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  1. 07-09-2013 #11
    Boyan Silyavski's Avatar
    Lives in Denia, Spain.
    Boyan Silyavski
    Last Activity: 15-04-2024 Forum Superstar, has done so much to help others, they deserve a medal. Has been a member for 9-10 years. Has a total post count of 2,049. Received thanks 333 times, giving thanks to others 55 times. Made a monetary donation to the upkeep of the community.
    Quote Originally Posted by Jonathan View Post
    I agree there's not much point oversizing if you're getting a VFD from a reputable manufacturer - unless maybe it's being operated at an unusually high temperature. You'd be fine with the 0.75kW Toshiba VFD as you'll struggle to draw full power from the spindle, and the worst that can happen if you do is the VFD will just cut out to protect itself. It's better to select the inverter by current rating, not power rating.

    The VFDs from China let you set all the relevant parameters, like current and voltage, accurately so there's nothing to worry about there.

    Plenty of the 1.5kW VFDs available for £86:

    1.5kw VFD | eBay

    Maybe less if you use best offer...

    Thats what i was just going to tell. GOOD 2HP 1.5KW VARIABLE FREQUENCY DRIVE INVERTER 220-250V 7A VFD o4 | eBay

    The one from his link is 380V and 230v input, that's why is more expensive than the 230V input.
    Last edited by Boyan Silyavski; 07-09-2013 at 11:50 AM.
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