Large-current drawer cabinet

Abstract

A large-current drawer cabinet comprises a cabinet body, the cabinet body is provided with a cover plate, an insulating mounting plate is arranged in the cabinet body, a circuit breaker is arranged on the insulating mounting plate, one end of the circuit breaker is provided with a first conducting bar, and the other end of the circuit breaker is connected with a second conducting bar through a mutual inductor. According to the drawer cabinet, the drawer cabinet can bear larger current, and the requirements of large-scale industrial equipment, an electric power system and the like for large-current transmission are met.

Description

Technical Field

[0001] This utility model relates to a high-current drawer cabinet. Background Technology

[0002] With economic development, the scale of power systems is constantly expanding, leading to increasingly higher requirements for power supply reliability and flexibility. High-current drawers, as removable switchgear, enable convenient maintenance and replacement of faulty equipment without affecting the overall operation of the power system, thus improving its reliability and maintainability. Simultaneously, as power system voltage levels continue to increase, high-current drawers need to adapt to different voltage levels to meet the transmission and distribution requirements of the power system. Because high-current drawers need to transmit large currents, insufficient current-carrying capacity can cause conductor overheating, affecting equipment performance and safety. Utility Model Content

[0003] To solve the above problems, this technical solution provides a high-current drawer cabinet.

[0004] To achieve the above objectives, the technical solution is as follows:

[0005] A high-current drawer cabinet includes a cabinet body, the cabinet body is provided with a cover plate, an insulating mounting plate is provided inside the cabinet body, a circuit breaker is provided on the insulating mounting plate, one end of the circuit breaker is provided with a first conductive bar, and the other end is connected to a second conductive bar through a current transformer.

[0006] The first conductive bar has a conductive plate at its end, and the conductive plate is electrically connected to multiple plugs.

[0007] In some embodiments, the cabinet has multiple ventilation holes on its sides and bottom.

[0008] In some embodiments, the circuit breaker may also include operating components for controlling the circuit breaker.

[0009] In some embodiments, the first and second conductive busbars are made of copper or copper alloys.

[0010] In some embodiments, the first and second conductive busbars are multi-strand stranded wires or hollow wires.

[0011] In some embodiments, the insulating mounting plate and insulating bracket are made of epoxy resin or polytetrafluoroethylene.

[0012] In some embodiments, the plug-in is a silver alloy or silver-plated.

[0013] The beneficial effects of this application are:

[0014] This application enables the drawer cabinet to withstand greater current, meeting the needs of large industrial equipment, power systems, and other applications for high current transmission. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0016] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model. Figure 1 ;

[0017] Figure 2 This is a schematic diagram of the structure of an embodiment of the present utility model. Figure 2 . Detailed Implementation

[0018] To make the technical problems solved, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0019] Please refer to Figure 1-2 As shown, a high-current drawer cabinet includes a cabinet body 1, a cover plate 2, an insulating mounting plate 3 inside the cabinet body 1, a circuit breaker 4 on the insulating mounting plate 3, a first conductive bar 5 at one end of the circuit breaker 4, and a second conductive bar 7 connected to the other end through a current transformer 6.

[0020] The first conductive bar 5 has a conductive sheet 8 at one end, and the conductive sheet 8 is electrically connected to a plurality of plugs 9.

[0021] This application enables the drawer cabinet to withstand greater current, meeting the needs of large industrial equipment, power systems, and other applications for high current transmission.

[0022] When a large current passes through, heat is generated in the conductors and contact points. Poor heat dissipation can lead to excessively high temperatures, accelerating the aging of insulation materials and even causing malfunctions. The cabinet 1 is equipped with multiple ventilation holes on its sides and bottom, and the drawers have well-designed heat dissipation channels, such as adding heat sinks or ventilation holes. Insulation materials with good heat dissipation performance are used. A temperature monitoring device is installed to monitor the temperature in real time. When the temperature exceeds the set value, cooling measures are taken, such as starting a fan or cutting off the circuit. This effectively dissipates the heat generated when a large current passes through, keeping the equipment's operating temperature within a safe range. This not only improves the reliability of the equipment but also extends its service life. For example, in some high-temperature industrial production workshops, high-current drawers can operate stably, unaffected by ambient temperature or their own heat generation.

[0023] High-current drawers need to maintain good insulation performance under high voltage and high current environments to prevent leakage and short-circuit accidents. Therefore, this application also includes an insulating bracket 10 for fixing and supporting the circuit breaker 4, using high-strength insulating brackets and clamps; optimizing the conductor arrangement and connection method to reduce the impact of electrodynamic forces; performing electrodynamic calculations and simulations to assess the equipment's ability to withstand fault conditions in advance; selecting high-insulation materials such as epoxy resin and polytetrafluoroethylene; optimizing the insulation structure design, increasing the insulation spacing and number of insulation layers; and conducting insulation performance tests and withstand voltage tests to ensure the equipment meets safety standards. Through techniques such as reasonably fixing and supporting conductors, optimizing the arrangement and connection method, and performing electrodynamic calculations and simulations, the high-current drawer can maintain structural stability when strong electrodynamic forces are generated by faults such as short circuits, avoiding conductor deformation and loosening of contact points, thereby reducing equipment damage and failures caused by electrodynamic forces and improving the safety and stability of the equipment. The selection of high-insulation materials and the optimization of the insulation structure design enable the high-current drawer to effectively prevent leakage and short-circuit accidents under high voltage and high current environments. After rigorous insulation performance testing and withstand voltage testing, its insulation performance is ensured to meet safety standards, guaranteeing the safety of operators and equipment. For example, in some power locations with extremely high safety requirements, such as substations, the high-current drawer can operate reliably, preventing safety accidents caused by insulation failures.

[0024] In the event of faults such as short circuits, high currents generate strong electrodynamic forces, which may cause conductor deformation and loosening of contacts, affecting the reliability of the equipment. Poor contact between drawers and cabinets, and between conductors, can lead to increased contact resistance, severe heat generation, and affect the normal operation of the equipment. To address this, high-conductivity materials, such as high-quality copper or copper alloys, are used as conductors; the cross-sectional area of ​​the conductors is increased to reduce current density; the conductor structure design is optimized, such as using multi-stranded wires or hollow conductors, to improve current transmission efficiency; high-quality contact materials, such as silver alloys or silver-plated contacts, are used; the contact structure design is optimized to ensure uniform contact pressure; and regular inspection and maintenance of contact points are performed, with timely cleaning of oxide layers and dirt to ensure good contact. By employing high-conductivity materials, increasing the conductor cross-sectional area, and optimizing the conductor structure, high-current drawers can withstand thousands of amperes or even higher currents, meeting the high-current transmission needs of large industrial equipment and power systems. For example, in large data centers, high-current drawers (rated current 800A) ensure a stable high-current power supply for servers and other equipment. The use of high-insulation materials and optimized insulation structure design effectively prevents leakage and short-circuit accidents under high voltage and high current environments. Rigorous insulation performance testing and withstand voltage tests ensure that its insulation performance meets safety standards, protecting the safety of operators and equipment. In power locations with extremely high safety requirements, such as substations, high-current drawers operate reliably, preventing safety accidents caused by insulation failures. The use of high-quality contact materials and optimized contact structure design, along with regular inspection and maintenance, ensures good contact between the drawer and the cabinet, and between conductors, resulting in low and stable contact resistance. This helps reduce heat generation, improve equipment operating efficiency, reduce energy consumption, and also reduces the failure rate caused by poor contact, improving the overall performance and reliability of the equipment.

[0025] It also includes an operating component 10 for controlling the circuit breaker 4 and for operating various functions of the circuit breaker.

[0026] The circuit breaker 4 is equipped with phase spacers. Their function is to increase the electrical clearance and creepage distance and strengthen insulation performance when the distance between phases A, B and C is too close and already at the boundary of the safety distance. They can also prevent arc short circuits, avoid short circuits caused by foreign objects, and improve safety.

[0027] The above description is only a preferred embodiment of this application and is not intended to limit the scope of implementation of this application. Any other embodiments whose principles and basic structures are the same as or similar to those of this application are within the protection scope of this application.

Claims

1. A high current drawer cabinet characterized by, The utility model relates to a circuit breaker, including cabinet (1), the cabinet (1) is equipped with cover plate (2), be equipped with insulating mounting plate (3) in the cabinet (1), be equipped with circuit breaker (4) on the insulating mounting plate (3), one end of circuit breaker (4) is equipped with first electrically conductive row (5), and the other end is connected with second electrically conductive row (7) through mutual inductor (6); The first electrically conductive row (5) end is equipped with electrically conductive sheet (8), and a plurality of inserts (9) are electrically connected to the electrically conductive sheet (8).

2. A high current drawer cabinet according to claim 1, characterized in that: The cabinet (1) side and bottom are equipped with a plurality of ventilation holes.

3. A high current drawer cabinet according to claim 1, characterized in that: Also including the operating part (10) for controlling the circuit breaker (4).

4. A high current drawer cabinet according to claim 1, characterized in that: The first electrically conductive row (5) and second electrically conductive row (7) are copper or copper alloy.

5. A high current drawer cabinet according to claim 4, characterised in that: The first electrically conductive row (5) and second electrically conductive row (7) are multi-strand wire or hollow.

6. A high current drawer cabinet according to claim 3, characterized in that: The insulating mounting plate (3) is epoxy resin or polytetrafluoroethylene.

7. A high current drawer cabinet according to claim 1, characterized in that: The insert (9) is silver alloy or silver-plated.

8. A high current drawer cabinet according to claim 1, characterized in that: The circuit breaker (4) is equipped with phase spacing plate.

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