Groups > sci.electronics.design > #482482

Re: Contactors/Relays

From	David Lesher <wb8foz@panix.com>
Newsgroups	sci.electronics.design
Subject	Re: Contactors/Relays
Date	2017-10-22 18:59 +0000
Organization	NRK Clinic for habitual NetNews Abusers - Beltway Annex
Message-ID	<osipqg$fjn$1@reader2.panix.com> (permalink)
References	(8 earlier) <iujmuc5da0t05k9ftcrt02qevh52bglbpc@4ax.com> <7wKGB.9076$AK1.3324@fx28.iad> <m0vmuc9so1fb9kfamo5lbp1odg57t6l55o@4ax.com> <LFQGB.52081$6V2.4304@fx21.iad> <ud6pucp2nrhgr9bjei0ub203lqdrh7qqbd@4ax.com>

Show all headers | View raw

legg <legg@nospam.magma.ca> writes:

>I've followed this thread and its predecessor pretty closely,
>but have yet to see any app info save:

>'240 VAC resistive; we are interupting both sides of a 240V   '
>'circuit.  I need 2 or 3P.                                    '

>Of course the question is, what happens if you can not open
>one or either of these terminals, when required? That's the
>'failed' condition, and one that is difficult to to comprehend
>as being 'safe'.

That's because you only know the small part; not the big
picture. You (& others...) assume too much. The bad thing is not
when the downstream is powered, it's when it's not able to be
powered.

Alas, I'm getting convinced that no one makes the hardware I
seek. The closest I've found are several quite pricy 100A+
contactors with 2 poles NO and 2 NC. I guess I spec two
of them for 3 ph. loads.

-- 
A host is a host from coast to coast.................wb8foz@nrk.com
& no one will talk to a host that's close..........................
Unless the host (that isn't close).........................pob 1433
is busy, hung or dead....................................20915-1433

Thread

Contactors/Relays David Lesher <wb8foz@panix.com> - 2017-10-14 18:16 +0000
  Re: Contactors/Relays legg <legg@nospam.magma.ca> - 2017-10-14 15:38 -0400
    Re: Contactors/Relays David Lesher <wb8foz@panix.com> - 2017-10-18 22:32 +0000
      Re: Contactors/Relays legg <legg@nospam.magma.ca> - 2017-10-18 23:11 -0400
        Re: Contactors/Relays David Lesher <wb8foz@panix.com> - 2017-10-19 06:11 +0000
          Re: Contactors/Relays legg <legg@nospam.magma.ca> - 2017-10-19 15:02 -0400
            Re: Contactors/Relays rickman <gnuarm@gmail.com> - 2017-10-19 18:48 -0400
              Re: Contactors/Relays legg <legg@nospam.magma.ca> - 2017-10-19 23:02 -0400
                Re: Contactors/Relays rickman <gnuarm@gmail.com> - 2017-10-20 00:49 -0400
                Re: Contactors/Relays legg <legg@nospam.magma.ca> - 2017-10-20 12:03 -0400
                Re: Contactors/Relays rickman <gnuarm@gmail.com> - 2017-10-20 13:17 -0400
                Re: Contactors/Relays legg <legg@nospam.magma.ca> - 2017-10-21 09:52 -0400
                Re: Contactors/Relays Michael A Terrell <mike.terrell@earthlink.net> - 2017-10-21 12:23 -0400
                Re: Contactors/Relays legg <legg@nospam.magma.ca> - 2017-10-21 13:00 -0400
                Re: Contactors/Relays Michael A Terrell <mike.terrell@earthlink.net> - 2017-10-21 19:23 -0400
                Re: Contactors/Relays legg <legg@nospam.magma.ca> - 2017-10-22 09:24 -0400
                Re: Contactors/Relays David Lesher <wb8foz@panix.com> - 2017-10-22 18:59 +0000
                Re: Contactors/Relays David Lesher <wb8foz@panix.com> - 2017-10-22 06:25 +0000
                Re: Contactors/Relays David Lesher <wb8foz@panix.com> - 2017-10-26 05:00 +0000
                Re: Contactors/Relays legg <legg@nospam.magma.ca> - 2017-10-29 13:23 -0400
                Re: Contactors/Relays Michael A Terrell <mike.terrell@earthlink.net> - 2017-10-30 16:04 -0400
                Re: Contactors/Relays David Lesher <wb8foz@panix.com> - 2017-11-03 06:07 +0000
      Re: Contactors/Relays upsidedown@downunder.com - 2017-10-19 13:00 +0300
        Re: Contactors/Relays David Lesher <wb8foz@panix.com> - 2017-10-22 06:23 +0000
        Re: Contactors/Relays David Lesher <wb8foz@panix.com> - 2017-10-26 05:04 +0000
  Re: Contactors/Relays legg <legg@nospam.magma.ca> - 2017-10-14 15:52 -0400
    Re: Contactors/Relays David Lesher <wb8foz@panix.com> - 2017-10-19 06:03 +0000
  Re: Contactors/Relays legg <legg@nospam.magma.ca> - 2017-10-14 16:20 -0400
    Re: Contactors/Relays David Lesher <wb8foz@panix.com> - 2017-10-19 06:04 +0000
      Re: Contactors/Relays rickman <gnuarm@gmail.com> - 2017-10-19 03:49 -0400
        Re: Contactors/Relays David Lesher <wb8foz@panix.com> - 2017-10-22 06:18 +0000
          Re: Contactors/Relays rickman <gnuarm@gmail.com> - 2017-10-22 03:57 -0400
  Re: Contactors/Relays edward.ming.lee@gmail.com - 2017-10-14 14:15 -0700
    Re: Contactors/Relays David Lesher <wb8foz@panix.com> - 2017-10-15 03:36 +0000
      Re: Contactors/Relays M Philbrook <jamie_ka1lpa@charter.net> - 2017-10-15 12:07 -0400
        Re: Contactors/Relays mpm <mpmillard@aol.com> - 2017-10-15 09:19 -0700
          Re: Contactors/Relays David Lesher <wb8foz@panix.com> - 2017-10-19 06:10 +0000
        Re: Contactors/Relays David Lesher <wb8foz@panix.com> - 2017-10-19 06:08 +0000
      Re: Contactors/Relays edward.ming.lee@gmail.com - 2017-10-16 08:48 -0700
    Re: Contactors/Relays David Lesher <wb8foz@panix.com> - 2017-10-19 06:06 +0000
  Re: Contactors/Relays Hul Tytus <ht@panix.com> - 2017-10-14 21:20 +0000
    Re: Contactors/Relays David Lesher <wb8foz@panix.com> - 2017-10-19 06:07 +0000
      Re: Contactors/Relays legg <legg@nospam.magma.ca> - 2017-10-19 23:11 -0400
  Re: Contactors/Relays John Larkin <jjlarkin@highlandtechnology.com> - 2017-10-14 16:43 -0700
  Re: Contactors/Relays upsidedown@downunder.com - 2017-10-15 10:20 +0300
  Re: Contactors/Relays Neon John <no@never.com> - 2017-10-15 09:49 -0400

csiph-web