[SEL] Early Switchboard Meters and Switchgear - getting way OT

enginepaul at aol.com enginepaul at aol.com
Sat Jul 16 15:07:12 PDT 2005


 Your computer keyboard has what we used to call "no bounce switches" to prevent keystrokes from repeating.
 
-----Original Message-----
From: John Culp <johnculp at chartertn.net>
To: The SEL email discussion list <sel at lists.stationary-engine.com>
Sent: Sat, 16 Jul 2005 14:12:58 -0400
Subject: Re: [SEL] Early Switchboard Meters and Switchgear


> Quick breaks were fitted to DC switches to prevent arcing across as 
> the load current was broken. It's still a problem, even today! 
 
Direct current still works pretty much the same way as it has for a long time. 
 
John Culp 
Bristol, Tennessee, USA 
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