ZGD-II-1 (TY) Low Resistance Grounding Modules
Mã sản phẩm : 1490068501
The ZGD-II-1 (TY) Low Resistance Grounding Modules are a kind of grounding body based on nonmetallic materials, being composed of conductive and stable nonmetallic minerals and electrolytic materials, which can be used as the lightning protection grounding of buildings (structures), static protective grounding, AC working earthing, DC working earthing, protective earthing and grounding bodies for other purposes. The series of products won the national patents, with the patent numbers of 94230002.5 and 97107543.3
Features The built-in metallic rod of the low resistance grounding module is connected to the earth wire of protected object, discharging the current to the earth rapidly to obtain low grounding resistance. (Mechanism: The current scattering area of the grounding body itself is increased; the contact resistance between the grounding body and soil is reduced; the moisture-absorption and moisture-retention abilities are strong; the conductive function of module materials is brought into full play.) Technical Parameters
Overall dimensions: 500mm×400mm×60mm (excluding the rod)
GB/T21698-2008 Technical Specifications of Composite Grounding Device
Q/75875187-9·6-2011 Grounding Body
Installation, Usage And Maintenance
1 The low resistance grounding module can be buried vertically or horizontally, with the depth not less than 0.6m, and usually 0.8m～1.0m.
2 For a few modules buried in parallel, the distance between them should not be shorter than 4m, and can be appropriately relaxed under special circumstances.
3 When the rods of low resistance grounding modules are in parallel or connected to the earth wire, the welding must be applied. The same metal material is required to ensure reliability. Cold solder joints or solder skips are not allowed.
4 The welding slag should be removed from the welded parts, and a layer of asphalt or anticorrosive painted to prevent corrosion of rods.
Usage and Maintenance
1 The storage module should be maintained at regular times to avoid high temperature, drying, and solarization, with certain moisture.
2 During transportation and installation, the mechanical force should not damage the grounding module. The areas liable to chemical corrosion and high temperature should be kept away when choosing the burying site.
3 Sprinkle some water for compaction in layers when backfilling the soil, and measure the grounding resistance after the low resistance grounding module absorbing moisture for 72 hours.
4 The module should be buried under the permafrost in cold regions