Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

VFD and Motor question?

  1. Nov 1, 2006 #1
    Hi all,

    I have a 75kW high load Ac drive and a 75kW 4 pole 3 phase motor that is supposed to be used for a winch pulling horizontaly.

    The customer connected the Vfd to a 75kW 2 pole 3 phase motor.

    Now the question is will this 2 pole motor be capable to develop enough torque to pull a load of 600 Tons?

    The Torque Loads for a 2 pole is 240Nm and for a 4 pole its 480Nm.

    Do I have to change the motor (back to a 4 pole)?

    Just wanted a second and third opinion from you all.

    Kind Regards,

  2. jcsd
  3. Nov 2, 2006 #2


    User Avatar
    Science Advisor
    Gold Member

    If it is already hooked up, couldn't you just try it?
  4. Nov 2, 2006 #3
    I am like a 1000 miles away from the motor and the drive. Customer called that by mistake they received a 2pole instead of a 4 pole. I was just curious if someone ran into a similar experience. The application is for pulling vesels and loads at the worst case scenario 600 tons.
    As I mentioned earlier will I have enough torque that will sustain that load.

    Any help would be beneficial.

Share this great discussion with others via Reddit, Google+, Twitter, or Facebook