nuckolls.bob(at)aeroelect
Guest
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 Posted: Mon Oct 24, 2011 6:50 am Post subject: Z16 schematic 5 amp CB is popping. please help. |
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At 09:01 AM 10/24/2011, you wrote:
| Quote: |
I have wired my 701 as per Z16 schematic for the
Rotax. Up until now, as I have needed power to
test the panel I have put my S700-2-10 switch in
the middle battery position and then turned on
the main switch for power to the main bus.
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What 'main switch'?
| Quote: | Nothing remarkable happened. All was well. Now I
am ready to start my Rotax 912ul for the first
time. I put my S700 switch up to the full on “battery/alternator position”.
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That doesn't need to happen until after the
engine is started.
| Quote: | OK so far. Now I flip on the main power switch
as before to power the main bus but this time
the 5 amp circuit breaker pops within about ½ a
second. This has happened every time I have
tried it. I spent several hours yesterday
checking the connections to the S10, the S704
Alternater OV disconnect, rectifier and
capacitor. They seem to be correct. Any serious
rework would need the panel opened up. I'm talking “Can Opener”
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If the engine is not yet running, then the system
power is supplied by the battery at some value below
13.0 volts.
I seems that the ov protection is tripping as some
level of voltage much lower than it's design point
of 16.4.
| Quote: | Any thoughts on what wiring mistake could cause the circuit breaker to pop?
I understand what a difficult question this is
to answer based on the info I have given.
However, I'm hoping this could be an obvious
“no brainer” fix to you experts. Possibly a
common error for electrical idiots. Please
phrase any advice as you would for a 5 year old.
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I'm having trouble visualizing the switches
you describe. Are you wired per Z-16 with no
additional switches?
| Quote: | Secondly. What is the downside of removing the
S704 Alternator OV disconnect entirely…..Geoff
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No OV protection.
Bob . . .
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