I'm trying to characterize the 50Hz AC line impedance of my facility, for comparison to the values specified in IEC61000-3-3. I've come across "generic" short circuit values for the Resistive and Inductive components. However, I need to determine exactly what these values are ideally through a combination of measurement and calculation.
So far, I've taken a large resistive load and measured the voltage drop on the AC line. From that I calculated the total impedance of the AC line. However, as you may suspect, with a resistive load, the power factor is 1.0. So I can't vectorly, calculate the resistive and inductive components. Is anyone familiar with a method to measure and calculate those values. The generic values I have for short circuit condition (which include 4 wires in a magnetic conduit) come out higher than my measured values, and those do not include the motor generator source. Thanks for any information David Spencer Xerox Corporation ------------------------------------------- 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"
