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iccdan
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Join Date: Oct 2014
Posts: 2

What Caused This Damage?

10/14/2014 12:58 PM

I'm looking for the reason why these stator windings are blackened. They don't have a burn pattern related to phase loss, rather they look like they overheated. But that's only an opinion. Any ideas? Thanks!
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Pathfinder Tags: black wires burned damaged stator Rewind
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SolarEagle
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#1

Re: What caused this damage?

10/14/2014 1:06 PM

Where's the rotor, what does that look like..? From here it looks like it's been overheating, but it could just be an accumulation of oil and dirt...if the rotor smoked out, it could be soot...

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jack of all trades
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#2

Re: What caused this damage?

10/14/2014 2:45 PM

Better also check the history of the motor with maintenance and staff working with the motor to see if anything had changed recently that could have caused or lead to the failure.

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North of 60
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#3

Re: What caused this damage?

10/14/2014 2:47 PM

Looks to me like it got good and wet inside.

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Unredundant
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#4
In reply to #3

Re: What caused this damage?

10/14/2014 2:55 PM

Good an wet and bindings popped from swelling and slot burn on left hand side of the picture.

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Sapper
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#5

Re: What Caused This Damage?

10/14/2014 8:47 PM

To me it looks like it either got Water into the windings or more likely the bearings have worn and the rotor & stator are brushing against each other and you have caught it before it shorts to earth... I'm guessing that you stripped it down because it wasa making noises that it shouldnt and wisely decided to investigate.

Not be wise again and get someone who knows how to rebuild motors to rebuild it for you.

Regards,

Sapper.

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TonyS
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#6

Re: What Caused This Damage?

10/14/2014 11:21 PM

Looking at the photograph as a whole I would say its been taken in the local scrap yard.

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ozzb
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#7

Re: What Caused This Damage?

10/15/2014 7:24 AM

I see what appears to be a commutator cover in the back ground. If it is a DC motor with brushes it could be carbon stain. Especial if the motor was put into service and the varnish was still tacky.

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iccdan
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#8

Re: What Caused This Damage?

10/15/2014 5:10 PM

I want to thank everybody for all of the input! The motor is a vertical hollow shaft unit that ran a well pump. It's 3 phase 460v.
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PWSlack
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#9
In reply to #8

Re: What Caused This Damage?

11/03/2014 9:31 AM

Well don't do it again. Replace it.

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Users who posted comments:

iccdan (1); jack of all trades (1); North of 60 (1); ozzb (1); PWSlack (1); Sapper (1); SolarEagle (1); TonyS (1); Unredundant (1)

Previous in Forum: Is Their Any Motor That Has Zero Back EMF?   Next in Forum: Motor Contribution Through Delta/Star Transformer

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