John It's a UK based Tram - single conductor wire. Traction current return via the running rails.
Regards Andy -----Original Message----- From: John Woodgate [mailto:j...@jmwa.demon.co.uk] Sent: 30 January 2014 15:54 To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: Re: [PSES] Audio Frequency Induction Loop In message <beda313b3e2b304ca6a08001bd61c9c01a2a6...@ukmb01.mottmac.group.int>, dated Wed, 29 Jan 2014, "McCallum, Andy" <andy.mccal...@mottmac.com> writes: >Sorry the quoted limits from the installer of the Afil system are from >BS EN 60118-4:1998 : I will read the 2006 and see if there have been >any changes. There have been; the installer really shouldn't be using that old edition. Meanwhile, there is a crucial piece of information missing. Is the overhead system a single wire or two? The terminology for electric vehicles is different in American and British English. British English terms: tram: a vehicle that runs on rails, which may or may not form the return conductor with a single overhead wire. The return conductor may instead be overhead, thus giving a 2-wire system. trolley-bus: A vehicle that runs on tyres and can be steered. Obviously, it requires a 2-wire overhead system. If the system is 2-wire, how far apart are the wires? I seem to remember that in Britain the distance is often the same as the railway gauge - 4 ft 8.5 ins. -- OOO - Own Opinions Only. With best wishes. See www.jmwa.demon.co.uk Nondum ex silvis sumus John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to <emc-p...@ieee.org> All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ Instructions: http://www.ieee-pses.org/list.html (including how to unsubscribe) List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas <emcp...@radiusnorth.net> Mike Cantwell <mcantw...@ieee.org> For policy questions, send mail to: Jim Bacher: <j.bac...@ieee.org> David Heald: <dhe...@gmail.com> - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to <emc-p...@ieee.org> All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ Instructions: http://www.ieee-pses.org/list.html (including how to unsubscribe) List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas <emcp...@radiusnorth.net> Mike Cantwell <mcantw...@ieee.org> For policy questions, send mail to: Jim Bacher: <j.bac...@ieee.org> David Heald: <dhe...@gmail.com>
