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Lamar DSX1240-1 Alternator overvoltage protection

 
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Tundra10



Joined: 14 Jun 2010
Posts: 102
Location: Scarborough, Ontario

PostPosted: Sat Mar 03, 2012 12:30 pm    Post subject: Lamar DSX1240-1 Alternator overvoltage protection Reply with quote

Does anyone have additional information concerning the Lamar 40A
alternator, part number DSX1240-1 ?

A fellow builder purchased one from his engine builder and wants to
add overvoltage protection.

The website seems to be non-functional at the moment, so I have
attached the diagram provided in the minimal installation
instructions. If the attachment doesn't come through, you can see the
diagram here:
http://www.qenesis.com/Temp/LamarDSX1240-1.jpg

To me, it looks like the separate connection for the field wire should
work nicely with a typical overvoltage protection circuit designed to
pop the breaker.

Does anyone have specific knowledge or experience to know this will work ?

The "alternator warning light" wiring is incompatible with an
overvoltage protection circuit, since after the breaker has popped,
the indicator cannot possible come on.

Does anyone know if that indicator, supplied by another circuit, would
correctly indicate a low voltage condition if the field supply is
disconnected by the popped breaker ?

Thanks,
Jeff Page
Dream Aircraft Tundra #10


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