安设避雷设备的设备，除应做好维护接零外，还有必要按规则做重复接地。
We will install lightning protection equipment equipment, should maintain the ground zero, as well as necessary according to the rules do repeat grounding.
根据国外普遍采用重复接地TN C S系统的情况，分析重复接地电阻的主要作用、取值等有关问题，供建筑供电设计参考。
According to the re-earthing TN-C-S system adopted usually by foreign country, the paper analyses main function, value etc. of re-earthing resistance. These respects can be referenced for designer.
生成的盒型图标注了各种所需的尺寸数值，设计者可以直接地修改原有盒型尺寸，无需重复制图。
The box shape pictures generated are marked with different values of dimensions required, so designers can directly modify original dimensions of boxes without necessary repeated drawing.
双通道操作：输入回路中存在冗余重复输入。急停回路中的接地故障及急停按钮相邻成对触点间的短路故障都将被检测。
Two-channel operation: Redundancy in the input circuit. Earth faults in the Emergency Stop circuit and shorts across the emergency stop push button are also detected.
双通道操作：输入回路中存在冗余重复输入。急停回路中的接地故障及急停按钮相邻成对触点间的短路故障都将被检测。
Two-channel operation: Redundancy in the input circuit. Earth faults in the Emergency Stop circuit and shorts across the emergency stop push button are also detected.
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