探讨毕业设计147三相电源监视(电动机保护器)毕业论文.doc

　　探讨毕业设计147三相电源监视(电动机保护器)毕业论文 探讨毕业设计147三相电源监视(电动机保护器)毕业论文 导读：毕业设计147三相电源监视(电动机保护器)毕业论文 毕业设计（论文） 课题名称： 三相电源监视（电动机保护器） 学生 专业班级： 分 院：学 号：指导教师： 2005年 5 月 15 日 三相电源监视 (电动机保护器) 摘 要： 我介绍的是一个电子式三相电源监视器（又称相序保护器、电压继电器以下简称监视器）主要用于交流50/60Hz，额定电压460V以下的电路中，作为对三相电动机输入电源的电压过高、电压过低、缺相、逆相、三相电压不平衡提供继电保护。 关键词： 电动机 三相电源 保护 电压取样 【Abstract】 utually electronic of the poonitor(mutually preface protection the machine, electric voltage calls the monitor as folloainly useds for frequency the 50/60 Hz, the sum voltage 460 V the folloutually motor inputs the electric supply to lead high,the electric voltage lead loutually, negative mutually,three mutually voltage unbalance. 【Keyotor 、 three mutually of the popling 目 录 摘 要 （2） 第 2 页 共 14 页 一、引言····································································································（4） 二、电动机保护装置及其发展趋势························································（5） 三、电动机保护在国民经济和节能事业中的重要意义························（6） 四、电动机保护器产品介绍···························································· 3 4 5 6 7 8 9 探讨毕业设计147三相电源监视(电动机保护器)毕业论文 导读：毕业设计147三相电源监视(电动机保护器)毕业论文········（8） （一） 串芯式电流型保护器··································································（8） 1、电机绕组烧毁原因及保护措施··················································（8） （1）过热保护··················································································（8） （2）过流保护··················································································（8） （3）断相保护··················································································（8） 2、对电动机保护的要求··································································（9） 3、设计线路图··················································································（9） 4、电路工作原理············································································（10） （二） 三相电源型保护电路的设计····················································（10） 1、缺相保护电路·············