It can be divided into three-phase single-screen common and six-phase double-screen common grounding box and single-phase grounding box (the function of single-phase grounding box can only be used for direct grounding box and protective grounding box); Suitable for grounding system with 35kV-220kV cables.

According to the installation form:

      It can be divided into three types: upright, buried and wall-mounted.

According to the function of grounding:

      It can be divided into three types: direct grounding, protective grounding and cross-interconnect grounding.