A pole and on-pole switch matching voltage transformer integrated connection structure

Abstract

This utility model relates to the field of power equipment technology and provides an integrated connection structure for a voltage transformer and pole-mounted switch, including a voltage transformer body and a solid-sealed pole. The primary high-voltage end of the voltage transformer body is inserted into the solid-sealed pole. A stepped silicone adapter is wrapped around the primary high-voltage end. The silicone adapter is made of pre-formed semiconductor silicone rubber material, providing a fully enclosed insulation seal outside the primary high-voltage end of the voltage transformer body. A conductive metal layer is sprayed from the bottom of the voltage transformer body to the bottom of the silicone adapter on the outer surface, forming a continuous grounding path. The conductive metal layer is connected to the grounding system of the switchgear through a grounding connector. The stepped silicone adapter achieves a fully enclosed insulation seal for the primary high-voltage end of the voltage transformer, while the conductive metal layer on the outer surface of the transformer body and reliable grounding form an equipotential shield, thus comprehensively solving the insulation and grounding problems.

Description

Technical Field

[0001] This utility model relates to the field of power equipment technology, specifically to an integrated connection structure of a pole and a voltage transformer for a pole-mounted switch. Background Technology

[0002] When traditional pole-mounted switches are installed outdoors with voltage transformers, the primary high-voltage end is typically inserted directly into a solidified pole, exposed to the air. Due to the alternating electric field, an induced voltage is generated, making safe operation impossible under energized conditions. Existing technology has used a method of inserting the high-voltage end into the solidified pole and then filling the gap. However, because the shrinkage rate of the filler material differs from that of the solidified pole and the voltage transformer during synchronous casting and curing, insulation gaps form at the interface. Under lightning strikes or overvoltage conditions, there is still a risk of breakdown, and the insulation strength and safety performance need to be improved. Utility Model Content

[0003] In view of this, the purpose of this utility model is to propose an integrated connection structure for a voltage transformer that is matched with a pole and a pole-mounted switch. The structure achieves full-wrap insulation and sealing of the high-voltage terminal on the primary side of the voltage transformer through a stepped silicone adapter. At the same time, by setting a conductive metal layer on the outer surface of the transformer body and reliably grounding it, an equipotential shield is formed, thereby comprehensively solving the insulation and grounding problems.

[0004] To achieve the above objectives, this utility model provides the following technical solution: This utility model provides an integrated connection structure for a voltage transformer that is matched with a pole and a pole-mounted switch, including a voltage transformer body and a solid-sealed pole, wherein the primary high-voltage end of the voltage transformer body is inserted into the solid-sealed pole. The primary high-voltage terminal is wrapped with a stepped silicone adapter, which is made of pre-formed semiconductor silicone rubber material and is fully enclosed and insulated on the outside of the primary high-voltage terminal of the voltage transformer body. The outer surface of the voltage transformer body is coated with a conductive metal layer from the bottom of the body to the bottom of the silicone adapter, forming a continuous grounding path. The conductive metal layer is connected to the grounding system of the switch cabinet through a grounding connector.

[0005] As a further embodiment of this utility model, the stepped structure of the silicone adapter is used to achieve an interference fit with the solid-sealed pole to form a fully enclosed sealed insulation.

[0006] As a further embodiment of this utility model, the stepped structure of the silicone adapter includes at least two cylindrical segments of different diameters, which are connected by a conical transition segment. The conical transition segment has a cone angle of 15° to 60°, which is used to guide stress distribution when the solid-sealed pole is inserted to avoid local tearing of the silicone adapter.

[0007] As a further embodiment of this utility model, the silicone adapter is made of high-temperature resistant and anti-aging silicone rubber material, and the inner ring of the silicone adapter is pre-formed with a semiconductor layer to ensure that the induced charge is effectively guided to the grounding terminal.

[0008] As a further embodiment of this utility model, the silicone adapter is integrally injection molded and disposed outside the primary high-voltage terminal, and a gapless interface is formed between the inner wall of the silicone adapter and the outer surface of the primary high-voltage terminal, and the pre-formed semiconductor is a substrate material disposed in the stepped structure of the silicone adapter.

[0009] As a further embodiment of this utility model, the grounding connector is a metal braided strip or conductive adhesive.

[0010] As a further embodiment of this utility model, the spraying range of the conductive metal layer covers the area from the bottom of the transformer body to the silicone adapter, and maintains equipotential with the cabinet or structure to suppress surface discharge and local electric field concentration.

[0011] As a further embodiment of this utility model, the conductive metal layer is a silver-based or copper-based conductive layer formed by a spraying process, with a thickness of 0.1 mm to 0.3 mm. The spraying range of the conductive metal layer is electrically connected to the pre-fabricated semiconductor in the silicone adapter to form a unified equipotential shielding structure to suppress local electric field concentration.

[0012] As a further embodiment of this invention, the pre-fabricated semiconductor is a silicon carbide semiconductor layer with a resistivity of 10⁻⁶. 3 -10 6 The Ω·cm, and the pre-fabricated semiconductor and the conductive metal layer are directly connected by conductive adhesive to ensure that the induced charge is effectively guided to the grounding system.

[0013] As a further embodiment of this utility model, the integrated connection structure is applied to pole-mounted switches of 10kV outdoor power distribution lines.

[0014] Compared with the prior art, the integrated connection structure of the pole and the voltage transformer matched with the pole-mounted switch proposed in this utility model has the following advantages: This invention completes installation by wrapping a prefabricated stepped silicone adapter around the high-voltage end of the primary side, spraying a conductive metal layer onto the outer surface of the voltage transformer body, inserting the assembled structure into the solidified pole, and connecting it to the grounding system via a grounding connector. This invention achieves full-coverage sealing insulation of the high-voltage end of the primary side through the stepped silicone adapter, fundamentally eliminating alternating electric fields and induced voltages caused by exposure. The conductive metal layer spraying technology forms a reliable grounding path, effectively guiding induced charges and leakage currents, suppressing surface discharge and localized electric field concentration. The overall structure is simple and easy to install, requiring no skilled workers' caulking techniques, reducing human error and improving production efficiency. It has good adaptability and reliability, adapting to temperature changes during operation, avoiding interface gaps caused by thermal expansion and contraction, and ensuring reliable insulation sealing during long-term operation.

[0015] These or other aspects of this application will become more apparent from the following description of embodiments. It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only, and are not intended to limit the application. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or related technologies, the accompanying drawings used in the description of the exemplary embodiments or related technologies will be briefly introduced below. The drawings are used to provide a further understanding of this utility model and constitute a part of the specification. They are used together with the embodiments of this utility model to explain this utility model and do not constitute a limitation on this utility model. In the drawings: Figure 1 This is a structural diagram of an integrated connection structure of a pole and a pole-mounted switch voltage transformer according to an embodiment of the present invention.

[0017] Figure 2 This is a structural diagram of the silicone adapter in an integrated connection structure of a pole and a pole-mounted switch voltage transformer according to an embodiment of the present utility model.

[0018] Marked in the image: 1-Voltage transformer body, 2-Primary high voltage terminal, 3-Solid-sealed pole, 4-Silicone adapter, 5-Conductive metal layer, 6-Pre-fabricated semiconductor, 7-Grounding connector. Detailed Implementation

[0019] The present application will now be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model are further described in detail below with reference to specific examples and the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit this application.

[0021] It should be noted that all uses of the terms "first" and "second" in the embodiments of this utility model are for the purpose of distinguishing two different entities or different parameters with the same name. Therefore, "first" and "second" are merely for convenience of expression and should not be construed as limiting the embodiments of this utility model. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion, such as other steps or units inherent in a process, method, system, product, or device that includes a series of steps or units.

[0022] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0023] The flowchart shown in the attached diagram is for illustrative purposes only and does not necessarily include all content and operations / steps, nor does it necessarily have to be performed in the order described. For example, some operations / steps can be broken down, combined, or partially merged, so the actual execution order may change depending on the actual situation.

[0024] The following detailed description of some embodiments of this application is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0025] See Figures 1 to 2 As shown, an embodiment of this utility model provides an integrated connection structure for a voltage transformer and a pole-mounted switch, including a voltage transformer body 1 and a solidified pole 3. The primary high-voltage terminal 2 of the voltage transformer body 1 is inserted into the solidified pole 3. The primary high-voltage terminal 2 is wrapped with a stepped silicone adapter 4. The silicone adapter 4 is made of silicone rubber material with pre-formed semiconductor 6, and is fully enclosed and insulated on the outside of the primary high-voltage terminal 2 of the voltage transformer body 1. The outer surface of the voltage transformer body 1 is coated with a conductive metal layer 5 from the bottom of the body to the bottom of the silicone adapter 4, forming a continuous grounding path. The conductive metal layer 5 is connected to the grounding system of the switch cabinet through a grounding connector 7, effectively solving the problems of insulation sealing and electric field shielding of the primary high-voltage terminal.

[0026] In this embodiment, the stepped structure of the silicone adapter 4 is used to achieve an interference fit with the solidified electrode post 3, forming a fully enclosed sealed insulation. The stepped structure of the silicone adapter 4 includes at least two cylindrical segments of different diameters, which are connected by a tapered transition section. The tapered transition section has a cone angle of 15° to 60°, which is used to guide stress distribution when the solidified electrode post 3 is inserted, and to avoid local tearing of the silicone adapter 4.

[0027] In some embodiments, the tapered transition section of the silicone adapter 4 has a taper angle of 45°, enabling a smooth connection between adjacent cylindrical sections via the tapered transition section. The taper angle of the tapered transition section is optimized to 45°, which ensures that when the component is inserted into the solidified terminal 3, the assembly stress can be effectively guided and evenly distributed, avoiding stress concentration that could cause localized tearing at the lip or shoulder of the silicone adapter 4, thus guaranteeing the reliability of the interference fit and the sealing life. The inner ring of the silicone adapter 4 is pre-formed with a semiconductor layer to ensure that the induced charge is effectively guided to the grounding terminal. The pre-formed semiconductor 6, preferably silicon carbide, serves as a functional filler and is uniformly dispersed in the matrix material of the silicone adapter 4 during the mixing process, giving it overall semi-conductive properties. This allows the silicone adapter 4 to not only provide insulation and sealing but also act as a pressure equalizer.

[0028] In this embodiment, the silicone adapter 4 is made of high-temperature resistant and aging-resistant silicone rubber material, and the grounding connector 7 is a metal braided strip or conductive adhesive. The silicone adapter 4 is integrally injection molded and disposed on the outside of the primary high-voltage terminal 2. A gapless interface is formed between the inner wall of the silicone adapter 4 and the outer surface of the primary high-voltage terminal 2. The pre-fabricated semiconductor 6 is a substrate material disposed in the stepped structure of the silicone adapter 4.

[0029] In the fabrication of the silicone adapter 4, high-strength, high-tear-strength, high-temperature-resistant (temperature resistance grade ≥150℃) and anti-aging liquid silicone rubber (LSR) or high-temperature vulcanized silicone rubber (HTV) is selected as the matrix material. For the pre-fabricated semiconductor 6, silicon carbide (SiC) micropowder is selected as the functional semiconductor filler to ensure uniform dispersion in the silicone rubber matrix, forming a stable conductive network and stabilizing the volume resistivity of the final composite material at 10 Ω·cm. 3 -10 6Within the target range of Ω·cm. During preparation, raw silicone rubber and pre-calculated proportions of silicon carbide micropowder are mixed in a two-roll mill. Temperature, time, and shear force are controlled during the mixing process to ensure uniform dispersion of the filler and prevent agglomeration. After mixing, a homogeneous, grayish-black semiconductor silicone rubber compound is obtained. The final geometry of the silicone adapter 4 is replicated using a mold cavity. The mold cavity has a stepped structure, a conical transition section, and a core. The stepped structure includes at least two cylindrical sections with different diameters. The cone angle of the conical transition section is strictly controlled between 15° and 60°. The core is used to form the inner cavity surrounding the primary high-pressure end 2.

[0030] When using a mold cavity for integral injection molding, the primary high-voltage terminal 2 of the voltage transformer body 1 is thoroughly cleaned and dried, and a special silicone rubber adhesive (primer) is applied to enhance the adhesion between the silicone rubber and the epoxy resin or ceramic high-voltage terminal surface. Then, the treated voltage transformer body 1 is fixed in the injection mold, ensuring that the primary high-voltage terminal 2 is precisely positioned in the predetermined location within the mold cavity. Next, injection and vulcanization are performed. The mixed semiconductor silicone rubber compound is injected into the injection molding machine barrel and injected into the closed mold cavity under specific temperature and pressure. After the compound fills the cavity, a vulcanization reaction is carried out at a high temperature of 160℃~180℃ and high pressure. The vulcanization process crosslinks the linear silicone rubber molecules into a three-dimensional network structure, thereby achieving curing and forming a permanent, gapless interface bond with the surface of the primary high-voltage terminal 2 through chemical bonds and physical interactions. After vulcanization is complete, the mold is opened and the finished product is removed. At this point, the silicone adapter 4 is a single component, and its base material is a pre-made semiconductor 6 with semiconductor properties that is uniformly dispersed by fillers, which is firmly wrapped around the primary high-voltage end 2.

[0031] At this point, the prepared silicone adapter 4 serves as a pre-assembled component, requiring no additional on-site processing. During installation, simply align the voltage transformer body 1 and the pre-formed integrated silicone adapter 4 with the socket of the solid-sealed terminal 3 and press them smoothly into place axially. The maximum outer diameter of the silicone adapter 4 is slightly larger than the inner diameter of the socket of the solid-sealed terminal 3, with an interference fit of 0.5mm to 2mm. During the pressing process, the tapered transition section contacts and begins to compress first, guiding the assembly force to be evenly distributed and avoiding stress concentration. Ultimately, the stepped cylindrical surface of the silicone adapter 4 forms a tight interference fit with the inner wall of the solid-sealed terminal 3, achieving full-wrap sealing and insulation, effectively isolating air, moisture, and contaminants.

[0032] In this embodiment, the spraying range of the conductive metal layer 5 covers the area from the bottom of the transformer body to the silicone adapter 4, and maintains equipotential with the cabinet or structure to suppress surface discharge and local electric field concentration.

[0033] The conductive metal layer 5 is a silver-based or copper-based conductive layer formed by a spraying process, with a thickness of 0.1 mm to 0.3 mm. The sprayed area of ​​the conductive metal layer 5 is electrically connected to the pre-fabricated semiconductor 6 within the silicone adapter 4, forming a unified equipotential shielding structure to suppress local electric field concentration. The pre-fabricated semiconductor 6 is a silicon carbide semiconductor layer with a resistivity of 10⁻⁶. 3 -10 6 The Ω·cm, and the pre-fabricated semiconductor 6 and the conductive metal layer 5 are directly connected by conductive adhesive to ensure that the induced charge is effectively guided to the grounding system.

[0034] Before spraying the conductive metal layer 5, the outer surface of the epoxy resin shell of the voltage transformer body 1 is roughened by sandblasting from the bottom to the planned coverage area and thoroughly cleaned to significantly increase the surface area and adhesion. Areas that do not need to be sprayed, such as terminals and nameplates, are masked for protection. A continuous and dense conductive metal layer 5 is formed by spraying, ensuring that the spraying range extends upward to the bottom stepped area of ​​the silicone adapter 4 to achieve physical contact with the silicone body of the pre-fabricated semiconductor 6. At the junction area between the bottom of the silicone adapter 4 and the conductive metal layer 5, a layer of high-performance conductive epoxy adhesive is applied. This conductive epoxy adhesive simultaneously wets the silicone surface and the metal layer surface. The wetted silicone surface can connect with the pre-fabricated semiconductor 6 to form a low-resistance ohmic contact point to ensure electrical continuity. When the grounding connector 7 uses metal braided tape, one end is firmly pressed onto the conductive metal layer 5 using a stainless steel clamp. Before pressing, local grinding can be performed to ensure good contact. The other end is connected to the grounding busbar of the switch cabinet by bolts. When conductive adhesive is used for the grounding connector 7, it is applied over a large area to the designated grounding area of ​​the conductive metal layer 5 and then directly connected to the grounding wire.

[0035] In this embodiment, the integrated connection structure is applied to a pole-mounted switch of a 10kV outdoor power distribution line. During operation, an extremely strong distorted electric field exists around the primary high-voltage terminal 2. The pre-fabricated semiconductor 6, which is immediately attached to the outside, acts as a buffer layer. The resistivity of the pre-fabricated semiconductor 6 is 10. 3 -10 6 The Ω·cm value, falling between that of an insulator and a conductor, absorbs and homogenizes the electric field, smoothing the potential gradient and preventing electric field concentration, thus achieving electric field homogenization and transition. Furthermore, the homogenized induced charge and leakage current are guided to their outer edge through the semiconductor layer. Since a reliable connection is achieved between the conductive adhesive and the conductive metal layer 5, the charge is rapidly conducted into the low-impedance metal layer. The entire conductive metal layer 5 maintains ground potential due to grounding, thereby forming an equipotential shield outside the voltage transformer, achieving charge conduction and shielding.

[0036] This invention effectively suppresses surface discharge and local electric field concentration through the synergy of the semiconductor layer and the conductive metal layer, completely eliminating the induced voltage generated by the exposed high-voltage end to the air, thus enabling safe operation of adjacent equipment while energized. When the system is powered on, and the primary high-voltage end 2 carries a high voltage, a strong distorted electric field is generated in the surrounding space. The first level of protection (insulation and voltage equalization) is as follows: the silicone adapter 4 acts as the primary insulation, isolating the high potential. Its internal pre-fabricated semiconductor 6 actively equalizes the electric field through its moderate resistivity, smoothing out sharp potential gradients and preventing excessively high local electric field strength. The second level of protection (shielding and grounding) is as follows: the induced charge generated during the equalization process is guided to the periphery of the pre-fabricated semiconductor 6 and then collected by the conductive metal layer 5 through the conductive adhesive interface. Since the conductive metal layer 5 is reliably grounded through the grounding connector 7, its overall potential is equal to that of the earth. Ultimately, the coordinated design of the high-voltage end, semiconductor layer, metal layer, and ground from the inside out creates an equipotential shielding space outside the high-voltage end of the voltage transformer, completely eliminating the electric field coupling between the high-voltage end and the surrounding air, thus eradicating the generation of induced voltage. Simultaneously, the excellent insulation and sealing performance avoids the risk of surface discharge and breakdown caused by moisture and contamination.

[0037] This invention completes installation by wrapping a prefabricated stepped silicone adapter 4 around the high-voltage terminal 2 on the primary side, spraying a conductive metal layer 5 onto the outer surface of the voltage transformer body 1, inserting the assembled structure into the solidified pole 3, and connecting it to the grounding system via a grounding connector 7. This invention achieves full-coverage sealing insulation of the high-voltage terminal 2 on the primary side through the stepped silicone adapter 4, fundamentally eliminating alternating electric fields and induced voltages caused by exposure. The conductive metal layer 5 spraying technology forms a reliable grounding path, effectively guiding induced charges and leakage currents, suppressing surface discharge and local electric field concentration. The overall structure is simple and easy to install, requiring no skilled workers' caulking techniques, reducing human error and improving production efficiency. It has good adaptability and reliability, adapting to temperature changes during operation, avoiding interface gaps caused by thermal expansion and contraction, and ensuring reliable insulation sealing during long-term operation.

[0038] The above are exemplary embodiments disclosed in this utility model. However, it should be noted that various changes and modifications can be made without departing from the scope of the embodiments of this utility model as defined by the claims. The functions, steps, and / or actions of the methods according to the disclosed embodiments described herein do not need to be performed in any particular order. Furthermore, although the elements disclosed in the embodiments of this utility model may be described or claimed individually, they may be understood as multiple unless explicitly limited to a singular number.

[0039] It should be understood that, as used herein, the singular form "a" is intended to include the plural form as well, unless the context clearly supports an exception. It should also be understood that, as used herein, "and / or" refers to any and all possible combinations of one or more of the associatedly listed items. The embodiment numbers disclosed above are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0040] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples. Within the framework of the present invention, technical features of the above embodiments or different embodiments can also be combined, and many other variations of different aspects of the present invention exist, which are not provided in the details for the sake of brevity. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An integrated connection structure for a voltage transformer with a pole and a pole-mounted switch, comprising a voltage transformer body (1) and a solid-sealed pole (3), wherein the primary high-voltage terminal (2) of the voltage transformer body (1) is inserted into the solid-sealed pole (3), characterized in that: The primary high voltage terminal (2) is wrapped with a stepped silicone adapter (4), which is made of silicone rubber material of pre-made semiconductor (6) and is fully wrapped and insulated and sealed to the outside of the primary high voltage terminal (2) of the voltage transformer body (1). The outer surface of the voltage transformer body (1) is coated with a conductive metal layer (5) from the bottom of the body to the bottom of the silicone adapter (4), forming a continuous grounding path; The conductive metal layer (5) is connected to the grounding system of the switch cabinet through the grounding connector (7).

2. The integrated connection structure of the pole and the voltage transformer matching the pole-mounted switch as described in claim 1, characterized in that, The stepped structure of the silicone adapter (4) is used to achieve an interference fit with the solid-sealed pole (3) to form a fully enclosed sealed insulation.

3. The integrated connection structure of the pole and the voltage transformer matching the pole-mounted switch as described in claim 2, characterized in that, The stepped structure of the silicone adapter (4) includes at least two cylindrical segments of different diameters, which are connected by a conical transition section with a cone angle of 15° to 60° to guide stress distribution when the solid-sealed pole (3) is inserted.

4. The integrated connection structure of the pole and the voltage transformer matching the pole-mounted switch as described in claim 3, characterized in that, The silicone adapter (4) is made of silicone rubber material, and the inner ring of the silicone adapter (4) has a semiconductor layer pre-formed to ensure that the induced charge is effectively guided to the grounding terminal.

5. The integrated connection structure of the pole and the voltage transformer matching the pole-mounted switch as described in claim 4, characterized in that, The silicone adapter (4) is integrally injection molded and disposed outside the primary high-voltage terminal (2). A gapless interface bond is formed between the inner wall of the silicone adapter (4) and the outer surface of the primary high-voltage terminal (2). The pre-fabricated semiconductor (6) is a substrate material disposed in the stepped structure of the silicone adapter (4).

6. The integrated connection structure of the pole and the voltage transformer matching the pole-mounted switch as described in claim 1, characterized in that, The grounding connector (7) is a metal braided strip or conductive adhesive.

7. The integrated connection structure of the pole and the voltage transformer matching the pole-mounted switch as described in claim 1 or 5, characterized in that, The conductive metal layer (5) is sprayed over an area from the bottom of the transformer body to the silicone adapter (4) and is kept at the same potential as the cabinet or structure to suppress surface discharge and local electric field concentration.

8. The integrated connection structure of the pole and the voltage transformer matching the pole-mounted switch as described in claim 7, characterized in that, The conductive metal layer (5) is a silver-based or copper-based conductive layer formed by a spraying process, with a thickness of 0.1 mm to 0.3 mm. The spraying range of the conductive metal layer (5) is electrically connected to the pre-fabricated semiconductor (6) in the silicone adapter (4) to form a unified equipotential shielding structure.

9. The integrated connection structure of the pole and the voltage transformer matching the pole-mounted switch as described in claim 8, characterized in that, The pre-fabricated semiconductor (6) is a silicon carbide semiconductor layer with a resistivity of 10. 3 -10 6 Ω·cm, and the pre-fabricated semiconductor (6) and the conductive metal layer (5) are directly connected by conductive adhesive.

10. The integrated connection structure of the pole and the voltage transformer matching the pole-mounted switch as described in claim 1, characterized in that, The integrated connection structure is used in pole-mounted switches for 10kV outdoor power distribution lines.

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