Hello Doug, The spirit is rather simple:
Leakage currents over 3.5 mA are judged to be dangerous. Therefore as soon as the equipment exceeds this value an industrial type of plug is required, and a label should be added warning the operator. 5.2.5 should be read as: only for these 3 categories leakage current over 3.5 mA is permitted if it fulfills the 3 clauses. I think that table 17 should do a better job for you, it is a general table. The difference between the 2 categories B and A is to distinct between industrial (3-phase ?) equipment and simple one -phase house hold type equipment, both using plugs of a different type. Regards, Ing. Gert Gremmen == CE-test, qualified testing, Consultancy, Compliance tests for EMC and Electrical Safety 15 Great EMC-design tips available ! Visit our site : http://www.cetest.nl The Dutch Electronics Directory http://www.cetest.nl/electronics.htm == -----Oorspronkelijk bericht----- Van: Doug McKean [SMTP:[email protected]] Verzonden: dinsdag 20 januari 1998 22:36 Aan: EMC-PSTC Onderwerp: EN-60950 Question ... Situation: Piece of equipment measures over 3.5 milli-amps for earth leakage test: According to EN-60950 "5.2.5: Equipment with an earth leakage current exceeding 3,5 mA CLASS I STATIONARY that is PERMANENTLY CONNECTED EQUIPMENT, or that is PLUGGABLE EQUIPMENT TYPE B ... " then three conditions follow one of which is labeling requirements. Definition of PLUGGABLE EQUIPMENT TYPE B is located in 1.2.5.2. Questions: If you claim your equipment is pluggable type equipment type A: Definition of pluggable type equipment type A is located in 1.2.5.1. Are you exempt from 5.2.5 ??? Are you allowed to use IEC-320 connectors? What really constitutes the difference between pluggable type equipment type A versus pluggable type equipment type B? Just the plug? Or better, what is the spirit behind all this? Do you have to state this in product material to the customer? Regards, Doug
