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kesleyelectric(at)chooseb
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 Posted: Sun Feb 11, 2007 3:37 pm Post subject: low voltage sense lead location |
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Bob,
I remember some time ago a discussion regarding the location of the low voltage sense lead of the LR3C regulator. I cannot find it in the archives, so I will bring it up. Should the voltage sense lead be on the main or endurance bus? I am planning Z13/8 with an SD8 on the vacuum pad, VFR. If the most useful place is the main bus, would a low voltage indicator like the one Eric sells on the Perihelion site work to monitor the E-bus. I realize that with the reliability of alternators/dynamos and a properly maintained battery, the chances of failure to that level are quite small. I'm at the point where I need to pursue this or dismiss it and dump it out of the worry bucket. Also, can the LR3C lamp be converted to a LED to match the rest of the annunciators? Thanks for your help.
Regards,
Tom Barter
[quote][b]
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nuckollsr(at)cox.net
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| Posted: Sun Feb 11, 2007 7:45 pm Post subject: low voltage sense lead location |
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To: "Aeroelectric-list" <aeroelectric-list(at)matronics.com>
Subject: low voltage sense lead location
Bob,
I remember some time ago a discussion regarding the location of the low
voltage sense lead of the LR3C regulator. I cannot find it in the
archives, so I will bring it up. Should the voltage sense lead be on the
main or endurance bus?
WIRE IT PER INSTRUCTIONS . . . on the main bus. This is
also the voltage regulator sense lead.
I am planning Z13/8 with an SD8 on the vacuum pad, VFR. If the most useful
place is the main bus, would a low voltage indicator like the one Eric
sells on the Perihelion site work to monitor the E-bus. I realize that
with the reliability of alternators/dynamos and a properly maintained
battery, the chances of failure to that level are quite small. I'm at the
point where I need to pursue this or dismiss it and dump it out of the
worry bucket. Also, can the LR3C lamp be converted to a LED to match the
rest of the annunciators? Thanks for your help.
One never needs a low voltage warning for the e-bus . . .
'cause when you're down to e-bus operations, there are
no alternators on line and you're GUARANTEED to have
a low voltage warning light flashing.
You need a voltmeter on the e-bus since this is a
sort of 'gas gage' for battery only ops. It will also
monitor the health of the SD-8 during times when it's
being used to replace an inop main alternator.
Yes, but you need a couple of resistors to make the
LED compatible with the incandescent lamp driver
in the LR-3. See:
http://www.aeroelectric.com/Pictures/Schematics/LV_Led.jpg
Bob . . .
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