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Inverter help

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David P21/05/2023 15:44:05
4 forum posts
7 photos

So if I wire it as the motor plate picture by Pixel_Porpoise it will look something like my attempt at an electrical drawing, sorry.

I have done a test and get a reading when the multimeter is put between A red and black N, also get a reading between B yellow and brown N and C blue and white N.

wiring delta.jpg

old mart21/05/2023 19:00:30
4655 forum posts
304 photos

If you have it wired in delta, then the resistance values between any two of the three should match fairly well. The fourth wire, (neutral), would not be connected to anything. If it was still in star the fourth connection, (neutral), and any other would read half the resistance of the reading between any two of the three. Your sketch looks like delta to me.

Adrian Mann25/05/2023 03:05:26
2 forum posts

I can also recommend “Inverter Drive Supermarket”

No need to buy an inverter one size larger than than the motor rating.

Inverter should be installed in an enclosure (would not pass any electrical inspection if this is not done as swarf fingers etc can touch the live 3phase terminals).

To avoid the cost and hassle of an enclosure I bought a IP66 rated inverter when I converted my Bridgeport mill and Colchester bantam These inverters are slightly more expensive but as they and waterproof you don’t need the enclosure. Also no need to worry about swarf or coolant getting on the inverter.

Use screened cable and correct glands between the inverter and motor (SY cable)

If your not competent with electrics get someone who is to wire it up for you

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