小型断路器的延时特性建模与仿真研究  

Modeling and Simulation of Delay Characteristics of Miniature Circuit Breaker

作　　者：杨宇 司莺歌 李求杰 杨文勇 尹冬梅 YANG Yu;SI Yingge;LI Qiujie;YANG Wenyong;YIN Dongmei(Zhejiang CHINT Electrics Co.,Ltd.,Yueqing 325603,China)

机构地区：[1]浙江正泰电器股份有限公司,浙江乐清325603

出　　处：《现代建筑电气》2025年第3期40-45,共6页Modern Architecture Electric

摘　　要：小型断路器过载脱扣特性是断路器实现线路过载保护的一个关键特性,延时脱扣特性的稳定性决定了过载保护的可靠性。小型断路器过载保护主要依靠热双金属元件过载发热弯曲形变带动操作机构解锁,实现过载保护。对热双金属元件温升特性及力学特性进行仿真分析与验算,为小型断路器热双金属结构设计及双金属参数选型与调节提供借鉴。Overload trip characteristic of miniature circuit breaker is a key characteristic of circuit breaker to realize overload protection.The stability of delay trip characteristic determines the reliability of overload protection.The overload protection mainly relies on the overload heating and bending deformation of bimetal components to drive the operating mechanism to unlock to achieve overload protection.The temperature rise characteristics and mechanical characteristics of thermal bimetal elements are simulated and analyzed.The technical references for the design of thermal bimetal structure of miniature circuit breaker and the selection and adjustment of double metal parameters are provided.

关 键 词：小型断路器 过载保护 脱扣特性 热双金属 仿真 

分 类 号：TM56[电气工程—电器]