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Rotax 914 internal generator

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rparigoris

Joined: 24 Nov 2009
Posts: 790

Posted: Sun Jun 13, 2010 5:49 pm Post subject: Rotax 914 internal generator

Hi group



I am using Eris Jones Linear Over-Voltage Protector  to control my Rotax 914 internal generator through a 75 amp automotive relay.



At moment I have relay on my schematic downstream of the Ducati regulator. If regulator fails and there is in fact a runaway over volt event, true the L OVP device will disconnect it from my electrical system, but the generator will still be outputting.



Do you think I would be better off moving the relay that is controlled by the L OVP to be in series with one of the generators yellow output wires?



Here is my schematic with relay downstream of Ducati regulator:

http://www.europaowners.org/forums/gallery2.php?g2_itemId=80372&g2_imageViewsIndex=0



Please click drop down to get higher resolution of 2592 x 1944.



Thanking you in advance.

Ron Parigoris

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nuckolls.bob(at)aeroelect
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Posted: Mon Jun 14, 2010 5:37 am Post subject: Rotax 914 internal generator

At 08:49 PM 6/13/2010, you wrote:


<rparigor(at)suffolk.lib.ny.us>



Hi group



I am using Eris Jones Linear Over-Voltage Protector  to control my 

Rotax 914 internal generator through a 75 amp automotive relay.



At moment I have relay on my schematic downstream of the Ducati 

regulator. If regulator fails and there is in fact a runaway over 

volt event, true the L OVP device will disconnect it from my 

electrical system, but the generator will still be outputting.



Do you think I would be better off moving the relay that is 

controlled by the L OVP to be in series with one of the generators 

yellow output wires?



    That is a better place to "shut the system" down.

    See:



http://www.aeroelectric.com/PPS/Adobe_Architecture_Pdfs/Z16M.pdf



   Bob . . .

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rparigoris

Joined: 24 Nov 2009
Posts: 790

Posted: Mon Jun 14, 2010 9:11 am Post subject: Re: Rotax 914 internal generator

Hi Bob



"That is a better place to "shut the system" down. 

See:

http://www.aeroelectric.com/PPS/Adobe_Architecture_Pdfs/Z16M.pdf"



OK I will place relay at yellow wire.



How many AC volts, and how many AC amps should the contacts of the relay be rated to "break" at?



Thx. again

Ron Parigoris

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nuckolls.bob(at)aeroelect
Guest

Posted: Mon Jun 14, 2010 10:20 am Post subject: Rotax 914 internal generator

At 12:11 PM 6/14/2010, you wrote:

 	  Quote: 	
		  

<rparigor(at)suffolk.lib.ny.us>



Hi Bob



"That is a better place to "shut the system" down.

See:

http://www.aeroelectric.com/PPS/Adobe_Architecture_Pdfs/Z16M.pdf"



OK I will place relay at yellow wire.



How many AC volts, and how many AC amps should the contacts of the 

relay be rated to "break" at?


	


   The relay you called out on the DC side of

   the rectifier/regulator will be fine.



   AC is MUCH easier on relays than is DC.

   Bob . . .

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