1、 Product Introduction:

The SHIELD series ion grounding electrodes produced by our company come in "straight" and "L-shaped" types, which can be selected according to soil resistance reduction requirements and on-site construction conditions. This high-end new product adopts the most advanced foreign process formula, and uses 99.9% pure copper, 304 stainless steel, hot-dip galvanized pipe, zinc alloy and other carriers as carriers. It is filled with various materials such as hydrophilic ion releasing agents, resistance reducing electrolytes, high-energy anti-corrosion graphite powder, etc. inside the electrode tube, and has undergone special anti-corrosion treatment, with strong ion release performance. It is the latest generation of active grounding materials, and its grounding effect is several times that of traditional grounding materials. Since its launch, the SHIELD series ion grounding electrode has been widely used in large-scale systems such as power, communication, and national defense, achieving good social benefits and unanimous approval from customers.

2、 Product advantages:

▲ Pure copper carrier, strong oxidation resistance, with a service life of over 30 years

▲ The inner filler is a hydrophilic ion relieving agent with water absorption and retention properties, ensuring its use in harsh and arid environments

The ion exchange hole adopts a design with large and small holes at the bottom, effectively increasing the effect of ion exchange

▲ Adopting two methods of mechanical riveting and hot melt welding, which can meet different needs according to the usage environment

The ion initiator for external distribution can quickly interact with the built-in hydrophilic ion release agent, thereby rapidly reducing the grounding resistance.

4、 Function and principle:

The SHIELD series ion grounding electrode is divided into two parts: one is that the carrier is made of pure copper, with a diameter of 55mm or 60mm, and the material is generally copper or steel, which is in direct contact with the soil. This part is equivalent to a regular pure copper grounding electrode; The other part of the grounding effect mainly comes from the hydrophilic ion release agent inside the carrier. Under the action of the external initiator, a large number of negative ions are continuously released outside the carrier through the exchange holes of the carrier. These ions are conductive media that directly conduct lightning currents; At the same time, the surrounding soil will undergo electrochemical reactions under the long-term action of these negative ions, thereby forming a large conductor. It is equivalent to increasing the grounding area of the grounding body, so we call this ion grounding body an "active resistance reducing grounding material".

Compared with ordinary ion grounding electrodes from other manufacturers, we use a cyclic ion structure system with built-in hydrophilic ion release agents, which are also adsorbents. When the internal ion amount is less than a certain amount, they will adsorb some free ions such as Na+, Mg+, Ca+in the surrounding soil, ensuring long-term exchange and avoiding the disadvantage of other ion grounding electrodes needing to be filled with ion release agents every once in a while (about six months). The unique formula of SHIELD series ion grounding fundamentally solves this problem.

5、 Design Guidelines

When making rough estimates, the following table can be used to select the number of special resistant grounding electrodes:

Table 2: Design Guidelines for Installing SHIELD Series Ionic Grounding Electrodes

The preparation conditions for this table are:

1. SHIELD high-energy anti-corrosion ion grounding electrode adopts HT-V-3, vertically buried;

2. The spacing between SHIELD high-energy anti-corrosion ion grounding electrodes should be greater than 3 times the length of the grounding electrode;

3. Consider the impact of horizontal connecting conductors.

6、 Usage calculation:

There are many factors that affect grounding resistance, and the design, calculation, and construction layout of grounding engineering should be based on the investigation of on-site geological, hydrological, and meteorological data, as well as the measurement of soil resistivity. Our company has summarized the calculation formula for SHIELD high-energy anti-corrosion ion grounding electrode based on a large amount of practical application experience and combined with theory, for design reference.

1. SHIELD high-energy anti-corrosion ion grounding electrode, single vertical grounding electrode

Rc= Ln  ----------(1)

(1) In the formula: Rc: SHIELD high-energy anti-corrosion ion grounding electrode grounding resistance (Ω)

ρ: Soil resistivity (Ω· m)

L: Grounding electrode length (m)

D: The equivalent vertical grounding body diameter after adding ion inducer is 0.25-0.35m, usually 0.3m

K: Drag reduction coefficient

When ρ≤ 50 Ω· m K, take 5

50 ≤ ρ＜ 100 Ω· m K takes 10

100 ≤ ρ＜ 500 Ω· m K takes 15

500 ≤ ρ＜ 1000 Ω· m K takes 20

ρ≥ 1000 Ω· m K takes 25

2. SHIELD high-energy anti-corrosion ion grounding electrode with multiple vertical grounding electrodes

Rn=  ----------(2)

(2) In the formula: Rc: Grounding resistance of a single SHIELD high-energy anti-corrosion ion grounding electrode (Ω)

n: SHIELD high-energy anti-corrosion ion grounding electrode vertical grounding electrode quantity (root)

: Utilization coefficient (selected according to the listed table)

Rn: Grounding resistance of n vertical SHIELD high-energy anti-corrosion ion grounding electrodes (Ω)

3. Utilization coefficient η