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发明名称
电子热继电器
摘要
本实用新型涉及一种电子热继电器,由电流取样、隔离放大、峰值整流整定、电压信号放大、反时限和关断执行等电路组成,其特征是取样电路采用原热继电器热元件,并增设了非过载封锁电路、断相、短路保护电路。与原热继电器相比,具有功能齐、过载保护值准确、能耗低等优点,是一种热继电器的更新换代产品。
申请公布号
CN2181113Y
申请公布日期
1994.10.26
申请号
CN94200727.1
申请日期
1994.01.22
申请人
王正存
发明人
王正存
分类号
H02H7/085;H02H7/09
主分类号
H02H7/085
代理机构
代理人
主权项
1、一种电子热继电器、由电流取样、隔离放大、峰值整流整定、电压信号放大、反时限、关断执行等电路依次连接组成,其特征在于电流取样电路中采用原热继电器热元件RA、RB、RC作为电流取样传感器,该电流取样传感器RA、RB、RC串接在电动机三相主电路中,其两端接隔离放大电路输入端(电压互感器TV的初级)。
地址
325600浙江省乐清市乐成镇建设东路100号
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