The connection of the conductors of the substation ground network is required to be stable and reliable, especially of the copper ground network.
变电站接地网导体的连接要求稳定可靠，在铜接地网中显得尤为重要。
The mechanical principle and the manufacture of the steel barrel type barer, and its operation in the substation ground network construction have been introduced.
介绍了钢管式钻具的制作、构造原理，以及在变电所接地网敷设中的应用情况。
Therefor, the soil resistivity of the substation is investigated; the features and the techno economical indexes of conducting concrete are analyzed, thus setting the scheme of the ground net.
为此，对变电站所在地的土壤进行了电阻率调查，分析了导电混凝土的特性及其技术经济指标，最终确定了地网方案。
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