Abstract
The international round robin test (RRT) demonstrated that the site correlation improvement effect of a common-mode absorbing device (CMAD) varies depending on the equipment under test (EUT). This paper investigates the cause. The standard deviation of the common-mode current, when the termination condition was changed at the AC mains cable end, was obtained from the calculation by using 6-port network and the measurement by using the artificial EUT. The results indicated that the standard deviation was reduced when a high impedance was inserted between the EUT's frame and the protective earth (PE) wire. The results, based on the EUT used in RRT, indicated that the standard deviation of radiated emission was reduced by decoupling the PE wire from the frame. In conclusion, since the EUT's frame is directly connected to the PE wire in many cases, the effect of CMAD can be discounted.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.