Hello Rich, RF-earth coil are common practice in Inverter circuits.
Special chokes exist for this purpose and are even incorporated into approved mains filter designs. One of the shelf laying on my table has a earth series coil having a 1 mOHM resistance. The type is Schaffner 343-3/05. Inductance is 400 uH. The thing is IEC 950 compatible acc. to Schaffner. Regards, 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: rlanz [SMTP:[email protected]] Verzonden: vrijdag 27 februari 1998 15:56 Aan: [email protected] Onderwerp: RF choke in protective earth Good Morning. Seeking opinions on use of RF choke in protective earth. Due to invertor circuitry, rf noise is tripping GFCI. Series coil in P.E. appears to solve problem. RF coil will not effect 10-25 A PE safety test done at 60 Hz. Also coil shall be equivalent to AWG of PE conductor to pass equivalent ground fault circuitry. Nevertheless, it is disconcerting to place a series component in the Protective earth conductor. Comments are appreciated. Thank You Rich Lanzillotto [email protected]
