这种方法的特点在于：①可精确地模拟各种简单故障和复杂故障，包括金属性短路和完全断相故障；
The method of this paper has the following characteristics: 1)any simple or complex fault can be modeled accurately, including metallic short circuit faults and open conductor faults;
通过分析低压隔爆电动机的主要故障类型，针对不对称性短路故障和断相故障提出了采用负序保护原理进行保护的方案。
Based on the analysis of main fault types of LV (Low Voltage) flameproof motor, the negative sequence protection principle is proposed for its asymmetric short circuit fault and open phase fault.
该保护器以单片机为核心，具有漏电、过载、断相、短路等多种故障自动诊断及串行通信等功能。
It takes microprocessor as a core functions at automatic diagnosis of failures, such as overload, short phase and short circuit, and serial communications.
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