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[Amps] Muffin Fans and hot exhaust

To: <amps@contesting.com>
Subject: [Amps] Muffin Fans and hot exhaust
From: 2@vc.net (2)
Date: Mon, 22 Jul 2002 19:23:47 -0700
>
>>  [Steve Katz]  I realize that this works to some extent; however, I
>> have been unsuccessful in quantifying actual results because the AC
>> motors run on reduced voltage have a great reduction in torque and
>> thus cannot spin well against back pressure.  When I run a standard
>> 240V 125cm (4.25") "Boxer" type fan on 120V, I can stall it with the
>> tip of my finger very easily, no damage done to finger.  
>
>Assuming the motor can take it, motors with start/run windings can be 
>damaged when operated at low voltage, ...

Start-winding motors are used in compressors, where the motor needs to be 
able to start against static gas pressure.  I have never seen a blower or 
fan with a start-winding. 

-  R. L. Measures, a.k.a. Rich..., 805.386.3734,AG6K, 
www.vcnet.com/measures.  
end


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