Pete
1. Here is the wiring schematic which is stock Europa.
2. the "slow blow fuzes" in the diagram where replaced with 25A and 30A
Circuit breakers respectively
3. The spike occurred when I pulled the ALT circuit breaker while the
engine was running. I didn't leave it out for long because I was worried
about damage to the system.
4. I did not pull the battery CB at the same time.
So in summary the ALT CB, when pulled, shuts down the ALT feed to the bus.
My understanding was that one needed to be able to power the electrical
system from either the battery or the alternator alone in the case an
emergency.
Many thanks
Will
[image: Inline image 1]
William Daniell
LONGPORT
+57 310 295 0744
On Sat, Oct 7, 2017 at 3:16 PM, Pete <peterz@zutrasoft.com> wrote:
> Id need to see your wiring schematic, and understand exactly when this
> surge occurs....but there will be a surge if the capacitor is in a
> discharged state, and if there is a switch and shunt between the capacitor
> and the ducatti dump-regulator output, and this switch is closed after the
> engine is already running.
>
> On Oct 7, 2017, at 3:17 AM, William Daniell <wdaniell.longport@gmail.com>
> wrote:
>
> Pete
> thanks. Is this a problem/potential problem? Or is this a short term
> event?
> Will
>
> William Daniell
> LONGPORT
> +57 310 295 0744
>
> On Fri, Oct 6, 2017 at 2:31 PM, Pete <peterz@zutrasoft.com> wrote:
>
>>
>> Depending upon where the large capacitor is, yes, it could spike like
>> that of it was discharged.
>>
>> > On Oct 6, 2017, at 11:52 AM, William Daniell <
>> wdaniell.longport@gmail.com> wrote:
>> >
>> > I have a dynon skyview and the ammeter reads off the shunt per dynon
>> manual. My electrical system is standard europa without deviation and i
>> have a rotax 912
>> >
>> > The last time a flew when i started the engine had a red x over the
>> ammeter (ie not working) where it had worked on the previous flight.
>> >
>> > I pulled the alt 30A cb which reset the "instrument" and thereafter it
>> read normally. I left the 30A battery cb set during this process.
>> >
>> > My question: When I pulled the cb the amp reading, once it came alive,
>> spiked up to 60A. I immediately reset the cb and everything settled back
>> down to its normal readings.
>> >
>> > Is this spike normal?
>> >
>> > Thanks
>> >
>> > Will
>>
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