工程师必须掌握的2个电气原理图.docVIP

1.基本的直接启动控制线路 按下启动按钮，KM线圈得电,KM常开辅助触点自锁，绿灯亮，电机运行； 按下停止按钮，KM线圈失点，辅助触点复位，红灯亮，电机停止。 2 直接启动，延时停止 通过时间继电器作用，延时使回路断开。 3 控制电机正反转 使用双重互锁，采用复合按钮和2个接触器。 将2个接触器的常闭辅助触点相互串联在对方回路中，安全方便，避免了短路的发生~ 4 顺停、逆停循环 5 电机轮流循环启动 6 三台电机轮流循环 7?单按钮控制电机启动停止 8 时间继电器控制双速电机 9 定子串电阻降压启动 这个不太常用！ 10 延边三角形降压启动 这个知道就行！！！ 11 星三角降压启动照片名称：星三角降压启动实物接线图照片名称：星三角照片名称：星三角启动控制线路图照片名称：星三角 （这个很重要，也和简单，也很实用的降压启动，一般电机大于7.5千瓦，为了保护电压网就应该采取降压的方式。） 12 自耦降压 这也是很使用的降压启动控制线路。一般大于40千瓦的电机使用。 guide sex further enhanced, documents handle and running of speed obviously speed up, program gradually specification, conference service and Chief reception of quality and level has has new of improve, Logistics support capability further strengthened. 　　Document management, confidential, confidentiality, duty, letters and other items have been significantly improved. 4, Office construction increased at all levels. City Government offices adhere to strengthen and improve the construction of the system as a breakthrough, has developed a series of code of conduct, continuous improvement of operational mechanism, sound and the implementation of the rules and regulations, and adhere to the system of managing people, according to the rules, the work gradually into the orbit of institutionalization and standardization. 　　Focus on strengthening ideological and political construction of the contingent of cadres, and actively carried out various business training, knowledge of the Office team structure has been optimized, to broaden the range of knowledge and operational capacity grows, nurtured a political firm, sharp, professional and innovative staff, created solidarity, striving for the top, pragmatic, dedication, good image. However, with the State Council and the provincial Government of the national, the provinces Secretary-General meeting of government offices under the new situation the functions and priorities compared to the requirements of our gap is still very big. Main is daily in the passive meet of more, activ