[AT] Generator--doing funny things

Fri Jun 16 18:27:07 PDT 2006

This is more talk about EE machinery than I've seen in better than 20
years.  The next thing you know somebody will start talking about shaded
poles, hysteresis, and all that other jazz.  In some respects it's very
refreshing to know that there are still some engineers out there who can
work with things that not controlled with silicon chips.

Larry

-----Original Message-----
From: at-bounces at lists.antique-tractor.com
[mailto:at-bounces at lists.antique-tractor.com] On Behalf Of Thomas O.
Mehrkam
Sent: Friday, June 16, 2006 7:56 PM
To: Antique tractor email discussion group
Subject: Re: [AT] Generator--doing funny things

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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>>
>> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
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>> <META http-equiv=3DContent-Type content=3D"text/html; 
>> charset=3DUS-ASCII">
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>> face=3DArial color=3D#000000 size=3D2>
>> <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
>>
>>
>> -- 
>> No virus found in this incoming message.
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>>
>>
> 
> 
> _______________________________________________
> AT mailing list
> Remembering Our Friend Cecil Monson 11-4-2005
> http://www.antique-tractor.com/mailman/listinfo/at
> 

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