合闸

With the circuit-breaker closed, withdrawal movement of the withdrawable part must be blocked after only half a turn of the crank in the anti-clockwise direction.

如果断路器处于合闸状态，手车向工作位置的操作必须被机械联锁锁定。

With the circuit-breaker closed, insertion of the withdrawable part towards the service position must be blocked after only half a turn of the crank in the clockwise direction.

如果断路器处于合闸状态，手车向工作位置的操作必须被机械联锁锁定

When the earthing switch is closed, it is already in position!

如果接地开关处于合闸位置，它已处于此位置

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。

When compensating devices are switched by vacuum switches, if they are switched on group, the inrush current can be controlled by inserting suitable current-restrained reactance in-series. Since the restriking overvoltage is pertinent to the capacity of compensating devices and the time of restriking and igniting, the overvoltage can be restrained by arresters with asterism connection at the entrance of the capacitors. Although switching capacitance devices will bring up high interception cross overvoltage, the metal-oxide arrester can limit this overvoltage in the system designed in the thesis, and naturally the compensating devices can operate normally.

使用真空开关投切并联无功补偿装置，在分组投入并联电容器时，串联合适的限流电抗，合闸涌流可以得到控制；重燃时的过电压值与并补装置补偿容量，重燃发生时刻和燃弧时间有关，电容器进线端的三星接法避雷器可以抑制其过电压；切并联电抗器时会产生较高的截流过电压，金属氧化物避雷器可以使本文中所建系统的截流过电压得到限制，并联无功补偿装置可以正常切合。

An overhanging part, the apron of the carriage, may be engaged with the feed rod to give continuous feed motion, or with a lead screw for cutting of threads.

一个伸出的部分，支架的围裙，也许以饲料标尺给连续的合闸动作，或者与螺纹切口的丝杠衔接。

After switching on for the first time by controlling on site, when startup current declined,switch off breaker to see if the rotation direction is right,or change phase sequence of motor power cable.

3.12.2 采用现场控制第一次合闸后，待起动电流下降，即行断开，看电动机旋转方向是否正确。如果不正确，可更换电动机动力电缆的相序。

Closed phase angle has important effect on the dynamic behavior of AC contactors including contact bounce , especially.

合闸相角对交流接触器的动态特性，尤其是触头碰撞弹跳有重要影响。

The feed screw is locked and the truck can't be moved when the VCB is closed.

当断路器合闸时，丝杆被锁定，不能移动手车。

Main control circuit adopts electric controlled to exchange electronic switch technology and passing zero detection techniqueing advanced electronic device, which realize to pass zero level and smooth to its cutting ,shuting floodgate and bludgoning into , no over voltage when operating it , there is no electric arc to fire again to shove to have to throw condenser bank, condenser need is it can come into operation again to discharge, its cutting restriction of number of times to throw.

主控制电路采用电力电子器件可控交流电子开关技术和先进的过零检测技术，实现电容器组的过零平滑投切、无合闸涌流冲击、无操作过电压、无电弧重燃，电容器无需放电即可重新投入使用，并且不受投切次数的限制。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。