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nuckolls.bob(at)aeroelect Guest
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Posted: Mon Jul 21, 2014 7:02 am Post subject: Crowbar OV module placement |
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At 07:25 AM 7/21/2014, you wrote:
Quote: |
yes I'm using the B&C schematic with an external regulator ,(no
changes) it says to hook the ovm to regulator in & to the master switch .
I want to hook it to the field which has a five amp breaker .
I'm asking why I can't do that instead of the regulator in?
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The crowbar ov module functions by creating
a high current (artificial fault) on the field
voltage supply line for the purpose of
forcing the field supply breaker open . . .
thus depriving the alternator of field
excitation an shutting it down.
That 'fault' may be applied anywhere along
the supply line between the breaker and
the regulator's input terminal.
What kind of regulator are you using?
You mentioned something to the effect that
a 5A breaker seemed inadequate to getting
the alternator to come alive? You need
to get the alternator working first using
details from the B&C drawing . . . the
breaker sizes cited are correct.
After the alternator is working, then add
the OV module at any point along the field
excitation power path.
Bob . . .
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acub(at)neo.rr.com Guest
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Posted: Mon Jul 21, 2014 9:34 am Post subject: Crowbar OV module placement |
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The regulator is the solid-state supplied from InterAv as a kit to work with the Motorola Alternator i'm using the schematic of the interAv system and hooking up the OVM from the B&C system if I can hook to the field on the InterAv system then all my troubles are over that's what I wanted to do
the mention of the 5 amp not kicking the regulator in just disregard ! that was a whole Nother scenario!
do you still recommend me to change to a voltage limiter on the firewall as suggested before? if not I'm done ,I have it accomplished! Thank you again!!
John
Sent from my iPhone
Quote: | On Jul 21, 2014, at 11:01 AM, "Robert L. Nuckolls, III" <nuckolls.bob(at)aeroelectric.com> wrote:
At 07:25 AM 7/21/2014, you wrote:
>
>
> yes I'm using the B&C schematic with an external regulator ,(no changes) it says to hook the ovm to regulator in & to the master switch .
> I want to hook it to the field which has a five amp breaker .
> I'm asking why I can't do that instead of the regulator in?
The crowbar ov module functions by creating
a high current (artificial fault) on the field
voltage supply line for the purpose of
forcing the field supply breaker open . . .
thus depriving the alternator of field
excitation an shutting it down.
That 'fault' may be applied anywhere along
the supply line between the breaker and
the regulator's input terminal.
What kind of regulator are you using?
You mentioned something to the effect that
a 5A breaker seemed inadequate to getting
the alternator to come alive? You need
to get the alternator working first using
details from the B&C drawing . . . the
breaker sizes cited are correct.
After the alternator is working, then add
the OV module at any point along the field
excitation power path.
Bob . . .
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nuckolls.bob(at)aeroelect Guest
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Posted: Mon Jul 21, 2014 5:37 pm Post subject: Crowbar OV module placement |
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At 12:27 PM 7/21/2014, you wrote:
The regulator is the solid-state supplied from InterAv as a kit to
work with the Motorola Alternator i'm using the schematic of the
interAv system and hooking up the OVM from the B&C system if I can
hook to the field on the InterAv system then all my troubles are over
that's what I wanted to do
Very good.
the mention of the 5 amp not kicking the regulator in just
disregard ! that was a whole Nother scenario!
do you still recommend me to change to a voltage limiter on the
firewall as suggested before? if not I'm done ,I have it
accomplished! Thank you again!!
If you have a 60A breaker already installed and
wired, leave it.
Pleased to have a clearer picture of what you were
wrestling with.
Bob . . .
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