Peter, For your equipment special consideration of transient levels is needed. Refer to annex G of 60950. If you power the pole mounted equipment from overhead lines as do streetlights, you are likely to be overvoltage category IV which might mean mains transient levels of 4 or 6 KV.
If the camera is remotely powered from inside a building, you might treat the installation as TNV3, where 1.5 KV is the assumed transient level (2.10.3.3 note 2) unless you know otherwise. Don't forget you need lightning protection considerations. (References are to IEC 60950-1 (2001-10) Ed. 1.0) Bob Johnson ITE Safety -----Original Message----- From: owner-emc-p...@majordomo.ieee.org [mailto:owner-emc-p...@majordomo.ieee.org] On Behalf Of Peter Merguerian Sent: Wednesday, March 06, 2002 11:52 AM To: "EMC-PSTC (E-mail)" < Subject: Don'r Get Caught Running a Red Traffic Light! Dear All, For an outdoor pole-mounted computerized camera taking pictures of your car and its license plates when you run over a red light, does anyone have an objection to the following safety standards for ITE? Is it ok to assume that the mains transient voltage for outddor equipment is limited to 2500V? UL60950:2000] EN60950:2000 IEC60950:2000 This e-mail message may contain privileged or confidential information. If you are not the intended recipient, you may not disclose, use, disseminate, distribute, copy or rely upon this message or attachment in any way. If you received this e-mail message in error, please return by forwarding the message and its attachments to the sender. PETER S. MERGUERIAN Technical Director I.T.L. (Product Testing) Ltd. 26 Hacharoshet St., POB 211 Or Yehuda 60251, Israel Tel: + 972-(0)3-5339022 Fax: + 972-(0)3-5339019 Mobile: + 972-(0)54-838175 http://www.itl.co.il http://www.i-spec.com ------------------------------------------- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: davehe...@mediaone.net For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://ieeepstc.mindcruiser.com/ Click on "browse" and then "emc-pstc mailing list"
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