摘要
在防雷设计中,不仅要关注电涌保护器的安全性能,通常还要为其配置后备过电流保护器。介绍了低压电源系统存在的电压异常情况,在考虑电涌保护器安全性能的基础上,从相关标准要求、试验情况及工程实践经验方面分析了后备过电流保护器的选择,并给出过电流保护器选择的合理建议,可为电气设计人员提供参考。
We not only pay close attention to the safety performance of surge protective device（ SPD） in lighting protection design,but also collocate the backup overcurrent protective device. This paper introduced the existing low voltage differences in low voltage power supply system. Based on considering the safety performance of SPD,the selections of backup overcurrent protective device were analyzed in aspects of relevant standard stipulations,testing situations and engineering practical experiences. The reasonable selection suggestions of backup overcurrent protective device are provided. It could provide references for electrical designers.
出处
《现代建筑电气》
2016年第6期51-54,69,共5页
Modern Architecture Electric
基金
杭州市气象局科技计划项目(QX201133)
关键词
低压电源
电涌保护器
过电流保护器
小型断路器
失效模式
low voltage power supply
surge protective device（SPD）
overcurrent protection device
miniature circuit breaker（MCB）
failure mode
safety performance
