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dan(at)azshowersolutions.
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 Posted: Tue Nov 16, 2010 12:46 am Post subject: Pondering |
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As I have recently completed wiring for the z-16...I find myself going through
what-if questions. Not uncommon to most pilots as this is what saves our bacon
should the deamon in question present itself.
so... If while in flight the crowbar trips an over-voltage and in turn the
alternator disconnect relay does its thing...
1. What would be my indicator that this has indeed happened?
2. Other than knowing I need to land soon, what other steps should I take?
3. Should I turn off the ALT, the ALT and BATT and just rely on my essential
buss?
4. Will cycling the ALT/BATT re-set the Alternator Relay if the overvoltage has
subsided? Would this be good practice or just asking for it?
Thanks for your thoughts
Dan
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nuckolls.bob(at)aeroelect
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| Posted: Tue Nov 16, 2010 7:13 am Post subject: Pondering |
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At 02:41 AM 11/16/2010, you wrote:
| Quote: |
<dan(at)azshowersolutions.com>
As I have recently completed wiring for the z-16...I find myself
going through
what-if questions. Not uncommon to most pilots as this is what saves
our bacon
should the deamon in question present itself.
so... If while in flight the crowbar trips an over-voltage and in turn the
alternator disconnect relay does its thing...
1. What would be my indicator that this has indeed happened?
|
Low voltage light comes on . . .
| Quote: | 2. Other than knowing I need to land soon, what other steps should I take?
|
How soon? Do you KNOW what the capacity of your battery
is for sustaining flight? Do you have a plan for
reducing loads on the battery to MEET your design
goals for battery only ops? Do you plan to carry
flight bag accessories intended to mitigate the
effects of electrical power loss?
http://aeroelectric.com/Pictures/Misc/Vacination_for_Dark_Panel_Syndrom.pdf
| Quote: | 3. Should I turn off the ALT, the ALT and BATT and just rely on my essential
buss?
|
That's up to you what do you WANT to be able to accomplish
with no alternator and how are you planning to meet those
design goals with confidence?
| Quote: | 4. Will cycling the ALT/BATT re-set the Alternator Relay if the
overvoltage has
subsided? Would this be good practice or just asking for it?
|
Actually, just pushing the breaker back in will bring
the alternator back on line. Just in case the event might
have been a transient event, you can do this one time
and it's good to monitor system voltage if it's displayed
anywhere on the panel. If the voltage starts to climb
abnormally, you can pull the breaker . . . or it may
climb so fast that you don't have to pull it . . . it
will trip by itself.
Check out chapter 17 in the 'Connection.
Bob . . .
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