Grounding resistor with protection function

Abstract

The utility model relates to grounding resistor technical field, and disclose a grounding resistor with protection function, including as the ground wire in grounding resistor for with the earth establishes low impedance electrical connection ground wire still include: set up in the ground wire end head is provided with power clip, protection component, protection component sets up in the end head of ground wire, wherein, the protection component includes the protection cover of setting in the ground wire end head, the utility model discloses when the personnel detects the soil resistivity or the effectiveness of grounding system around the grounding resistor, through the power clip is through and is inserted into the shell and is docked with the ground wire end head, can effectively reduce the area of ground wire exposed to the outside, avoid personnel maintenance process tool or hand accidental false touch ground wire, simultaneously when the personnel debugs power clip, through two compensation strips can change the docking position with the ground wire end head under the premise of guaranteeing the insertion aperture is unchangeable according to the position of power clip, thereby played the dual effect of protection and improvement adaptability.

Description

Technical Field

[0001] This utility model relates to the field of grounding resistor technology, specifically a grounding resistor with protective function. Background Technology

[0002] Ground resistors are crucial protective devices for the safe operation of power systems, electrical equipment, and buildings. Their core function is to establish a low-impedance electrical connection between the ground wire and the earth, thereby providing a reliable and smooth discharge path for fault current in the event of a fault. This prompts line protection devices to quickly trip and cut off the power supply, effectively preventing equipment casings from becoming energized and ensuring personal safety and equipment integrity.

[0003] During actual installation and maintenance, personnel need to periodically test the soil resistivity or the effectiveness of the grounding system around the grounding resistor. Standard operating procedures, such as the three-stage measurement method, require connecting the current output and voltage detection contacts of the test equipment to the buried ground wire terminal to form a complete test circuit.

[0004] However, this operation presents significant safety hazards and inconveniences: the ground wire end is usually an exposed metal conductor. During testing, the testing instrument injects a certain AC test current into the ground wire. After connecting the test leads, personnel often have to perform secondary adjustments or tightening of the connection points to adjust the probe position, check the connection reliability, or optimize the measurement accuracy. During this adjustment process, the personnel's operating space is often very limited and the environment is complex. Their hands or tools are very likely to accidentally come into direct contact with the live ground wire end or its connecting parts, which can lead to electric shock accidents. Utility Model Content

[0005] The purpose of this invention is to provide a grounding resistor with protective function to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a grounding resistor with protective function, comprising a ground wire used to establish a low-impedance electrical connection with the earth, and further comprising: A power clamp installed at the end of the ground wire; A protective component is disposed at the end of the ground wire; the protective component includes a protective cover disposed at the end of the ground wire, and compensation strips are provided on both inner sides of the protective cover.

[0007] Preferably, the protective component further includes guide plates disposed on both sides inside the protective cover. The guide plates are designed at ninety degrees, and the inner angles of the guide plates and the protective cover are both arc-shaped. The compensation strip is located between the protective cover and the guide plates.

[0008] Preferably, both compensation strips are made of plastic, and the upper and lower ends of the compensation strips are in contact with the inner wall of the protective cover.

[0009] Preferably, the compensation strip has multiple deformation grooves arranged in a rectangular array on the side near the guide plate.

[0010] Preferably, the protective cover has a docking hole on its front side, and an insert shell is fixedly connected between the opposite ends of the two compensation strips. The insert shell slides horizontally in the docking hole, and the clamping end of the power clamp passes through the insert shell and docks with the end of the ground wire.

[0011] Preferably, insulating pads are provided on the upper and lower inner sides of the protective cover, and contact pads are provided on the opposite sides of the two insulating pads at the ground wire end, with the opposite sides of the two contact pads in contact with the ground wire.

[0012] Preferably, a cover plate is movably connected to the top of the protective cover via a pivot, and the cover plate is designed in a horizontal L-shape to cover the docking holes of the protective cover under normal circumstances.

[0013] Preferably, the surface of the power clamp is provided with an insulating sleeve, and the insulating sleeve is made of the same material as the insulating pad, both of which are silicone.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: When personnel test the soil resistivity or the effectiveness of the grounding system around the grounding resistor, this utility model can effectively reduce the exposed area of ​​the grounding wire by connecting the power clamp through the insertion shell to the grounding wire end, thus avoiding accidental contact with the grounding wire by tools or hands during maintenance. At the same time, when personnel adjust the power clamp, the two compensation strips can change the connection position with the grounding wire end according to the position of the power clamp while keeping the insertion diameter unchanged, thereby achieving the dual effect of protection and improved adaptability. Attached Figure Description

[0015] Figure 1 A three-dimensional structural diagram of a grounding resistor with protective function provided by this utility model; Figure 2 A schematic diagram of the disassembled structure of the power clip and ground wire provided by this utility model; Figure 3 A schematic diagram of the internal structure of the protective cover provided by this utility model; Figure 4 A disassembled schematic diagram of the internal structure of the protective cover provided by this utility model; Figure 5 A structurally disassembled schematic diagram of the insulating pad, contact pad, and protective cover provided by this utility model; Figure 6 Provided by this utility model Figure 4A magnified schematic diagram of the structure at point A in the middle.

[0016] In the diagram: 1. Ground wire; 2. Insulating sleeve; 3. Protective component; 301. Protective cover; 302. Compensating strip; 303. Insertion shell; 304. Guide plate; 305. Insulating pad; 306. Contact pad; 307. Deformation groove; 308. Connecting hole; 309. Cover plate; 4. Power clamp. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figures 1-6 As shown, a grounding resistor with protective function includes a ground wire 1, which serves as a grounding resistor for establishing a low-impedance electrical connection with the earth, and also includes a power clamp 4 disposed at the end of the ground wire 1. Protection component 3 is located at the end of ground wire 1; please refer to Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, the protective component 3 includes a protective cover 301 disposed at the end of the ground wire 1, and compensation strips 302 are provided on both inner sides of the protective cover 301; the protective component 3 also includes guide plates 304 disposed on both inner sides of the protective cover 301, the guide plates 304 are designed at ninety degrees, and the inner corners of the guide plates 304 and the protective cover 301 are both arc-shaped, and the compensation strips 302 are located between the protective cover 301 and the guide plates 304; both compensation strips 302 are made of plastic, and the upper and lower end faces of the compensation strips 302 are in contact with the inner wall of the protective cover 301; the side of the compensation strips 302 near the guide plates 304 has multiple deformation grooves 307 arranged in a rectangular array; When personnel need to connect the power clamp 4 to the end of the ground wire 1 and test the soil resistivity around the grounding resistor or the effectiveness of the grounding system, first open the cover plate 309, then pinch the rear end of the power clamp 4 to open its front end, and then insert its front end into the insertion shell 303 to connect to the end of the ground wire 1, and the test can begin. It should be noted that the diameter of the aforementioned insert shell 303 is close to the opening range of the front end of the conventional power clamp 4 on the market. Therefore, in actual use, only the power clamp 4 can pass through, thus preventing personnel's hands and tools from contacting the end of the ground wire 1. When personnel need to adjust the position of the power clamp 4 for the second time, they only need to press the rear end of the power clamp 4 to open its front end and detach it from the contact with the end of the ground wire 1 and move it laterally. At this time, the insertion shell 303 will move horizontally after being squeezed by the power clamp 4 in one direction. The two compensation strips 302 connected to it will slide between the guide plate 304 and the protective cover 301 to compensate for the position of the insertion shell 303. This achieves the effect of changing the docking position with the end of the ground wire 1 according to the position of the power clamp 4 while keeping the insertion diameter unchanged. The protective cover 301 has a docking hole 308 on the front side. A through shell 303 is fixedly connected between the opposite ends of the two compensation strips 302. The through shell 303 slides horizontally in the docking hole 308. The clamping end of the power clamp 4 passes through the through shell 303 and docks with the end of the ground wire 1. Please see Figure 5 As shown, insulating pads 305 are provided on the upper and lower sides of the protective cover 301. Contact pads 306 are provided on the opposite side of the two insulating pads 305 and at the end of the ground wire 1. The opposite side of the two contact pads 306 is in contact with the ground wire 1. A cover plate 309 is movably connected to the top of the protective cover 301 via a pivot. The cover plate 309 has a horizontal L-shaped design and is used to cover the docking hole 308 of the protective cover 301 under normal circumstances. An insulating sleeve 2 is provided on the surface of the power clamp 4. The material of the insulating sleeve 2 is the same as that of the insulating pad 305, and both are silicone. It should be noted that the insulating pad 305, contact points and insulating sleeve 2 are all made of polyvinyl chloride. PVC is a low-cost material with strong insulation properties, suitable for low-voltage insulation protection. It also has good resistance to chemical corrosion and is suitable for use in complex environments. Working principle: When personnel test the soil resistivity or the effectiveness of the grounding system around the grounding resistor, by passing the power clamp 4 through the insertion shell 303 and connecting it to the end of the ground wire 1, the exposed area of ​​the ground wire 1 can be effectively reduced, avoiding accidental contact with the ground wire 1 by tools or hands during maintenance. When personnel adjust the power clamp 4, the two compensation strips 302 can change the connection position with the end of the ground wire 1 according to the position of the power clamp 4 while keeping the insertion diameter unchanged, thus achieving the dual effect of protection and improved adaptability.

[0019] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0020] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A grounding resistor with protective function, comprising a ground wire (1) serving as a grounding resistor for establishing a low-impedance electrical connection with the earth, characterized in that, Also includes: The power clamp (4) is installed at the end of the ground wire (1). The protective component (3) is disposed at the end of the ground wire (1); the protective component (3) includes a protective cover (301) disposed at the end of the ground wire (1), and the protective cover (301) has compensation strips (302) on both inner sides.

2. A grounding resistor with protective function according to claim 1, characterized in that: The protective component (3) also includes guide plates (304) disposed on both sides inside the protective cover (301). The guide plates (304) are designed at ninety degrees. The inner angles of the guide plates (304) and the protective cover (301) are arc-shaped. The compensation strip (302) is located between the protective cover (301) and the guide plates (304).

3. A grounding resistor with protective function according to claim 1, characterized in that: Both compensation strips (302) are made of plastic, and the upper and lower ends of the compensation strips (302) are in contact with the inner wall of the protective cover (301).

4. A grounding resistor with protective function according to claim 1, characterized in that: The compensation strip (302) has multiple deformation grooves (307) arranged in a rectangular array on the side near the guide plate (304).

5. A grounding resistor with protective function according to claim 1, characterized in that: The protective cover (301) has a docking hole (308) on the front side. A through shell (303) is fixedly connected between the opposite ends of the two compensation strips (302). The through shell (303) slides horizontally in the docking hole (308). The clamping end of the power clamp (4) passes through the through shell (303) and docks with the end of the ground wire (1).

6. A grounding resistor with protective function according to claim 1, characterized in that: Insulating pads (305) are provided on the upper and lower sides of the protective cover (301). Contact pads (306) are provided on the opposite side of the two insulating pads (305) and at the end of the ground wire (1). The opposite side of the two contact pads (306) is in contact with the ground wire (1).

7. A grounding resistor with protective function according to claim 1, characterized in that: A cover plate (309) is movably connected above the protective cover (301) via a pivot. The cover plate (309) is designed in a horizontal L-shape to cover the docking hole (308) of the protective cover (301) under normal circumstances.

8. A grounding resistor with protective function according to claim 1, characterized in that: The surface of the power clamp (4) is provided with an insulating sleeve (2), and the material of the insulating sleeve (2) is the same as that of the insulating pad (305) and both are silicone.

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