通断能力试验中试验电流的计算

Current computational method in switching ability test

本文介绍了低压电器通断能力试验中系统总阻抗的组成和短路电流的计算方法。在通断试验中,要使用能承受经常性短时负荷的变压器,为保证试验的出力,还要使低压线路的阻抗减小,合理的配置试验回路中的设备。

This article introduced the system total impedance composition and the computational method of short - circuit current in the low - voltage apparatus switching ability test. In switching ability test, we must use the transformer that can withstand the regular short - time load. In order to guarantee test striving, we also need configure test circuit equipment reasonably to make the low - voltage loop impedance reduction.