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  • Old 3 phase motor

    im considering this old 3 phase motor for my wood lathe.



    of course i'll be looking for a vfd for it. its hard to read the specs so im waiting for a reply from the seller.
    looks like 50 cycle, 1.2 amps, 0.75 hp, 1425 rpm but i cant decipher the voltage
    advice re a vfd would be appreciated
    my shop is a beaver lodge
    steve, sarnia, ont




    1940's Craftmaster Lathe

    https://www.facebook.com/artistryinwoodca/
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  • #2

    Re: Old 3 phase motor

    My guess is 400v. It may be a bit involved (beyond the VFD) to get that one going.

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    • #3

      Re: Old 3 phase motor

      Hi, I would expect that it would be a 380 volt motor.

      Not worth keeping in my opinion, look for a modern 208 volt motor if you want a 3 phase machine.....Rod.
      Work is the curse of the riding class.

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      • #4

        Re: Old 3 phase motor

        Lovely old motor.

        It says 400v as far as I can tell. 50hz, 400v = standard 3-phase voltage everywhere - except Nth America .

        A VFD would supply the hertz you want - but the voltage might be a bit more tricky. Then there's the consideration that some older motors don't like VFDs.

        Good luck with your decision.

        Cheers, Vann.
        Proud member of the Wadkin Blockhead Club.

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        • #5

          Re: Old 3 phase motor

          yes the seller told me its 400 V
          my shop is a beaver lodge
          steve, sarnia, ont




          1940's Craftmaster Lathe

          https://www.facebook.com/artistryinwoodca/

          Comment


          • #6

            Re: Old 3 phase motor

            The industrial 380 Volt is very standard 3 PH voltage in EU and with 50 cycles, makes for 1440 RPM, though that will becomes 1625 RPM over here with our 60 cycles, being an industrial motor it should be able to run for a long time yet.

            Using a VFD would have to be able to ged you the 380 Voltage, not as common over here, but it should be possible IMO.

            3 PH motors are not expensive, and using a more common 220V 3 PH motor from here might well be an easier way to go.
            Last edited by Leo Van Der Loo; 11-11-2019, 01:26 AM.

            Have fun and take care
            Leo Van Der Loo

            Comment

            • Thread Continues Below...

            • #7

              Re: Old 3 phase motor

              I agree anything is possible. But I wouldn’t touch a 400 V motor (or a 460 V motor at 60 Hz) with a 10 foot pole. Now, if it is dual voltage, that’s a different ballpark altogether. You’d have to take apart the pecker head and possibly the back windings. This three-quarter horsepower motor, site unseen I would offer less than $25.
              Last edited by Matt Matt; 11-11-2019, 01:34 AM.
              For every action there is an equal and opposite reaction.
              Sir Isaac Newton.

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              • #8

                Re: Old 3 phase motor

                it was just a neat looking old motor!! my shop is full of them(single phase) especially with that cast iron centre section.
                seller said it came off a lathe
                but if the 400 volt makes impractical i'll have to pass on it
                my shop is a beaver lodge
                steve, sarnia, ont




                1940's Craftmaster Lathe

                https://www.facebook.com/artistryinwoodca/

                Comment


                • #9

                  Re: Old 3 phase motor

                  It is small enough to run on a vfd and a control transformer (1kva) It is a 5$ motor.

                  Comment


                  • #10

                    Re: Old 3 phase motor

                    Originally posted by iamtooler View Post
                    It is small enough to run on a vfd and a control transformer (1kva) It is a 5$ motor.
                    haha, he's asking $50 but i wasnt prepared to spend that!
                    my shop is a beaver lodge
                    steve, sarnia, ont




                    1940's Craftmaster Lathe

                    https://www.facebook.com/artistryinwoodca/

                    Comment

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