What are the requirements for the installation and connection of grounding modules?

1. When installing a grounding module, in order to reduce the ground grid contact potential difference, the potential on the ground surface should be carefully adjusted. On the site of the outdoor power distribution device, the soil resistivity of the surface layer is artificially increased and a pavement structural layer with high resistivity is used. The purpose of laying rubber carpets on indoor electrical equipment is to reduce the current passing through the human body.

2. The connection of the grounding module should be reliable. Except for the disconnection points specified in the design, which can be connected by bolts, the rest should be connected by welding or explosion pressure. Rust and other attachments from the connection parts should be removed before connection. The connection of the grounding module includes the extension connection of the grounding module, the connection between the grounding down lead and the horizontal grounding grid, and the connection between the horizontal grounding grid and the vertical ground electrode. During the connection operation, the overlap length must be determined according to different connections.

3. When lap welding is used, the lap length of the round steel should be 6 times its diameter, and should be welded on both sides. The overlap length of flat steel is twice its width and should be welded on all sides. When welding flat steel to steel pipes or flat steel to angle steel, in addition to welding on both sides of the contact parts, the steel strip should be bent into an arc or right angle and then welded to the steel pipe or angle steel.