I. Brief Introduction
ETC-JD-01 module is a series of ground conductive non-metallic materials in order to ground-based body, which by the electrical conductivity, chemical stability of a good non-metallic materials, metal grounding, electrolyte composition and hygroscopic agents. The main scope of application:
2. Valuable precision instruments, computer room equipment, program-controlled postal and telecommunications equipment, radio and television equipment, electronic medical equipment such as grounding and protection of ground work.
3. A variety of high-rise buildings and tall structures, ancient landmarks, such as lightning protection grounding tall monument.
4. Oil pipelines and oil and gas cans, flammable and explosive material storage grounding lightning protection.
ETC-JD-01 module is a series of ground conductive non-metallic materials in order to ground-based body, which by the electrical conductivity, chemical stability of a good non-metallic materials, metal grounding, electrolyte composition and hygroscopic agents. The main scope of application:
2. Valuable precision instruments, computer room equipment, program-controlled postal and telecommunications equipment, radio and television equipment, electronic medical equipment such as grounding and protection of ground work.
3. A variety of high-rise buildings and tall structures, ancient landmarks, such as lightning protection grounding tall monument.
4. Oil pipelines and oil and gas cans, flammable and explosive material storage grounding lightning protection.
Second, the working principle
ETC-JD-01 Series Zinc Grounding grounding module built flat steel, will be protected with the ground connection, metal and earth grounding of the effective contact area will greatly increase, and HL-01 module has a strong grounding protection wet, suction temperature conductivity and stability, therefore, metal and earth grounding will significantly reduce the contact resistance and thus give full play to the grounding resistance reduced the role of modules.
Third, the performance characteristics
1. The use of chemical stability of the modules of non-metallic conductor material as the conductive media module, its electrical conductivity from the seasonal impact.
2. To moisture absorption, to maintain effective contact with the soil, low grounding resistance.
3. In high soil resistivity areas, can effectively reduce the grounding resistance and network.
4. Jinai big impact frequency and impact of current, resistance and stability.
5. Corrosion-resistant, non-toxic, long service life, and ease of installation.
Fourth, technical indicators
1. Model: ETC-JD-01 type.
2. Size: Ⅰ type Ø90 × 15cm Ⅱ-type 60 × 40 × 6cm.
3. Quality: Ⅰ type 28kg Ⅱ type 24kg.
4. Resistivity at room temperature: ≤ 3Ω m 5, power frequency grounding resistance: 8.5Ω 6, estimates of type: Rj ≈ 0.15ρ.
Fifth, the amount of calculation
ETC-JD Series grounding module projection formula:
- A single formula for calculating the grounding module:
Rj ≈ k * ρ
R: grounding resistance
ρ: soil resistivity
k: ETC-JD Series grounding coefficient calculation module, the specific values see table
- A number of parallel connected modules grounding formula:
R = Rj / Nη
N: number of modules grounding
η: the installation of the utilization factor, according to industry norms, generally 0.75-0.85.
Sixth, the construction method
1.ETC-JD-01 Ⅰ type vertical buried grounding module, HETC-JD-01 Ⅱ grounding-type level of embedded modules. Buried depth of not less than 0.8 meters.
2. Not less than the distance between modules 5 meters.
3. Module parallel each other or very core and ground connections must be welded, welding length of 2 times the width of the connection.
4. Should be to remove welding slag welding Department, painted anti-corrosion paint conductive paint or asphalt.
5. To fill watering should be moderate, layered foundation, to be full absorption module (24 hours) after the measurement of grounding resistance.
VII Notes
1. The storage module should maintain a certain humidity, to avoid high temperature, drying, exposure.
2. Transport and installation, to avoid mechanical damage module.
3. In the cold regions, the module should be buried in the permafrost below.
ETC-JD-01 Series Zinc Grounding grounding module built flat steel, will be protected with the ground connection, metal and earth grounding of the effective contact area will greatly increase, and HL-01 module has a strong grounding protection wet, suction temperature conductivity and stability, therefore, metal and earth grounding will significantly reduce the contact resistance and thus give full play to the grounding resistance reduced the role of modules.
Third, the performance characteristics
1. The use of chemical stability of the modules of non-metallic conductor material as the conductive media module, its electrical conductivity from the seasonal impact.
2. To moisture absorption, to maintain effective contact with the soil, low grounding resistance.
3. In high soil resistivity areas, can effectively reduce the grounding resistance and network.
4. Jinai big impact frequency and impact of current, resistance and stability.
5. Corrosion-resistant, non-toxic, long service life, and ease of installation.
Fourth, technical indicators
1. Model: ETC-JD-01 type.
2. Size: Ⅰ type Ø90 × 15cm Ⅱ-type 60 × 40 × 6cm.
3. Quality: Ⅰ type 28kg Ⅱ type 24kg.
4. Resistivity at room temperature: ≤ 3Ω m 5, power frequency grounding resistance: 8.5Ω 6, estimates of type: Rj ≈ 0.15ρ.
Fifth, the amount of calculation
ETC-JD Series grounding module projection formula:
- A single formula for calculating the grounding module:
Rj ≈ k * ρ
R: grounding resistance
ρ: soil resistivity
k: ETC-JD Series grounding coefficient calculation module, the specific values see table
- A number of parallel connected modules grounding formula:
R = Rj / Nη
N: number of modules grounding
η: the installation of the utilization factor, according to industry norms, generally 0.75-0.85.
Sixth, the construction method
1.ETC-JD-01 Ⅰ type vertical buried grounding module, HETC-JD-01 Ⅱ grounding-type level of embedded modules. Buried depth of not less than 0.8 meters.
2. Not less than the distance between modules 5 meters.
3. Module parallel each other or very core and ground connections must be welded, welding length of 2 times the width of the connection.
4. Should be to remove welding slag welding Department, painted anti-corrosion paint conductive paint or asphalt.
5. To fill watering should be moderate, layered foundation, to be full absorption module (24 hours) after the measurement of grounding resistance.
VII Notes
1. The storage module should maintain a certain humidity, to avoid high temperature, drying, exposure.
2. Transport and installation, to avoid mechanical damage module.
3. In the cold regions, the module should be buried in the permafrost below.
