相序的测量及探讨

Measure of Appearance Order Meter and Discuss

叙述了三相交流电相序的意义,分析了三相交流电的相序测量的两种方法:直接比较法和相序表测量法。分析了两种常用的相序表:旋转式和指示灯式。对指示灯式相序表的原理作了较全面阐述。针对三相对称系统带上不对称负荷时的三相电压变化情况和向量变化过程,画出了不对称负荷的连接图和相量图以及相序表原理接线图。在此基础上试制了一台指示灯式的相序表,使用后效果良好。

This paper expounds meaning of three alternating current, what call the positive, minus appearance order of three alternating current. The twain means of three alternating current of appearance order measure analysed： directness compare and appearance order meter measure, the twain in common use appearance order meter： a sort of circumgyrated, tother indicator light. Elements of indicator light appearance order meter analysed entirely, three symmetry alternating current take asymmetry load, three voltage and vector changed.link chart and vector chart of asymmetry load drawed. In the basic we make the appearance order meter of indicator light, it is very good in feel.