大电流热保护器的多参数自动测量系统  

Automatic Testing System for Parameters of High-current Thermoprotector

作　　者：魏艳红[1] 许昌[1] 祝铭尉[1] 

机构地区：[1]中国计量学院机电工程学院,浙江省310018

出　　处：《微计算机信息》2008年第19期140-142,共3页Control & Automation

摘　　要：本文介绍的大电流热保护器参数自动测量系统,其控制系统以PLC为核心,配备触摸屏、微型打印机等。系统采用恒流电子负载提供稳定的大电流(100A),利用霍尔元件检测电流的有无,精确记录热保护器断开或闭合的时间;同时可测试其绝缘电阻是否合格,对于热保护器动作时产生抖动(振颤)的情况亦可进行检测。该系统具备多参数的测试功能,测试精度高,操作简便,并提供数据统计、打印和产品分选等功能,提高了工作效率。The testing system for parameters of high-current Thermoprotector uses PLC as its core ,equipped with Touch display screen and micro-printer. It also employs constant-current electronic load to supply constant high-current（lOOA）,and utilizes Hall element to convert current signal to voltage signal feedbacked to PLC, which record the trip time or recovery time of thermopretector .It can test whether the thermoprotector＇s insulation resistance is qualified ,while the chattering can be detected. The system can test several parameters accurately and simply, and provide the function of data statistics , print and product sorting which enhance the work efficiency.

关 键 词：大电流保护器 恒流电子负载 断开时间 

分 类 号：TP216[自动化与计算机技术—检测技术与自动化装置] TM592[自动化与计算机技术—控制科学与工程]