The Cyber-Spy.Com Usenet Archive Feeds Directly From The Open And Publicly Available Newsgroup Sci.Electronics.Design
This Group And Thousands Of Others Are Available On Most IS NNTP News Servers On Port 119.
Cyber-Spy.Com Is NOT Responsible For Any Topic, Opinions Or Content Posted To This Or Any Other Newsgroup. This Web Archive Of The Newsgroup And Posts Are For Informational Purposes Only.
From: John Woodgate
Newsgroups: sci.electronics.design
Subject: Re: High DC current Transfer Switch
Date: Tue, 26 Nov 2002 08:06:06 +0000
Organization: JMWA Electronics Consultancy
Message-ID:
References: <3de2e06c.356268890@news.ev1.net>
Reply-To: John Woodgate
NNTP-Posting-Host: jmwa.demon.co.uk
Mime-Version: 1.0
NNTP-Posting-Date: Tue, 26 Nov 2002 08:27:52 +0000 (UTC)
X-Newsreader: Turnpike (32) Version 4.01 <5Z8C9wtxbnpWyFnyfFzqmVF739>
I read in sci.electronics.design that rtjoseph@ev1.net wrote (in
<3de2e06c.356268890@news.ev1.net>) about 'High DC current Transfer
Switch', on Tue, 26 Nov 2002:
>I have some applications where I take 480 VAC, rectify it and delivery
>it to a resistive load. The system range from 50 KVA to 300 KVA. DC
>volts range from 30 to 120 V (not necessarily perportional to power).
>
>Often, I will provide two parallel systems ( 2 X 100%) so one train
>may be taken off line so the load can be worked on. It has been
>traditional to provide a transformer/rectifier set for each train. It
>would seem that there must be a cost effective way to utilize a DC
>transfer switch in lieu of multiple transformer/rectifier sets. I
>would be happy to consider auto and manual switches.
>
>I am also open to the transfer switch be of the non-interrupting type.
>It is OK to de-energize the whole system prior to transfer. I am open
>to this method, although I am not sure it is the safest method.
>
>All considerations would be appreciated.
>
>Ray
>
A 10 000 A switch isn't electronics, it's civil engineering. (;-)
Do you seriously think that even s.e.d is the right place to get advice
on such a project? You need to go to major high-power electrical
engineering equipment manufacturers.
--
Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk
Interested in professional sound reinforcement and distribution? Then go to
http://www.isce.org.uk
PLEASE do NOT copy news posts to me by E-MAIL!
Go Back To The Cyber-Spy.Com Usenet Web Archive Index Of The sci.electronics.design Newsgroup
|