1, 10KV high-voltage grounding wire Insulated pole part length: 700 mm Grip part length: 300 mm Metal joint part length: 50 mm Number of sections: 1 Diameter of the rod: 30mm Total length (excluding clamps): 1050 mm.
2, 35KV grounding wire Nominal cross-section: 25mm2 Total number of rods: 810 Average diameter (mm): 0.2mm. Calculated cross-section: (mm2): 25.43 Length of metal joint part: 50 mm Number of sections: 1 Rod diameter: 30 mm.
3. 110KV high-voltage grounding wire Nominal cross-section: 35mm2 Total number of roots: 1136 Mean diameter (mm): 0.2mm Calculated cross-section: (mm2): 35.67 Length of insulating rod part: 1360 mm Length of gripping part: 700 mm Length of metal connector part: 140 mm Number of sections: 2 Diameter of pole: 30 mm Total length (excluding wire clamp): 2200 mm.
Expanded information:
2, safety grounding:
Electricity regulations provide for protective grounding resistance should be ≤ 4 Ω, while the human body's resistance is generally greater than 2000 Ω, according to Ohm's law, insulation damage through the human body's current is only 1/500 of the total current, which in turn plays a protective role.
Household appliances and office equipment are equipped with metal casing grounding wire, such as its insulation damage shell charged, then the current along the installation of the grounding wire into the earth, in order to achieve the purpose of security, otherwise it will cause harm to personal safety.
Lightning strike grounding to prevent in the thunderstorm season, tall buildings, various types of communication systems, as well as a variety of antennae erected on the building and some other facilities were struck by lightning, need to install lightning rods, and then lead it to the installation of the lightning strike grounding system with a wire.
In addition, there are electromagnetic radiation grounding. In some important departments to prevent electromagnetic interference, electronic equipment installed shielding network, the installation of the shielding network to be connected to the corresponding grounding system, and requires grounding resistance ≤ 4Ω.
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