Sorry if I didn't explain my thinking very well. I had just recovered from a
hardware
failure on the computer. 12Gb of lost data and 2 days of nail biting recovery
and deadlines to meet!
Given that I wished to isolate the battery locally, it occurred to me to use a
parallel contactor of lower rating once the engine had started and I checked out
a 70A type of very high reliability that I had used before. In this way the
main contactor is only used to start the engine and the 70A type used basically
to carry the battery charge current in normal use .... the latter runs barely
warm. A simple circuit determines when each should be in use. This is tied
in with automatic bus isolation of the avionics and Navaid wing leveller during
starting. The manufacturers of the latter particulary request it, although
there are differing views as to whether it is needed on the former with modern
avionics and engine systems.
Maybe I have missed something, or I am being over cautious but that is the
thinking!!
And yes, Bob Nuckolls book is essential and excellent!
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and 2 days of nail biting recovery and deadlines to meet!
trouble but still a possibility!
systems.
over cautious but that is the thinking!!
excellent!
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