Subject: [FlyRotary]
Re: Alternator drawing current at rest.
Yep, that was the problem. I had it wired so
that the field windings were active whenever there was power to the
system. I did that to cut down on audio noise, but have decided to
bring the field lead back into the cabin so I can control it. Will add a filter
and live with the remaining noise.
Dave Leonard
Dave;
I don’t think the field current is
a noise issue; it’s the output that can be noisy. I think you’d
like to have the field supply come to a breaker on the panel, with a ‘crowbar’
over voltage protection. I used a 7.5A pullable breaker, so on a occasion
where I might be sitting with the engine off, and the power on for
extended duration for some reason (like figuring out how to program the flight
plan into the GPS), I can pull the breaker to reduce the battery draw.
Al
On 8/5/07, Al Gietzen <ALVentures@cox.net>
wrote:
Subject:
[FlyRotary] Alternator drawing current at rest.
That current draw for the coils did seem high, so I
checked further into it. Turns out it is the alternator drawing the 3
amps, not the coils. It gets warm to the touch. Is that normal?
Dave Leonard
Sounds about
right. I measured the field winding draw at about 2.5 A, engine off.
Al
--
David Leonard
Turbo Rotary RV-6 N4VY
http://N4VY.RotaryRoster.net
http://RotaryRoster.net