Motor Connection

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Motor Connection

This topic has 7 replies, 6 voices, and was last updated 10 December 2014 at 09:06 by Hi Speed Scrap.

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30 November 2014 at 18:00 #23604
Harry Wilkes
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@harrywilkes58467
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30 November 2014 at 18:00 #171108
Harry Wilkes
Participant
@harrywilkes58467
The photo are the connections for a single phase motor from Machine Mart my question is as anyone connected a reversing switch to a motor with this terminal arrangement ? I understand the old A1-2 Z1-2 connections but have to admit this one is 'hurting my head' would welcome some advice and if possible connection diagram please.
30 November 2014 at 18:14 #171109
martin perman 1
Participant
@martinperman1
Harry,

I might be wrong but the way I would do it would be to find, if it exists, a three way switch with the centre position off and the other ways wired individually to give the CCW and CW. The switch would be wired to replace the links as in your drawing.

Martin P
30 November 2014 at 20:24 #171123
Les Jones 1
Participant
@lesjones1
Hi Harry,
I think the confusion is caused by the switch. I initially assumed that it was the centrifugal switch bet then realised it would remove the power totally from the motor when it opened. I suspect that this is a thermal cut out switch. If I am correct then you will need 5 wires between the motor and the reversing switch rather than the normal 4. This is my understanding of the internal wiring of the motor. The run main winding is connected between U1 and U2 The auxiliary winding is connected between W1 and W2.V2 goes to V1 via the centrifugal switch.

Les.

Edited By Les Jones 1 on 30/11/2014 20:24:47
8 December 2014 at 21:05 #171978
Hamish McNab
Participant
@hamishmcnab62554
Are you sure its single phase? The connections appear as to how to run a three phase motor on single phase.
9 December 2014 at 09:17 #172000
Harry Wilkes
Participant
@harrywilkes58467
Posted by Hamish McNab on 08/12/2014 21:05:10:

Are you sure its single phase? The connections appear as to how to run a three phase motor on single phase.

Hi Hamish yes it is single phase and thanks to all who responded I have it sorted now . As far as the terminal marking it looks like to save money they are using the same terminal plate for both three phase and single phase motors.
9 December 2014 at 13:28 #172033
Roger Hart
Participant
@rogerhart88496
Glad you got that sorted. Now I thought I knew a bit about electrics and your comment about using one plate for 2 or 3 phase motors intrigued me. So I looked up 'Chinese 3 phase colours' and got this site :-

http://www.openelectrical.org/wiki/index.php?title=Cable_Colour_Code

Which confused me a lot! Maybe it is wrong, but the entries for Ireland and Portugal made me wonder….

Perhaps those who know can advise – I am thinking of handing in my Avo.
10 December 2014 at 09:06 #172108
Hi Speed Scrap
Participant
@hispeedscrap
Harry, PM me with your email address and i will send all the info you

need,

Dave
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