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ASTM D5288使用多电极材料测定电绝缘材料追踪摄影系数标准试验方法
日期:2012-02-07 17:56
y at relatively high voltages. This method is an accelerated test which at relatively low test voltages, provides a comparison of the performance of insulating materials under wet and contaminated conditions. The Tracking IndexCopper Electrodes test is not related directly to the suitable operating voltage in service.
When organic electrical insulating materials are subjected to conduction currents between electrodes on their surfaces, many minute tree-like carbonaceous paths or tracks are devel

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