快速熔断器在励磁系统整流装置中的应用

Application of Fast Fuse in Rectification Device of Excitation System

大功率整流装置是励磁系统最重要组成部分,快速熔断器是励磁整流装置的主要保护元件,大功率整流(高电压和大电流)的趋势对整流器的安全保护提出了更高的要求。基于对快速熔断器的额定电压、额定电流参数选择及快速熔断器的分断能力、I^(2)t、冷却等内容进行的分析,给出了合理选择快速熔断器的依据与实例。

High power rectification device is the most important part of excitation system,and fast fuse is the main protection element of the excitation rectification device.The trend of high power rectifying with high voltage and high current raises higher requirements for the safety protection of rectification devices.The selection of the rated voltage and current parameters of the fast fuse,and its breaking capacity,fusing I^(2)t and cooling are analyzed.Then,the basis for the reasonable selection of the fast fuse and practical examples are given.