Sizing Primary Cables of Excitation Transformer
Sizing Primary Cables of Excitation Transformer
(OP)
Good Afternoon.
I´m making a study about the sizing of cables for excitation transformer connection (shunt system) in a synchronous machine.
By the excitation transformer circuit normally flows very low nominal currents, but the short-circuit level is too high.
So, the main sizing criteria is short-circuit level.
Which short-circuit duration can I consider?
And about Protection CT? The short-circuit criteria recommend high nominal values...
Thanks.
I´m making a study about the sizing of cables for excitation transformer connection (shunt system) in a synchronous machine.
By the excitation transformer circuit normally flows very low nominal currents, but the short-circuit level is too high.
So, the main sizing criteria is short-circuit level.
Which short-circuit duration can I consider?
And about Protection CT? The short-circuit criteria recommend high nominal values...
Thanks.





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