Re: (ET) field rev.

[David C Robie <mycroftxx1 juno com>]

This is why there were E16's

Dave
Weymouth MA


On Fri, 14 Jul 2006 09:48:47 -0400 Christopher Zach <czach computer org>
writes:
> Konstanty, Walter (GE Indust, ConsInd) wrote:
> > Some Design theory inputs for a Friday morning:
> > 
> > - It's less costly to reverse the field polarity to make the motor 
> reverse.  Smaller contactor required.
> 
> Mmm... Like everything else, relative. While true the field current 
> is 
> lower, when you switch it you still will get arcing across the 
> switch 
> point. If it's a little relay, it's going to weld shut at some point 
> 
> (cf: all the E15's in the world)
> 
> They still should have used contactors on the E15.
> 
> Chris
> 
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