Re: Very smoky XPT

[David Johnson <trainman@ozemail.com.au>]

Maurie Daly wrote:

> Not totally related to XPT smoke , but does anyone know exactly how the XP
> power cars provide HEP for the rest of the train.
> I know they use an auxiliary generator which is driven by the main engine,but
> if this is the case how is the frequency maintained over the rev range of the
> engine ,

It isn't.  If you sit in the train, you can tell what power notch the driver is in
by listening to the air-conditioning speed.

> static invertors possibly.

nup

> Also , how much HP is drained from the main engine by the aux generator.

About 200.

> Also , do both power cars provide HEP , or just one .

Just one.  Usually the back one, so the driver's loco isn't running as fast, and
therefore quieter.

--
David Johnson
CityRail Guard
trainman@ozemail.com.au
http://www.ozemail.com.au/~trainman/