复位继电器

According to this phenomenon, we analyze the original circuit structure of unreasonable, in the original circuit has added a intermediate relay (5J), a limit switch, and take advantage of the original paper cutting, the unused in the buttons on the normally closed contact, specifying the control switch some of cam shape change, so that you solve the Cutter knife to cut the ?

根据这种现象，我们分析了原电路的不合理结构，在原电路中添加了一只中间继电器（5J）、一只行程开关，并利用了原切纸按钮中未用上的常闭触点，同时将控制行程开关的凸轮形状稍加改变，这样就彻底解决了切纸刀切下后自动复位难的问题，使切纸速度达到了要求的次数。

Axotomized, turn the paper of the cam disconnect switch on the side of the circuit, forcing 3XK press paper cutter and a loss of power, but the operators have not yet had enough time to release the button, turn the paper cutting of the cam over the limit switch 3XK, 4J and 1 c was electric pick-up, gnashing paper cutter does not reset, in this case, a rotating cam on the other side lost your limit switch XM, intermediate relay 5J load-disconnected.

纸张切断后，转动的凸轮一侧断开行程开关3XK的回路，迫使压纸和切纸断电，但是操作者还未来得及松开切纸按钮，转动的凸轮滑过行程开关3XK后，4J和1C仍得电吸合，造成切纸刀不复位，这时，转动的凸轮另一侧断开了行程开关XK，中间继电器5J失电断开。

This paper introduces the selection of the heat relay s type and current its reset mode, points out that connection wire section of rated current of heat relay should be selected according to strict rules it can not take as the protective device of wire short circuit puts forward working environment and temperature of heat relay and matters needing attention of reset after operation.

介绍了热继电器的类型选择、电流的选择、复位形式，指出热继电器的连接导线截面应按规定选择，热继电器不能作为线路的短路保护装置，热继电器的工作环境温度，动作后的复位等注意事项。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。