Hi. I've recently been shown a standard published by a European group called UNIPEDE titled "Automation and Control Apparatus for Generating Stations and Substations - Electromagnetic Compatibility Immunity Requirements" - Ref# 23005Ren9523.
This standard generally adheres to the same requirements for immunity as the CE-mark standards, however for ESD it requires 8kV contact and 15kV air for HV substation environments. As is usually the case, there's no rationale provided as to why these levels where chosen (something that really annoys me about most standards). Does anyone have suggestions as to why the authors of the standard would expect worse ESD conditions in a substation than they seem to expect in an air conditioned, carpeted office? (equipment in environments other than HV substations only need meet 6kV contact, 8kV air according to this standard) ------------------------------------------------------------------------- Please note: The views, opinions and information expressed and/or contained herein do not necessarily reflect the opinions or views of Foxboro, the organisation/s through which this communication was transmitted nor any other third party, unless explicitly stated so. Peter Poulos (Hardware Design Engineer) Foxboro Australia 42 McKechnie Drive, Eight Mile Plains, QLD, Australia 4113 Tel:+61 (07) 3340 2118 Fax: +61 (07) 3340 2100 E-mail:pet...@foxboro.com.au --------- This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: "unsubscribe emc-pstc" (without the quotes). For help, send mail to ed.pr...@cubic.com, j...@gwmail.monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators).
