vcb

Effects on VCB 's Chopping Level of Load Characters and Power Factors and Their Test Standard

负载性质与功率因数对真空断路器截流的影响及截流试验标准

Analysis into Influences of External Connecting Buses on Breaking Capability of VCB with Radial Magnetic Contacts

外部接线对横磁场触头结构真空断路器开断能力影响的分析

Characteristic Tests of VCB with Novel On-line Vacuum Monitoring Equipment

具有新型真空度在线检测装置的真空断路器特性试验

Investigations on the Characteristics of Arc Forms and Diagnosis of Plasma Parameters in VCB

真空开关电弧形态研究及其等离子体参数诊断

Research on the Influence of Closing / Opening Operation on Vacuum Breakdown Property of VCB

真空断路器合分操作对击穿性能影响的研究

Development of Cu-Cr Contact Material for Foreign VCB

国外真空开关管用Cu-Cr触头材料研究

The automatic monitoring and intelligent operation of VCB is main content of intelligence medium voltage switchgear .

中压断路器自动监测和中压断路器智能操作是中压开关智能化的主要内容，其中着重分析了中压断路器同步操作技术。

The practical application of series PLC S7-200 in electrical endurance test of VCB is mainly introduced .

主要介绍了S7-200系列PLC在真空断路器电寿命试验中的具体应用。

The Application of F-20M Programmable Controller in VCB Operation Tests

F-20M可编程序控制器在试验真空断路器操作中的应用

By summarizing the practical experience in VCB setting , several countermeasures are given to decrease switch on oscillation .

总结了调试真空开关实践经验，给出了几种减小合闸弹跳的方法。

However , the greater the contact 's pressure is , the smaller the VCB 's switch on oscillation is .

而触头压力越大，合闸弹跳越小。

This paper will focus on introducing some VCB bouncing hazards , and the factors affecting bouncing restraints .

本文着重介绍一下真空断路器弹跳的危害，影响弹跳的因素及抑制的措施。

A few protection types for VCB operation over voltage are analyzed and compared , and some suggestions for selecting protection types in engineering design are given .

分析比较了在高压厂用电系统中保护真空断路器操作过电压的几种方式，提出在工程设计中采用何种保护方式的建议。

The test parameters of synchronous VCB are measured in the testing , testing results show that the action of the developed equipment is correct and reliable .

最后在试验过程中实测了同步断路器的参数，试验结果表明该装置动作准确、可靠。

Vacuum Circuit Breaker ( VCB ) is widely used in power supply and distribution system , which plays both contol and protection functions in electric network .

真空断路器广泛应用于各种供配电系统中，在电网中起着控制和保护的双重作用。

If possible , to decrease the opening travel and increase the over opening travel can increase VCB 's switch off speed and short circuit break capacity .

在条件允许的情况下，适当缩小触头开距，增加超行程，可以提高分闸速度，因此可以提高开断短路电流的能力。

Because the air insulated fixed type switchgear panel is applied to the VCB , so its size is small and no maintenance is required .

它本身不含有任何有害气体，且尺寸小和免维护，可使空气绝缘的固定柜做到非常紧凑的程度。

At first , theoretical analyses are discussed about various VCB switching overvoltages ' generating process . This can provide theoretical basis for overvoltages ' analysis and protection research .

本文先对真空开关各种操作过电压产生过程进行理论分析，为过电压分析及保护仿真研究提供了理论依据。

Based on the Vacuum Circuit Breaker ( VCB ) structure , adopting the Finite Element Method ( FEM ), magnetic field mathematics model of three phases VCB is established .

基于真空断路器的结构，采用有限元方法建立了三相真空断路器的磁场数学模型。

By tests , the switch on and switch off oscillations of vacuum breaker ( VCB ) are analyzed , and their causes and countermeasures are explained .

通过试验，分析了真空断路器的合闸弹跳与分闸弹振，说明产生的原因及克服的方法。

The permanent magnetic actuator ( PMA ) is characteristic of few parts , free maintenance , high reliability and adaptability to the vacuum circuit breaker ( VCB ) .

永磁操动机构的零部件少、免维护、可靠性高，与真空断路器的特性配合良好。

Take hold of the sliding handle , Pull to sliding handle inside , release truck closedown , and pull out the VCB truck to service truck .

两手握住断路器手车的把手，朝里扳动收取定位销，同时朝外拉断路器手车到维修小车上。

The development of vacuum circuit breaker ( VCB ) technology depends on the improvements of two main technologies , i.e. , the technology of vacuum interrupter and that of actuator mechanism .

真空断路器技术的发展取决于两个技术的发展：真空灭弧室技术和操动机构技术。

Comparison on the Condition for Laryngeal Mask Airway Insertion Obtained by Sevoflurane VCB Inhaled Comparative Study of Neuromuscular Blocking Effects of Cisatracurium During Sevoflurane and Propofol Anesthesia

七氟烷与丙泊酚麻醉诱导喉罩置入条件的比较七氟烷和异丙酚对顺式阿曲库铵药效学的影响

Based on the detail analysis of PMA of VCB in existence , a novel PMA of VCB , which is monostable , has two coils , is proposed .

在对目前已有的真空断路器永磁操动机构进行详细分析的基础上，本文提出了一种结构新颖的单稳态、双线圈结构的永磁操动机构。

SMVS mainly engages in developing and manufacturing medium voltage vacuum interrupters ( VI ), vacuum circuit breakers ( VCB ) and gas insulated switchgear ( GIS ) as well as after sales services in China .

公司在中国主要从事陶瓷真空灭弧室、真空断路器、气体绝缘开关柜及相关产品的开发、制造、市场销售及技术售后服务。

The experimental model with single break and that with triple breaks are built up respectively , and a lot of impulse breakdown tests for vacuum extinction chamber model with single break and VCB model with triple break are conducted .

建立了三断口真空开关试验模型，对单断口真空灭弧室模型和三断口真空开关模型进行了大量的冲击击穿特性试验。

It is suggested that the length of radial lead-out connections on two ends of the vacuum interrupter should be reduced as far as possible to minimize the influence of external connecting buses on VCB breaking capability .

建议尽量缩短真空灭弧室两端径向引出线的长度，以减少外部接线对灭弧室开断能力的影响。

When the vacuum circuit breaker ( VCB ) turns on or off , it will result in the large spectrum and high frequency over-voltage due to the electromagnetic oscillations among equipment of the network , which will threaten the motor insulation , even the whole power system .

真空断路器在投合、断开高压电动机时，由于电网中的电气元件发生电磁振荡而形成幅值大、频率高的操作过电压，对电动机的绝缘造成威胁，影响电动机甚至整个传动系统的正常运行。