Re: Contactor questions
Subject: Re: Contactor questions
From: "SROYS" <SROYS-at-radiology.ab.umd.edu>
Date: Fri, 20 Oct 1995 10:56:12 EDT
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> This should be ok as you will probably be using a variac to power the
> system. When you energize the contactors, the variac shold be off
> and very little current will flow. You won't have many amps flowing
> until you get the variac up to full power.
This is the mode of operation that I will employ. In the case of a
runaway system, I will (hopefully) have the presence of mind crank the
variac down before hitting the "panic" button to open the contactors.
That way, I can prevent things from welding shut and "letting a bunch of
Clydesdales romp and play".
I can't see this even being a problem for now since I'm sure that I will
be running under 30A for a while. By the time I work up to the 50A plug,
I will probably have picked up some heavier duty contactors.
Steven Roys (sroys-at-radiology.ab.umd.edu)