Re: Engine Voltage

["Ron Bennell" <rbennell@teleport.com>]

The voltage is variable and roughly proportional to engine revs.  I am not
sure of the specifics of an 81, but 2000 volts as a maximum would be
reasonable.  For a loco as modern as an 81 it is surprising to me that they
have a series/parallel transition.  I believe that most other Clyde/EMDs
with alternators run permanently connected in parallel.

"Deano" <dsma@pigpond.com> wrote in message
rKxA5.59705$c5.165486@newsfeeds.bigpond.com">news:rKxA5.59705$c5.165486@newsfeeds.bigpond.com...
> Which gets back to my original question, if it is say 1000 amps total at
600
> volts as suggested then that would represent an engine of 600kw which is
way
> too small for the rated capacity of the engine. For an 81 to be approx
> 2400kw when a total of 1200 amps is in use the applied voltage must be
2000,
> if the applied voltage is actually 600 then the figure of 1200 amps total
is
> approx a quarter of what  would have expected.
>
> "Donald R Smith" <drsmith@iinet.net.au> wrote in message
> 39d29b03$0$579@echo-01.iinet.net.au">news:39d29b03$0$579@echo-01.iinet.net.au...
> > Even though the ammeter is connected across one of the three series
> parallel
> > circuits the ammeter scale is calibrated to read the total load.  That
is
> > the scale is adjusted to read the three or six times accordingly.
> > Don
> >
> >
>
>