X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Wed, 24 Feb 2010 08:14:41 -0500 Message-ID: X-Original-Return-Path: Received: from elasmtp-banded.atl.sa.earthlink.net ([209.86.89.70] verified) by logan.com (CommuniGate Pro SMTP 5.3.2) with ESMTP id 4135442 for lml@lancaironline.net; Tue, 23 Feb 2010 16:42:50 -0500 Received-SPF: none receiver=logan.com; client-ip=209.86.89.70; envelope-from=colyncase@earthlink.net DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=dk20050327; d=earthlink.net; b=bOKtbXKjg2A59zDj9qUBIY6+XsDs/WJQznKBqMgb02v10h3Uvpu5kV+5+9DeLFl6; h=Received:Message-ID:From:To:References:Subject:Date:MIME-Version:Content-Type:X-Priority:X-MSMail-Priority:X-Mailer:X-MimeOLE:X-ELNK-Trace:X-Originating-IP; Received: from [216.57.118.178] (helo=ccaselt3) by elasmtp-banded.atl.sa.earthlink.net with esmtpa (Exim 4.67) (envelope-from ) id 1Nk2WF-0002JB-9z for lml@lancaironline.net; Tue, 23 Feb 2010 16:42:15 -0500 X-Original-Message-ID: From: "Colyn Case at earthlink" X-Original-To: "Lancair Mailing List" References: Subject: Re: [LML] Re: Solid State Contactors -- SuperSwitch? X-Original-Date: Tue, 23 Feb 2010 16:42:14 -0500 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0108_01CAB4A7.2755E840" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.5843 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.5579 X-ELNK-Trace: 63d5d3452847f8b1d6dd28457998182d7e972de0d01da940f8f296b6a3b67bc46c4ee6bc6ee6b590350badd9bab72f9c350badd9bab72f9c350badd9bab72f9c X-Originating-IP: 216.57.118.178 This is a multi-part message in MIME format. ------=_NextPart_000_0108_01CAB4A7.2755E840 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable oops I meant Wide not Side below ----- Original Message -----=20 From: Colyn Case at earthlink=20 To: lml@lancaironline.net=20 Sent: Tuesday, February 23, 2010 2:50 PM Subject: [LML] Re: Solid State Contactors -- SuperSwitch? re: the ev-200. It's impressive on a number of metrics: max break = current, hold current to name a couple. It turns out they have a lower cost line, the ev-100. This does not = have the extra-low hold current feature and can't handle quite as big a load. A mix of ev-200's and ev-100's may = be appropriate for a grid. re: mechanical contactors. There is a very wide range in specs and = mechanical integrity. Although I went with the ev-200 myself I suspect a very beefy white-rodgers would be less = likely to have the stuck closed behavior described below. ------=_NextPart_000_0108_01CAB4A7.2755E840 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
oops I meant Wide not Side = below
----- Original Message -----
From:=20 Colyn=20 Case at earthlink
Sent: Tuesday, February 23, = 2010 2:50=20 PM
Subject: [LML] Re: Solid State = Contactors=20 -- SuperSwitch?

re: the ev-200.   It's = impressive on a=20 number of metrics:   max break current, hold current to name = a=20 couple.
It turns out they have a lower cost = line, the=20 ev-100.  This does not have the extra-low hold current feature=20 and
can't handle quite as big a = load.   A=20 mix of ev-200's and ev-100's may be appropriate for a = grid.
 
re: mechanical = contactors.   =20 There is a very wide range in specs and mechanical=20 integrity.   Although I went with
the ev-200 myself I suspect a very = beefy=20 white-rodgers would be less likely to have the stuck closed behavior = described=20 below.
 
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