开关装置

This paper gives out the principles and improving schemes of transformer discharge equipment and resonance booster discharge equipment. By detecting the current in the main circuit, the gap's breaking-down can be identified, and the single chip micro-computer will send out corresponding control signal to make the IGBTs to switch off or cut off the input voltage, by this mean, we can make sure that every time of the experiment, the sample will discharge only once. The paper also introduces the principle of the protection circuit. At last, the experimental waveforms were listed, which prove the feasibility of the high voltage discharge fast switch-off device.

该文给出了变压器和谐振升压器2种高压放电试验装置的原理以及改进方案，通过检测主回路电流大小判断间隙是否被击穿，由单片机发出相应控制信号，采用IGBT等开关器件控制试验电压的通断，保证了试品每次试验只进行一次放电，介绍了保护电路的原理，给出了试验波形，证明了此高压放电速断装置的可行性。

The Owners to provide deckhands to open and close hatches as required and rig cargo gear before the Vessel's arrival at loading and discharging berths or places, also provide deck and/or gangway watchmen and one winchman and/or cranedriver per hatch to work winches and/or cranes day and night as required.

船东提供甲板，水手按需要开关舱，在船到达装卸泊位或地点之前抱货机装置就绪，并提供甲板及／或舷梯看更，配备每舱绞车工及／或转盘吊工一人，按需要昼夜操作，如港方或工会规章制止水手开关舱（或操作绞车及／或转盘吊，则租船人雇岸上工人代替支付费用。

The Owners to provide deckhands to open and close hatches as required and rig cargo gear before the Vessel's arrival at loading and discharging berths or places, also provide deck and/or gangway watchmen and one winchman and/or cranedriver per hatch to work winches and/or cranes day and night as required. If the rules of the Crew from opening and closing hatches or driving winches and/or cranes, then shore labour to be employed in lieu thereof and paid by Charterers.

See also Clause 15 船东提供甲板，水手按需要开关舱，在船到达装卸泊位或地点之前抱货机装置就绪，并提供甲板及/或舷梯看更，配备每舱绞车工及/或转盘吊工一人，按需要昼夜操作，如港方或工会规章制止水手开关舱或操作绞车及/或转盘吊，则租船人雇岸上工人代替支付费用。

Disconnector is a sort of high voltage switchgear without special arc-extinguishing device.

隔离开关是一种没有专门灭弧装置的开关设备，是我国西北电网建设第一条750kV线路的重要设备之一。

The work of hardware part is the fixing of 3 dimension working platform and application device of fiber. Hardware designing and installing contain shutter and control box. The box includes connecting card, emergency stop, stepping motion driver, electrical source, and transformer.

硬件部分的工作是安装三维控制台以及光纤的连接装置，设计和制作了电动快门与控制箱，解决了转接卡、电机驱动器、急停开关、电源变压器以及电源开关的连接问题。

Th is paper presents a novel hybrid circuit breaker device whose motion part is composed of Insulated Gate Bipolar Transistor and Mechanical Circuit Breaker .

将机械开关的静态特性和固态开关的快速性相结合研制了一种新型混合式断路器装置。

Aimed at the problem of vacuum tube s working in vacuum switch applied in coal mines, the reasons and results of air escape taking place in vacuum tube s,a modified step is adopted to set up a protection unit for vacuum tube in vacuum switch.

针对真空开关在煤矿推广应用中真空管存在的问题，以及一旦漏气造成的后果和原因进行了分析，提出改进措施，并对在真空开关增加真空管的保护装置进行了探讨。

On the instrument cabinet, there is power switch, start switch, stop pushbutton, main engine exhaust thermometer, lub oil pressure gauge, lub oil thermometer, cooling water thermometer, main engine revolution indicator, starting battery voltmeter, cooling water high temperature and lub oil low pressure alarm device; beside the gear box, there is working oil pressure gauge, lub oil thermometer, lub oil low pressure alarm , working oil low pressure alarm and lub oil high temperature alarm.

本船主机有机带控制报警仪表箱，仪表箱上设有电源开关、启动开关、停车按钮、主机排气温度表、滑油压力表、滑油温度表、冷却水温表、主机转速表、启动蓄电池电压表、冷却水高温及滑油低压报警装置；齿轮箱机旁配工作油压力表、滑油温度表、滑油低压报警、工作油低压报警及滑油高温报警。

Using this method, the circuit can be operated without voltaic art and impact current through power electronic AC switch and the switch can be monitored and protected by microcomputer device.

它通过交流电力电子开关实现电路的无电弧、无冲击性操作，同时通过微机装置对开关进行监控和保护。

The switch position of butterfly disc is limited by the adjusting screw pole on the worm gear transmission device.

蝶板的开关位置都由蜗轮传动装置上的调节螺杆限位，指示牌指示阀的开关位置。

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。