Mailing List lml@lancaironline.net Message #54531
From: Colyn Case at earthlink <colyncase@earthlink.net>
Sender: <marv@lancaironline.net>
Subject: Re: [LML] Solid State Contactors -- SuperSwitch?
Date: Mon, 22 Feb 2010 23:09:24 -0500
To: <lml@lancaironline.net>
Hi Valin,
 
I looked at this seriously but at the time there was very limited information available on the web site for evaluating the failure mode.
My biggest concern about a starter contactor is that there is the potential for a dead short in the starter and I want to know I can get the thing turned off.  If you look at the dead short current on an Odyssey battery, it's impressive.  With a mechanical relay, you are counting on the spring to open the contacts.   With a solid state device you are hoping that it doesn't fail in a way that conducts current.   I don't know what this one does and couldn't figure it out so I passed.  Maybe one of the EE's on the list could provide some insight and know how to ask the question of the vendor.  (e.g. what heppens to your device when I give it 1500 amps for 1 sec?)
 
Colyn
 
Subscribe (FEED) Subscribe (DIGEST) Subscribe (INDEX) Unsubscribe Mail to Listmaster