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露天采场电气设备的安全作业在很大程度上取决于设备的接地。根据统一安全规程,露天采场适宜用集中保护接地,运用某些假设条件可以把集中保护接地描绘成图1所示的链环型简化等效电路。
The safety of open pit electrical equipment depends largely on the grounding of the equipment. According to the unified safety regulations, the open pit is suitable for centralized protection of the grounding. Using some assumptions, the centralized protection grounding can be described as the simplified equivalent circuit of the chain ring shown in Fig.1.