Need Help! Voltage regulator for Chinese CNC router


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Thread: Voltage regulator for Chinese CNC router

  1. #1
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    Question Voltage regulator for Chinese CNC router

    Hello
    I want to connect the CNC router to a voltage regulator. How many KVAs to choose?
    CNC router 1300x2500
    4 motors
    spindle 380V, 3.2kw, 7A, 400Hz, 24000 rpm
    thanks

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  2. #2
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    Default Re: Voltage regulator for Chinese CNC router

    I think you may mean 'Step Down Transformer'? Is your supply voltage too high?
    If I have got it wrong, can you please elaborate. I'm guessing English is not your first language.

    We are going to need more info....



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    Default Re: Voltage regulator for Chinese CNC router

    hello Sterob and thank you for your reply.
    1 - its true , English is not my first language.
    2 - i want to protect my cnc router machine with automatic voltage regulator.
    Voltage regulator for Chinese CNC router-regulator-jpg
    one like this for example.
    and i need to know , how many KVA to choose?
    thank you.

    Attached Thumbnails Attached Thumbnails Voltage regulator for Chinese CNC router-regulator-jpg  


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    Default Re: Voltage regulator for Chinese CNC router

    Ok...You must have wild voltage fluctuations in your area?

    Your Spindle is rated at 3.2kW and that would be most of the load.
    I would think that you would be ok using a 3.5 kVA AVR or if you wanted to be extra safe, maybe 4.0 kVA. depending on what sizes are available.
    The worse your Power factor is, the higher the kVA rating has to be.
    Cost will probably a consideration as well.



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