查询词典 circuit breaker

Use the data of circuit breaker on-line working conditon monitoring of ShaoXing Power Bureau, applicate wavelet analysis theory and all kinds of signal dispoing methods, focus on vibration signal and winding electric current wave, at last, provide the fault diagnose result of circuit breaker, and build circuit breakers standard finger library and fault finger library.

利用绍兴电力局提供的断路器在线监测数据，应用小波分析理论和各种信号处理方法，重点分析振动信号与线圈电流波形，给出断路器的故障诊断结果，并建立起断路器的正常指纹库和故障指纹库。

Time graded schemes such as over-current or distance protection schemes are examples of those providing inherent back-up protection; the faulty section is normally isolated discriminatively by the time grading, but if the appropriate relay fails or the circuit breaker fails to trip, the next relay in the grading sequence will complete its operation and trip the associated circuit breaker, thereby interrupting the fault circuit one section further back.

过流保护或距离保护可作为前一种方案的例子，通常采用分时限区别来隔离故障段，如果相应的继电器拒动或断路器拒跳，按时限下一个继电器动作跳开有关的断路器，这样就断开了故障回路的下一段。采用这种方法就获得了完整的后备保护。

On the base of practical transformer substation main connection,electriccomponents and system circuit model are first formed in the paper;analyze vacuum arccharacteristic and medium resume are analyzed,then,according to vacuum chamberphysical process of switching AC arc,resume process are divided into three stages:sheathdevelopment,neutral particles diffusion and static characteristic,with that,calculatingmodel of medium resume strength is erected and applied in the computing of vacuumcircuit breaker interrupting transform overvoltage;In the paper,Saber software is used tosimulate a whole switching process;As follows,overvoltage characteristic of vacuumcircuit breaker switching no load and load transformers,kinds of influence factors areanalyzed in detail;At last,vacuum circuit breaker switching capacitance groupovervoltage formative causes and electrode refining for lessening reignition are discuss.

本文针对中低压变电站的实际主接线建立各电气元件及系统的电路模型；在真空电弧的特点及间隙的介质恢复特性上，依据真空断路器灭弧室分断电弧的物理过程，将真空电弧熄灭后的恢复过程分为鞘层发展、中性粒子扩散和静态特性三个阶段，建立了相应的介质恢复强度的计算模型，应用到切除变压器作过电压的计算中；采用Saber仿真软件模拟计算真空断路器切除变压器作过电压；并分别对真空断路器切除空载及负载变压器作过电压的特点与影响作过电压的各种因素做了详细的分析；最后简要分析了真空断路器开断电容器组过电压的形成原因及为减少重燃的电极老炼措施。

On the base of practical transformer substation main connection,electriccomponents and system circuit model are first formed in the paper;analyze vacuum arccharacteristic and medium resume are analyzed,then,according to vacuum chamberphysical process of switching AC arc,resume process are divided into three stages:sheathdevelopment,neutral particles diffusion and static characteristic,with that,calculatingmodel of medium resume strength is erected and applied in the computing of vacuumcircuit breaker interrupting transform overvoltage;In the paper,Saber software is used tosimulate a whole switching process;As follows,overvoltage characteristic of vacuumcircuit breaker switching no load and load transformers,kinds of influence factors areanalyzed in detail;At last,vacuum circuit breaker switching capacitance groupovervoltage formative causes and electrode refining for lessening reignition are discuss.

本文针对中低压变电站的实际主接线建立各电气元件及系统的电路模型；在真空电弧的特点及间隙的介质恢复特性上，依据真空断路器灭弧室分断电弧的物理过程，将真空电弧熄灭后的恢复过程分为鞘层发展、中性粒子扩散和静态特性三个阶段，建立了相应的介质恢复强度的计算模型，应用到切除变压器操作过电压的计算中；采用Saber仿真软件模拟计算真空断路器切除变压器操作过电压；并分别对真空断路器切除空载及负载变压器操作过电压的特点与影响操作过电压的各种因素做了详细的分析；最后简要分析了真空断路器开断电容器组过电压的形成原因及为减少重燃的电极老炼措施。

Using low voltage vacuum circuit breaker and air circuit breaker, the low voltage electric circuit having the functions of frequently setting up and on and protecting was designed.

应用结果表明，以低压真空断路器和空气断路器为中心，设计的低压供电部分，可满足试验系统频繁分和与保护的要求。

Air Circuit Breaker An air circuit breaker automatically interrupts the current flowing through it when the current exceeds the trip rating of the breaker.

空气线路断路器空气线路断路器的功能是当电流大小超过断路器的过流跳脱设定值后自动断开。

Air Circuit Breaker, Mold Case Circuit Breaker, Miniature Circuit BreakerMCB

低压断路器工厂为现代重工电气有限公司三大工厂之一，占地面积10，240平方

The paper grounds on a design and development automation project of universal air circuit breaker of a low-voltage electrical plant in Jiangsu, and according to the enterprise's demand mainly researches development and re-design of the original circuit breaker for the problems of unperfect function, inconvenient setting operatin and unfriendly man-machine interfaces, and researches how to keep reliability of the breaker, increase the level of automation and intelligence and simultaneously reduce the product cost as far as possible. So, this paper has certain practical significance and application prospect. Among this subject, the intelligent controller regards MSP430 MCU which TI Company produces and CPLD as the key procsssor.

本文依托江苏某低压电器厂的万能式空气断路器的自动化设计开发项目，根据企业需求，针对原断路器功能单一，整定不方便，人机界面不友好，产品档次低等问题进行改造和重新设计，在保证断路器工作可靠性的同时，按企业要求进一步完善保护功能，提高断路器的自动化程度和智能化程度，同时尽可能降低产品成本，因此本文的研究内容具有一定的现实意义和应用前景。

Current limiting circuit breaker of the fast action is the use of short-circuit current generated by the electric circuit breaker contacts to promote the rapid action force.

限流的快速行动断路器是利用短路电流的电路断路器接触产生的推动力量迅速采取行动。

For transformers, circuit breakers to contact the two into line within the circuit breaker for the bridge connection, contact the circuit breakers in the two into line outside the circuit breaker for the bridge connection.

针对变压器，联络断路器在两个进线断路器之内为内桥接线，联络断路器在两个进线断路器之外为外桥接线。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。