摘要
雷电防护中的压敏电阻,在受到雷电冲击后,通流量和导通电压呈指数下降,因此,用于电源系统雷电防护的压敏电阻的使用寿命和更换周期应依据当地雷暴日的数量计算确定。
After the piezoresistance used for lightning protection is impacted by the thunderbolt, the indexes of its on-state current and on-state voltage fall down exponentially. The anthor suggests that the useful life and change cycle of the piezorosistance which is used in the power system for lightning protection should be determined by counting the amount of the local thunderstorm days.
出处
《铁路通信信号工程技术》
2007年第5期10-12,共3页
Railway Signalling & Communication Engineering
关键词
压敏电阻
防雷
寿命
Piezoresistance, lightning protection, and life
