nuckollsr(at)cox.net
Guest
|
 Posted: Tue Dec 26, 2006 11:38 am Post subject: OV protection in an internally regulated alternator |
 |
|
At 10:06 AM 12/26/2006 -0800, you wrote:
| Quote: |
<grantneilson(at)telus.net>
When using the aeroelectric connection diagram for crowbar overvoltage
protection for an internally regulated alternator, why is it necessary to
have the continuous duty contactor in the system? Doesn't the OV module
cause the alternator field circuit breaker to trip, effectively shutting
down the alternator? It seems a redundancy to me to have both the alternator
field circuit and the contactor. And when the circuit breaker trips and the
contactor opens is there any risk of a voltage spike or arcing from the
contactor?
Thanks for any responses. I know there must be something I'm not
getting..........
|
See:
http://www.aeroelectric.com/FAQ/Internal_Regulator/
Links to z-figures don't work but you can get the latest
z-figures at:
http://aeroelectric.com/articles/Rev11/AppZ_R11J.pdf
For a lengthy analysis of this an related/unrelated
issues surrounding the use of stock automotive alternators
in aircraft goto:
http://www.matronics.com/searching/ws_script.cgi
and search the AeroElectric List archives for
"b-lead disconnect"
Bob . . .
---------------------------------------------------------
< What is so wonderful about scientific truth...is that >
< the authority which determines whether there can be >
< debate or not does not reside in some fraternity of >
< scientists; nor is it divine. The authority rests >
< with experiment. >
< --Lawrence M. Krauss >
---------------------------------------------------------
| | - The Matronics AeroElectric-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?AeroElectric-List |
|
|
|
Get Email Distribution Too!
FAQ
Search
Memberlist
Usergroups
Register
Profile
Log in to check your private messages
Log in
