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Over Voltage Protection for Internal Regulated Alternators

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nuckolls.bob(at)aeroelect
Guest

Posted: Sun Jul 17, 2011 6:02 pm Post subject: Over Voltage Protection for Internal Regulated Alternators

At 03:17 PM 7/17/2011, you wrote:

 	  Quote: 	
		  



If my IR alternator ever goes belly up I'll move to an externally 

regulated one, but for now it is what it is.



I have a 40A internally regulated alternator.  I am rewiring my RV-8 

to Z-11 standard and want to include OV protection.  I have read up 

on the forums and on AeroElectric Connection.  I just want to 

confirm the latest thinking on OV protection.



1) use a Cb-OV-14 crowbar protection circuit on the Master switch



and



2) a S701-1 B-lead contactor


	


   That works.



   Alternatively, you can go inside the alternator

   and modify it in the same manner that Plane-Power

   does so that you have EXTERNAL control of the

   field supply conductor while retaining use of

   the internal regulator.



 	  Quote: 	
		  I am also installing a 60 amp ANL in the B-lead between the 

alternator and the starter solenoid.


	


   This device has nothing to do with ov protection  . . .

   only protection of the b-lead wire in case of shorts

   in the diode array . . . a very rare event.

   Bob . . .

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Bubblehead

Joined: 26 Oct 2007
Posts: 48
Location: N. Richland Hills, TX

Posted: Mon Jul 18, 2011 4:23 am Post subject: Re: Over Voltage Protection for Internal Regulated Alterna

I agree and understand the ANL has nothing to do with OV protection.



Where would I find information on going "inside the alternator and modify it in the same manner that Plane-Power does so that you have EXTERNAL control of the field supply conductor while retaining use of the internal regulator. "

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_________________
John
Keller, TX
RV-8 N247TD

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