Product Introduction
The main component of the absorptive grounding electrode is conductive non-metallic material. Internally, it contains a cable-like graphene lightning protection grounding body. The overall shape is cylindrical, unaffected by water, soil, acidity, alkali, or galvanic corrosion. Its main component is high-carbon graphene, which has stable chemical properties. It is connected to the graphene lightning protection grounding body using a special 316 stainless steel connecting clamp (lap clamp).
Absorptive grounding electrode specifications: ≤100*1000mm. Measured values must not be less than nominal values.
The resistance change rate of the absorptive grounding electrode after a 100kA impulse current withstand test is ≤5%. The resistance change rate of the absorptive grounding electrode after a 30A power frequency current withstand test is ≤5%.
The solid-state resistivity of the absorptive grounding electrode is ≤4×10-5 ≤ 183 µm.
Weight per unit length of the absorptive grounding electrode: 10～11 kg.
Main Standards Followed
The following latest valid standard versions shall be followed, but are not limited to:
GB/T21698-2008 "Technical Conditions for Composite Grounding Electrodes" GB2900.1 "Electrical Engineering Terminology"
GB/T17949 "Guidelines for Measurement of Soil Resistivity, Grounding Impedance and Ground Potential of Grounding Systems"
GB/T16927.1 "High Voltage Testing Technology Part 1: General Test Requirements" GB/T16927.2 "High Voltage Testing Technology Part 2: Measurement Systems"
GB/T50065 "Code for Grounding Design of AC Electrical Installations"
Installation Diagram
Connection Diagram
(Note: Each set of equipment is equipped with one wire lug, a 15-meter graphene grounding electrode, two grounding electrodes, and two sets of connecting clamps. Among them: 1. The wire lug is made of 316 stainless steel; 2. The armored protection includes a 2-meter braided 316 stainless steel protective layer and an outer insulating sheath to enhance its resistance to external damage; 3. The clamps are made of 316 stainless steel to enhance corrosion resistance.)
Technical Parameters
| Test Items | Acceptance Items (Type Test) |
Sampling Inspection Items | Technical Requirements |
| Error between measured and nominal diameter | √ | √ | Error ≤5% |
| Resistivity of Grounding Electrode | √ | √ | ≤3×10⁻⁶ Q ⁻¹ m |
| Connection Resistance | √ | ≤4m ⁻¹ | |
| Grounding Electrode Impulse Current Withstand Test | √ | width="138" >100kA, ≤5% | |
| Grounding electrode power frequency current withstand test | √ | 30A, ≤5% | |
| Corrosion test | √ | ≤10% | |
| Bending, tensile, and torsional strength test | √ | √ | △R%≤10% |
| Flame retardant performance | √ | FV-0 grade |
Note: (1)△R% is the resistance change rate (test value relative to the resistance value indicated on the product nameplate).
