Re: 422's to Broken Hill

[Bob <alco@acay.com.au>]

The leading unit would need to be running (on or off line) for the AC unit to work.
The AC unit can draw as much as 80 amps (far too much to go thru a 27 pin mu cable).
If the relay was bypassed and the A/C run with the unit offline the batteries would
go flat in about an hour.

David Johnson wrote:

> The only effect would be that the Air Conditioner would probably not work.  It
> would have to run off 75VDC, and I don't know how the Control Jumpers are wired,
> but I doubt they would be able to charge the batteries with an A/C running.
> Does anyone know how it works?
>

A trial in the Hunter for fuel saving has lead to a direction that trailing unit be
shut down on empty coalies. In answer to someone elses point about fuel saving,
there would be a large difference in fuel consumption of a 422 offline between
Sydney and Broken Hill.
Cheers
Bob


> Yes, that is essentially possible.  When I was riding on quad 48s up North, the
> driver shut down the lead loco to reduce the noise and vibration.
>