期刊
IEEE TRANSACTIONS ON POWER DELIVERY
卷 29, 期 2, 页码 677-682出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TPWRD.2013.2281850
关键词
Arresters; composite; epoxy; microvaristors; nonlinear characteristics; varistors
A new concept composite varistor is proposed in this paper. This composite varistor has the chains of microvaristors, which are formed by applying an electric field during the curing process and work as current paths. This composite varistor shows superior nonlinear voltage-current characteristics despite small microvaristor content and has a good response against a steep voltage surge of several tens of nanoseconds in front time. In comparison with ceramic varistors where shapes are usually formed at their sintering temperatures of around 1000 degrees C, the composite varistor has an advantage in flexible shape because its shape is formed by curing the base polymer at a low temperature.
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