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Where can I get terminal posts?

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Andrew Tinsley16/07/2020 16:17:04
1153 forum posts

Hello,I am just converting some Crompton Parkinson 3 phase motors from star to delta.

They only have 3 terminals right now. But having unpicked the star points, I need another 3 connection terminals to convert to delta.

Can I find such beasties? No, probably because I am using the wrong search term! I know I could just use nuts and bolts and bodge the terminals, but I do like the cupped washers that you get with the genuine terminal posts.

I am going to use a larger piece of tufnol plate to get the 6 terminals in, so I may as well do a pukka job.

Thanks,

Andrew.

Edited By Andrew Tinsley on 16/07/2020 16:18:14

Michael Gilligan16/07/2020 16:24:46
avatar
15891 forum posts
693 photos

RS Components would be my first port of call

**LINK**

Not only do they have an excellent search facility, but many products have data-sheets available.

MichaelG.

.

For the sake of political correctness, I should mention that many alternative suppliers are available

Andrew Tinsley16/07/2020 16:42:52
1153 forum posts

Hello Michael,

RS and Farnell were my first port of call. Nothing remotely like the required terminal posts as far as I could see. Thanks for the suggestion.

Andrew.

Andrew Tinsley16/07/2020 16:42:53
1153 forum posts

Hello Michael,

RS and Farnell were my first port of call. Nothing remotely like the required terminal posts as far as I could see. Thanks for the suggestion.

Andrew.

Bandersnatch16/07/2020 16:47:44
avatar
1659 forum posts
60 photos

Digikey has similar.

(Don't know what they are like in the UK but in Canada the (US) company ships from the Canadian side of the border with prices in $CDN. They charge a very nominal $8 flat rate shipping such that, if I order before 8pm one day, I get it by noon the next. I could barely drive to a local store for $8).

Non-PC Bandersnatch wink

Circlip16/07/2020 16:47:52
1134 forum posts

Can't you buy a "Scrap" motor and scavenge them? Alternately any Motor rewinders in your area?

Regards Ian.

Edited By Circlip on 16/07/2020 16:49:06

Andrew Tinsley16/07/2020 17:00:52
1153 forum posts

Having found a 6 terminal block for £25 inc P&P. I think I will make up some myself. I can't afford £100 to convert 4 motors from star to delta!!!!!!!!!!!!

Thanks all,

Andrew.

David Jupp16/07/2020 17:02:56
734 forum posts
17 photos

Not sure why you need 6 terminals - if it'll be a permanent change over, you only need 3.

When I did something similar I just added an extra ring terminal to each of the 3 posts.

Michael Gilligan16/07/2020 18:38:20
avatar
15891 forum posts
693 photos
Posted by Andrew Tinsley on 16/07/2020 16:42:53:

Hello Michael,

RS and Farnell were my first port of call. Nothing remotely like the required terminal posts as far as I could see. Thanks for the suggestion.

Andrew.

.

Sorry, Andrew ... I thought you were looking for individual ‘terminal posts’ to fill an existing block

I now assume, from your own findings, that it’s something more like these that you want:

**LINK**

http://brocott.co.uk/electric-motor-terminal-blocks/

... is that correct ?

MichaelG.

Andrew Tinsley16/07/2020 18:54:50
1153 forum posts

Hello David and Michael,

I take the point that I don't need six terminals. But I would like to make it easy to go back to star if needed and the modern system for new motors is 6 terminals and 3 links. Much easier to do the deed that way and at least the terminal system is then to a modern "standard".

Michael your link is perfect, a standard six terminal block for less than a fiver. That will do me just fine. Thank you!

Living out in the sticks means a minimum of a 40 mile round trip to the nearest motor rewinder, so mail order wins hands down.

A sincere thanks to everyone for your time and suggestions.

Andrew.

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