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MotorMaster
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Join Date: Sep 2010
Posts: 1

Electric Motor Drying Equipment.

09/15/2010 8:38 AM

Hi everybody!

I have found a device which eliminates moisture from insulating winding of the motor. That device generates electroosmotic field which squeeze out moisture. It is made somewhere in Russia.

I am wondering if you have ever heard of such devices and maybe there is decent analogue made in Europe or US maybe?

Thanx!
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TonyS
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United Kingdom - Member - New Member

Join Date: Aug 2010
Location: Resting under the Major Oak
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#1

Re: Electric Motor Drying Equipment.

09/15/2010 10:22 AM

Well this one got me fascinated.

But I think MotorMaster you'd better reread the nature of the materials dewatered by electro-osmotic applications they all seem to be fibrous or porous. It may work on older shellac insulated motors but I don't think it would on modern vacuum impregnated insulation.

I could be wrong.

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JRaef
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United States - Member - New Member Engineering Fields - Power Engineering - New Member

Join Date: Sep 2006
Location: California, USA, where the Godless live next door to God.
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#2

Re: Electric Motor Drying Equipment.

09/15/2010 1:26 PM

I don't see how they could do it with electro-osmosis because that requires setting up an anode and cathode, how are you going to do that on motor windings?

Most likely it is a simple DC injection motor winding heater that just raises the winding temperature to slightly above the dew point and dries the winding insulation. These products exist from Motortronics and Allen Bradley here in the US. In addition, many VFDs and a few soft starters are now offering this as a built-in feature as well.

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