Reactor Question

[wbd]

I am most familiar with power system reactors to limit short circuits on a power line. However, I have a question on a reactor in 3 phase circuit. This reactor is on the ac side of a 375kva phase inverter (dc to ac) and is rated at 200 uH, 541A). I suspect that this is there to filter prior to a step up transformer.

Does this reactor provide any short circuit current limiting or is the design such that it is more of a filtering device with limited short circuit limiting ability?

 

[davidbeach]

If it has an impedance it limits downstream fault currents. How much it limits the fault current is determined by how its impedance relates to the rest of the source impedance.

 

[wbd]

Thank you. Is it possible that the short circuit current can be limited to less than the full load amps?

 

[davidbeach]

No, not with anything passive.