Eric, I get the point of your story however, taking measures against surge on signal and telecom lines is definitely less expensive as fiber solutions. I case of a direct hit, the coupling onto a cable length of less then 10 meters between equipment and fiber converter is enough to kill your equipment anyway.
Following your reasons you should definitely stop testing the mains supply connection against surges and consider to supply your equipment with batteries, as lightning discharges propagate most often by the mains. Regards, Gert Gremmen, (Ing) ce-test, qualified testing =============================================== Web presence http://www.cetest.nl CE-shop http://www.cetest.nl/ce_shop.htm /-/ Compliance testing is our core business /-/ =============================================== >>-----Original Message----- >>From: [email protected] [mailto:[email protected]]On Behalf >>Of Barry Ma >>Sent: Thursday, December 21, 2000 1:33 AM >>To: [email protected] >>Cc: [email protected] >>Subject: Re: LMC With Regard To Surge Test Cable Length >> >> >> >>Eric, >> >>To make your nice input more informative, please allow me to add >>what clause 3.6 reads: >>"Long distance lines: Lines within a building which are longer >>than 30m, or which leave the building (including lines of outdoor >>instalations)." >> >>BM >>-------------- >>On Wed, 20 December 2000, [email protected] wrote: >> >>> EN 61326-1 Product Family, >>> >>> Laboratory, measurement, and control equipment within the scope of EN >>> 61326-1 does not require surge testing until reaching the definition of >>> Long Lines (see clause 3.6) which is NOT 10 meters, but does >>include lines >>> that can leave the building. >> >>..... [clipped by BM] >>--------------- >> >> >>Thanks. >>Best Regards, >>Barry Ma <[email protected]> >>ANRITSU http://www.anritsu.com >>Morgan Hill, CA 95037 >> >>Find the best deals on the web at AltaVista Shopping! >>http://www.shopping.altavista.com >> >>------------------------------------------- >>This message is from the IEEE EMC Society Product Safety >>Technical Committee emc-pstc discussion list. >> >>To cancel your subscription, send mail to: >> [email protected] >>with the single line: >> unsubscribe emc-pstc >> >>For help, send mail to the list administrators: >> Jim Bacher: [email protected] >> Michael Garretson: [email protected] >> >>For policy questions, send mail to: >> Richard Nute: [email protected] >> >>
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