Need some good advice.

Do you know if it is fitted with a no volt release starter? If so make sure the contactor coil isnt 440v as your converter will only be supplying 240v and wont pull the contacts in or hold them.

a search of Clarks own web site for the Clarke PC180 gave no results

but Machinemart has a link to the manual for the Clark PC 20 . PC 40 and PC60 converters

all have a autotransformer to step up a single phase 240 V supply to 440V

to run a 3PH 440V motor

and have 3 switches to switch in the required capacitors for various motor horse powers

I'd expect your converter to be very similar to the PC20

John

Edited By john swift 1 on 26/07/2013 23:19:43

The motor ran very slow for about 8 seconds or so then stopped so after checking around the switch I had power going in but nothing coming out, I then joined the wires so as to bypass the switch and the motor runs but still slowly, do I need to change the terminals around on the motor.

Al.

Hi Alan

looking at the motor terminals I've just noticed an extra white wire on the "N" terminal

that looks like you have 7 wires connected to the motor windings and not 6

and therefor does not match the connections on the lable for the 440V star connections or 240V delta (mesh) options

John

DOH! Missed that the white wires are from the start switch... i.e. are the 3-phase in. in that case we need to know the colours of the three wires that go to the back of the three terminals as well, though the fact a wire is attached to N suggests it is probably wired as star.

Neil

Edited By Stub Mandrel on 27/07/2013 11:15:14

If the white wires are coming from the start switch you only have one wire from the windings on terminals A, B, and C so it must be star wired. I can't see what's on terminal N, are there three wires there? If so and your converter is 230 V you need to rewire it for delta. If your converter is 440 V it should be OK. Perhaps one of the windings is open circuit or disconnected, check for continuity from each of terminals A, B, and C to terminal N.

Russell.

If the motor is either / or type, the wiring is generally in the inlet box. Ian S C

Alan,

You have now received quite a lot of good information and suggestions about your motor / converter problem. I really think it is time for you to seek the services of a professional motor repair company who will be able to quickly configure your motor in Delta mode and at the same time check it out for you.

With due respect to you and all the good people who have offered advice please do not start altering things that are not clearly understood as the result could easily be a ruined motor or injury to your self.

Best regards

Eric

Just been out and had a closer look, as follows A has Red and White wire

B has Yellow and White

C has Blue and White

N has one wire

What wire's do I need to change around, am I right in thinking I need to make it 440 volt to work with my converter.

Al.

Hi Alan

if your converter is like the PC20 you should have 440V between terminals L1 and L3 on the 3 phase socket without a motor connected

the problem is how your motor windings are now wired , the extra wire on the "N" terminal is unusual

your motor is 4 pole single speed motor (1425 RPM) and would originally had 6 wire connecting to the windings

the only diagram I've found with 7 wires is for a two speed motor

John

Edited By john swift 1 on 28/07/2013 09:30:43

Alan,

I believe you said that the white wires come from the start switch. So the motor itself only has four wires coming out so it is not as per original and has been rewound. The N terminal is probably the star point.

Have you done as I suggested and checked for continuity of each winding? I see you have a multimeter.

Your symptons suggest to me that one of the windings has gone open circuit if so you will need a new motor. It is cheaper to buy than rewind. I've had good service from **LINK**

Russell

Hi Russell I checked the motor for continuity like you said and it appears to be OK, so I have removed the motor and will get it checked at Lincs Rewind as soon as I can, will let you know how I get on.

Al.

Had the motor checked today and it's fine, so bought an inverter to go with it and had the guy rewire the motor to 220volt to suit the inverter so just need to fit it now, the switch on the drill does not work but don't need it any way, but thinking there may be a problem with the converter not putting out enough power to start the drill, will have to get that checked out, thanks for all the reply's from everyone the advice was great and very useful.

Al.