热双金属片在小型断路器应用上的优化设计  

Optimized Design of Thermal Bimetals for Applications of Small Circuit Breaker

作　　者：李金华 陈天来 卢小东 LI Jinhua;CHEN Tianlai;LU Xiaodong(Foshan Tongbao Electrical Precision Alloy Co.,Ltd.,Foshan 528000,China)

机构地区：[1]佛山通宝精密合金股份有限公司,广东佛山528000

出　　处：《电工材料》2024年第5期1-3,6,共4页Electrical Engineering Materials

摘　　要：断路器作为开关仪表,广泛用于低压配电输电线路或电气设备。跳闸热特性是小型断路器的重要指标。大多数小型断路器使用热双金属元件来热切断断路器,该元件充当驱动机构,以便在电流过载时断开,从而充当过载保护。通过对小型断路器中热双金属热分布的模拟和分析,可以预先判断断路器热跳闸的稳定性,因此研究热双金属热分布具有重要的实际应用价值和发展前景。本研究结合热双金属的特性,特别是热敏特性,开展断路器应用上的试验仿真进行相应的理论研究,以供参考。Circuit breakers,as switch instruments,are widely used in low-voltage distribution transmission lines or electrical equipment.The thermal characteristics of tripping are important indicators of small circuit breakers.Most small circuit breakers use bimetallic components to thermally cut off the circuit breaker,which act as a driving mechanism to open the circuit breaker in the event of current overload,thereby serving as overload protection.By simulating and analyzing the bimetallic heat distribution in small circuit breakers,the stability of circuit breaker thermal tripping can be pre-determined.Therefore,studying the bimetallic heat distribution analysis has important practical application value and development prospects.This article conducts theoretical research on the experimental simulation of the thermal bending characteristics of bimetallic sheets in small circuit breakers for reference.

关 键 词：小型断路器 双金属片 热弯曲特性 

分 类 号：TM56[电气工程—电器]