Today's Message Index:
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1. 09:33 AM - Re: OVM-14 question (Robert L. Nuckolls, III)
2. 12:43 PM - Re: OVM-14 question (Robert L. Nuckolls, III)
3. 07:38 PM - Re: OVM-14 question (Robert L. Nuckolls, III)
Message 1
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| Subject: | Re: OVM-14 question |
At 01:30 PM 11/25/2019, you wrote:
>Sorry to bother you off the list but I couldn't
>get logged in. I know you prefer questions to be
>posted so everybody can learn. feel free to post
>this if you like. Hope you have an great Thanks giving week!
Thank you sir.
>I'm doing 2 electrical energized field
>alternators (small frame 53A), one adjustable
>regulator,=C2 one non adjustable regulator, 2
>OVM-14 modules, one battery off the Z13/8 dwg.
If you have two, hefty alternators then
Z12 is the better option.
>I have two 5 amp Klixon circuit breakers for the fields.
Okay
>My question is about the OVM-14. If both
>alternators were in output mode due to low
>voltage then one went into over voltage, how do
>I get the OVM-14s to only trip the circuit for
>the one that is over voltage? It seems like both
>field circuits would trip the CB.
You don't run both alternators at the same time.
Run only the main alternator until you get a
low volts warning then turn main alternator
OFF, aux alternator ON>
>Second question is about eBus.
>
>I have Circuit breakers for many things. Instead
>of a second bus, I was thinking of a momentary
>switch connected to the load side of all things
>that could be shut off in battery saving mode.
>Pressing the switch would trip the breakers for
>unnecessary items which could be individually
>turned back on if required. would a switch be
>adequate or should a 704-1 relay be used to handle the shorting load.
I'm curious as to why Z12 is un-attractive as-published?
What shortcomings in Z12 beg rectification?
Also, aside from crow-bar field breakers, why
not fuse blocks? Breakers take up space, add
a lot of fabrication/installation labor, don't
work any better than a fuse. 99.9% of all breakers
installed at the factory go to the scrap yard
never having been required to keep a wire from
smoking. Why so much investment in a feature
that adds nothing to the utility/reliability
of your airplane?
Bob . . .
Message 2
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| Subject: | Re: OVM-14 question |
At 01:30 PM 11/25/2019, you wrote:
>Sorry to bother you off the list but I couldn't
>get logged in. I know you prefer questions to be
>posted so everybody can learn. feel free to post
>this if you like. Hope you have an great Thanks giving week!
Thank you sir.
>I'm doing 2 electrical energized field
>alternators (small frame 53A), one adjustable
>regulator,=C2 one non adjustable regulator, 2
>OVM-14 modules, one battery off the Z13/8 dwg.
If you have two, hefty alternators then
Z12 is the better option.
>I have two 5 amp Klixon circuit breakers for the fields.
Okay
>My question is about the OVM-14. If both
>alternators were in output mode due to low
>voltage then one went into over voltage, how do
>I get the OVM-14s to only trip the circuit for
>the one that is over voltage? It seems like both
>field circuits would trip the CB.
You don't run both alternators at the same time.
Run only the main alternator until you get a
low volts warning then turn main alternator
OFF, aux alternator ON>
>Second question is about eBus.
>
>I have Circuit breakers for many things. Instead
>of a second bus, I was thinking of a momentary
>switch connected to the load side of all things
>that could be shut off in battery saving mode.
>Pressing the switch would trip the breakers for
>unnecessary items which could be individually
>turned back on if required. would a switch be
>adequate or should a 704-1 relay be used to handle the shorting load.
I'm curious as to why Z12 is un-attractive as-published?
What shortcomings in Z12 beg rectification?
Also, aside from crow-bar field breakers, why
not fuse blocks? Breakers take up space, add
a lot of fabrication/installation labor, don't
work any better than a fuse. 99.9% of all breakers
installed at the factory go to the scrap yard
never having been required to keep a wire from
smoking. Why so much investment in a feature
that adds nothing to the utility/reliability
of your airplane?
Bob . . .
Message 3
| INDEX | Back to Main INDEX |
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| Subject: | Re: OVM-14 question |
At 01:30 PM 11/25/2019, you wrote:
>Sorry to bother you off the list but I couldn't
>get logged in. I know you prefer questions to be
>posted so everybody can learn. feel free to post
>this if you like. Hope you have an great Thanks giving week!
Thank you sir.
>I'm doing 2 electrical energized field
>alternators (small frame 53A), one adjustable
>regulator,=C2 one non adjustable regulator, 2
>OVM-14 modules, one battery off the Z13/8 dwg.
If you have two, hefty alternators then
Z12 is the better option.
>I have two 5 amp Klixon circuit breakers for the fields.
Okay
>My question is about the OVM-14. If both
>alternators were in output mode due to low
>voltage then one went into over voltage, how do
>I get the OVM-14s to only trip the circuit for
>the one that is over voltage? It seems like both
>field circuits would trip the CB.
You don't run both alternators at the same time.
Run only the main alternator until you get a
low volts warning then turn main alternator
OFF, aux alternator ON>
>Second question is about eBus.
>
>I have Circuit breakers for many things. Instead
>of a second bus, I was thinking of a momentary
>switch connected to the load side of all things
>that could be shut off in battery saving mode.
>Pressing the switch would trip the breakers for
>unnecessary items which could be individually
>turned back on if required. would a switch be
>adequate or should a 704-1 relay be used to handle the shorting load.
I'm curious as to why Z12 is un-attractive as-published?
What shortcomings in Z12 beg rectification?
Also, aside from crow-bar field breakers, why
not fuse blocks? Breakers take up space, add
a lot of fabrication/installation labor, don't
work any better than a fuse. 99.9% of all breakers
installed at the factory go to the scrap yard
never having been required to keep a wire from
smoking. Why so much investment in a feature
that adds nothing to the utility/reliability
of your airplane?
Bob . . .
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