船电技术2026，Vol.46Issue(5)：1-6,6.
某型塑壳断路器热过载保护机构仿真分析
Simulation analysis of the thermal overload protection mechanism of a certain type of Molded Case Circuit Breaker
摘要
Abstract
For the actual equipment of a certain type of Molded Case Circuit Breaker,,the experimental verification of the operation value of the overloaded disconnect device was first conducted to comply with the national military standard.Subsequently,based on the the equipment specification,,actual measurements and theoretical calculation value,a finite element model of the conductive circuit was consdructed using ANSYS.After calculating the equivalent resistance and performing simulations,the temperature rise distribution and temporal variation under rated load were analyzed.By varying the input current,temperature rises under different overload conditions were investigated to determine the thermal overload verification time threshold,which was then compared with the experimental data.The thermal rise patterns of the conductive circuit under both reted and various overload current were obtained.The simulation-derived verification time setting value matched the experimental overload action value,thereby validating the model's accuracy.This provides a foundation for the simulation and verification of the similar equipment in the future.关键词
塑壳式断路器/导电回路/有限元模型/温升Key words
Molded Case Circuit Breaker/electrical circuits/the finite element model/warming up分类
信息技术与安全科学引用本文复制引用
吴言凤,孙俊忠,刘金辉..某型塑壳断路器热过载保护机构仿真分析[J].船电技术,2026,46(5):1-6,6.基金项目
51407193(青年科学基金项目) （青年科学基金项目）
