Electrical control cabinet

Abstract

The embodiment of the utility model provides an electrical control cabinet. A cabinet body of the electrical control cabinet comprises a containing cavity and an opening, and the opening is formed in one side of the cabinet body and communicated with the containing cavity. And the plurality of junction boxes are arranged in the accommodating cavity in parallel. The plurality of groups of motor starters are coupled to the cabinet body at the opening in a drawable manner, and each group of motor starters is electrically connected with a corresponding junction box in the plurality of junction boxes. The plurality of power supply modules are arranged in the accommodating cavity and are arranged corresponding to the plurality of junction boxes. The power supply input ends of the plurality of power supply modules are suitable for being electrically connected with an external power supply, and the first direct current output end and the second direct current output end of each power supply module are electrically connected with the corresponding junction box so as to supply power to the corresponding group of motor starters through the junction box. By means of the arrangement, the power module does not need to occupy the space in the motor starter, and the size of the motor starter can be reduced. In addition, each power supply module supplies power to one group of motor starters at the same time, so that the efficiency of the power supply module can be improved.

Description

Technical Field

[0001] The embodiments of this disclosure generally relate to the field of electrical equipment, and more particularly to an electrical control cabinet. Background Technology

[0002] Electrical control cabinets are widely used in motor control, automation systems, power distribution, and other electrical equipment requiring centralized management and protection. Taking motor control cabinets as an example, they are used for precise control, monitoring, and protection of motors. Traditional motor control cabinets typically house components such as circuit breakers, contactors, thermal relays, or motor protectors within their drawers, with each drawer individually powered via terminal blocks. Motor protectors come in two models: 220V AC and 24V DC, depending on the control power supply. The former has a relatively higher failure rate due to interference from AC systems. In some conventional electrical control cabinets, drawer-type modules can be used to integrate traditional components, but the control power supply still uses the original layout, occupying a large space, and the individual starter power is low, resulting in low system conversion efficiency. Furthermore, each starter must cope with interference from the AC power grid, leading to an increase in system-level electromagnetic radiation due to the superposition effect. Utility Model Content

[0003] The purpose of embodiments of this disclosure is to provide an electrical control cabinet that at least partially solves the above-mentioned problems and other potential problems.

[0004] In a first aspect of this disclosure, an electrical control cabinet is provided. The electrical control cabinet includes: a cabinet body including a receiving cavity and an opening, the opening being disposed on one side of the cabinet body and communicating with the receiving cavity; a plurality of junction boxes arranged side-by-side within the receiving cavity and coupled to the cabinet body; a plurality of motor starters retractably coupled to the cabinet body at the opening, each set of motor starters being electrically connected to a corresponding junction box among the plurality of junction boxes; and a plurality of power modules disposed within the receiving cavity and corresponding to the plurality of junction boxes, each power module including a power input terminal, a first DC output terminal, and a second DC output terminal, the power input terminal of the plurality of power modules being adapted to be electrically connected to an external power source, and the first DC output terminal and the second DC output terminal of each power module being electrically connected to a corresponding junction box to supply power to a corresponding set of motor starters via the junction box.

[0005] In some embodiments, the electrical control cabinet further includes: a first busbar disposed within a receiving cavity; and a second busbar disposed within the receiving cavity and electrically connected to the first busbar and a plurality of junction boxes.

[0006] In some embodiments, each group of motor starters includes multiple motor starters, and each motor starter includes: a control circuit electrically connected to a first DC output terminal; an isolating switch including an electric operating mechanism and a main switch, the electric operating mechanism being electrically connected to a second DC output terminal and the control circuit, the main switch being electrically connected to a junction box for connection to a second busbar via the junction box; a drive circuit electrically connected to the control circuit; and a solid-state switch coupled to the drive circuit.

[0007] In some embodiments, the power input terminals of the multiple power modules are electrically connected to the first busbar, a first circuit breaker is provided between the first busbar and the multiple power modules, and a second circuit breaker is provided between the multiple power modules and the external power source.

[0008] In some embodiments, the external power source includes an uninterruptible power supply (UPS).

[0009] In some embodiments, the power module includes: an input protection circuit including a power input terminal; an electromagnetic compatibility filter circuit electrically connected to the input protection circuit; a rectifier circuit electrically connected to the electromagnetic compatibility filter circuit; and an anti-power fluctuation unit electrically connected to the rectifier circuit, wherein a second DC output terminal is disposed between the rectifier circuit and the anti-power fluctuation unit, and a first DC output terminal is disposed on the anti-power fluctuation unit.

[0010] In some embodiments, the anti-power fluctuation unit includes: a boost circuit electrically connected to a rectifier circuit; and a buck circuit electrically connected to the boost circuit, wherein a first DC output terminal is disposed on the buck circuit.

[0011] In some embodiments, each motor starter further includes an environmental detection component electrically connected to the control circuitry.

[0012] In some embodiments, the electrical control cabinet further includes a communication management unit electrically connected to the control circuits of multiple sets of motor starters.

[0013] In some embodiments, the communication management unit includes two redundant communication managers.

[0014] In embodiments of this disclosure, the electrical control cabinet includes a cabinet body, multiple junction boxes, multiple motor starters, and multiple power modules. The cabinet body includes a receiving cavity and an opening, the opening being located on one side of the cabinet body and communicating with the receiving cavity. Multiple junction boxes are arranged side-by-side within the receiving cavity and coupled to the cabinet body. Multiple sets of motor starters are retractably coupled to the cabinet body at the opening, each set of motor starters being electrically connected to a corresponding junction box among the multiple junction boxes. Multiple power modules are disposed within the receiving cavity and corresponding to the multiple junction boxes. Each power module includes a power input terminal, a first DC output terminal, and a second DC output terminal. The power input terminal of the multiple power modules is adapted to be electrically connected to an external power source, and the first DC output terminal and second DC output terminal of each power module are electrically connected to the corresponding junction box to supply power to the corresponding set of motor starters via the junction box. Using this arrangement, the power modules do not need to occupy space within the motor starters, reducing the size of the motor starters and thus increasing the installation density of the motor starters. Each power module supplies power to a group of motor starters simultaneously, which improves the efficiency of the power module. Furthermore, the power module can provide DC power to the motor starters, reducing interference from the AC power grid.

[0015] It should be understood that the content described in this section is not intended to limit the key or essential features of the embodiments of this disclosure, nor is it intended to restrict the scope of this disclosure. Other features of this disclosure will become readily apparent from the following description. Attached Figure Description

[0016] The above and other features, advantages, and aspects of the embodiments of this disclosure will become more apparent from the accompanying drawings and the following detailed description. In the drawings, the same or similar reference numerals denote the same or similar elements, wherein:

[0017] Figure 1 A perspective view of an electrical control cabinet according to an embodiment of the present disclosure is shown;

[0018] Figure 2 A schematic diagram of the circuit system within an electrical control cabinet according to an embodiment of the present disclosure is shown;

[0019] Figure 3 A schematic diagram of a power module according to an embodiment of the present disclosure is shown;

[0020] Figure 4 A schematic diagram of a motor starter according to an embodiment of the present disclosure is shown; and

[0021] Figure 5 A schematic diagram of an electrical system according to an embodiment of the present disclosure is shown.

[0022] Explanation of reference numerals in the attached figures:

[0023] 100. Cabinet body; 10. Opening;

[0024] 20. Junction box;

[0025] 30. First busbar; 31. First circuit breaker; 32. Second circuit breaker; 33. Second busbar;

[0026] 40. Motor starter; 41. Solid-state switch; 42. Control circuit; 43. Disconnect switch; 431. Electric operating mechanism; 432. Main switch; 44. Drive circuit;

[0027] 50. Power supply module; 51. First DC output terminal; 52. Second DC output terminal; 53. Power input terminal; 54. Input protection circuit; 55. Electromagnetic compatibility filter circuit; 56. Rectifier circuit; 57. Anti-voltage fluctuation unit; 571. Boost circuit; 572. Buck circuit;

[0028] 60. External power supply;

[0029] 70. Communication Management Unit; 71. Communication Manager;

[0030] 80. Electric motor. Detailed Implementation

[0031] Preferred embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While preferred embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present disclosure will be thorough and complete, and will fully convey the scope of the present disclosure to those skilled in the art.

[0032] The term "comprising" and its variations as used herein signify open inclusion, i.e., "including but not limited to". Unless otherwise stated, the term "or" means "and / or". The term "based on" means "at least partially based on". The terms "one example embodiment" and "one embodiment" mean "at least one example embodiment". The term "another embodiment" means "at least one additional embodiment". The terms "first", "second", etc., may refer to different or the same objects.

[0033] As mentioned above, traditional components can be integrated into drawer-type modules within some conventional electrical control cabinets. However, the control power supply still uses the original layout, occupying a large space, and the power of individual starters is low, resulting in low system conversion efficiency. In addition, each starter must also cope with interference from the AC power grid, causing the system-level electromagnetic radiation to be amplified due to the superposition effect.

[0034] This disclosure provides an electrical control cabinet. In this cabinet, multiple power modules are housed within a receiving cavity and corresponding to multiple junction boxes. Each power module includes a power input terminal, a first DC output terminal, and a second DC output terminal. The power input terminals of the multiple power modules are adapted to be electrically connected to an external power source, and the first and second DC output terminals of each power module are electrically connected to the corresponding junction box to supply power to a corresponding group of motor starters via the junction box. With this arrangement, the power modules do not need to occupy space within the motor starters, reducing the size of the motor starters and thus increasing their installation density. Each power module simultaneously supplies power to a group of motor starters, improving the efficiency of the power modules. Furthermore, the power modules can provide DC power to the motor starters, reducing interference from the AC power grid. The following will describe... Figures 1 to 5 The principles of this disclosure will be described in detail below.

[0035] like Figure 1 and Figure 2 As shown, the electrical control cabinet described herein generally includes a cabinet 100, multiple junction boxes 20, multiple sets of motor starters 40, and multiple power supply modules 50.

[0036] The cabinet 100 is the main frame of the electrical control cabinet, and its interior has a receiving cavity for installing and protecting all electrical components. An opening 10 is provided on one side of the cabinet 100, for example, an opening 10 is provided on the front side of the cabinet 100, and this opening 10 communicates with the receiving cavity.

[0037] Inside the housing, multiple junction boxes 20 are arranged side by side, for example, in multiple layers from low to high, and these junction boxes 20 are connected to the cabinet 100. The junction boxes 20 can effectively distribute and manage power or signals from different sources, ensuring that power transmission and signal exchange can be performed between various electrical devices.

[0038] In some embodiments, the junction box 20 may adopt a modular design. In this way, the junction box 20 can be installed inside the cabinet 100 and can be expanded or replaced as needed, thereby improving the flexibility and reliability of the entire system.

[0039] like Figure 1 As shown, multiple sets of motor starters 40 are retractably coupled to the cabinet 100 at the opening 10. Each set of motor starters 40 is independent and electrically connected to a corresponding junction box 20 among multiple junction boxes 20 within the receiving cavity, thereby ensuring the distribution and transmission of power or signals. Using this arrangement, operators can remove a specific set of motor starters 40 from the cabinet 100 for inspection or replacement without stopping the system, and without affecting the normal operation of other modules.

[0040] As an example, such as Figure 1 As shown, the electrical control cabinet may include eight sets of motor starters 40, each set of motor starters 40 being located on the same floor. Each set of motor starters 40 may include eight motor starters 40, and these eight motor starters 40 are electrically connected to the junction box 20 on the same floor.

[0041] It should be noted that the figures, values, etc., mentioned above and elsewhere in this disclosure are exemplary and are not intended to limit the scope of this disclosure in any way. Any other suitable figures or values ​​are possible.

[0042] like Figure 2 and Figure 3 As shown, the electrical control cabinet also includes multiple power supply modules 50. The power supply modules 50 are housed within the cabinet 100 and are correspondingly arranged with multiple junction boxes 20. Each power supply module 50 has a power input terminal 53, a first DC output terminal 51, and a second DC output terminal 52. The power supply module 50 can convert and distribute power resources.

[0043] The power input terminal 53 of the power module 50 can be electrically connected to an external power supply 60 to power the control circuit 42 inside the electrical control cabinet. When the external power supply 60 is connected, the power module 50 can convert the input AC power into DC power, which is then output through the first DC output terminal 51 and the second DC output terminal 52. The first DC output terminal 51 and the second DC output terminal 52 can meet the voltage or current requirements of different electrical devices.

[0044] As an example, the first DC output terminal 51 outputs a 24V DC voltage, and the second DC output terminal 52 outputs a 220V DC voltage. In some other embodiments, the DC voltages output by the first DC output terminal 51 and the second DC output terminal 52 can be set as needed.

[0045] The first DC output terminal 51 and the second DC output terminal 52 of each power module 50 are electrically connected to the corresponding junction box 20, and power can be directly transmitted to the required motor starter 40. The junction box 20 acts as a bridge here, which can distribute the power provided by the power module 50 to the multiple motor starters 40 of each group of motor starters 40.

[0046] As an example, a conductive busbar can be installed inside the junction box 20 to distribute DC power to multiple motor starters 40 on the same floor.

[0047] As another example, wires can be installed inside the junction box 20 to distribute DC power to multiple motor starters 40 on the same floor.

[0048] With this arrangement, the power supply module 50 does not need to occupy space within the motor starter 40, thus reducing the size of the motor starter 40 and increasing its installation density within the cabinet 100. Simultaneously, since the power supply module 50 can centrally power multiple motor starters 40, this not only improves the operating efficiency of the power supply module 50 but also reduces energy losses caused by distributed power supply. Furthermore, the power supply module 50 can provide DC power to the motor starters 40, reducing interference from the AC power grid to the motor starters 41.

[0049] In some embodiments, such as Figure 2 As shown, the electrical control cabinet also includes a first busbar 30 and a second busbar 33. The first busbar 30 is typically made of copper or aluminum, possessing good electrical conductivity and mechanical strength. In the electrical control cabinet, the first busbar 30 is housed inside the receiving cavity and can serve as part of the main circuit, used to introduce power from external power supply systems or other electrical control cabinets into this cabinet. The second busbar 33 is electrically connected to the first busbar 30 and multiple junction boxes 20. The second busbar 33 can receive power from the first busbar 30 and distribute it to each junction box 20, thus ensuring that each junction box 20 receives the required electrical energy.

[0050] Using this arrangement, the first busbar 30 and the second busbar 33 are used together to form a complete power transmission link inside the electrical control cabinet. The first busbar 30, as the backbone, such as a horizontal busbar, is responsible for transmitting large currents, while the second busbar 33, as a branch, such as a vertical busbar, is responsible for distributing power to various terminal devices, such as the motor 80.

[0051] In some embodiments, such as Figure 1 and Figure 4 As shown, in the electrical control cabinet, each group of motor starters 40 contains multiple independent motor starters 40. Each motor starter 40 integrates various electrical components such as a control circuit 42, a disconnect switch 43, a drive circuit 44, and a solid-state switch 41, thereby forming a fully functional motor control system.

[0052] like Figure 4 As shown, the control circuit 42 is electrically connected to the first DC output terminal 51 of the power module 50. The power module 50 can provide a stable DC power supply to the control circuit 42 through the first DC output terminal 51, so that the control circuit 42 can operate normally.

[0053] The disconnector switch 43 includes an electric operating mechanism 431 and a main switch 432. The electric operating mechanism 431 is electrically connected to the second DC output terminal 52 of the power supply module 50 and the control circuit 42. The power supply module 50 not only supplies power to the drive unit of the electric operating mechanism 431, but also controls the operation of the electric operating mechanism 431 through the control circuit 42. The control circuit 42 can switch the electric operating mechanism 431 between the closed and open positions according to preset logic or external commands.

[0054] The main switch 432 is electrically connected to the junction box 20, and further connected to the second busbar 33 through the junction box 20, forming a power transmission path from the first busbar 30 to the final load. The electric operating mechanism 431 is coupled to the main switch 432 and can control the on / off state of the main switch 432.

[0055] The drive circuit 44 is electrically connected to the control circuit 42, and can receive signals from the control circuit 42 and trigger corresponding actions based on these signals. The solid-state switch 41 is coupled to the drive circuit 44 and electrically connected to the motor 80.

[0056] Using this arrangement, the control circuit 42 can drive the state changes of the solid-state switch 41. After receiving the signal transmitted by the drive circuit 44, the solid-state switch 41 can quickly turn on or off, thereby controlling the start and stop of the motor 80 and other operations.

[0057] In some embodiments, such as Figure 2 As shown, the power input terminals 53 of the multiple power modules 50 can also be electrically connected to the first busbar 30, thereby obtaining power from the first busbar 30. To ensure the safety and controllability of the power supply, a first circuit breaker 31 is provided between the first busbar 30 and the multiple power modules 50. This first circuit breaker 31 can automatically disconnect the circuit when an abnormal situation is detected, preventing overload or short circuit faults and protecting the system from damage. In addition, a second circuit breaker 32 is provided between the power modules 50 and the external power supply 60. The second circuit breaker 32 can disconnect the circuit between the power modules 50 and the external power supply 60.

[0058] With this arrangement, the electrical control cabinet can form a dual power supply protection mechanism. The power module 50 can not only choose to draw power from the external power supply 60 or the first busbar 30, but also react quickly in the event of a problem in either power supply method, thereby ensuring the normal operation of the system.

[0059] In some embodiments, the external power supply 60 includes an uninterruptible power supply (UPS) system. An UPS can immediately switch to battery power mode in the event of a mains power failure or outage, providing a continuous and stable power supply to the electrical control cabinet and ensuring that the system is not affected by sudden power interruptions. By using an UPS, the electrical control cabinet can maintain the normal operation of critical equipment and avoid adverse consequences such as data loss, equipment damage, or production interruptions.

[0060] In some embodiments, such as Figure 3 As shown, the power supply module 50 includes an input protection circuit 54, an electromagnetic compatibility filter circuit 55, a rectifier circuit 56, and an anti-power fluctuation unit 57, etc.

[0061] The input protection circuit 54 is located at the front end of the power module 50 and includes a power input terminal 53. The input protection circuit 54 provides preliminary protection before power enters the power module 50, preventing damage to the internal circuitry from abnormal conditions in the external power grid (such as overvoltage, undervoltage, or short circuit).

[0062] The electromagnetic compatibility filter circuit 55 is electrically connected to the input protection circuit 54 to filter electromagnetic interference (EMI) and radio frequency interference (RFI) from the power grid, thereby purifying the input power and ensuring that subsequent circuits can receive high-quality power signals. The electromagnetic compatibility filter circuit 55 can improve the anti-interference capability and stability of the entire system.

[0063] The rectifier circuit 56 is electrically connected to the electromagnetic compatibility filter circuit 55. The rectifier circuit 56 converts the filtered alternating current into direct current, providing a stable foundation for subsequent power distribution and use. The rectifier circuit 56 ensures that the output direct current is smooth and stable.

[0064] The anti-voltage fluctuation unit 57 is electrically connected to the rectifier circuit 56. The anti-voltage fluctuation unit 57 can cope with transient voltage fluctuations (voltage dips) in the power grid and can provide backup power for a short time to maintain the normal operation of the system during power grid fluctuations. The second DC output terminal 52 is located between the rectifier circuit 56 and the anti-voltage fluctuation unit 57. A portion of the rectified DC power can be directly output from the second DC output terminal 52 to supply equipment that does not require additional anti-voltage fluctuation protection.

[0065] The first DC output terminal 51 is located on the anti-power fluctuation unit 57. Stable DC power processed by the anti-power fluctuation unit 57 is output from the first DC output terminal 51, thereby providing power to equipment with high requirements for power stability, such as control circuit 42 or electric operating mechanism 431.

[0066] In some embodiments, such as Figure 3As shown, the anti-voltage fluctuation unit 57 mainly consists of two parts: a boost circuit 571 and a buck circuit 572. The boost circuit 571 is directly connected to the rectifier circuit 56, which can boost the DC voltage output by the rectifier circuit 56 to a higher level, ensuring that the system can still obtain sufficient power support when the mains voltage drops or becomes unstable. Through the boost circuit 571, the power module 50 can compensate for voltage loss when the mains voltage is insufficient, thereby maintaining the stability of the output voltage.

[0067] Next, the buck circuit 572 is electrically connected to the boost circuit 571. The buck circuit 572 can adjust the high-voltage DC power boosted by the boost circuit 571 to an appropriate voltage level suitable for the system equipment. The first DC output terminal 51 is located on the buck circuit 572, and the regulated stable DC power will be output from the first DC output terminal 51.

[0068] With this arrangement, the anti-voltage fluctuation unit 57 can effectively cope with grid voltage fluctuations by combining the boost circuit 571 and the buck circuit 572, and can provide the system with high-quality DC power, thereby enhancing the overall reliability and performance of the electrical control cabinet.

[0069] In some embodiments, each motor starter 40 is also equipped with an environmental detection component. The environmental detection component is electrically connected to the control circuit 42 and can monitor environmental parameters inside the motor starter 40, such as temperature and operating current, to ensure that the motor starter 40 can always be in a normal working state.

[0070] During operation of the electrical control cabinet, the environmental monitoring components can collect environmental data in real time, providing crucial feedback information to the control circuit 42. This allows the control system to make corresponding adjustments based on the actual situation. For example, when excessively high temperatures are detected, the control circuit 42 can trigger a corresponding cooling mechanism or adjust the load to prevent overheating. When the operating current exceeds the normal range, the control circuit 42 can take measures to limit the current, preventing equipment overload or damage.

[0071] In some embodiments, such as Figure 1 As shown, the electrical control cabinet also includes a communication management unit 70. This communication management unit 70 is electrically connected to the control circuits 42 in multiple sets of motor starters 40. The communication management unit 70 can collect and process data from each motor starter 40, including but not limited to the status information of the motor 80 and the operating parameters of the control circuits 42, thereby monitoring the operation of the entire system in real time. Furthermore, the communication management unit 70 is also responsible for organizing and analyzing the collected information and transmitting this data to a higher-level control system or monitoring platform via standard communication protocols (such as Modbus, ProfiNet, etc.), enabling operators to remotely monitor and manage the various functions of the electrical control cabinet.

[0072] In some embodiments, such as Figure 1 As shown, the communication management unit 70 includes two redundant communication managers 71. The two communication managers 71 operate independently, with one acting as the primary manager responsible for daily data collection, processing, and transmission tasks, while the other remains in standby mode, ready to take over the functions of the primary manager at any time. If the primary manager fails or requires maintenance, the standby manager can seamlessly switch over and continue to perform communication management tasks, thus avoiding system interruptions due to single points of failure.

[0073] In some embodiments, such as Figure 5 As shown, multiple electrical control cabinets can be used together, and the first busbar 30 between the multiple electrical control cabinets is electrically connected, thus forming the main circuit.

[0074] The various embodiments of this disclosure have been described above. These descriptions are exemplary and not exhaustive, and are not limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or technical improvements to the embodiments in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. An electrical control cabinet, characterized in that, include: The cabinet (100) includes a receiving cavity and an opening (10), the opening (10) being disposed on one side of the cabinet (100) and communicating with the receiving cavity; Multiple junction boxes (20) are arranged side by side in the receiving cavity and coupled to the cabinet (100); Multiple sets of motor starters (40) are retractably coupled to the cabinet (100) at the opening (10), and each set of motor starters (40) is electrically connected to a corresponding junction box (20) among the multiple junction boxes (20); as well as Multiple power modules (50) are disposed within the receiving cavity and are correspondingly disposed with the multiple junction boxes (20). Each power module (50) includes a power input terminal (53), a first DC output terminal (51), and a second DC output terminal (52). The power input terminal (53) of the multiple power modules (50) is adapted to be electrically connected to an external power source (60). The first DC output terminal (51) and the second DC output terminal (52) of each power module (50) are electrically connected to the corresponding junction box (20) to supply power to a corresponding set of motor starters (40) via the junction box (20).

2. The electrical control cabinet according to claim 1, characterized in that, Also includes: The first busbar (30) is disposed within the receiving cavity; as well as The second busbar (33) is disposed in the receiving cavity and is electrically connected to the first busbar (30) and the plurality of junction boxes (20).

3. The electrical control cabinet according to claim 2, characterized in that, Each group of motor starters includes multiple motor starters, and each of the motor starters (40) includes: The control circuit (42) is electrically connected to the first DC output terminal (51); The disconnect switch (43) includes an electric operating mechanism (431) and a main switch (432). The electric operating mechanism (431) is electrically connected to the second DC output terminal (52) and the control circuit (42). The main switch (432) is electrically connected to the junction box (20) to be electrically connected to the second busbar (33) via the junction box (20). The drive circuit (44) is electrically connected to the control circuit (42); and A solid-state switch (41) is coupled to the drive circuit (44).

4. The electrical control cabinet according to claim 2, characterized in that, The power input terminal (53) of the plurality of power modules (50) is electrically connected to the first busbar (30), a first circuit breaker (31) is provided between the first busbar (30) and the plurality of power modules (50), and a second circuit breaker (32) is provided between the plurality of power modules (50) and the external power supply (60).

5. The electrical control cabinet according to any one of claims 1 to 4, characterized in that, The external power source (60) includes an uninterruptible power supply.

6. The electrical control cabinet according to any one of claims 1 to 4, characterized in that, The power module (50) includes: Input protection circuit (54), including the power input terminal (53); An electromagnetic compatibility filter circuit (55) is electrically connected to the input protection circuit (54); The rectifier circuit (56) is electrically connected to the electromagnetic compatibility filter circuit (55); and An anti-sloshing unit (57) is electrically connected to the rectifier circuit (56), the second DC output terminal (52) is disposed between the rectifier circuit (56) and the anti-sloshing unit (57), and the first DC output terminal (51) is disposed on the anti-sloshing unit (57).

7. The electrical control cabinet according to claim 6, characterized in that, The anti-power fluctuation unit (57) includes: The boost circuit (571) is electrically connected to the rectifier circuit (56); and A step-down circuit (572) is electrically connected to the step-up circuit (571), and the first DC output terminal (51) is disposed on the step-down circuit (572).

8. The electrical control cabinet according to claim 3, characterized in that, Each of the motor starters (40) also includes: The environmental detection component is electrically connected to the control circuit (42).

9. The electrical control cabinet according to claim 3, characterized in that, Also includes: The communication management unit (70) is electrically connected to the control circuit (42) of the multiple sets of motor starters (40).

10. The electrical control cabinet according to claim 9, characterized in that, The communication management unit (70) includes two redundant communication managers (71).

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