Question regarding sprinkler/fire alarm motor

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JJWalecka

JJWalecka

Senior Member
Location
New England
In the Sprinkler room is a 125 HP 3 phase 460 volt motor. The Full load amperes is 140 Amps. It is fed by a Firetrol FTA100 cabinet. Stated on the Motor are various connection options. I connected it to the Delta Run configuration per request of Forman.
My question is what is PWS. Delta run, Wye Star and PWS where the three connection options. PWS stated 12 to 7, 10 to 8, 11 to 9. 6 and 1 to line one, 4 and 2 to line two, 5 and 3 to line three.
Thank you for your time.

Justin J. Walecka
 
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kiloamp7

Senior Member
Re: Question regarding sprinkler/fire alarm motor

PWS is Part-Winding Start.
This sounds like a 12-lead motor. This type can be connected many different ways.
Sounds like you have the fire pump controller (starter) for it.
The controller will probably dictate how the motor is to be connected.

[ August 26, 2005, 09:40 PM: Message edited by: kiloamp7 ]
 
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