Thread: Motor Re-winder in Sydney

$500 for a rewire?
Are you sure they arent talking about having it rewound?

Stuart

Ben,

Base mount ASEA motors are pretty abundant and usually cheap. The motor on your No.O is flange mount. If you find a more common base mount motor of the same frame size but Star/Delta wound, the front end cap can be removed and replaced with the cast iron flange off the original Hercus mounted ASEA donk. Being anal, I milled off the base mounting from the replacement ASEA motor I have fitted to my mill to make it look the part. If you look at your motor you will see that is what ASEA did also when they offered the motor in flange mount guise.

Bob.

500 big ones seems way over the top. I have since done two star to delta re-wirings myself and it would really hurt if I had to pay someone to do it. The first one I did was for my mill VFD conversion. I did a thread on it:

Converting 3 phase star to delta

Like I said, I have done two now and I have not found it to be anything highly technical in fact the first time I did it I really enjoyed doing it myself, the second time I was nearly complacent. It is certainly no more technical than a VFD conversion.

Disclaimer: I'm not an electrician!

Simon

Ben,

I have found Austin Electric in Lidcombe to be reasonable with their charges.
It's best if you go there and show it to them, and it may be easier if you take it along in pieces so they can see the innards.

Cheers,
Bill

Hi Ben,

I think I'm just echoing what everyone else has already said, but don't pay $500 for the star/delta wiring conversion... you could buy 2 brand new 1/2hp 3 phase motors for that sort of money...

Can you post a picture of the motor name plate, and a picture of the motor terminals. If it requires the star point to be brought out, then it's a trivial job for a motor rewinding company, my son-in-law is a motor rewinder and he tells me it's normally just a 15 minute job.

Short form instructions...
Open the motor up, locate the star point, braze on three new wires ( he uses a hard silver solder** ), cover the wires with fibreglass spaghetti, lace up the wires around to the terminal block, spray with varnish. Re-assemble the motor, and check the phasing of the windings, label the first three U1, V1, W1, label the co-oresponding ones from the star point U2, V2, W2, Delta connection is U1--W2 U2--V1 V2--W1

The spaghetti, lacing and varnish should be available from a motor rewinder. Or you could try these ebay suppliers...

Vidaflex Fibreglass Sleeving Spaghetti Insulation 1M | eBay

500yd Gudebrod MIL T 43435B Synthetic Braided Lacing Tape 18H SZ 3 Type I | eBay

Motor Insulating Varnish 100ml Coil Varnish | eBay

Regards
Ray

** hard solder is not really necessary, it just provides for a higher temperature before it all falls apart...

Originally Posted by Stustoys

$500 for a rewire?
Are you sure they arent talking about having it rewound?

Stuart

Hi,

Thanks for all the replies and offers of help. I should of stated I'm not a electrician and anything that sparks scares me. I may have asked for a rewind, not a rewire. I think I'll try again tomorrow and ask for a rewire instead. I'll try the bloke at Lidcombe as well.

Thanks Ben.

HI,

I took some photo's of the motor:

hopefully these will make sense to someone.

Cheers Ben.

Hi,

I took the motor out to Austin Electronics in Lidcombe. They're having a look but didn't sound too keen on doing anything to it. Sounded more interested in seller a newer 3ph instead. Should know in a couple of days.

Ben

Ben,

You can also try John Hill (Electrical Industries) Pty Ltd
02 9773 7193 located at 3 Enterprise Ave Padstow 2211.

I have used them in the past for a few small jobs (single phase) but I have noticed they do a wide range of big electrical motors onsite. Another opinion cant go astray.

Retired Eka

I am in the electronics field and have done electricians tafe course but never the field work for ticket.

That said it looks like you need to trace S5 white wire back into the motor and it will branch into 3 and dissappear into the 3 windings at some point. Those 3 need to be separated and brought out to that junction box as in post above and connected as triangle (delta) rather than Y (star).

I used to use a mob called Atom in Silverwater (Auburn end). But was some time ago. They used to be agents for repair of Dremel among others. They rewound anything and everything.

Regards
James

I expect i may need to this shortly on one of mine.


Sent from my iPad using Tapatalk HD

DISCLAIMER

No liability is accepted by UBeaut or the Wood Working Forum's administrators
or moderators for advice offered by members posting replies
or asking questions regarding electrical work.
We strongly advise contacting a Licensed Tradeperson for all electrical work.

WARNING

Information supplied within posts is not to be considered as detailed formal instructions to complete a task.
Members following such information do so at their own risk

HI,

Thanks for all the replies and advice. I picked up my motor today from Austins at Lidcombe. Cost $70 bucks and all good to go (not that I'd really know). Will now be looking for a suitable VSD.

Cheers Ben.