Greetings all, I have become involved in a discussion regarding potential ground voltage differences between opposite ends of long network lines in industrial locations. As I understand it these differences are the reason for some network types floating cable shields or connecting them through snubbing networks to chassis instead of connecting directly.
In the past I have simply accepted this explanation however I am becoming less comfortable with just accepting it. Can someone provide me with or point me to where I can obtain information on this subject? I am interested to know what the actual magnitude of ground differences may be from one end of a plant to another as well as where the numbers come from. Have they been calculated or actually measured? If shields are connected directly to chassis at each node of a network will there be an effect of equalizing the ground levels through the network or will enough current flow to melt the shield of the cable? Thanks in advance for any replies. Jeff Bailey Compliance Engineering SST - A Division of Woodhead Canada Phone: (519) 725 5136 ext. 363 Fax: (519) 725 1515 email: jbai...@mysst.com Web: www.mysst.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...@attbi.com 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"
