Don, I do not believe that circuit-to-circuit testing is required between low-voltage circuits. The test is intended to prevent shock hazards caused by insulation leakage between high-voltage circuits and low-voltage circuits. I would group the circuits for production testing and only test them separately (for diagnostic purposes) if the test failed.
Scott Lacey -----Original Message----- From: [email protected] [mailto:[email protected]]On Behalf Of [email protected] Sent: Friday, August 17, 2001 2:13 PM To: [email protected] Subject: Manufacturing Hipot Testing Dear Group: A Hipot standard which we must run for CE compliance requires that circuit-to-circuit and circuit-to-ground testing be performed on a routine basis. The test is applied for 10s. The products I deal with have many circuits (Inputs, outputs, etc.) so test time is excessive . To speed test time the standard allows for grouping of similar circuits and decreasing the test time to 1s (with increased voltage). There is a problem with the grouping method because faults between circuits in the group are masked. A better way of performing dielectric strength testing would be to automate a process where each individual circuit is hipot tested to ground for 1 second. The problem is that this method doesn't match what the CE standard requires. Some of you have probably been in similar circumstances. What did you do? What do you suggest? Do I meet the standard no matter the cost? What is the risk of having my CE Mark pulled and perhaps my company sued if I do not meet the entire standard? Regards, Don MacArthur ------------------------------------------- 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: [email protected] with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Michael Garretson: [email protected] Dave Heald [email protected] For policy questions, send mail to: Richard Nute: [email protected] Jim Bacher: [email protected] All emc-pstc postings are archived and searchable on the web at: http://www.rcic.com/ click on "Virtual Conference Hall," ------------------------------------------- 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: [email protected] with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Michael Garretson: [email protected] Dave Heald [email protected] For policy questions, send mail to: Richard Nute: [email protected] Jim Bacher: [email protected] All emc-pstc postings are archived and searchable on the web at: http://www.rcic.com/ click on "Virtual Conference Hall,"
