... 接地位置 earthing position 接地系数（避雷器的） coefficient of grounding 接地系统 earthed system ...
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The coefficient of grounding is the ratio of the maximum sustained line-to-ground voltage during faults to the maximum operating line-to-line voltage.
接地系数是故障时最大持续相电压与最大运行线电压之比。
The seasonal coefficient of grounding resistance possibly reaches 3.0 in freezing region of North China, and those of touch voltage and step voltage 10 and 5.4, respectively.
在我国北方高寒冰冻地区接地系统的接地电阻季节系数可达3.0，接触电压和跨步电压季节系数可能达到10和5.4。
Adding vertical rods to grounding system will decrease the seasonal coefficient and stabilize the safety of grounding system.
采用垂直接地极能减小接地系统的季节系数，起稳定接地系统安全性能的作用。
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