[AT] Generator--doing funny things

Fri Jun 16 17:56:21 PDT 2006

I think you are saying the same thing he is.

Clock motors have little load and are designed so there is no slippage.

Motors have some slippage and run at a slightly slower speed.

 From another EE. This group is infested with then. :-}

charlie hill wrote:
> Will,  I guess I'm stupid to be arguing with an EE but I thought the RPM 
> of electric generators was to control the frequency.  Most stuff runs at 
> 60 HZ. 3600 rpm / 60 sec/min corresponds to 60 Hz in the case of a 2 
> pole generator.  Other wise our old style clocks wouldn't be right and 
> our TV pictures would  look funny.   Am I wrong about that?
> 
> Charlie
> 
> ----- Original Message ----- From: <Bustedtractor at aol.com>
> To: <at at lists.antique-tractor.com>
> Sent: Friday, June 16, 2006 6:19 PM
> Subject: Re: [AT] Generator--doing funny things
> 
> 
>> The RPMs for a generator will usually be either 3600 or 1800. A 2-pole
>> generator operates at 3600 RPMs, while a 4-pole generator will run at 
>> 1800 RPMs.
>> There is the possibility of a 6-pole unit in which case the RPMs would be
>> 1200. These RPM numbers are governed by the laws of physics and also 
>> represent
>> the nominal speeds that a electric motors will run at. The actual 
>> operating
>> speeds for motors are slightly less due to slip. Electric motors 
>> typically run
>> at 3450, 1725, and 1150 RPMs based on their design and  construction.
>>
>> I just retired from electrical engineering 2 weeks ago and now I have  a
>> number of tractors that are begging for my full-time attention.
>>
>> Will in MN
>>
>> -------------------------------1150496391
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>> <META http-equiv=3DContent-Type content=3D"text/html; 
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>> <DIV>The RPMs for a generator will usually be either 3600 or 
>> 1800. A 2-=
>> pole=20
>> generator operates at 3600 RPMs, while a 4-pole generator will 
>> run at 1=
>> 800=20
>> RPMs. There is the possibility of a 6-pole unit in which case the RPMs 
>> would=
>> be=20
>> 1200. These RPM numbers are governed by the laws of physics and 
>> also=20
>> represent the nominal speeds that a electric motors will run at. The 
>> actual=20
>> operating speeds for motors are slightly less due to slip. Electric 
>> motors=20
>> typically run at 3450, 1725, and 1150 RPMs based on their design and=20
>> construction.</DIV>
>> <DIV> </DIV>
>> <DIV>I just retired from electrical engineering 2 weeks ago and 
>> now I h=
>> ave=20
>> a number of tractors that are begging for my full-time attention.</DIV>
>> <DIV> </DIV>
>> <DIV>Will in MN</DIV></FONT></BODY></HTML>
>> _______________________________________________
>> AT mailing list
>> Remembering Our Friend Cecil Monson 11-4-2005
>> http://www.antique-tractor.com/mailman/listinfo/at
>>
>>
>> -- 
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>>
> 
> 
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