Is this motor faulty?

[Chaz]

OK Have you wired it the same as the plate on the motor

The motor didnt come with a name plate.

Im fairly sure its a 3phase motor, not 'made' for single phase.

[Clive S]

The motor didnt come with a name plate.

Im fairly sure its a 3phase motor, not 'made' for single phase.

OK But are the terminals laid out like in the 1ph picture on the pdf with links in. and can you see 6 wires from the coils connected to them?

[Chaz]

OK But are the terminals laid out like in the 1ph picture on the pdf with links in. and can you see 6 wires from the coils connected to them?

The wiring was a Star connected 6 wire system. That said, when I checked the pattern, it didnt match the drawing in the document, someone could have messed with it.

Ill try delta connection tonight and see if that helps before considering buying a VFD (£120 ish for a 4KW unit that can run the 4KW spindle later).

[uli12us]

If you can use a 4kw VFD then you have a 3~ mains. A normal 1~VFD have a maximum of 2,2kW.
Thats the maximum, what your 13Amp power socket is capable. The VFD can have more power then the motor, but should be in a similiar power range, 1,5 to 2 * the Motor is ok but not 5 times.

[Chaz]

If you can use a 4kw VFD then you have a 3~ mains. A normal 1~VFD have a maximum of 2,2kW.
Thats the maximum, what your 13Amp power socket is capable. The VFD can have more power then the motor, but should be in a similiar power range, 1,5 to 2 * the Motor is ok but not 5 times.

Thanks. Understood. I am running my mill from a 32A socket.

[Chaz]

So, wired to Delta. 30uF cap, doesnt spin up, just turns slowly.

Connect a 300uF cap, instant spin up. Takes full load, can block the vacuum pipe with my hand, it just keeps going.

The only thing was that motor got hot very quickly. I didnt have the cowl structure on it so that meant no real cooling. It got hot very quickly however.