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接地体的分与合 众所周知,在现代建筑中同时并存着各种接地系统。可分为两部分:强电接地系统和弱电(电子设备)接地系统。 1.强电接地系统 1)供电系统的重复接地,接地电阻不应大于10Ω。 2)建筑物的防雷接地共分三级,一级防雷的冲击接地电阻不应大于10Ω。 2.弱电(电子设备)接地系统 1)计算机系统接地有三种: 交流工作接地,接地电阻不应大于10Ω;
Earthing points and well As we all know, in modern buildings coexist with a variety of grounding system. Can be divided into two parts: strong grounding system and weak (electronic equipment) grounding system. 1. Power grounding system 1) Repeated grounding of power supply system, grounding resistance should not exceed 10Ω. 2) lightning protection grounding buildings are divided into three levels, a lightning protection grounding resistance should not exceed 10Ω. 2. Weak electricity (electronic equipment) grounding system 1) There are three types of computer system grounding: AC work grounding, grounding resistance should not exceed 10Ω;