摘要
提出一个与目前习惯做法不同的接地方案,其理论根据是国家、地方和行业标准,实践根据是现场实验、测试结果。明确提出利用地下结构钢筋作为自然接地体,它的接地电阻在0.5Ω以下,完全符合电气设备接地要求;地下结构钢筋是一个等电位法拉第笼,是地铁这个电磁环境中一切设备的地。
A new grounding plan is put forward according to national and local standards and those of the industry concerned. This plan is also based on field experiments and test results. It is proposed that structural reinforcing bars underground can be used as natural grounding body whose electric resistance is less than 0.5 Ω, which completely meets the requirements for grounding of electrical equipment. The structural reinforcing bars underground is equipotential faraday cage and also a ground for all metro equipment under this electromagnetic environment.
出处
《都市快轨交通》
2006年第3期43-45,共3页
Urban Rapid Rail Transit
关键词
自然接地体
等电位
法拉第笼
接地电流
崩溃电压
natural grounding body
equipotential
faraday cage
grounding current
breakdown voltage
