RU2733882C1 - Prefabricated grounding and lightning protection system and method of its installation - Google Patents

Abstract

FIELD: instrument engineering.

SUBSTANCE: invention relates to an earthing arrangement. Arrangement includes a vertical prefabricated grounding electrode consisting of at least two grounding rods, at least one coupling and a tip, a hot-dip galvanized steel strip with a width of up to 0.05 meters or a circular conductor with a diameter of 0.01 to 0.016 meters, the connection of which to the prefabricated grounding electrode is carried out by means of clamps with a width of 0.09 meters and a height of 0.09 meters. Way to install a prefabricated grounding system is as follows: before the vertical immersion of the first grounding rod of the prefabricated grounding electrode onto the rod, the receiving head and the mounting sleeve are screwed from above up to the stop, and the tip is screwed from the bottom up to the stop. Electrically conductive lubrication is applied to the electrically conductive thread, then the immersion is strictly vertical. After immersion, the mounting sleeve and the receiving head are unscrewed and disconnected from the grounding rod, then the connection of the next grounding rod is made through the coupling to the first rod. Operations are repeated until the required electrical resistance value of the grounding rod and the length of the grounding rod are obtained, after which the gaps are sealed.

EFFECT: technical result is the reduction in the electrical resistance of the rod-clamp-conductor connection, as well as the elimination of the destruction of the prefabricated grounding electrode when it is installed, reduction and stabilization of the resistance of the grounding arrangement.

7 cl, 9 dwg, 2 tbl

Description

The invention relates to the field of electrical engineering, in particular to a grounding device and an improved method for installing this device. The invention also describes an improved design of a vertical grounding electrode assembly and methods for its assembly, connections to horizontal grounding conductors, and installation.

State of the art.

Grounding electrodes and their use in grounding systems are known from the prior art.

RU 148646 (priority 01.11.2013) electrolytic grounding electrodes are known, which consist of pipes perforated in the lower part, made of stainless materials, into which an electrolytic solution based on sodium chloride is poured.

The technical results provided by the given set of features in the known patent are the reduction in the cost of the ground electrode; reduced installation costs, no maintenance costs.

The known device works as follows. After installing the vertical electrodes in the ground, the multicomponent mixture "AVGactiv" in the liquid phase is poured into the grounding pipe, which penetrates into the ground through the perforated holes of the grounding pipes.

As a result of the spreading of the multicomponent mixture "AVGactiv" on the ground, full contact of the outer and inner surfaces of the grounding system with the soil is created, the voids formed from vibration during penetration by a perforator are filled, multiplying the conductive surface due to propagation through cracks and voids in the soil, additionally creating a bulk surface. As a result, the contact area of the ground electrode with the ground increases, thereby reducing its spreading resistance.

After the mixture has hardened, it retains its conductive properties unchanged over time. The use of active ground electrodes is assumed at facilities (power plants, substations, power transmission towers, industrial facilities) located in areas with high soil resistivity, where it is difficult to achieve the value of the spreading resistance of the grounding device, regulated by the normative and technical documentation, using conventional ground electrodes. and the use of electrolytic grounding electrodes is costly.

From RU 2396373 (priority 12.05.2009) an anode earthing switch and a method of its installation are known. The invention relates to the field of electrochemical protection of underground structures from corrosion and can be used in the construction of anode and working DC grounding. The anode earthing switch differs in that the electrode located in the lower part is equipped with additional current leads with an additional conductive wire, the electrode connections are hermetically enclosed by an elastic sleeve made of a dielectric material. The upper and lower electrodes are equipped, respectively, from the top and bottom with elastic caps made of dielectric material with holes for the main and additional current-conducting wires, the lower electrode is equipped with a process nozzle equipped with a guide for the lowering device of the lifting mechanism. The invention also relates to a method for installing an anode earthing switch, including the assembly of electrodes from bottom to top one above the other to an electrode with a conductive wire, lowering into a vertical well (pit) using a lifting device (rope, cable, cable) of a lifting mechanism, followed by filling the pit with an anode earthing switch in the central part with an electrically conductive substrate, and on top - with a large-porous bulk material. The invention makes it possible to simply assemble and place from the surface in the pit during the installation of the anode ground electrode, minimizing the possibility of clogging of the contacts of the electrodes and provides control over the state of the anode ground electrode.

From RU patent No. 2153537 (priority 07/27/2000) a method is known for performing deep anode grounding, which includes drilling a well, placing a metal conductor in the well and filling the well from the bottom to the wellhead with a conductive non-metallic material. An electrically conductive cement slurry is used as a conductive non-metallic material. The mortar is placed in the well using the vertically moving pipe method, and the metal conductor is placed in the non-seized electrically conductive cement slurry in the upper part of the well. The method has a low cost.

From patent RU 2394942 (priority 20.10.2009) there is known a method of making an anode ground electrode system. The method includes placing electrodes in the well and filling the well from the bottomhole to the wellhead with a conductive nonmetallic material, while a platform and an assembly wellhead conductor of the electrical "carpet" type are mounted on the well, the electrodes are made of ferrosilide, the column of electrodes made of ferrosilide is supplemented with current lead electrodes and a dielectric spacer between with a column of electrodes and a platform, the column of electrodes is suspended in the borehole on a cable made of a dielectric material and a gas outlet polymeric perforated tube is installed.

The technical result is to increase the reliability of the earthing device mounting structure, improve the technical characteristics and change the mounting method, simplify the earthing switch installation and increase the duration of its operation.

It is also known from the prior art that the method of installing vertical ground electrodes depends on their design, characteristics of the soil and its condition during installation, climatic conditions, and installation depth.

There are two main ways of connecting parts of vertical earthing switches: with a trunnion and threaded without the use of conductive grease.

In this case, the resistance to spreading of the clogged electrode is minimal; the resistance of the screw-mounted electrode is 20-30% higher; the resistance of the electrode laid in the finished well and covered with loose soil may turn out to be even higher than the normalized one, which will not allow putting the electrical installation into operation.

However, none of the known devices achieves a reduction in the transient electrical resistance of the threaded connection of a vertical ground electrode installed by driving it into the ground, it is also not known in the known methods of their installation, as well as the installation method that ensures tight ground contact with the grounding device immediately after installation.

Technical result.

As you know, the stability of the resistance of a deep grounding device depends on the depth of installation and the stability of low transient resistances of contact joints, the climatic zone of operation and the time of year (the lower the temperature fluctuations, the more stable), the chemical and geological composition of the soil, the density of the surrounding soil to the structure and the material of the ground electrode influencing the degree of corrosion and conductivity, to it and other factors.

The objectives of the claimed invention are to exclude the destruction and deformation of the structure of the ground electrode when it is driven into the ground, to improve the method of installing the ground electrode to eliminate all the undesirable consequences indicated above, as well as to reduce the transient electrical resistances of the threaded connections of the components of the ground electrode tip-rod, rod-sleeve-rod , in a vertical ground electrode and rod-clamp-conductor (conductor-clamp-conductor) when connecting grounding conductors to it or when connecting them together, increasing the density of the surrounding soil to the ground electrode and, accordingly, reducing and stabilizing the resistance of the installed grounding device.

The technical result is a decrease in the transient electrical resistance of the above connections (tip-rod, rod-coupling-rod, in a vertical ground electrode and rod-clamp-conductor (conductor-clamp-conductor) when connecting grounding conductors to it or when connecting them together) for due to the area of increasing the electrical contact, increasing the service life of the grounding device, as well as eliminating the destruction of the grounding prefabricated electrode during its installation and reducing and stabilizing the resistance of the grounding device due to the use of special sealing electrically conductive solutions.

Reducing the transient electrical resistance of the rod-clamp-conductor connection also made it possible to protect the threaded connections in the precast grounding electrode from soil corrosion.

The technical result is achieved:

1. Changing the shape of the threaded part of the grounding rod to cylindrical (instead of the generally accepted conical one) and increased the transmission area of the load transmitted from the electric jackhammer, which excluded cases of destruction of the connecting sleeve when installing the vertical grounding electrode.

2. When assembling the prefabricated grounding electrode, the use of electrically conductive lubricant was introduced, which made it possible to reduce the transient electrical resistance of threaded connections rod-coupling-rod due to the area of increased electrical contact, reduce backlash of threaded connections, and also additionally protect threaded connections from soil corrosion.

3. The design of the vertical part of the grounding device of the earthing rod prefabricated electrode introduced the use of a mounting sleeve made of high-strength steel (as an element of the equipment for installation) when the electrode is immersed in the ground (instead of the connecting sleeve), which made it possible to exclude cases of destruction of the generally accepted connecting sleeve during its installation.

4. The method of installation of the grounding device in the electrode of the grounding rod assembly has been changed. The installation technology introduced the use of electrically conductive graphite grease to reduce the transient electrical resistance of threaded contact joints and the connection points of the electrode to the grounding conductor by increasing the electrical contact area and additionally protect the contact joints from soil corrosion with butyl rubber tape.

5. The design of the clamp for connecting the grounding rod included in the electrode of the grounding rod assembly (upper grounding rod) with the horizontal conductor (strip) has been changed, namely: the size has been increased instead of the generally accepted 70 × 70 mm (0.07 × 0.07 m) to 90 × 90 mm (0.09 × 0.09 m), which made it possible to use it for connection with a steel strip 40 × (4-5) mm and 50 × (4-5) mm, and made it possible to use a strip of this size in grounding devices in accordance with Russian standards, increases the service life of the grounding device (due to the longer corrosion time due to its large dimensions) and increases the current carrying capacity of the grounding device.

6. The method of mounting the electrode of the grounding rod assembly has been changed. In the installation technique, an electrically conductive composition has been introduced, which, due to self-expansion when mixed with water and the properties of its components with high electrical conductivity, ensures a tight adhesion of the soil to the ground electrode for 24 hours and allows obtaining a low stable resistance to current spreading.

All this made it possible to improve the quality indicators of the grounding device and extend its service life: the use of electrically conductive grease, electrically conductive composition made it possible to protect all contact connections of the grounding device from soil and electrochemical corrosion and significantly reduce their electrical transition resistance, reduce and stabilize the resistance of the grounding device, by increasing the cross-section of the grounding conductor to increase its current carrying capacity, the use of a sealant tape to protect the contact connections from soil corrosion.

In general, the claimed invention consists of a group of inventions, a grounding device and a method for its installation, including a prefabricated grounding electrode included in the grounding device, in which the threaded parts of the grounding rod have a cylindrical shape.

The grounding device includes a vertically located prefabricated grounding electrode (made of stainless, hot-galvanized or copper-plated steel), consisting of at least two ground rods, at least one connecting sleeve, and a tip (2 types), steel (hot-dip galvanized, stainless or copper-plated) strip up to 0.05 meters wide, or a conductor with a circular cross-section with a diameter of 0.01 to 0.016 meters, the connection of which to the earthing electrode is carried out using clamps 0.09 meters wide and 0.09 meters high. The maximum number of rods used is 20 pcs., Couplings - 19 pcs., Tips - 1 pc. 1 vertical clamp.

The method of installing the grounding device consists in the fact that before the vertical immersion of the first grounding rod of the grounding assembly electrode on the rod from above until it stops, the receiving head is screwed into the mounting sleeve, and from below, the tip is screwed in until it stops (of the 1st or 2nd type. Type 1, the tip is used when immersing the vertical grounding electrode to a depth of 30 meters, type 2 - to a depth of 12 meters).

Moreover, electrically conductive lubricant is applied to all threaded connections, then the assembled structure is immersed strictly vertically using a jackhammer and a special nozzle.

The type 1 tip has an internal thread and is screwed onto the grounding rod, the type 2 tip has an external thread and is connected to the grounding rod through a coupling.

After immersion, the mounting sleeve and the receiving head are unscrewed and disconnected from the grounding rod, then the next grounding rod is connected to the first rod through the connecting sleeve, and the mounting sleeve and the receiving head are screwed to the upper end of the next grounding rod until it stops, with preliminary application of electrically conductive lubricant to the threaded connections and the assembled structure is immersed strictly vertically. After immersion, repeat the operation of unscrewing the mounting sleeve and receiving head. These operations are repeated until the required value of the electrical resistance of the grounding rod and the length of the grounding rod is reached. After that, the gaps formed in the soil when the electrode of the grounding rod is immersed with an electrically conductive sealing compound consisting of a mixture containing fine bentonite clay powder, with a swelling coefficient of at least 9, the material of the carbon fraction is up to 5 mm and mineral salt, and the electrically conductive composition is diluted water, in a ratio of 1 part to 5 parts of water. Then, the upper part of the grounding precast electrode, located above the ground surface, is connected to the grounding conductor (a steel strip made of stainless, hot-dip galvanized or copper-plated steel or a circular conductor with a diameter of 0.01 to 0.016 meters, using a universal clamp.

Electrically conductive grease For the contact connections of copper-plated, galvanized or stainless steel ground rods and the grounding conductor (steel strip or round conductor), graphite conductive grease is used.

It is allowed to use copper-graphite conductive grease for copper-plated steel ground rods, use zinc-graphite conductive grease for galvanized steel ground rods, and nickel-graphite conductive grease for stainless steel.

Butyl rubber tape for waterproofing the above compounds is used with a size of 50 × 3 mm or other size.

A prefabricated grounding electrode in which the threaded parts of the grounding rods have a cylindrical shape.

The claimed group of inventions is discussed in more detail below.

The essence of the claimed invention.

The grounding device includes a vertically arranged earthing electrode assembly, consisting of at least two ground rods (the number of rods depends on the length of the electrode), a tip and at least one coupling, the number of couplings depends on the required length of the ground electrode. The length of the earthing electrode assembly can vary from 3 meters to 30 meters.

Also, the grounding device includes a grounding conductor, which is a steel strip or a conductor with a circular cross-section), connected to the vertical grounding electrode assembly using clamps.

The shape of the threaded part of the earthing rod is cylindrical, which makes it possible to exclude cases of destruction of the coupling when mounted in a vertical plane.

To reduce the transient electrical resistances of threaded connections, the grounding rod - the connecting sleeve - the rod of the electrode of the grounding assembly and due to the area of increasing the electrical contact, electrically conductive grease is used.

To install the grounding electrode in the ground, a receiving head and a mounting sleeve are additionally used, which ensures the connection of the receiving head to the grounding rod and the transfer of loads for immersion from a jackhammer through an impact nozzle.

Before installing the vertical electrode of the grounding electrode, mark the place of installation of the ground electrode and dig a trench or pit 700 mm deep and 500-700 mm wide.

Before immersing the first grounding rod onto the rod from above, screw the receiving head, the mounting sleeve, into it, the receiving head until it stops, and screw the tip into it from below until it stops.

Moreover, electrically conductive grease is applied to the electrically conductive thread of the earthing rod from the side of connection to the mounting sleeve and from the side of connection to the tip. Also, grease is applied to the thread of the coupling of the mounting and receiving head.

Use graphite conductive grease for all types of electrodes and grounding conductor connections, or copper-graphite for copper-plated electrodes, zinc-graphite for hot-dip galvanized steel electrodes, nickel-graphite for stainless steel electrodes (depending on the type of grounding rod material).

The immersion of the assembled structure containing the receiving head, the mounting sleeve, the grounding rod and the tip is carried out strictly vertically using an electric jackhammer (with an impact energy of at least 25 J) with an installed impact nozzle with the transmission of the impact through the receiving head. Assembly and submersion of the structure is illustrated in figure 1.

The receiving head through the mounting sleeve must be screwed all the way into the grounding rod, otherwise the impact energy will not be transmitted directly to the grounding rod, but through the thread of the mounting sleeve, which can lead to its damage.

The immersion of each grounding rod in the composition of the vertical assembly grounding electrode is carried out in such a way that the distance from the ground surface to the end of the rod located above the ground surface is no more than 200 mm.

After immersion, the mounting sleeve and the receiving head are unscrewed and disconnected from the grounding rod.

The connection of the next earthing rod to the first rod, which is vertically in the ground, is carried out through a connecting sleeve, while preliminarily, as in the previous case, electrically conductive grease is applied to all threaded connections. The mounting sleeve and the receiving head are screwed in to the upper end of the grounding rod until it stops. Assembly and submersion of the structure is illustrated in Figure 2.

The immersion of the assembled structure is also carried out through the receiving head using an electric jackhammer (with an impact energy of at least 25 J).

The grounding rod is immersed until the distance between the end of the rod located on the surface and the soil surface itself is no more than 200 mm.

After immersion, the operation of unscrewing the mounting sleeve and the receiving head from the upper end of the ground rod is repeated.

These operations are repeated until the required design value of the resistance of the vertical ground electrode is reached and the installation depth set by the project is reached.

After that, the gaps formed between the borehole walls in the ground and the grounding rod are filled during immersion. The gap filling is illustrated in Figure 3.

For these purposes, use the electrically conductive composition, diluted with water, in a ratio of 1 part of the electrically conductive composition to 5 parts of water.

The electrically conductive composition for sealing gaps in dry form consists of a mixture including fine bentonite clay powder, with a swelling (expansion) coefficient of at least 7-9, carbon material (fractions up to 5 mm) and mineral salt.

Approximate consumption of a mixture of electrically conductive composition from the size of the formed gaps:

Vertical ground electrode up to 6.0 meters - 0.5 kg

Vertical earthing switch from 7.5 meters to 10.5 meters - 0.9 kg

Vertical earthing switch from 12 meters to 18 meters - 1.4 kg

Vertical earthing switch from 19.5 meters to 24 meters - 1.9 kg

Vertical earthing switch from 25.5 meters to 30 meters - 2.4 kg

Then, the upper part of the grounding precast electrode, located above the ground surface, is connected to a steel strip 40 × 4 mm, 40 × 6 mm (0.04 × 0.004 m and 0.04 × 0.006 m) or a circular conductor with a diameter of 10 mm to 25 mm (0.001 m to 0.0016 mm) (ground bus) with universal clamp. The connection of a ground electrode assembly to a hot dip galvanized steel strip is illustrated in Figure 4.

For grounding rods made of hot-dip galvanized steel, use the clamp ZU-2GTs, for grounding rods made of stainless steel, use the clamp ZU-2GN, for copper-bonded grounding rods use the clamp ZU-2L, or other clamps produced by our company.

Moreover, the design of the clamps can be different.

Figure 5 clearly shows a clamp for connecting flat conductors in the form of a strip and round conductors of the 1st type.

Figure 6 clearly shows a clamp for connecting flat conductors in the form of a strip and conductors of circular cross-section type 2.

Figure 7 clearly shows a clamp for connecting flat conductors in the form of a strip and conductors of circular cross-section type 3.

The clamp for connecting the electrode of the grounding rod assembly with the hot-dip galvanized steel strip has a size of 0.09 × 0.09 m (90 × 90 mm), which makes it possible to use it to connect to a steel strip 0.04 m wide and 0.004: 0.005 m thick (40 × (4-5) mm) or 0.05 m wide and 0.004 thick: 0.005 m 50 × (4-5) mm.

An anti-corrosion conductive grease is applied before joining. For additional protection, the joint is sealed using a sealant tape, namely butyl rubber tape.

After that, the installation site in the form of a dug trench or pit is covered with earth and carefully tamped.

Figure 8 illustrates the assembled 3D model of the grounding device.

Figure 9 illustrates an assembly drawing of a grounding device.

Examples of implementation of the claimed invention.

I. The Nizhnovenergo branch of IDGC of Center and Volga Region, JSC, together with our company, has developed a program for a modular-pin grounding system on the territory of the Kstovsky district.

This technology was applied at sites:

1. 13.10.2008 - strengthening of the grounding loop of TP-103, Nikulskoye village.

Purpose of the work: strengthening the grounding loop of TP-103, Nikulskoye village, resistance measurement was 5, 3 ohms.

Climatic conditions: outer layer temperature + 8 ° С, dry, clear.

Equipment and measuring instruments used: perforator, vertical rod assembly grounding electrode, 1.5 m long, 14.2 mm in diameter, device Ф4103.

Work program: in the process of strengthening the ground loop, sequential deepening was carried out to the standard length of the rod - 1.5 m, followed by resistance measurement.

Result: when combining the Tp-103 ground loop and the buried vertical electrode, the total resistance was 1.7 Ohm.

11/23/2008 A repeated measurement of the resistance of the vertical grounding device (without connection to the existing circuit) was carried out, the resistance value of which was 4.6 ohms.

2. 19.12.2008 - Installation of a new ground loop at TP-3 Old Kstovo (Hospital).

Purpose of work: implementation of a new ground loop in accordance with the developed project.

Equipment and measuring instruments used: perforator, vertical rod assembly grounding electrode, 1.5 m long, 14.2 mm in diameter, device Ф4103.

Work program: implementation of a new ground loop, according to the project, with successive deepening of electrodes at 6 points, their conscientious unification, followed by resistance measurement.

According to the design solution, a ground loop with a resistance of 3.5 ohms was obtained.

II. The Nizhnovenergo branch of IDGC of Center and Volga Region, JSC, together with our company, developed a program for the introduction into trial operation of prefabricated earthing devices (KUZS) on the territory of the Kstovskoye ES PA, Nizhnovenergo branch of IDGC of Center and Volga Region, JSC.

The purpose of this trial operation:

1. Possibility of creating grounding devices with low spreading resistance in soils with high resistivity;

2. Constant resistance of the grounding device, which does not depend on seasonal changes in climatic conditions in the soil;

3. High resistance to corrosion;

4. Durability (Service life up to 30 years);

5. Simple points of view of installation;

6. Possibility of mounting a vertical buried grounding electrode to a depth of 30 meters.

7. Eliminate the need to dismantle asphalt or paving stones in urban environments.

This technology was applied at sites:

1. 07/27/2011 - strengthening of the grounding loop of TP-182, Krasnogorka village, Kstovskiy RES.

Purpose of the work: strengthening the ground loop of TP-182 in Krasnogorka village, Kstovskiy RES, confirmation of the declared technical characteristics during operation, when the equipment is exposed to environmental factors, substantiation of subsequent use at the facilities of the Nizhnovenergo branch at the design, new construction and repair stages.

The resistance measurement of the existing circuit was 23.4 ohms.

Climatic conditions: outside air temperature + 8 ° С.

Soil characteristics: sandy, dry.

Equipment and measuring instruments used: perforator, earthing vertical rod assembly EZN-34-15-09 made of stainless steel, 1.5 m long, 20 mm in diameter, device F4103.

Work program: in the process of strengthening the ground loop, sequential deepening was carried out to a standard length of the rod of 1.5 m, followed by resistance measurement.

The results of measuring the resistance when deepening the electrode are shown in table. 1

When combining the Tp-182 circuit and a buried vertical electrode (buried to a depth of 13.5 m), the total resistance of the circuit was 2.6 Ohm.

Additional measurements of contact connections were also given.

The measurement results are shown in table. 2

09.09.2011 The resistance of the vertical grounding device was re-measured, the resistance value of which was 2.6 Ohm.

Conclusion: experimental data, according to examples of implementation, confirm a decrease in resistance, the value of which corresponds to the standards (no more than 4.0 Ohm).

According to the experimental data, the above grounding system can significantly improve the reliability of the grounding device design and improve its quality indicators: reduce the transient electrical resistance of the rod-clamp-conductor connection, reduce the resistance of the vertical grounding device, and almost completely eliminate the destruction of various parts of the grounding rod electrode, especially the connecting couplings that ensure the fastening of the ground rods vertically in relation to each other.

Claims (4)

1. A vertical grounding electrode assembly, consisting of at least two ground rods, at least one connecting sleeve and a lug, and all the threaded parts of the grounding rods have a cylindrical shape, while, depending on the length of the vertical electrode, the grounding lug is selected from a lug having external thread and connected to the grounding rod through the coupling, and the vertical grounding electrode is included in the grounding device, including the grounding conductor, the connection of which to the grounding electrode is carried out using clamps 0.09 meters wide and 0.09 meters high. 2. A method of installing a grounding device, including a vertical assembly grounding electrode, consisting of at least two grounding rods, at least one connecting sleeve and a tip, a grounding conductor, the connection of which to the electrode is carried out using clamps 0.09 meters wide and 0 , 09 meters, which consists in the fact that before the vertical immersion of the first grounding rod of the vertical electrode of the grounding assembly onto the rod from above until it stops, the receiving head and the mounting sleeve are screwed in, and from the bottom they are connected to the stop with the tip, and electrically conductive grease is applied to all threaded connections, then carried out immersion of the assembled structure strictly vertically, after immersion, the mounting sleeve and the receiving head are unscrewed and disconnected from the grounding rod, then the next grounding rod is connected to the first rod through the connecting sleeve, and the next grounding rod is connected to the upper end of the next grounding rod until it stops teach the mounting sleeve and receiving head with preliminary application of electrically conductive lubricant to all threaded connections and immerse the assembled structure strictly vertically, after immersion, repeat the operation of unscrewing the mounting sleeve and receiving head, these operations are repeated until the required value of electrical resistance of the grounding rod and the length of the grounding rod is achieved, after that, the gaps formed during immersion are sealed with an electrically conductive sealing compound, and the electrically conductive composition is diluted with water in a ratio of 1 part of the electrically conductive composition to 5 parts of water, then the upper part of the grounding prefabricated electrode, located above the ground surface, is connected to the grounding conductor using a clamp. 3. The method of claim 2, wherein the ground rod can be made of steel selected from copper-plated, galvanized, or stainless steel. 4. The method of claim 2, wherein the electrically conductive ground rod grease is selected from graphite electrically conductive grease.

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