带剩余电流保护的三相过/欠压小型断路器的设计  

Design of Three-Phase Overvoltage and Undervoltage Miniature Circuit Breaker with Residual Current Protection

作　　者：柏华东[1] 李月军[1] 杨军[1] 

机构地区：[1]杭申集团杭州之江开关股份有限公司,浙江杭州311234

出　　处：《低压电器》2013年第12期30-32,共3页Low Voltage Apparatus

摘　　要：通过市场现状分析,设计了一种具有过/欠压和剩余电流保护的三相小型断路器。阐述了各个功能模块实现的电路原理和方法。利用集成运放的放大和比较功能,实现了三相电的过/欠压和剩余电流检测功能。该产品具有良好的实用价值。Through the analysis of the market situation, this paper put forward a design of three phase miniature circuit breaker with overvohage, undervohage and residual current protection. The circuit principle and method of each function module were described. By using of the amplification and comparison function of integrated operational amplifier, the detection functions of three phase overvoltage, undervoltage and residual current were realized. MCB has a good practical value.

关 键 词：小型断路器 剩余电流 过电压 欠电压 

分 类 号：TM561[电气工程—电器]