Hi Roman,

What I suspect,  but don't know is that the Regulator also needs 12V
power to run it.

i.e. Perhaps one of the two unknown wires is the Alternator Lamp and the
other powers the unit.  The lamp is on when the alternator isn't
producing AC and goes out once the alternator is providing more than 14V
or something like that.

On the power waste type.  That type would also be used for Wind Mill
Chargers I would guess so that even in extreme wind conditions and fully
charged batteries maximum load would be provided to prevent overspeeding
and not burn out some sort of overspeed brake.


I imagine if I attach this PM alternator to a 1725 RPM furnace motor I
might see a fairly high open circuit voltage.  That implies too that the
regulator needs to have either a high enough rating or transorbs to pull
down the voltage before the input circuit pops.

On a boat it's possible to switch between battery bank A and B to off so
the  regulator could go out of the circuit briefly while the Diesel
Engine is still turning.  Catastrophe for the regulator and associated
electronics on the 12V bus.  I think the term is "Load Dump" and we
don't want to do that but it can happen.

Time to rig up fan motor I guess.

John

>
> Hi John, I don't know the specific regulator you
> have but i'm concerned it may NOT be for that
> alternator. Normally a PM "simple" alternator
> has a matching regulator, a shunt (power waste)
> type. There should only be the 2 blue wires in
> and red/black out. I've seem similar systems on
> many of the modern motorcyces, although they are
> usually 3 phase PM, yours is 1 phase.
> The yellow/green wires on you regulator sound
> like the colours I would expect for connection to
> the field coil, which your alternator doesn't
> have.
> -Roman
>
>
> John Dammeyer wrote:
>
> > I have a Shibaura Alternator assembly and Regulator that I
> acquired for
> > my sailboat diesel engine.  It's a permanent magnet type
> Alternator part
> > # 185046210 and Regulator part #185516060  (Just in case
> someone has the
> > correct manuals).  I was told it's a 15A Alternator.
> >
> > The Alternator has two Blue leads that create the AC for
> the Regulator.
> >
> > The Regulator has six wires:
> >
> > two light Blue
> > Black
> > Red
> > Yellow
> > Green
>
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