Tel:13506427476    Email:13506427476@139.com

Construction of graphite grounding wire

Time:2022-08-13

1、 The low resistance grounding module can be vertically or horizontally buried, with a burial depth of not less than 0.6 meters, generally 0.8-1.0 meters;

2、 When several modules are embedded in parallel, the distance between modules should not be less than 4 meters. If conditions do not allow, it can be appropriately reduced, and at the same time, the value of the module utilization coefficient when calculating module usage should be reduced.

3、 When the poles of the low resistance grounding module are connected in parallel or to the ground wire, welding must be performed. Require welding with the same metal material to ensure the reliability of the connection. The welding length should not be less than 00 meters. No virtual soldering or solder leakage is allowed.

4、 The welding slag should be removed from the twisted joint, and a layer of asphalt or anti-corrosion paint should be applied to prevent core corrosion.

5、 Fine grained soil should be used as filling material for pit backfilling, and construction waste such as broken bricks should not be used as backfill material. Backfilling should be carried out in layers. After filling 30cm of material, add an appropriate amount of water and compact it. Fill again, add water and compact until it is level with the surface. When compacting, attention should be paid to ensuring that the module is in close contact with the backfill soil and the formation, without damaging the module itself. After backfilling, water it again to keep it moist.

6、 After sufficient moisture absorption, measure the power frequency grounding resistance with a ground resistance meter. If the expected target is not achieved, analyze the cause and take remedial measures.

7、 In cold regions, modules should be buried below the permafrost layer.