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- Voltage Clamping. The circuitry necessary to protect relay contacts from excessive voltage caused by switching current into inductive loads. 电压箝位为保护继电器触点不受切换至感性负载的电流引起的太大电压损坏所必须的电路。
- Be familiar with electric engineering design, detail design, PSB requirement, LV/MV switchgear, and protection relay. 熟悉电力设计、二次图设计、开关柜设计、继电器保护设计。
- An "Overcurrent Relay" is a type of protective relay which operates when the load current exceeds a preset value. 过电流继电器是继电保护装置的一种，当负载电流超过整定值时，继电器动作。
- GE Yaozhong. Adaptive protection relay and itps prospect ofdevelopment . Automation of Elect ric Power Systems , 1997 ,21 (9) : 42246. 葛耀中.;自适应继电保护及其前景展望
- A kind of design method of microprocessor protection relay apparatus based on real time operating system(RTOS) was introduced in this paper. 介绍了一种基于实时操作系统的微机继电保护装置的设计方法。
- Export of medium voltage protection relays and energy meters. 出口中级电压带保护继电器和累计式瓦特表。
- Equipped with phrase protection relay, power short-cut protection, current overload protection, hi-low voltage switch, freeze protection, water fiow control, electronic time holdup device, etc. 装有相序保护、电源短路保护、电流过载保护、高低压控制、结冰保护、水流制、电子时间延迟安全装置。
- Also analysis the frequency respond and filter characteristic of Fourier arithmetic based on the uncertainty of the sample result of sine signal. And meanwhile analysis the influence of the fault on the protection relay and Fourier arithmetic. 同时,根据正弦信号采样结果的不确定性现象,分析了离散形式的傅氏算法的幅值频率响应以及其滤波特性,并由此分析了直流系统发生换相失败故障以及系统恢复过程中的暂态过程对交流侧系统的继电保护以及傅氏算法的影响。
- The veracious fixed value of the differential protection relay is very important, which directly affects the reliability of short out alternately, neutral-point and direct or indirect grounding. 作为电力系统中变压器及发电机的主保护元件,差动保护继电器整定值选择的准确性直接影响其相间短路、中性点直接或间接接地的可靠性。
- YUE Quan-ming,GU Yong-peng,LU Fei-peng.GA based determination of minimum break point set for optional coordination of directional protective relay in a multiloop network[J].Relay,2002,30(8) :23 -26. [6]乐全明;顾永朋;吕飞鹏.;基于GA的环网方向保护配合最小断点集的计算[J]
- B.If, after examination, the motors and pumps are defected and the Seller is unable to fix the defect on its own, the defected protection relay shall be returned to Siemens Limited, Taipei. 如于检测后，马达与帮浦产生故障瑕疵，且买方无法自行修理故障处，则此瑕疵物应退还予西门子股份有限公司台北分公司。
- They netted the fruit trees to protect them from birds. 他们用网覆盖住果树以使其免遭鸟害。
- The protection relay system is an automation system that it can reflect the fault and the deviant state of electric power system and drive the breaker's action or send out the fault message. 继电保护系统是一种能反映电力系统故障和不正常状态,并能在系统故障和不正常状态出现时,及时动作于断路器跳闸或发出信号的自动化设备。
- The prototypes for protection relay and control is developed, which have passed the simulation test.While Petersen coil automation tuning system has been tested on the network for many years. 样机已通过动模实验，其中消弧线圈自动调整系统已形成产品，在现场运行多年，效果良好。
- The anchor man in a relay team runs last. 接力队中的主力跑最后一棒。
- The rapid development of power system protective relaying constantly to new demands, but also makes possible the rapid development of relay protection. 电力系统的飞速发展对继电保护不断提出新的要求，也使得继电保护得以飞速的发展。
- How can we protect our computer files? 我们怎样才能保护我们的计算机数据？
- Six teams competed in yesterday's relay race. 六个队参加了昨天的接力赛。
- A plastic cover protect the computer. 这台计算机由一个塑料防护罩盖着。
- It's our duty to protect the saplings. 保护树苗是我们的责任。
