Load switching cabinet convenient to manage and use method

Abstract

The invention relates to modular equipment for dynamic load switching in a power system, in particular to a load switching cabinet convenient to manage and a use method. According to the invention, efficient expansion, stable operation and intelligent management of the switching cabinet are realized through the cooperation of the modular structure design, the vertical connection of the L-shaped copper bars and the intelligent control unit. The power distribution cabinet comprises a cabinet body, a control unit, a switching unit and a plurality of module units are arranged in the cabinet body, a plurality of heat dissipation hole plates are arranged on the two sides of the upper portion of the cabinet body, a plurality of blind plates are arranged on the two sides of the cabinet body, and a plurality of installation structures are arranged on the inner side of the cabinet body. The module unit is simple in structure, stable operation of the module unit in a vibration environment is ensured through dual fixation of the horizontal guide rails and the bolts, and meanwhile rapid capacity expansion, high-reliability connection and shutdown-free maintenance can be achieved through the composite connection mode of the L-shaped copper bars and the transverse copper bars.

Description

Technical Field

[0001] The present invention relates to modular equipment for dynamic load switching in an electric power system, and more particularly to a load switching cabinet that is easy to manage and a use method thereof. Background Art

[0002] Switching cabinet is a common power equipment, which is mainly used to switch between different power sources and loads. During the switching process, the switching cabinet needs to be controlled by the control system to realize automatic or manual switching between power sources and loads. In the power system, in order to improve the reliability and continuity of power supply, it is often necessary to switch between different power sources and loads to ensure the normal operation of the equipment or system.

[0003] Traditional switch cabinets usually adopt a fixed structure with low modularity. Expansion and maintenance require overall shutdown, resulting in low efficiency. In the existing technology, some improvement solutions adopt modular design, but there are the following problems: 1. Some existing modular switch cabinets use transverse bolts to fix the modules, which may cause the problem of increased contact resistance when expanding the capacity; 2. Some existing switch cabinet modules have insufficient installation stability, low electrical connection reliability, complex current transmission structure between upper and lower modules, and poor expansion flexibility; 2. Some existing switch cabinet control units and module units are not sufficiently integrated, and their dynamic adjustment capabilities are limited.

[0004] Therefore, there is an urgent need to develop a load switching cabinet that is easy to manage and a method of use, which can be quickly installed, flexibly expanded and supports online maintenance, and is suitable for occasions such as data centers and industrial production lines that require dynamic load adjustment. Compared with the prior art, the present invention greatly reduces the contact resistance during expansion through the vertical connection of the L-shaped copper busbar and the double fixed structure. Summary of the invention

[0005] In order to solve the above problems, the present invention provides a load switching cabinet that is easy to manage and a method of use. Through the vertical connection structure of the upper and lower copper bars, the problems of increased impedance during capacity expansion and inability to perform online maintenance in the prior art are solved, and dynamic capacity expansion, rapid maintenance and efficient control can be achieved, thereby improving efficiency.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is: A load switching cabinet that is easy to manage, comprising a cabinet body, characterized in that: The cabinet contains a storage space, which is divided into a first area, a second area and a third area from top to bottom along the height direction of the cabinet; A plurality of groups of mounting structures, connected to the first area and arranged in sequence along the height direction, and each group of the mounting structures comprises at least two horizontal guide rails located at the same height; The module unit is configured to be pluggable at different heights within the first area via the horizontal guide rail; A control unit, which is disposed in the second area and electrically connected to the module units, and the control unit monitors the electrical status of each module unit in real time and dynamically adjusts the load capacity; A switching unit, arranged in the third area to provide a switching channel; Wherein, the module unit is integrated with the channel unit, the module units adjacent in the height direction or the horizontal direction can be electrically connected through the channel unit, and the module unit is electrically connected to the channel unit and can distribute and control the channel unit; Symmetrically distributed heat dissipation hole plate arrays are arranged on both sides of the upper part of the cabinet, and a plurality of blind plates are arranged on both sides of the cabinet.

[0007] Preferably, the two sides of the base plate are respectively slidably connected to the two horizontal guide rails of the mounting structure, the horizontal guide rails of the mounting structure are open at one end toward the front of the cabinet, the horizontal guide rails of the mounting structure are provided with a plurality of first fixing holes along the length direction, and the two sides of the base plate are provided with a plurality of second fixing holes, the first fixing holes and the second fixing holes can be connected by bolts, and the channel unit is installed on the base plate.

[0008] Preferably, the channel unit includes a load subunit and a guide channel, the module unit is used to realize the electrical connection and control of the load channel and the guide channel, the channel unit includes a relay, a large insulator, a small insulator, a load copper bar, a guide copper bar and upper and lower connecting copper bars, the channel unit includes a relay, a large insulator, a small insulator, a load copper bar), the guide copper bar and the upper and lower connecting copper bars can be detachably fixed to the bottom plate by screws, one load channel includes at least one relay, one large insulator, one small insulator and at least one load copper bar, one guide channel includes at least one relay, one large insulator, one small insulator and at least one guide copper bar; The two sides of the bottom plate respectively include two load channels and two guide channels, the load channel and the guide channel are connected by a horizontal copper busbar, the module units located in the adjacent upper and lower layers are connected to the load copper busbar or the guide copper busbar and the horizontal copper busbar through the upper and lower layer connecting copper busbars, the relay is electrically connected to the control unit, and the control unit realizes real-time distribution of load capacity by dynamically adjusting the on and off state of the relay, and the module unit is vertically connected to the horizontal copper busbar of the adjacent module unit through the upper and lower layer connecting copper busbars to form a composite current path.

[0009] Preferably, the upper and lower layer connecting copper bars are of L-shaped structure, comprising a horizontal portion and a vertical portion, one end of the horizontal portion of the upper and lower layer connecting copper bars being fixedly connected to the lower end of the vertical portion, the other end of the horizontal portion of the upper and lower layer connecting copper bars being connected to the transverse copper bars, the upper end of the vertical portion of the upper and lower layer connecting copper bars extending to the rear side of the module unit located on the upper layer, and being connected to the load copper bar or the guide copper bar in the module unit through a conductive bolt.

[0010] Preferably, the relay is provided with a phoenix tail terminal, the phoenix tail terminal is electrically connected to the control unit, and the phoenix tail terminal is a multi-contact elastic connection terminal for realizing a high-reliability plug-in connection between the relay and the control unit.

[0011] Preferably, an insulating sheet is also provided on the bottom surface of the bottom plate.

[0012] Preferably, the control unit includes a PCB board and a switching power supply, and the switching power supply is electrically connected to the PCB board, and the PCB board is electrically connected to both the module unit and the adapter unit.

[0013] Preferably, an operation indicator light is also provided on the surface of the cabinet, the operation indicator light is located at the lower side of the heat dissipation hole plate, and the operation indicator light is electrically connected to the PCB board.

[0014] Preferably, the adapter unit includes a adapter copper busbar and a mounting plate arranged in a vertical direction, the mounting plate is fixedly installed inside the cabinet, the adapter copper busbar is installed on the mounting plate, there are multiple mounting plates, there are multiple adapter copper busbars arranged along the horizontal direction of the mounting plate, the adapter copper busbar is provided with multiple interfaces along the length direction, the adapter copper busbar is connected to the external device through the interface, and supports parallel access of multi-channel loads.

[0015] Also included is a method for using a load switching cabinet suitable for easy management, comprising the following steps: After determining that a number of module units are installed in place, the control unit presets the corresponding total capacity; when multiple module units are additionally stacked, the vertical portion of the upper and lower connecting copper bars is connected to the horizontal copper bar of the upper layer through conductive bolts to form an extended current path; by identifying the newly added module units, the current total capacity is determined based on the rated current of the newly added module units; and / or When it is read that the relay of any module unit is in a fault state, the operation indicator light automatically turns red to alarm.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. The highly layered modular design is adopted. Combined with the installation structure, the module unit can realize drawer-style hot-swappable operation and maintenance. The upper module unit can realize blind plug-in expansion through plug-in connection, support online live operation, and improve expansion efficiency; 2. Reduce the volume through modular stacking (non-independent cabinets) to meet the needs of high power density scenarios; 3. Three-dimensional channel topology network, the horizontal channel unit realizes the parallel connection of the same-layer channels, the vertical channel unit completes the energy transmission between layers, the double-layer copper bus connection structure (load + guide dual channel) builds redundant paths, and the dynamic configuration capability of channel capacity is improved. At the same time, the vertical copper bus is arranged in front and behind to reduce the interference of adjacent channels; 4. The control unit, switching unit and multiple module units are partitioned in the height direction to achieve heat and point transfer. The heat is from bottom to top, which can achieve heat optimization and avoid the heat generation of the module affecting the control unit and switching; 5. The bottom setting of the transfer unit can realize the forced bottom cable entry, eliminate the side / top openings of the cabinet, and improve the protection level. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the first three-dimensional structure of the present invention.

[0018] Figure 2 It is a schematic diagram of the second three-dimensional structure of the present invention.

[0019] Figure 3 It is a schematic diagram of the local three-dimensional structure of the present invention.

[0020] Figure 4 It is a schematic diagram of the three-dimensional structure of the module unit of the present invention.

[0021] Figure 5 It is a schematic diagram of a partial three-dimensional structure of a module unit of the present invention.

[0022] Figure 6 It is a schematic diagram of the split three-dimensional structure of the module unit of the present invention.

[0023] Figure 7It is a schematic diagram of the three-dimensional structure of the control unit and the switching unit of the present invention.

[0024] Figure 8 It is a schematic diagram of the third three-dimensional structure of the present invention.

[0025] In the attached figure: 1. cabinet; A1. first area; A2. second area; A3. third area; 11. mounting structure; 21. bottom plate; 22. relay; 23. large insulator; 24. small insulator; 25. load copper busbar; 26. guide copper busbar; 27. upper and lower connecting copper busbar; 28. horizontal copper busbar; 29. ​​phoenix tail terminal; 3. control unit; 41. transfer copper busbar; 42. mounting plate; 43. interface; 5. heat dissipation hole plate; 6. blind plate; 7. operation indicator light. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] The technical solution of the present invention is further described in detail below through specific embodiments and in conjunction with the accompanying drawings: Embodiment 1: A load switching cabinet that is easy to manage and a method of using the same, such as Figure 1-8 As shown, it includes a cabinet 1, wherein the cabinet 1 has a storage space A, and the storage space A is divided into a first area A1, a second area A2 and a third area A3 from top to bottom along the height direction of the cabinet 1; A plurality of groups of mounting structures 11, connected to the first area A1 and arranged in sequence along the height direction, and each group of the mounting structures 11 includes at least two horizontal guide rails located at the same height; The module unit is configured to be pluggable at different heights in the first area A1 through the horizontal guide rail; A control unit 3, which is disposed in the second area A2 and electrically connected to the module units, and the control unit 3 monitors the electrical status of each module unit in real time and dynamically adjusts the load capacity; A switching unit, disposed in the third area A3 to provide a switching channel; Wherein, the module unit is integrated with the channel unit, the module units adjacent in the height direction or the horizontal direction can be electrically connected through the channel unit, and the module unit is electrically connected to the channel unit and can distribute and control the channel unit; A symmetrically distributed array of heat dissipation holes 5 is provided on both sides of the upper part of the cabinet, and a plurality of blind plates 6 is provided on both sides of the cabinet.

[0028] The two sides of the base plate 21 are respectively slidably connected to the two horizontal guide rails of the mounting structure 11. The horizontal guide rails of the mounting structure 11 are open toward one end in front of the cabinet 1. The horizontal guide rails of the mounting structure 11 are provided with a plurality of first fixing holes along the length direction. The two sides of the base plate 21 are provided with a plurality of second fixing holes. The first fixing holes and the second fixing holes can be connected by bolts to facilitate the disassembly and installation of the mounting structure 11 and the base plate 21. The channel unit is installed on the base plate 21.

[0029] The channel unit includes a load subunit and a guide channel, and the module unit is used to realize the electrical connection and control of the load channel and the guide channel. The channel unit includes a relay 22, a large insulator 23, a small insulator 24, a load copper busbar 25, a guide copper busbar 26, and upper and lower connecting copper busbars 27. The channel unit includes a relay 22, a large insulator 23, a small insulator 24, a load copper busbar 25, and the guide copper busbar 26 and the upper and lower connecting copper busbars 27 can be detachably fixed on the bottom plate 21 by screws. One of the load channels includes at least one of the relays 22, one of the large insulators 23, one of the small insulators 24, and at least one of the load copper busbars 25. One of the guide channels includes at least one of the relays 22, one of the large insulators 23, one of the small insulators 24, and At least one guide copper bar 26, each component is horizontally fixed on the base plate 21 by screws to achieve a compact layout; the base plate 21 includes two load channels and two guide channels on both sides, and the load channel and the guide channel are connected by a transverse copper bar 28. The module units located in the adjacent upper and lower layers are connected to the load copper bar 25 or the guide copper bar 26 and the transverse copper bar 28 through the upper and lower layer connecting copper bars 27. The relay 22 is electrically connected to the control unit 3, and the control unit 3 realizes real-time distribution of load capacity by dynamically adjusting the on and off state of the relay 22. The module unit is vertically connected to the transverse copper bar 28 of the adjacent module unit through the upper and lower layer connecting copper bars 27 to form a composite current path, ensuring uniform current distribution and reducing the risk of local overheating.

[0030] The upper and lower layer connecting copper bar 27 is an L-shaped structure, and the upper and lower layer connecting copper bar 27 includes a horizontal part and a vertical part. One end of the horizontal part of the upper and lower layer connecting copper bar 27 is fixedly connected to the lower end of the vertical part, and the other end of the horizontal part of the upper and lower layer connecting copper bar 27 is connected to the transverse copper bar 28. The vertical connection structure of the upper and lower layer connecting copper bar 27 and the parallel design of the transverse copper bar 28 can realize low-impedance and high-reliability unit current transmission. The upper end of the vertical part of the upper and lower layer connecting copper bar 27 extends to the rear side of the module unit located on the upper layer, and is connected to the load copper bar 25 or the guide copper bar 26 in the module unit through a conductive bolt. This design simplifies the vertical current transmission path, reduces impedance, and supports module stacking and expansion.

[0031] The relay 22 is provided with a phoenix tail terminal 29, which is electrically connected to the control unit 3. The phoenix tail terminal 29 is a multi-contact elastic connection terminal for realizing a high-reliability plug-in connection between the relay 22 and the control unit 3. The control unit 3 and the module unit are switched through the phoenix tail terminal 29 to make the circuit neat and clean.

[0032] An insulating sheet is also provided on the bottom surface of the bottom plate 21 to prevent the bottom plate 21 from directly contacting the metal parts of the cabinet 1 , thereby improving electrical safety.

[0033] The control unit 3 includes a PCB board and a switching power supply, and the switching power supply is electrically connected to the PCB board, and the PCB board is electrically connected to the module unit and the adapter unit. After receiving external instructions, the PCB board controls the on and off state of the relay 22 in real time, and dynamically adjusts the channel capacity and quantity to adapt to different load requirements.

[0034] When all module units are working normally, the rated current of the module unit is 100A. When installing, they need to be stacked in order from bottom to top, and the initial capacity is set to 400A through the control unit 3. When adding a new module, the path is automatically expanded by connecting the copper bus 27 on the upper and lower layers, and the total capacity is increased to 500A. The rated current of the module unit can be expanded to 200A, which is suitable for high-voltage load scenarios in data centers. The control unit 3 will monitor all module units in real time. The control unit 3 dynamically adjusts the on-off frequency of the relay 22 by real-time monitoring of the temperature rise and current fluctuation of the module unit to avoid local overheating. The base plate 21 of the module unit is embedded in the horizontal guide rail of the mounting structure 11 on both sides to slide, and is fixed to the first fixing hole of the horizontal guide rail and the second fixing hole of the base plate by bolts to achieve rapid installation and locking of the module unit. After vibration testing (frequency 10-200Hz, acceleration 5G), the displacement of the module unit under the double fixing structure is less than 0.1mm, ensuring that the module unit can operate stably in a vibration environment. Since the front end of the horizontal guide rail is open, it supports the module unit The unit is pulled horizontally from the front of the cabinet. When one of the module units fails, the staff disassembles the corresponding blind plate 6, then pulls the module unit where the fault is located, pulls out the bottom plate 21 from the horizontal guide rails on both sides of the mounting structure 11, removes the bolts between the first fixing hole and the second fixing hole, repairs and replaces the faulty module unit, and at the same time, other module units are powered normally. After the maintenance of the module unit is completed, the staff reinstalls the bottom plate 21 on the mounting structure 11. During installation, it is necessary to ensure that the first fixing hole of the horizontal guide rail is aligned with the second fixing hole of the bottom plate 21. The bolt tightening torque is 5-8N·m, and then the replaced module unit is pushed back into the cabinet 1, and the blind plate 6 is reinstalled. Experiments show that the composite current path design of the present invention reduces the contact resistance to 70% of the traditional solution, and the module replacement time is shortened from 30 minutes to 5 minutes. Therefore, there is no need to disassemble other module units during maintenance, and during the fault repair process, the power supply system of other module units is assisted to supply power normally, so that uninterrupted maintenance is achieved, and the maintenance safety of the staff can be improved.

[0035] Embodiment 2: Based on embodiment 1, Figure 1-7 As shown, an operation indicator light 7 is also provided on the surface of the cabinet 1, and the operation indicator light 7 is located at the lower side of the heat dissipation hole plate 5. The operation indicator light 7 is electrically connected to the PCB board. The PCB board adjusts the on-off cycle of the relay 22 in real time through the PID algorithm based on the current signal collected by the Hall sensor.

[0036] The adapter unit includes an adapter copper busbar 41 and a mounting plate 42 arranged along the vertical direction. The mounting plate 42 is fixedly installed inside the cabinet 1. There are multiple mounting plates 42. The adapter copper busbar 41 is installed on the mounting plate 42. There are multiple adapter copper busbars 41 arranged along the horizontal direction of the mounting plate. The adapter copper busbar 41 is designed vertically. The adapter copper busbar 41 is provided with multiple interfaces 43 along the length direction to adapt to different cable specifications, support external device expansion connection, and improve system compatibility.

[0037] The control unit 3 collects the status signal of the relay 22 through the tail terminal 29. When a fault is detected, the fault module is automatically cut off and the operation indicator light 7 is triggered to alarm. The control unit 3 will light up the operation indicator light 7 and remind the staff to quickly locate the fault.

[0038] The transfer unit is located at the lower side of the cabinet 1, and is mainly used to connect the load or guide the transfer copper bus 41 of each channel to avoid line confusion and facilitate cable access; while meeting electrical safety requirements, the transfer copper bus 41 is arranged one front and one back, which can optimize the problem of limited number of connection channels.

[0039] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A load switching cabinet that is easy to manage, comprising a cabinet body (1), characterized in that: The cabinet (1) contains a storage space (A), and the storage space (A) is divided into a first area (A1), a second area (A2), and a third area (A3) in sequence from top to bottom along the height direction of the cabinet (1); A plurality of groups of mounting structures (11), connected to the first area (A1) and arranged in sequence along the height direction, and each group of the mounting structures (11) comprises at least two horizontal guide rails located at the same height; The module unit is configured to be pluggable at different heights in the first area (A1) via the horizontal guide rail; A control unit (3) disposed in the second area (A2) and electrically connected to the module unit; A switching unit, arranged in the third area (A3) to provide a switching channel; Wherein, the module unit is integrated with the channel unit, the module units adjacent in the height direction or the horizontal direction can be electrically connected through the channel unit, and the module unit is electrically connected to the channel unit and can distribute and control the channel unit; A symmetrically distributed array of heat dissipation holes (5) is provided on both sides of the upper part of the cabinet (1), and a plurality of blind plates (6) are provided on both sides of the cabinet.

2. The load switching cabinet that is easy to manage according to claim 1 is characterized in that: The two sides of the bottom plate (21) are respectively slidably connected to the two horizontal guide rails of the mounting structure (11); the horizontal guide rail of the mounting structure (11) is open at one end facing the front of the cabinet (1); the horizontal guide rail of the mounting structure (11) is provided with a plurality of first fixing holes along the length direction; the two sides of the bottom plate (21) are provided with a plurality of second fixing holes; the first fixing holes and the second fixing holes can be connected by bolts; and the channel unit is mounted on the bottom plate (21).

3. The load switching cabinet that is easy to manage according to claim 2 is characterized in that: The channel unit comprises a load subunit and a guide channel, the module unit is used to realize electrical connection and control between the load channel and the guide channel, the channel unit comprises a relay (22), a large insulator (23), a small insulator (24), a load copper busbar (25), a guide copper busbar (26), and upper and lower connecting copper busbars (27), the channel unit comprises a relay (22), a large insulator (23), a small insulator (24), a load copper busbar (25), the guide copper busbar (26), and upper and lower connecting copper busbars (27), all of which can be detachably fixed to the bottom plate (21) by screws, one load channel comprises at least one relay (22), one large insulator (23), one small insulator (24), and at least one load copper busbar (25), and one guide channel comprises at least one relay (22), one large insulator (23), one small insulator (24), and at least one guide copper busbar (26); The bottom plate (21) comprises two load channels and two guide channels on both sides, respectively. The load channels and the guide channels are connected via a transverse copper busbar (28). The module units located at adjacent upper and lower layers are connected to the load copper busbar (25) or the guide copper busbar (26) and the transverse copper busbar (28) via upper and lower layer connecting copper busbars (27). The relay (22) is electrically connected to the control unit (3). The control unit (3) achieves real-time distribution of load capacity by dynamically adjusting the on / off state of the relay (22). The module units are vertically connected to the transverse copper busbar (28) of adjacent module units via the upper and lower layer connecting copper busbars (27) to form a composite current path.

4. The load switching cabinet that is easy to manage according to claim 3 is characterized in that: The upper and lower layer connecting copper bar (27) is an L-shaped structure, and the upper and lower layer connecting copper bar (27) comprises a horizontal portion and a vertical portion, one end of the horizontal portion of the upper and lower layer connecting copper bar (27) is fixedly connected to the lower end of the vertical portion, the other end of the horizontal portion of the upper and lower layer connecting copper bar (27) is connected to the transverse copper bar (28), and the upper end of the vertical portion of the upper and lower layer connecting copper bar (27) extends to the rear side of the module unit located at the upper layer, and is connected to the load copper bar (25) or the guide copper bar (26) in the module unit through a conductive bolt.

5. The load switching cabinet that is easy to manage according to claim 2 is characterized in that: The relay (22) is provided with a phoenix tail terminal (29), the phoenix tail terminal (29) is electrically connected to the control unit (3), and the phoenix tail terminal (29) is a multi-contact elastic connection terminal used to achieve a high-reliability plug-in connection between the relay (22) and the control unit (3).

6. The load switching cabinet that is easy to manage according to claim 2 is characterized in that: An insulating sheet is also provided on the bottom surface of the bottom plate (21).

7. The load switching cabinet that is easy to manage according to claim 1 is characterized in that: The control unit (3) comprises a PCB board and a switching power supply, wherein the switching power supply is electrically connected to the PCB board, and the PCB board is electrically connected to both the module unit and the switching unit.

8. The load switching cabinet that is easy to manage according to claim 7 is characterized in that: An operating indicator light (7) is also provided on the surface of the cabinet (1), the operating indicator light (7) is located at the lower side of the heat dissipation hole plate (5), and the operating indicator light (7) is electrically connected to the PCB board.

9. The load switching cabinet that is easy to manage according to claim 1 is characterized in that: The adapter unit comprises an adapter copper busbar (41) and a mounting plate (42) arranged in a vertical direction. The mounting plate (42) is fixedly mounted inside the cabinet (1). A plurality of the mounting plates (42) are provided. The adapter copper busbar (41) is mounted on the mounting plate (42). A plurality of the adapter copper busbar (41) are provided in a horizontal direction of the mounting plate (42). The adapter copper busbar (41) is provided with a plurality of interfaces (43) along a length direction. The adapter copper busbar (41) is connected to an external device via the interfaces (43) to support parallel access of multi-channel loads.

10. A method for using a load switching cabinet that is easy to manage according to any one of claims 1 to 9, characterized in that: The following steps are involved: After determining that a number of module units are installed in place, the control unit (3) presets a corresponding total capacity; when a plurality of additional module units are stacked, the vertical portion of the upper and lower connecting copper bars (27) is connected to the upper horizontal copper bar (28) through conductive bolts to form an extended current path; by identifying the newly added module units, the current total capacity is determined based on the rated current of the newly added module units; and / or When it is read that the relay of any of the module units is in a fault state, the operation indicator light (7) automatically turns red to alarm.

Images