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1. 07:05 AM - Z16 schematic 5 amp CB is popping. please help. (Geoff Heap)
2. 07:50 AM - Re: Z16 schematic 5 amp CB is popping. please help. (Robert L. Nuckolls, III)
Message 1
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| Subject: | Z16 schematic 5 amp CB is popping. please help. |
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.
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. 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 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
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.
Secondly. What is the downside of removing the S704 Alternator OV disconnect entirely..Geoff
--------
Dual controls. Dynon 180. Icom 210 Garmin 296. Becker transponder. Sigtronics intercom.
Electric flaperons.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=355861#355861
Message 2
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| Subject: | Re: Z16 schematic 5 amp CB is popping. please help. |
At 09:01 AM 10/24/2011, you wrote:
>
>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.
What 'main switch'?
>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.
That doesn't need to happen until after the
engine is started.
>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 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
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.
>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.
I'm having trouble visualizing the switches
you describe. Are you wired per Z-16 with no
additional switches?
>Secondly. What is the downside of removing the
>S704 Alternator OV disconnect entirely..Geoff
No OV protection.
Bob . . .
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