General
The ZGD-II-1 Low Resistance Grounding Module is 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.
Standards Complied
GB/T21698-2008 Technical Specifications of Composite Grounding Device.
Q/75875187-9·6—2011 Grounding Body.
Technical Data
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Model
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ZGD-II-1
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Room temperature resistivity
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≤1.0Ω•m
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Power-frequency grounding resistancea
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6 Ω
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Power-frequency grounding resistance (equivalent expression) Rj
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≈0.16 ρ
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Weight
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(20 ±0.5) kg
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a For the soil resistivity ρ, the typical value in Chengdu, i.e., 40Ω·m, is taken.
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Configuration
Overall dimensions: 500 mm×400 mm×60 mm (excluding the rod)
1 - Rod; 2 - Low Resistance Materials; 3 - Bolt; 4 - Nut; 5 - Flat Gasket; 6 - Spring Washer
