分析表明，线路末端三相故障时，线路首端的测量阻抗不与故障距离成正比。
The analysis shows that the measured impedance at the head of the line is not proportional to the fault distance when a three-phase fault occurs at the end of the line.
在三相感应电机运行的各种故障中，绕组缺相故障的发生率较高。
In all faults of Three-phase induction motors, stator phase failure has a higher rate.
缺相故障是三相感应电动机的典型故障之一。
Stator phase failure is one typical fault of a three-phase induction motor.
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