Hello group - In the -950 series standards, three Pollution Degrees are defined for detirming insulation coordination. For instance, in EN60950 3rd Ed., clause 2.10.1 defines Pollution Degree 1 " for components and subassemblies which are sealed so as to exclude dust and moisture (see 2.10.7)." Clause 2.10.7 gives test requirements for temp cycling, humidity, and electric strength tests, although compliance to the clause is given as "...inspection from the outside, measurement, and, if necessary, by test."
I would like to use Pollution Degree 1 when evaluating a product that has a dust and water ingress rating of IP66 per IEC - 60529, Degrees of protection provided by enclosures (IP Code) . The product itself is intended for use in a Pollution Degree 3 environment, but the creepages and clearances inside the unit are subject to Pollution Degree 1, thanks to the protection provided by the enclosure. Is the IEC-60529 report, showing a IP rating of IP66, adequate to satisfy the requirements of 2.10.1 & 2.10.7 for using Pollution Degree 1 when assessing clearance and creepage ? Thanks in advance. Doug Massey Safety Approvals Engineer LXE, Inc. Norcross, GA., USA Ph. (770) 447-4224 x3607 FAX (770) 447-6928 e-mail: masse...@lxe.com Cruise our website at: http:\\www.lxe.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: Michael Garretson: pstc_ad...@garretson.org 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://www.rcic.com/ click on "Virtual Conference Hall,"
