Shaper 415v - 240v
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  1. #1
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    Default Shaper 415v - 240v

    I recently purchased a 16" demco excelsior shaper and has a 1.5kw/2hp 415V electric motor on it.
    Am I better off simply swapping to a 240v motor or is it possible to use a VFD (don't know much about them). I'm in Australia if that makes much of a difference

    Thanks for the help
    img_4013.jpg


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    easiest to swap motor if 415 volts not available.
    A vfd will not change the voltage.A transformer would.

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    If you can rewire the motor from star 415V configuration to 240V delta you'll be able to run it off 240V single phase with an inverter drive.

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    Default Shaper 415v - 240v

    Changing from star to delta would you loose HP? I thought I read it halves the power, I may be wrong and miss read it.
    So swapping out the motor looks to be the simplest, however it has a electrical box on the side (see photo) do I just disconnect power completely to the box and just wire the 240v to a new on/off switch?

    img_4016.jpg

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    I'm afraid your desire will be a bit more complicated. I see a transformer in the control box. This feeds something. These machines were designed to use a 4 wire service without neutral. These transformers will create a local low voltage supply that would feed control relays and/or a machine lamp. You must check it out before you do anything. I suspect your knowledge may not be up to it. If so, ask an electrician.

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    Quote Originally Posted by jlmtb1 View Post
    Changing from star to delta would you loose HP? I thought I read it halves the power, I may be wrong and miss read it.
    So swapping out the motor looks to be the simplest, however it has a electrical box on the side (see photo) do I just disconnect power completely to the box and just wire the 240v to a new on/off switch?

    img_4016.jpg
    It won't lose any power at all it just changes the voltage it runs on. Open up the motor terminal box if it has one and take a look at the terminals, most relatively modern motors have a range of voltages they can be configured to. It would be of benefit to find someone with some previous experience doing this sort of stuff. If you run a modern VFD you'll be disconnecting most of the contents of that electrical box and running power to the VFD unit direct.


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