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Article #22563Re: High Pressure Sodium Lamp Failure Characteristics
From: Mark Harriss
Date: Wed, 29 Jan 2003 18:36
Date: Wed, 29 Jan 2003 18:36
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Dale wrote: > Hi everyone out there. > > Im looking at detecting failure of HPS street lamps where say you have > up to 20 lamps on a particular circuit. Im only interested in knowing > that one or more lamps are in failure state (i.e. from the moment they > start to go through their on-off cycle) > > (If anyone has got ideas on when a particular lamp has failed, via a > single feeder circuit, of course I would be very interested, even > maybe have a job for you!!! ;) > > Failing a method for above, even a pointer or two to any links that > may characterise the failure mode i.e. current/voltage characteristics > of such would be a start. > > Regards, > > Dale What about RF interference caused by the faulty lamp and detectable via the a power cable pickup
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X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: 112d1e,d19578c6e21becad X-Google-Attributes: gid112d1e,public X-Google-Thread: 103407,d19578c6e21becad X-Google-Attributes: gid103407,public X-Google-Thread: 107cee,d19578c6e21becad X-Google-Attributes: gid107cee,public X-Google-Thread: 105d97,d19578c6e21becad X-Google-Attributes: gid105d97,public X-Google-Thread: 111d0a,d19578c6e21becad X-Google-Attributes: gid111d0a,public X-Google-ArrivalTime: 2003-01-29 00:25:10 PST Path: arc1-ca.pugleaf.net!archiver1.google.com!news1.google.com!newsfeed.stanford.edu!nntp.cs.ubc.ca!cyclone.bc.net!sjc70.webusenet.com!c03.atl99!news.webusenet.com!news02.tsnz.net!newsfeed01.tsnz.net!ken-transit.news.telstra.net!news.telstra.net!newsfeeds.bigpond.com!not-for-mail From: Mark Harriss <ningauble@bigpond.com> Subject: Re: High Pressure Sodium Lamp Failure Characteristics Newsgroups: sci.electronics,sci.electronics.design,aus.electronics,sci.electronics.basics,sci.electronics.misc Followup-To: sci.electronics Reply-To: ningauble@bigpond.com References: <65050f09.0301282112.294b0685@posting.google.com> Lines: 24 User-Agent: KNode/0.7.1 MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7Bit Message-ID: <24MZ9.35661$jM5.91393@newsfeeds.bigpond.com> Date: Wed, 29 Jan 2003 18:36:35 +0000 NNTP-Posting-Host: 144.139.169.215 X-Trace: newsfeeds.bigpond.com 1043828094 144.139.169.215 (Wed, 29 Jan 2003 19:14:54 EST) NNTP-Posting-Date: Wed, 29 Jan 2003 19:14:54 EST Organization: Telstra BigPond Internet Services (http://www.bigpond.com)