All - >From UL's NWGQ Standardized Appendix Pages (these are for ITE products)
"2.1.2.2 If the output of the test-equipment transformer is less than 500 volt-amperes, the equipment shall include a voltmeter in the output circuit to indicate the test potential directly." It's impossible to say that this applies across the board for all product categories and for all third party safety certifiers. I generally recommend a 500VA transformer for production line EST equipment, to avoid unexpected issues with factory auditors and feel confident that the production line staff have as little to monitor as possible; in my experience, the more they have to monitor, the less likely they are to monitor any given thing, especially if disgruntled. I also recommend, As Greg mentioned, that the trip current be set as low as practical for the product under test. Regards, Peter L. Tarver, PE Product Safety Manager Sanmina-SCI Homologation Services San Jose, CA [email protected] > -----Original Message----- > From: Gregg Kervill > Sent: Wednesday, June 19, 2002 1:02 PM > > 500 VA (and greater) is used for TYPE TESTING only. > > Any kind of breakdown that pulls more than 5 mA > is potentially lethal and > non-compliant. > > There is good reason for limiting the EOL > hot-pot current (dynamically - or > even with a trip) as low as possible. > > Best regards > > Gregg ------------------------------------------- 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: Ron Pickard: [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://ieeepstc.mindcruiser.com/ Click on "browse" and then "emc-pstc mailing list"
