Beijing Ground Rod Company

Hebei Jinneng Electric Power Technology Co., Ltd. is a power tool equipment enterprise integrating R&D, production, sales and service. The Jinneng factory covers an area of more than 1 mu. The company currently has 3 employees and 3 professionally qualified technicians. The company has strong technical force and complete testing methods. Its product quality ranks among the top in the same industry nationwide. The company's main product categories: power tools, safety equipment, electrical machinery, insulation tools, hardware and electrical appliances, cable accessories, hardware labor insurance, etc. Description of grounding rods:
1. Product introduction
Grounding rods are used in line and substation construction to prevent electrostatic induction from nearby live objects and ensure safety when electric shock occurs or when the switch is accidentally closed.
The performance indicators of the grounding rod should comply with/industry technical standards. It is suitable for substation users and construction units such as power plants, power supply, telecommunications, railways, subways, etc. At the same time, special specifications of grounding rods can be customized as required.
The main components of the grounding rod include wire hook clamps, or busbar flat clamps, jumper short-circuit grounding tail wires, terminal noses, headers, grounding terminal clamps or five-proof locking chucks, grounding steel fibers and Composed of grounding operating wires, etc. The wire clip is made of high-quality copper (or aluminum) die-casting with a polished surface and is tightly connected to the wire nose. The wire is an important part of the "Portable Short-Circuit Grounding Rod".
High-voltage ground rod structure: The portable high-voltage ground rod consists of an insulated operating rod, wire clamp, short-circuited soft copper wire, ground rod, ground terminal, bus clamp, ground clamp or ground nail. The grounding rod is made of fiberglass epoxy resin, which has good insulation performance and high strength.
2. Classification
According to voltage level:
Low voltage ground rod (ground rod for substation, 3 ground rod, ground rod, ground rod, hand-held ground rod).
High-voltage grounding rods (grounding rods, 3 grounding rods, grounding rods, grounding rods, grounding rods, indoor busbar type grounding rods, outdoor line type grounding rods.
. According to the structure components
@Flat mouth spiral grounding rod (indoor busbar, substation busbar).
@Round mouth spiral grounding rod (indoor lines, substation lines).
@Double spring compression grounding rod (household Internal lines, substation lines).
@Hand-held grounding rod (indoor busbar, substation busbar) short-circuit grounding rod.
Want to know more
Products
For details, call the national sales hotline immediately: (same number on WeChat),
3. Technical requirements
3. Technical parameters
) High-voltage grounding rod insulating rod part length: handshake part length: Length of metal joint part: Number of sections: Rod diameter: Total length (excluding wire clamp):.
) Nominal cross-section of grounding rods: Total number of rods: Average diameter:. Calculated cross-section::.3 Metal joint part length: Number of sections: Rod diameter:.
3) Nominal cross-section of high-voltage ground rods: Total number of rods: Average diameter: Calculated cross-section:: Insulating rod part length: Handshake part length: Metal joint part length: Number of sections: Rod diameter: Total length (not included Cable clamp):.
3. Requirements for each component
) Insulated operating rod
The operating rod is made of the best quality fiberglass epoxy resin rod. The wire connection clamp has a flat spiral hook, a double spring hook, and a throat. Type hooks, etc. Generally, each group of indoor high and low voltages has three or more roots, and the outdoor high voltage usually has three. The length of the operating rod selected for each voltage level is also different. According to the national standards, the length is as follows:
, 3 grounding rods, grounding rods, grounding rods, operating rod length
, grounding rod operating rod length in meters< br/> , 3 The length of the grounding rod insulating operating rod.m
, The length of the grounding rod insulating operating rod m
, The length of the grounding rod insulating operating rod.m
, The length of the grounding rod insulating operating rod m.
The power frequency withstand voltage test of the operating rod 3 and the ground rod 3 must pass the withstand voltage test for one minute without breakdown. However, the grounding rods should be tested with voltage resistance on 3, respectively, and should be maintained for five minutes without breakdown. The period does not exceed one year.
) Grounding soft copper wire
Grounding soft copper wire, also known as short-circuit, is composed of multiple strands of extremely fine soft copper strands, covered with a transparent insulating sleeve, and then pressed on the wire nose. Ground rods in power systems are an important tool to protect workers when voltage unexpectedly appears on equipment and lines that have been powered off. According to ministerial regulations, the grounding rod must be made of bare copper soft wire of more than ㎡.
Resistance requirements of high-voltage ground rods:
The resistance requirements of high-voltage short-circuit ground rods to ground determine the quality of the ground rods. Generally, according to the power industry/technical regulations, the resistance of each cross-sectional area of the ground rods to ground must not be Greater than the following values:
The resistance to the ground is as follows: Measure the DC resistance between the wiring lugs. For various cross-sections of ㎡, 3㎡, ㎡, ㎡, ㎡, ㎡, the average resistance value per meter should be less than., .,.,.,.,..
Soft copper wire model classification: Model: *+ ground rod, 3*+ ground rod, *+ ground rod, 3*+ ground rod, 3*3+ ground rod.
3) Grounding rod clamp or grounding pin
The wire clamp and grounding clamp are made of high-quality aluminum alloy die-casting with surface oxidation treatment.
The grounding pin is welded with B/ standard carbon structural steel, and the surface is hot-dip galvanized.
4. Instructions for use
.Using environment:
Indoor:
For indoor use, the power equipment is connected to the ground. The wiring clamp adopts a flat spiral type, and the grounding method adopts a ground rod. Clamp (connecting busbar and copper bar type). Low-voltage grounding rods are divided into two types: grounding rods for indoor equipment and grounding rods for outdoor lines. Generally, low-voltage lines adopt a three-phase four-wire system.
Outdoor:
The outdoor circuit adopts double spring type, and the grounding method adopts ground nail method.
.Installation operation
) Verify whether the voltage level of the ground rod is consistent with the voltage level of the operating equipment.
) Installation: Fix the double-eye copper nose on the grounding soft copper wire to the corresponding position of the electric clamp on the ground rod (the electric clamp has fixed and movable types), and connect the single-eye copper nose on the ground rod. The copper nose is fixed on the ground clamp or ground pin to form a complete set of ground rods.
3) The human body must not come into contact with the grounding rod or unbroken wire to prevent induction conduction.
) In places with high induced voltages, construction workers should also wear anti-static clothing.
) A grounding warning sign must be hung at the grounding point.
) When hanging the ground rod: connect the ground clamp first, then connect the electric clamp. When removing the ground rod, you must follow the procedure to first disconnect the electric clamp, and then remove the ground clamp.
) It is strictly prohibited to use a wire clamp instead of winding to create a ground short circuit.
) If there is a grounding point at the suspension point, a grounding rod clamp or a special copper rod should be used for grounding connection. If there is no fixed grounding point available, a temporary grounding point can be used. The depth of the grounding electrode buried underground should not be less than .
) Portable short-circuit grounding rods should be properly kept. Before each use, you should carefully check whether it is intact, the soft copper wire is not exposed, and the nut is not loose, otherwise it must not be used.
) The inspection cycle of the portable short-circuit grounding rod is once every five years, and the inspection items are the same as the factory inspection. After the portable short-circuit grounding rod that has passed the test is subjected to a short circuit, it should be judged based on the size of the short-circuit current and appearance inspection, and generally should be scrapped.
If you want to know more
products
for details, call immediately
National sales hotline: (same number on WeChat),