Motor CM2Z MCCBs without ground fault protection.
电动机保护用CM 2z无接地故障保护。
This action criterion shows that it is highly selective to the ground fault.
该判据对接地故障具有很高的选择性能。
This ground fault protection function may be incorporated into a circuit breaker.
这种功能可以一体化设计在断路器上。
The shortage of traditional single-phase ground fault protection principle is pointed out.
指出传统的接地保护原理的不足。
Hence, the stator and rotor ground fault protection play an important role in the protection system of generator.
发电机定子接地保护及转子接地保护是发电机的继电保护系统中的一项重要内容。
The drawbacks of present stator ground fault protection principle for the small and medium sized generators are pointed out.
指出了现有中小型发电机定子接地保护原理的不足。
Based on the analysis of a typical stator ground fault and its recording data, the protection action is proved to be correct.
通过对一次典型的定子接地故障情况和保护录波数据分析，证明了保护动作行为的正确性。
Furthermore, based on Lab VIEW virtual instrument technology, the chaotic single-phase-to-ground fault protection is developed.
采用虚拟仪器技术，开发了基于混沌选线方法的小电流接地系统单相接地故障选线仪。
This paper analyzes why dc system ground fault causes power unit outage and proposes improvement plans. The prevention measures are put into effect.
文章分析了直流接地引起主机停运的原因，并提出了改进方案，实施了防范措施。
The fault phase selector discussed is based on the result that the fault component of sound phases is zero when a single-phase-to-ground fault occurs.
文中所探讨的相电流突变量选相元件，是利用单相接地故障时，两健全相相间电流突变量为零这一特征来得到的。
The test results show that the ground fault at any point of the stator of a large unit-type generator-transformer system can be successfully protected.
试验结果表明：大型发电机一变压器组的定子的任何一点上发生接地故障时都能成功地获得保护。
Such items known to be counterfeited include control relays, circuit breakers, receptacles, ground fault circuit interrupters and other electrical products.
我们已知的假冒产品包括控制继电器，断路器，插座，漏电断路器和其他电器产品。
They provide system security and immediate reliable low level ground fault detection on three-phase AC resistance grounded or grounded electrical distribution systems.
此类继电器能够增加系统安全性，并对三相交流接地电阻或接地配电系统进行可靠的低级接地故障检测。
Because a single fault protection scheme has poor precision in ground fault detection, information fusion technology is discussed and many selection methods are fused.
由于单一故障选线方法的精确度较低，探讨了信息融合处理技术，将多种选线方法进行了信息融合实现。
Combined with the research status of single-phase-to-ground fault locating for small current grounding system, a new idea based on non-fault-phase transient current is presented.
针对小电流接地系统单相接地故障定位的研究现状，提出基于非故障相暂态电流的单相接地故障定位的思想。
Furthermore, a checkout method for the third harmonic voltage based protection scheme of stator ground fault in generators is presented based on the verified MLM-FEM coupled model.
进而提出了基于多回路-有限元耦合数学模型的同步发电机定子单相接地故障三次谐波电压保护方案校验方法。
The signal injection method is widely used for automatic selecting fault line in indirectly earthed power system, which has great effect in the system of single-phase ground fault.
注入信号法是一种效果较好的选线方法，其原理广泛应用于小电流接地系统单相接地故障的自动选线。
A transformer model compatible with the Electromagnetic Transients Program (EMTP) is presented, which can be used to simulate the turn to turn fault as well as also turn to ground fault.
介绍了一种适合EMTP仿真程序的变压器模型，该模型能模拟变压器各种匝间短路和绕组对地短路；
The arc suppression coil with three phases and five columns can achieve automatic trace and compensation for ground fault capacitive current of power system by the method of rectifying i.
介绍了三相五柱式消弧线圈及其自动跟踪补偿原理，该消弧线圈在结构上突破了传统消弧线圈的模式，将传统的接地变压器和消弧线圈有机地结合成一个整体。
This multi loop model can better consider the influences of the distributed capacitance and the nonsymmetrical stator windings when stator ground fault occurs in interior of the stator windings.
该模型可以同时考虑定子绕组对地分布电容的影响，以及定子绕组内部接地故障带来的定子绕组结构上不对称的影响。
On account of the weak fault current and unstable fault arc, the problems of the single phase to ground fault line selection in the non-solid earthed network have never been thoroughly resolved.
由于故障电流小、电弧不稳定等原因，小电流接地系统单相故障选线问题始终没有得到彻底解决。
Can reliably determine, within the community and bounds detection ma level and zero-sequence current phase short circuit fault current, automatic removal of single-phase ground fault and phase fault.
能可靠判断、检测界内与界外毫安级零序电流及相间短路故障电流，实现自动切除单相接地故障和相间短路故障。
Small Current Grounding Power System is widely used in power distribution network with middle and low voltage in china, and the single phase to ground fault takes place most frequently in such system.
提出了一种基于线路分布参数的小电流接地系统的高精度故障模型，用于分析单相接地故障产生的暂态信号特征及进一步完善基于暂态信息的小电流接地故障选线判据。
Ground fault circuit interrupters are required whenever moisture may contact electrical equipment or the user.
只要湿气可能接触到电器设备或使用者，则都应配备接地故障断路器。
There is an electrical preventive maintenance task assigned to the Ground Fault Circuit Interrupter, that requires periodic testing of the unit.
应指定接地故障断路器的电气预防维护任务，此项任务要求对装置进行定期测试。
The reduction of the residual current of the ground-fault point is beneficial to the extinction of the grounding arc and to the reduction of the intermittent arc grounding over voltage.
减小接地故障点的残流有利于接地电弧的瞬间熄灭及降低间歇性电弧接地过电压。
The reduction of the residual current of the ground-fault point is beneficial to the extinction of the grounding arc and to the reduction of the intermittent arc grounding over voltage.
减小接地故障点的残流有利于接地电弧的瞬间熄灭及降低间歇性电弧接地过电压。
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