This is a multi-part message in MIME format.
Sam, See EN61000-4-5 figures 13 and 14. The surge is directly applied between the isolated EUT chassis and the earth.
Figure 13 shows the setup for cables grounded at both ends and figure 14 for cables grounded only at one end. "Sam Wismer" <[email protected]> "Sam Wismer" <[email protected]> Sent by: [email protected] 12/19/2003 09:37 AM Please respond to "Sam Wismer" To: "EMC 2" <[email protected]> cc: Subject: Surge on signal lines Hello All, I have a product in which the customers can envision the user to use a signal cable longer than 30m. He has no control over what is used and the product will function with a cable of that length. The standard I am testing to is EN 61000-6-2. The requirement for signal lines says the surge on I/O lines must be performed >from line to earth at 1kV. Silly question I suppose, but what is meant by line and what is meant by earth? I suppose line is the signal line and earth is protective earth. Also, I assume the surge must be induced by an inductive clamp. My question is how is the surge applied between the signal line and earth when using a clamp? Kind Regards, Sam Wismer Engineering Manager ACS, Inc. *Tel: (770) 831-8048 *Fax: (770) 831-8598 *Web: <http://www.acstestlab.com/> www.acstestlab.com <mailto:*[email protected]> *[email protected] -- For more information about UL, its Marks, and its services for EMC, quality registrations and product certifications for global markets, please access our web sites at http://www.ul.com and http://www.ulc.ca, or contact your local sales representative. -- ********* Internet E-mail Confidentiality Disclaimer ********** 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. Underwriters Laboratories Inc. and its affiliates do not accept liability for any errors, omissions, corruption or virus in the contents of this message or any attachments that arise as a result of e-mail transmission. *****************************************************************
<<C1900630.gif>>
<<graycol.gif>>
<<ecblank.gif>>
<<pic07711.gif>>
