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kjohnsondds(at)yahoo.com
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 Posted: Sat Feb 04, 2012 7:31 am Post subject: alternator wiring |
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Bob and All,
I have appreciated all the information received during the last year or two as I have been preparing to wire my panel. The time has come. I have a question regarding the wiring of my alternator, a Bosch AL394X. I have tried to find wiring schemes on the internet, but have not been able to download what I need. I have included a picture to help. At about 12 o'clock, I assume the large, black connecter goes to the battery. What should be done with the connector plug at about 10 o'clock above the center hub and the two connector plug at about 6 o'clock below the center hub? Thanks for your help!!! Ken Johnson
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nuckolls.bob(at)aeroelect
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| Posted: Sat Feb 04, 2012 10:19 am Post subject: alternator wiring |
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At 09:23 AM 2/4/2012, you wrote:
Bob and All,
I have appreciated all the information received during the last year or two as I have been preparing to wire my panel. The time has come. I have a question regarding the wiring of my alternator, a Bosch AL394X. I have tried to find wiring schemes on the internet, but have not been able to download what I need. I have included a picture to help. At about 12 o'clock, I assume the large, black connecter goes to the battery.
Yes
What should be done with the connector plug at about 10 o'clock above the center hub . . .
Leave it open
and the two connector plug at about 6 o'clock below the center hub? Thanks for your help!!! Ken Johnson
Ignore the "lamp" connection. Connect your control
input wire to "IGN". Do you have a plan for dealing with
an OV condition?
[img]cid:7.1.0.9.0.20120204121106.01e3b368(at)aeroelectric.com.0[/img]
Bob . . .
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kjohnsondds(at)yahoo.com
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| Posted: Sun Feb 05, 2012 10:27 am Post subject: alternator wiring |
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Bob, thanks again for your help. I have an EXP-Bus that I am using and in which I can connect for OV protection. Does the 10 o'clock connection go to this bus?
Ken Johnson
From: "Robert L. Nuckolls, III" <nuckolls.bob(at)aeroelectric.com>
To: aeroelectric-list(at)matronics.com
Sent: Saturday, February 4, 2012 12:14 PM
Subject: Re: alternator wiring
At 09:23 AM 2/4/2012, you wrote:
Bob and All,
I have appreciated all the information received during the last year or two as I have been preparing to wire my panel. The time has come. I have a question regarding the wiring of my alternator, a Bosch AL394X. I have tried to find wiring schemes on the internet, but have not been able to download what I need. I have included a picture to help. At about 12 o'clock, I assume the large, black connecter goes to the battery.
Yes
What should be done with the connector plug at about 10 o'clock above the center hub . . .
Leave it open
and the two connector plug at about 6 o'clock below the center hub? Thanks for your help!!! Ken Johnson
Ignore the "lamp" connection. Connect your control
input wire to "IGN". Do you have a plan for dealing with
an OV condition?
[img]cid:1.2539953562(at)web120303.mail.ne1.yahoo.com[/img]
Bob . . .
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nuckolls.bob(at)aeroelect
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| Posted: Sun Feb 05, 2012 11:50 am Post subject: alternator wiring |
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At 12:23 PM 2/5/2012, you wrote:
| Quote: | Bob, thanks again for your help. I have an EXP-Bus that I am using
and in which I can connect for OV protection. Does the 10 o'clock
connection go to this bus?
|
The data was not helpful about the upper-left terminal . . .
given that it's an internally regulated alternator, I
haven't even got a good guess as to what that terminal
is for.
At 70A, it's certainly a robust alternator. But without
adding a b-lead disconnect contactor, this style
of alternator many not be controllable from outside
during a runaway OV event. Suggest you consider modifying
it for use with an external regulator, ov protection system
friendlier to airplanes.
Bob . . .
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kjohnsondds(at)yahoo.com
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| Posted: Tue Feb 07, 2012 4:11 am Post subject: alternator wiring |
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Bob,
The EXP-Bus does provide some OV protection. In reading information about its use, recommendations suggested not to go above 40 amps. I have planned to install a 40 amp fusable link before the bus. I also am installing both an amp meter and volt meter to monitor electrical flow. I know there are several alternatives. What would you recommend? Ken Johnson
From: "Robert L. Nuckolls, III" <nuckolls.bob(at)aeroelectric.com>
To: aeroelectric-list(at)matronics.com
Sent: Sunday, February 5, 2012 1:45 PM
Subject: Re: AeroElectric-List: alternator wiring
--> AeroElectric-List message posted by: "Robert L. Nuckolls, III" <nuckolls.bob(at)aeroelectric.com (nuckolls.bob(at)aeroelectric.com)>
At 12:23 PM 2/5/2012, you wrote:
| Quote: | Bob, thanks again for your help. I have an EXP-Bus that I am using and in which I can connect for OV protection. Does the 10 o'clock connection go to this bus?
|
The data was not helpful about the upper-left terminal . . .
given that it's an internally regulated alternator, I
haven't even got a good guess as to what that terminal
is for.
At 70A, it's certainly a robust alternator. But without
adding a b-lead disconnect contactor, this style
of alternator many not be controllable from outside
during a runaway OV event. Suggest you consider modifying
it for use with an external regulator, ov protection system
friendlier to airplanes.
Bo= --> http://www.matronics.com/Navigator?AeroElectric-L -->  ========================
[quote][b]
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nuckolls.bob(at)aeroelect
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| Posted: Tue Feb 07, 2012 6:32 am Post subject: alternator wiring |
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At 06:06 AM 2/7/2012, you wrote:
| Quote: | Bob,
The EXP-Bus does provide some OV protection.
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But is it compatible with internally regulated alternators?
| Quote: | In reading information about its use, recommendations suggested
not to go above 40 amps. I have planned to install a 40 amp
fusable link before the bus.
|
Not necessary and probably wouldn't perform as
desired. The EXP bus was crafted for much simpler/
smaller systems. It brings FAT WIRE distribution onto
etched circuit board traces which are vulnerable to
failure under continuous loads. Adding a fusible
is not necessary . . . you just need to limit the
number of electro-whizzies to 40A or less when
everything is turned on.
| Quote: | I also am installing both an amp meter and volt meter to monitor
electrical flow. I know there are several alternatives. What
would you recommend?
|
My personal choice would be to modify the alternator
for use with an external regulator. Check the
AeroElectric List archives for discussions on
internal failure modes that cannot be controlled
from outside the alternator except by gross
disconnection of the B-lead . . . which is difficult
at best.
An alternator that size will quickly push lots of energy
into your ship's electrical system. Legacy design goals
call for millisecond-fast response to such an event.
These design goals are satisfied by the use of external
regulation and ov protection like that depicted in
the 'Connection's z-figures -OR- modifications like those
crafted by Plane-Power.
Bob . . .
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