Hi Ron and all,
> If wired as per Europa, primary will run as long as generator and
> regulator is functioning.
>
Failure of the regulator is not an unlikely event. That's why I considered this
case when designing the circuit.
My purpose was to prevent a regulator failure from becoming an engine emergency.
> Take a look at Europa 914 schematic so we are on same page:
> http://www.europa-aircraft.biz/pdfs/buildersmanuals/CBM%20-
> %2025%20-%20ELECTRICAL%20SYSTEM.pdf
> On page #11
>
> Unless B+ was shorted at regulator, by closing alternator output
> switchpower to primary pump will be provided from the battery
> should the
> regulator fail, or OVP take it off line.
>
How is your OVP wired ? If it is of the crowbar type, doesn't it disconnect the
offending generator/regulator unit from the ship's circuit ?
How is the "OV regulator failure" case managed ?
Of course, it is up to each builder to chose the degree of redundancy he is
willing
to build into his systems.
Best regards,
Gilles
htttp://contrails.free.fr
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