Does a fire pump controller with a reduced-voltage starting rated at 480 V, 3 phases, 60 hz can operate a motor rated at 700 Hp?
Is there any risk on failure of the fire pump performance?
Thanks for your support,
There is one fire pump controller manufacturer that offers listed 700 HP rated fire controllers at 480 V. The other manufacturers requires consulting with factory for offering. As long as the controller is properly selected and the wiring is installed complying with NFPA 70, there shouldn't be any problems.
At 700 HP, I would consider a medium-high voltage (2300 V to 6600 V) controller instead of a low voltage controller.
Thanks a lot Emmanuel!
Do you know if would be any impact or cost benefit for a medium-high voltage? (480 V to 1.2 kV or higher)
Just in terms of cost or controller performance.
A higher voltage means a electric motor demanding less amps. Basically, the electrical bill will be much more cheaper. Also, wiring gauge will be smaller.
A medium-high voltage controller is slightly more expensive than a low voltage equivalent. But then again, is difficult get low voltage controllers over 500 HP unless you order a factory customized one.
I suggest contacting a controller manufacturer such as Firetrol (Vertiv), Metron (Hubbell) or Tornatech. They should give you better information regarding cost or performance.
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