官员表示，没有迹象表明，飞机在坠毁前遭到了地面火力袭击。因为飞机在失事前是断路器着地的，很可能是机械故障。
There was no indication of hostile fire, officials said, saying it appeared the chopper went down because of some other problem, possibly mechanical.
主要介绍了高压真空断路器机械特性测试仪的硬件电路设计和软件程序的编程。
It mainly introduced hardware circuit design and software program programming for high-voltage circuit breaker mechanical characteristic tester.
介绍了如何实现GG1B（F）（Z）型高压开关柜整体式真空断路器与隔离开关的机械联锁。
This article introduces how to realize the mechanical interlock of integral vacuum circuit breaker with the disconnector inside type GG1B(F)(Z) switchgear cabinet.
永磁操动机构是新一代真空断路器的操作系统，是由机械操动向电子操动转变的关键。
The permanent magnet actuator, as the new operation system of vacuum circuit breakers, is the key to the transformation from mechanical actuation to electronic actuation.
介绍了一种断路器机械状态在线监测与诊断的方法。
This paper introduces a method that the mechanical condition of circuit breaker can be monitored and diagnosed on-line.
本文结合实践经验从理论上分析了真空断路器机械参数的选择原则及经验数据。
This paper analyzes selection principle of mechanical parameters of a vacuum breaker and empirical data in theory combined practical experience.
研究了真空断路器机械特性的在线监测方法。
The on-line monitoring method for mechanical characteristics of vacuum circuit breakers is researched in this paper.
在详细介绍小波包与特征熵的基础上，将二者结合提出了一种诊断高压断路器机械故障的新方法，并给出了切实可行的诊断步骤和分析。
Based on the introduction of wavelet packet and characteristic entropy, a new method to diagnosis fault for high voltage circuit breakers is presented, and its steps and analysis are also introduced.
它主要是对断路器机械特性参数进行测量、处理，是测试系统的基础。
It completes the functions of gathering and measuring breaker's mechanical character parameter, and it is the base of the test instrument.
最终的目标是从真空断路器机械特性方面入手，降低操作并联电容器组时的重燃率、并减小操作过电压危害。
The aim is to reduce the reignition rate and over-voltage damage from the perspective of the mechanical characteristics of the vacuum breaker switching shunt capacitor Banks.
高压断路器的绝大部分事故源于机械方面的原因，故研究其机械故障诊断具有重要的意义。
Most faults of circuit breaker is the machinery faults, so study the method of faults diagnose for mechanical parts in circuit breaker is important.
混合式断路器(HCB)结合了机械式断路器和固态断路器的优点，是国际上断路器研究的新方向。
Hybrid circuit breaker (HCB) combining the advantages of mechanical circuit breaker and solid state circuit breaker is new research direction in the world for circuit breaker.
只需一步操作就可完成智能断路器的机械复位和电子复位。
The mechanical reset and the electronic reset of the intelligent circuit breaker can be completed by one step of the operation.
工作技能：对断路器电气及机械原理有较深入的理解。
Job skills: electrical and mechanical principles of circuit breakers have a more in-depth understanding.
在适应现场需要的基础上对断路器机械特性测试仪及数据管理检修指导系统进行了设计。
It designs the breaker mechanical characteristic test instrument and data manage inspection system facing the spot needed.
在详细介绍小波包与特征熵的基础上，将二者结合提出了一种诊断高压断路器机械故障的新方法，并给出了切实可行的诊断步骤和分析。
A new method to diagnose faults for high voltage circuit breakers is presented in the paper based on the introduction of wavelet packet and characteristic entropy.
合闸弹跳是真空断路器机械特性的重要参数之一， 真空断路器的出厂标准中一般都规定了合闸弹跳时间，这是因为合闸弹跳幅度越大。
The mechanical properties of switching VCB one of the important parameters. VCB general provisions of the factory standard switching time, it is because the greater the rate of switching.
地铁牵引变断路器是地铁牵引供电系统的重要设备，地铁牵引变断路器的机械和电气动作频繁，易于发生故障。
Breaks of the metro traction substation are important equipments that have frequent mechanical and electrical actions, as a result, they are prone to failure.
永磁操动机构是新一代真空断路器的操作系统，是由机械操动向电子操动转变的关键。
A sort of permanent magnetic operating mechanism for vacuum breaker powered by super capacitors was described.
高压断路器大部分故障源于机械方面，因此研究机械故障具有重要的意义。
So it is necessary to develop the on-line monitoring and fault diagnosis for the real-time state of he HV circuit breaker.
高压断路器大部分故障源于机械方面，因此研究机械故障具有重要的意义。
So it is necessary to develop the on-line monitoring and fault diagnosis for the real-time state of he HV circuit breaker.
应用推荐