3 Phase

Just looked and my cover plate is the same as "mad-modder's" - just need to know where to look! I have added images of the little inverter I have which is 240v single phase in and 240v 3 phase out it is a KBMA-24D, 24DF 2 for 1/8HP thru 1HP 3-Phase AC Motors rated 208 – 230 VAC, 50* & 60 Hz. Once again thank you all for taking so much time to help it really is appreciated. I will also update my profile which will show I am on the edge of North and West Yorks. Many thanks. David

If the 'star point' is accessible and it's wired correctly, then the correct wiring for delta sees each of red, yellow and blue connected to one of of the star point wires that doesn't belong to the same coil.

Your winding connections are the standard colours of red, yellow blue and Brown, white, black so the connections in MIchael Brigg's photo are standard.

Pleased you did post your photo directly on this forum. I don't like stealing other peoples photos from their web site(s).
Thanks

Bill

There is no earth connection to ground on that inverter?

Davey, I'm not formally electrically qualified, my electrical engineering skills/qualifications are related to telephone exchanges, but one thing jumps out at me.
It may well be that I'm missing something on the photo(s) of your inverter.

It looks like it's mains fed from two core cable, with no earthing back to the supply side. I'd be inclined to use 3 core, of appropriate size and fusing.

Similarly when you get to the motor end, I'd add another length of Green/Yellow from the motor frame termination back to the main drilling machine itself.

The motor side connections in the inverter look OK at U-V-W + Earth
Personally I prefer to leave the earth tail longer than the phase wires; that way should the cable get heavily snagged, the earth is the last one to become disconnected.

Have a look in my album on here for a way of making a compact ring terminal for the motor end of the 3 phase cable; they are just leatherworkers eyelets.

The inverter end is designed to accept either bare wires or a pin termination; just make sure there's no straggly bits if you use bare wires.

Bill

p.s. NDIY beat me to it with less typing. 

Edited By peak4 on 29/09/2019 14:50:09

Whoops! Sorry sir.