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IS SCOTT-T TRANSFORMER A PHASE CONVERTER?

Question asked by df@thedavincigroupllc.com on Oct 8, 2020
Latest reply on Oct 15, 2020 by wwwaller

Downtown Philadelphia is 2-phase power.  We need 3-phase for fire pump.

 

NFPA (2017) 695.3(I) does not permit "phase converters" for fire pumps.

The code book does not define "phase converters".

My reelection is that a phase converter is a mechanical (motor to generator) or electronic (inverter). Both are prone to failure. Usually single phase to 3-phase.

NFPA 695.5 allows transformers to be installed before the controller.

 

Is the Scott-t transformer installed before the pump controller code compliant?

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