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Re: [BRHSlist] Digest Number 1858

To: BRHSlist@yahoogroups.com
Subject: Re: [BRHSlist] Digest Number 1858
From: William Barber <clipperw@EarthLink.net>
Date: Tue, 28 Oct 2003 23:12:01 -0600
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The current always come from the main generator or alternator and, on 
most EMD locomotives, the engine speed comes up, usually to run 3 to 
provide cooling air for the traction motors which are operating as 
generators during DB. The traction motor cooling fans are mechanically 
driven on some locomotives and AC motor driven on others using power 
from the D14 alternator.

Bill Barber

On Tuesday, October 28, 2003, at 12:00 PM, BRHSlist@yahoogroups.com 
wrote:

> ADuring dynamic braking the motor field windings are powered either
> through the batteries or the current generated from the generator and
> the diesel idling.


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