An electret transducer for impulse voltage measurements
作者： R.A.C. Altafim , J.A. Giacometti , J.M. Janiszewski
DOI: 10.1109/28.158851
关键词:
摘要: A method for detecting impulse voltages in transmission and distribution lines that uses an electret as the element of transduction is proposed. The sensor consists two metallic electrodes separated by a piece dielectric (Teflon FEP) air gap. voltage produces electric discharge gap charges are transferred from electrode to surface, forming electret. For with planar electrodes, linear relationship between applied peak V/sub p/ potential was found, can be used range 0.8 >
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