After locating this fault, the circuit identifies the openwire and allows you to open and repair the correct cable end.
定位这个故障后，电路识别开路电线，允许断开和修复正常的电缆端。
2
The paper introduced the effect of neutral wire the harm of opencircuit and a kind of simple credible open circuit protection method.
介绍了在三相四线制供电系统中，中线的作用，断线的危害，以及一种简单可靠的断线保护电路。
3
The faults include opencircuit, short circuit and poor contact. It also can be used to telemetry the position of the fault, including the leak grounding, wire breaking and poor contacting.