Charged Cable Discharge Events Model and Performance Measurement
Firstly, cable voltage charging by rotating and rubbing on floor was measured referred to standard of IEC 61340-4-5, and category 6 ethernet cable voltage was measured. Secondly, based on measurement of the cable voltage waveform, the cable voltage equivalent RC circuit model was deduced, and exponential function can be obtained to describe the cable voltage, the time constant τ is determined by the cable resistance R and capacity C to the ground. Thirdly, the current, transient electric field and magnetic field was measured while the charged cable discharging on the metal target. At last, the current waveform was compared with MIL-STD-461F CS115 conducted susceptibility, bulk cable injection and impulse excitation. The results show that the CDE current waveform is similar, but current is higher. Therefore, the CDE protection method is required and the EMC testing standard needed to be improved to cover CDE measurement.
Y. Han et al., "Charged Cable Discharge Events Model and Performance Measurement," Dianbo Kexue Xuebao/Chinese Journal of Radio Science, vol. 30, no. 6, pp. 1064-1068, 1085, Chinese Research Institute of Radiowave Propagation, Dec 2015.
The definitive version is available at https://doi.org/10.13443/j.cjors.2014111601
Electrical and Computer Engineering
Electromagnetic Compatibility (EMC) Laboratory
Keywords and Phrases
Electric fields; Electromagnetic compatibility; Exponential functions; Cable discharge events; Cable voltages; Equivalent RC circuit; Impulse excitations; Performance measurements; Protection methods; Time-domain waveforms; Transient electric fields; Cables; Electro-static discharge (ESD)
International Standard Serial Number (ISSN)
Article - Journal
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01 Dec 2015