electric motor recondition.

A place to exchanges questions and ideas of a technical / procedural nature. Go ahead, try to stomp us !
sivagurunathan
Tanktop Cleaner
Posts: 14
Joined: Tue Jan 21, 2014 9:21 am
Currently located: Madurai, India

electric motor recondition.

Postby sivagurunathan » Fri Jan 24, 2014 5:22 am

is there any way to check/verify the amount of copper used in a reconditioned motor is same as that of the original? if so how its tested.

User avatar
Big Pete
Engineering Mentor
Posts: 785
Joined: Fri Apr 24, 2009 11:18 pm
Currently located: Solihull, England

Re: electric motor recondition.

Postby Big Pete » Fri Jan 24, 2014 7:02 am

weigh the motor.
BP
It is always better to ask a stupid question than to do a stupid thing.

sivagurunathan
Tanktop Cleaner
Posts: 14
Joined: Tue Jan 21, 2014 9:21 am
Currently located: Madurai, India

Re: electric motor recondition.

Postby sivagurunathan » Sat Jan 25, 2014 7:47 am

to mr. Big pete.... thanx for ur answer. iam having some more doubt.... if the weight of the motor is same it indicates the amount of copper used is same as that of the original. but to check if the copper used in each phases are same shall we consider testing of ohmic value of each phase by using multimeter (continuity test). if the ohmic values are same then does it indicates that the amount of copper in same in each phase.

correct me if iam wrong....thanx in advance

User avatar
Big Pete
Engineering Mentor
Posts: 785
Joined: Fri Apr 24, 2009 11:18 pm
Currently located: Solihull, England

Re: electric motor recondition.

Postby Big Pete » Sun Jan 26, 2014 7:41 am

You are having a busy time posting on here!!

As you understand, if the weight of the motor before and after rewinding is the same the weight of copper will be the same.
As you say if the Resistance of each phase is the same, there should be the same amount of Copper in each, unless of course one phase has a short length of small diameter copper and another phase has a long length of larger diameter of copper, which could both give the same resistance reading!!
You can also check the running current in each phase and you would also check the temperature that the motor is running at when you tested it.
The efficiency of the motor is linked to the ratio between the resistive losses and the Inductive losses.
BP
It is always better to ask a stupid question than to do a stupid thing.

sivagurunathan
Tanktop Cleaner
Posts: 14
Joined: Tue Jan 21, 2014 9:21 am
Currently located: Madurai, India

Re: electric motor recondition.

Postby sivagurunathan » Sun Jan 26, 2014 8:36 pm

thank u mr. Big pete....


Return to “The Workshop”

Who is online

Users browsing this forum: No registered users and 1 guest