电工电子实验装置加装急停断电保护电路  

Installation of emergency power-off protection circuit in electrical and electronic experimental device

作　　者：张涛 黄大刚 包秀娟 ZHANG Tao;HUANG Dagang;BAO Xiujuan(College of Artificial Intelligence,Nankai University,Tianjin 300350,China)

机构地区：[1]南开大学人工智能学院

出　　处：《实验技术与管理》2019年第11期245-247,共3页Experimental Technology and Management

基　　金：国家级虚拟仿真实验教学中心和天津市普通高等学校实验教学示范中心资助项目;南开大学2018年教学改革与教学建设项目“基于NI平台的模电、数电实验课程改革”阶段性成果

摘　　要：电工电子实验中380 V电压等级的强电类实验占相当大的比例,必须要考虑实验的安全性,防患于未然。为电工电子实验装置加装急停断电保护电路是非常有效而且必要的一种方式。设计方案选用急停按钮、交流接触器和带漏电保护的空气开关,用户按下急停开关给交流接触器电磁线圈通电,电磁线圈产生的机械动作带动触头接通,相线L1通过电阻接地产生漏电,漏电保护器切断电源。该装置实际使用安全稳定,效果良好。In electrical and electronic experiments, 380 V voltage level of high-voltage experiments account for a considerable proportion, and the safety of experiments must be taken into account to prevent accidents before they occur. It is an effective and necessary way to install the emergency power-off protection circuit for electrical and electronic experimental device. The design scheme chooses emergency stop button, AC contactor and air switch with leakage protection. Users press the emergency stop switch to energize the electromagnetic coil of AC contactor. The mechanical action produced by the electromagnetic coil drives the contact to be connected, the phase line L1 generates the leakage through resistance grounding, and the leakage protector cuts off the power supply. The actual utilization is safe and stable, and the effect is good.

关 键 词：电工电子实验 交流接触器 急停断电保护 

分 类 号：TN7[电子电信—电路与系统]