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一、前言高压电容器中长期来一直采用铝箔作电极,矿物油浸纸作介质的绝缘结构。此后,为了提高电容器的性能,缩小电容器的体积,出现了用PCB(氯化联苯)作浸渍剂,以PP膜与电容器纸(以后简称C.P)组合介质的电容器。为了防止环境污染,日本自1972年起禁止使用PCB。寻找一种公害低、性能优良的代用油已成为一个世界性的倾向。在日本出现了几种代用油,其中苯二甲苯基乙烷(Phenylxylylethane,简称PXE)用作电容器油具有
I. Introduction High-voltage capacitors have long been using aluminum foil electrode, mineral oil impregnated paper for the dielectric insulation structure. Since then, in order to improve the performance of the capacitor and reduce the volume of the capacitor, a capacitor using a PCB (chlorinated biphenyl) as an impregnating agent and a combination of a PP film and a capacitor paper (hereinafter referred to as C.P.) has appeared. In order to prevent environmental pollution, Japan banned the use of PCBs since 1972. Looking for a substitute oil with low pollution and excellent performance has become a worldwide trend. Several alternative oils have appeared in Japan, of which Phenylxylylethane (PXE) is used as a capacitor oil