In Qinghai electrical power system 80% of the 6～10kV circuit breakers in service are the SN series circuit breaker.
青海电力系统SN系列少油断路器在已运行的6～10kV中压断路器中约占其总数量的80％左右。
Has 5000 square meter production workshops, the main product includes: Outside the indoors the high vacuum circuit breaker series, the vacuum load switch series, the sulfur hexafluoride circuit breaker series, the isolator series, the earth open the series, the arrester series, the fuse series, the high-pressured charged monitor series, the contact to touch the arm series, the high and low pressure power distribution cabinet series, the low pressure contact device series, the insulation series and so on multi-series, multi-specification product production and development.
拥有5000余平方米生产厂房，主要产品有：户内外高压真空断路器系列、真空负荷开关系列、六氟化硫断路器系列、隔离开关系列、接地开系列、避雷器系列、熔断器系列、高压带电显示器系列、触头触臂系列、高低压配电柜系列、低压接触器系列、绝缘件系列等多系列，多规格产品的生产及开发。
Locking opening and closing of circuit-breaker is a common fault in power system, the operating methods and skills of insolating the locking circuit-breaker are not same in different main connecting mode.
断路器闭锁分合闸是一种常见的电力设备故障，不同的主接线方式下，隔离闭锁断路器的方法及技巧都不同。
In this paper the analysis and solution of following key technical problems are presented: the drafting of commissioning scheme; the selection of the position in AC power grid where single-phase earth fault occurs while there is only one AC feeder at both sides of converter station and corresponding test method, the principle and disposal of the last circuit breaker trip-out function and the perfection of both software and hardware for it; the perfection of control and protection function of frequency converter for cooling of valves.
介绍了系统调试中几个关键技术问题的分析和解决过程：系统调试方案的编写过程；在换流站两侧均为单回交流进线的情况下交流系统单相瞬时故障点的选择和试验方法；最后断路器跳闸功能的原理、配置原则及软件和硬件的完善；换流站阀冷却变频器控制保护功能的完善。
An integral AC power circuit breaker is provided on the rear panel and a standard IEC power connector is provided.
一个完整的交流电源断路器提供的后面板和标准IEC电源连接器提供。
The thesis mainly concerns the following aspects: the relay protection and its trip-close circuit of two circuits transmission-lines are stand alone. The device has the ability of phase-trip that is owns transmission line single phase, 2 or 3phases fault only fault phase tripped. so as to making the power system contact as close as possible. The function of reclosing distribute into relay protection of line and breaker, so it is easy to get no-serious fault information of line protection and realize self-adapted multi pole reclosing. The breaker reclosing depend on the state of owns breaker andthe adjacent breaker. The criterion of serious fault and the sequence reclosing is simple and useful.
本项目具有如下特点：两回线的保护装置及跳、合闸回路完全独立；装置具有分相跳闸功能，即本线单相、两相、三相故障时均只跳故障相，使得故障时系统联系尽可能紧密；重合闸功能合理分配在线路保护和断路器保护中，充分利用了线路保护的信息实现无严重故障判别和分相顺序重合策略的自适应重合功能，由断路器保护根据断路器本身的工作状态和相邻断路器的配合关系实现重合出口；判断严重故障的判据及分相顺序重合闸原理简单合理，具有实用意义，降低了重合于永久故障对系统的冲击。
In order to improve the reliability of electric power system with testing the condition parameters of circuit breaker, the wavelet transform method of coil current was proposed. This tester used the Hall current sensor which was respond to the instantaneous signal sensitivety to test the closing and trip coil current signal, and used the high-precision photoelectric encoder and complex programmable logic device to measure the signal for moving contact accurately.
为了准确测试断路器状态参数以提高电力系统的可靠性，提出了线圈电流信号的小波变换处理方法，利用对瞬时信号反应灵敏的霍尔电流传感器进行断路器合、分闸线圈电流信号的测试，使用高精度光电编码器及复杂可编程逻辑器件实现动触头行程信号的精确测量。
Of our country power system use vacuum circuit breaker have a history of more than 20 years already, have several tens of thousands of Taizhong pigeonhole grade vacuum circuit breaker come into operation every year, and there are the electromagnetism and spring type two kinds mainly in its operating organization, it is greatest to regard electromagnetic type organization's consumption as.
我国电力系统使用真空断路器已有20余年的历史，每年都有数万台中压等级真空断路器投入使用，而其操作机构主要有电磁和弹簧式两种，以电磁式机构用量为最大。
WYJ-3F Series high voltage electric power equipment insulation online monitoring system, 2. WYJ-3S Series Live Test Device, 3. WYZB-2 power transformer on-line detection system, 4. KGY Characteristics of high voltage Circuit Breaker Tester, 5. SDR-Series loop resistance tester, 6. BJZ-20A transformer DC resistance tester, 7. Wireless Type Switchgear Temperature Measurement System, 8. Transformer Neutral point of protection device, 9. Capacitance Inductance tester, 10. YKD-2000 Automatic anti-jamming two power bridges
自主开发的产品有：1、WYJ-3F系列高压电气设备绝缘在线监测系统2、WYJ-3S系列带电测试装置3、WYZB-2型电力变压器在线检测系统4、KGY-系列高压断路器特性测试仪5、SDR-系列回路电阻测试仪6、BJZ-20A变压器直流电阻测试仪7、开关柜无线式测温系统8、变压器中性点保护装置9、电容电感综合测试仪10、YKD-2000自动抗干扰两用电桥。
So compared to the traditional circuit breaker, the intelligent one has the higher capability vs price ratio, and it is much fitter to the development of modern power system. The hard core of the intelligent circuit breaker is intelligent measure and control unit.
保护电路动作时的故障参数，可以存储在非易失存储器中以便查询，与传统断路器相比有着很高的性价比，更适合现代配电电网的要求。
Main Breaker A main breaker is a circuit breaker at the input or output of the bus, through which all of the bus power must flow.
主开关 主开关是在母排输入或输出端的线路断路器，所有的电流都要从那通过。
The design of the generator line multiplying automatic synchronizing unit synchronizing unit SID-2CM `s coordinating with several synchronization point sharing synchronizing unit automatic selector switch SID-2X is used in Shanxi Datang International YunGang Thermal Power Co. LTD, realized the No. 1 unit`s generator –transformer-line group circuit breaker, high voltage plant transformer circuit breaker, start spare transformer circuit breaker accept change DCS automatic control devices.
山西大唐国际云冈热电有限责任公司采用 SID-2CM 型发电机线路复用自动同期装置与 SID-2X 型多同期点共用同期装置自动选线器配合的设计，实现了1号机的发—变—线组断路器、高厂变断路器、启备变断路器接受 DCS 的全自动控制。
The product is also a special facility of electric power and industrial enterprises for treatment of various insulation oils including non-conformable transformer oil, mutual inductor oil and circuit breaker oil, as well as a best choice for vacuum oiling of power equipment and drying of moisture of power equipment.
该产品也是一个特别设施，电力和工业企业用于治疗各种绝缘油包括非符合变压器油，互感器油及断路器油，而且是一个最好的选择真空注油的电力设备和烘干水分电力设备。
1 Non-elevator parts and equipment, including: power mains that offered by customer, circuit breaker, structural of lift well, machine room ventilation equipment, water or sump pump equipment for lift pits
非电梯本身的零部件及设备，包括业主提供的主电源开关，断路器，井道的土建结构，机房通风设备，用于地坑的抽水设备或油回收泵
Especially for the research and development of these products such as: mini circuit breaker, moulded-case circuit breaker, leakage circuit breaker, air circuit breaker, surge protective device, isolating switch, double-power automatic transfer switch, motor soft starter, VVVF and distribution box, there is one obvious point for its relatively ahead and professional features.
尤其在小型断路器、塑壳断路器、漏电断路器、万能式断路器、电涌保护器、隔离开关、双电源自动转换开关、电机软起动器、变频调速器、配电箱等领域的研究和开发存在着相对明显的超前性和专业性。
Doors of the compartments or the rooms of circuit breaker are opened. We can afford various power distribution
为IP2X。具有架空进出线、电缆进出线及其它功能方案，经排列、组合后能成为各种方案形式的配电装置。
Thepresent maintenance system has been unsuitable for the turn of the electric power market, soits necessary to apply on-line monitoring and fault diagnosis on the real-time state of thevacuum circuit breaker, to provide reference for the maintenance of the power plant.
目前的检修制度已经不能适应电力市场变化的新形势，因此有必要对真空断路器实行在线监测和故障诊断，为电厂的优化检修提供有力依据。
Vacuum circuit breaker has been developed for 20-30 years. It has great development potential as power circuit breaker.
真空开关是最近二、三十年发展起来的新一代开关电器，是一种极具发展潜力的电力开关。
This paper, based on above analysis and research, suggests the insulation level of the main equipment in UHV system (including transformer, circuit breaker, disconnecting switch, reactor and MOA), which can be used as a references to research, manufacture of UHV equipment and design of power substation and transmission line.
在此基础上，对特高压系统的主要变电设备(包括变压器、断路器、隔离开关、电抗器和MOA)和输电线路的绝缘水平提出了建议，以供我国特高压设备研制和线路变电所设计参考。
Main Products professional sales agent of the Company: 1, OMRON a full range of products; 2, KEYENCE 3, IDEC; 4, FUJI; 5, MITSUBISHI (Mitsubishi low-voltage) 6, NKK Switches, such as OMRON: programmable logic controller touch screen servo motor inverter switching power supply rotary encoder pressure sensors proximity switches, liquid level controller counter Micro Switch temperature air system, and limit switch photoelectric relay Switches Solid State Relays, Time Relay Contactor circuit breaker and so on.
主要产品本公司专业代理销售：1、OMRON欧姆龙）全系列产品；2、KEYENCE3、IDEC；4、FUJI(富士低压；5、MITSUBISHI6、NKK开关等 OMRON：可编程控制器触摸屏变频器伺服电机开关电源旋转编码器压力传感器接近开关、计数器液位控制器微动开关温度空制器、限位开关继电器光电开关固态继电器、时间继电器接触器断路器等。