本文阐述了一种简单的相序保护器的工作原理及其参数计算原则，讨论了元件参数之间的相对关系和优化问题。
This paper describes the operation principle of a simple phase sequence relay, its parameter calculating method, and the correlative relationship and optimization problem on element parameters.
基于对运行电流的各相序分量的分析，以微机构成监测保护装置，该装置功能强、成本低、可靠性高。
The monitor and protection device is made up of microprocessor and features stronger function, low cost and higher reliability.
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.
论文根据上述分析设计了基于故障分量采样值差动保护、故障分量相量差动保护、常规电流差动保护和零序电流差动保护自适应的保护方案。
The setting schemes of the resistance coefficient and the least trip differential current for the current differential protection based on sampled values using fault component are discussed.
在基于零序电流方向原理的矿井低压电网选择性漏电保护中，比相误差是导致保护误动的主要因素。
The phase comparison error is the primary factor leading to mistaken action in the selective leakage protective system of underground LV networks based on zero sequence current direction.
在结合微机差动保护装置算法及仿真建模的基础上，分析了负相序对差动保护的影响，并给出了相应的处理方法。
Based on the arithmetic of differential protection and simulation technique, this paper analyses the influence of the negative sequence to power system.
高/低压力开关保护、排气过高保护、热熔赛、压缩机热保护器，过流继电器、相序/缺相保护器等。
High / low pressure switch protection, protection, hot melt season, high exhaust heat protector for a compressor, overcurrent relay, phase sequence protector.
具有超温警报，电源相序错误，马达过载等保护功能；
Featured with overheat alarm, phase sequence error and motor overload alarm;
电子控制线路根据需要可以增加多种保护功能电路，如：漏电、欠电压、缺相、相序等等保护功能电路。
The electronic control line can be added with multiple protecting circuits, such as the protecting circuits for leakage, undervoltage, phase failure, phase sequence, etc.
加强保护的人机接口功能避免TA的相序、极性和接地新问题。
The question of phase sequence and polarity and earth are avoided by stronger HMI.
加强保护的人机接口功能避免TA的相序、极性和接地新问题。
The question of phase sequence and polarity and earth are avoided by stronger HMI.
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