter

Mike

Hello,

Does an auxiliary line feed's short circuit current have any effect on a transformer's size (interms of KVA)?

If so can you please explain how to go about sizing the transformer?

Thanks in advance for the response.
 
P

PhilCorso

Mike... the answer to your question is no! That is, a transformer's kVA capacity is determined by the load it has to carry.

A transformer's primary-winding is designed to withstand the effects of a short-circuit on its secondary terminals. This is why transformers have a minimums SC-impedance value!

Regards, Phil Corso
 
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