protective earthing的例句大全

introduction was made to installation specifications and technical requirements of uninterrupted power supply ( ups), analyzing impacts of ambient temperature, space, cable laying out on ups use and the requirements for protective earthing and anti-lightning earthing.

介绍了UPS不间断电源的安装规范和技术要求，分析了环境的温度、空间、布线对UPS使用的影响及对保护接地与防雷接地的要求。

Proceeding from the electric safty protective theory of low-voltage network, the protective earthing of arc welding power sources and protective zero arc discussed. The precent standard reviews are advanced in this paper.

本文从低压电网系统中的电气安全防护理论出发，对弧焊电源的保护接地与保护接零问题进行了探讨，并提出了对现行标准的修改意见。

Protective Earthing and Protective Zeroing for Devices of CATV

有线电视基站设备的接地保护与接零保护

Implementation way of system earthing and protective earthing of transformer are suggested.

提出了作者认为变压器的保护接地、工作接地应该的做法.

It is necessary to use two stage selective earthing protective device in the power supply system of open pits.

露天矿供电系统中采用两级选择性接地保护装置十分必要。

railway applications - fixed installations - part 1 : protective provisions relating to electrical safety and earthing.

铁路设施.固定设备.第1部分：与电气安全和接地有关的防护设备

railway applications - fixed installations - protective provisions relating to electrical safety and earthing

铁路设施.固定设备.与电气安全和接地有关的防护设备