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Recent content by bnelson

  1. bnelson

    4" submersible pump motor 3phase 230v 4 pole

    I am wanting to power a POSITIVE DISPLACEMENT progressing cavity helical rotor pump that requires 0.28hp @ 1750rpm. This equates to 0.84 ft-lbs of torque (the torque remains constant regaurdless of rpms). THIS IS NOT A CENTRIFUGAL PUMP!! This is a positive displacement pump meaning that for...
  2. bnelson

    4" submersible pump motor 3phase 230v 4 pole

    I may be wrong, but wouldnt a smaller 4 pole 3 phase ac induction motor running at 60hz consume less power than a 2x larger 2 pole motor running at 30hz with the same load? Also, I will need this motor to start at frequencies of around 2-3 hz (early in the mornings, late afternoons, and when...
  3. bnelson

    4" submersible pump motor 3phase 230v 4 pole

    I have thoroughly reviewed the Franklin web site, and I still can not find any thing but 2 pole 3450 rpm motors. I am looking for a slow speed high torque motor. Yes, I can build my own motor drive controls but I need a motor! A submersible 4" motor with 0.9 ft/lb of continuous torque (0.3...
  4. bnelson

    4" submersible pump motor 3phase 230v 4 pole

    I will be pumping water from a water well...no solids. The motor needs to be 3 phase as stated in the heading. I would really like to find a permanent magnet type of 3 phase motor or a brushless permanent magnet dc motor...but will settle for what ever I can find.
  5. bnelson

    4" submersible pump motor 3phase 230v 4 pole

    Does anyone know who makes a submersible pump motor with these specs; 1/2 hp 230v 1750 rpm 4 pole 4" (like a Franklin 4" sub motor) I am trying to find a motor to operate a down hole progressive cavity pump. All of the pump manufacturers that I have come across only make a 2 pole 3450 rpm...

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