Groups > sci.electronics.design > #481496

Re: Contactors/Relays

Newsgroups	sci.electronics.design
Date	2017-10-15 09:19 -0700
References	<ortkap$p11$1@reader2.panix.com> <6f291332-d241-4006-a9f3-253ebf4a7c8e@googlegroups.com> <orul4n$ap9$1@reader2.panix.com> <MPG.344d51c2870d58d398a050@news.eternal-september.org>
Message-ID	<7cd92694-4c8b-41ae-b126-dfd5c84bac97@googlegroups.com> (permalink)
Subject	Re: Contactors/Relays
From	mpm <mpmillard@aol.com>

Show all headers | View raw

On Sunday, October 15, 2017 at 12:00:55 PM UTC-4, M Philbrook wrote:

> look at 3 pole lighting contactors.
> 
> Also, automatic transfer switch 3 pole contactors.

What Philbrook said:
Automatic transfer switch.
Some manufacturers I've had GOOD experience with:
Onan / Cummins
Russelectric (Expensive!, but wonderful equipment!!)
Caterpillar / CAT
Koheler, but I don't recall if they make their own 3-Ph units?

"OK" Experience:
Camsco  https://www.camsco.com.tw/automatic-transfer-switch/w2h-250a.html 
Generac (except for their big 50kW+ LPG/Propane generators, which are crap!)

BAD Experience:
Zenith - Holds the World Record for sloppiest re-transfer in-sync monitor.
(Actually, the phase monitor ain't bad, it's the switch that truly sucks!)
They probably don't even make these anymore?

The above assumes a one-off "project".
If you're looking to roll-your-own design, then ignore the above - although researching the respective designs may give you some ideas.

Back to sci.electronics.design | Previous | Next — Previous in thread | Next in thread | Find similar

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 legg <legg@nospam.magma.ca> - 2017-10-14 15:52 -0400
  Re: Contactors/Relays legg <legg@nospam.magma.ca> - 2017-10-14 16:20 -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 edward.ming.lee@gmail.com - 2017-10-16 08:48 -0700
  Re: Contactors/Relays Hul Tytus <ht@panix.com> - 2017-10-14 21:20 +0000
  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