电气传动2025，Vol.55Issue(3)：91-96,6.DOI:10.19457/j.1001-2095.dqcd26072
断路器瞬时脱扣装置脱扣电流的设计研究
Design and Research of Instantaneous Tripping Device for Circuit Breakers
摘要
Abstract
Thermal and magnetic protection circuit breakers provided short circuit protection by instantaneous tripping devices.In the magnetic field formed by the coil with current,the moving armature and stationary core overcomed the spring force and engage under the influence of electromagnetic force,thereby pushing the circuit breaker mechanism to operate and causing the product tripping.During the entire process,only when the electromagnetic force reaches a certain value could be the moving armature and stationary core reliably engage at the preset current value.In actual engineering design,in order to simplify the design and calculation process,issues such as magnetic leakage may be ignored.Therefore,the theoretical calculated magnetic attraction force,i.e.spring reaction force,will be smaller than the preset target.By analogy calculation method,it is possible to directly eliminate the influence of magnetic leakage and part manufacturing accuracy on the test results during the manufacturing process,and complete the design of the instantaneous release device once.Finally,practical application cases were used to illustrate how to accurately and quickly design an instantaneous release devices through a combination of theoretical calculations and experiments.关键词
断路器/瞬时脱扣装置/脱扣电流/脱扣电流的检测/类比计算Key words
circuit breaker/instantaneous tripping device/tripping current/detection of instantaneous tripping current/analogous calculation分类
信息技术与安全科学引用本文复制引用
耿丽恺,侯娟,张春香,胡文英,李文华,李翠娟..断路器瞬时脱扣装置脱扣电流的设计研究[J].电气传动,2025,55(3):91-96,6.基金项目
天津电气科学研究院有限公司自立科研项目(JC2023ZL005) （JC2023ZL005）
