A high-voltage solid-state soft starter with built-in redundant control module

Abstract

This invention discloses a high-voltage solid-state soft starter device with a built-in redundant control module, relating to the field of soft starter technology. It includes a cabinet and a linkage control assembly, with a control compartment at the top of the cabinet. During use, when no power outage is required for maintenance, the female connector, thanks to the freely stretchable nature of its spring wire, can be pulled out of the equipment compartment along with the male connector. During maintenance, the electrical connection between the control board and the soft starter is maintained to achieve hot-swapping. When a power outage is required for maintenance, disconnecting the male connector from the female connector causes the soft starter to lose power and stop, achieving cold-swapping. This application, through the design of the plug-and-play maintenance assembly, allows operators to select between hot-swapping and cold-swapping maintenance methods by pulling a handle or pressing a push rod, depending on their actual needs. By maintaining power supply to the equipment during maintenance, downtime is reduced, allowing the production line to continue operating.

Description

Technical Field

[0001] This invention relates to the field of soft starter technology, specifically to a high-voltage solid-state soft starter device with a built-in redundant control module. Background Technology

[0002] Motor soft starters are advanced soft-start devices designed and manufactured using power electronics technology, microprocessor technology, and modern control theory. They effectively limit the starting current of AC motors and are widely used in loads such as fans, pumps, and compressors. They are an ideal replacement for traditional star / delta converters, autotransformers, and magnetic control soft starters. High-voltage solid-state soft starters achieve smooth starting of motors and mechanical loads by employing voltage reduction or frequency conversion technologies, reducing starting current. Conventional high-voltage solid-state soft starters use semi-controlled thyristors and AC-AC voltage regulation; their output voltage can be adjusted, but the frequency cannot. The starting torque of the motor is relatively small, while the starting current is relatively large, making it suitable for medium and light loads. The fully controlled intelligent high-voltage solid-state soft starter uses fully controlled power semiconductor devices IGBTs, AC-DC-AC voltage regulation and frequency regulation methods, and PWM inverters in series to superimpose high voltage output, realizing variable frequency and variable voltage high voltage output to supply the motor with variable frequency and variable voltage power. It generally consists of four parts: phase-shifting transformer, power unit, main control unit, and input / output. During the motor starting process, by gradually increasing the voltage and frequency, the starting current of the motor is kept at a low level, while ensuring sufficient starting torque, thereby reducing the impact on the power grid.

[0003] In existing technologies, maintenance of the control board of a soft starter often requires power outage and shutdown, i.e., cold plugging and unplugging. This means that the production line cannot continue to operate during the equipment downtime, resulting in losses. In addition, when the soft starter is used in a humid environment, an exhaust fan is needed to remove internal moisture to prevent leakage or short circuit accidents. However, the exhaust fan cannot maintain operation during power outage maintenance, causing external moisture and dust impurities to enter the cabinet and have adverse effects.

[0004] Therefore, in view of this, we have studied and improved the existing structure to address its shortcomings, and proposed a high-voltage solid-state soft starter with a built-in redundant control module. Summary of the Invention

[0005] The purpose of this invention is to provide a high-voltage solid-state soft starter with a built-in redundant control module to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a high-voltage solid-state soft starter with a built-in redundant control module, comprising a cabinet and a linkage control component. The top of the cabinet has a control compartment, and the linkage control component is fixedly installed on the side walls of the two cavities of the control compartment. The linkage control component includes a track, a lower slide groove, an upper slide rail, a side groove, a throat, a slide plate, a pull rope, a gate, and a guide roller. The bottom ends of the two tracks on opposite sides have lower slide grooves with their openings facing inward. The top of the two tracks on both sides has an upper slide rail with its openings at both ends. The side of the upper slide rail has a side groove along its length, and a throat is provided at one end of the upper slide rail near the inner wall of the control compartment cavity. A slide plate is slidably installed inside the upper slide rail, and the diameter of the slide plate is larger than the opening diameter of the throat. A pull rope is connected to the rear end of the slide plate, and a gate is connected to the end of the pull rope away from the slide plate. A guide roller is provided at the corner of the gate, and the guide roller is rotatably installed on the edge of the opening of the inner wall of the control compartment cavity via a bearing bracket.

[0007] Furthermore, a female plug is movably disposed in the middle of the inner wall of the control chamber, and an annular plate is integrally fixed to the outer edge of the female plug, and a spring wire is connected to the input end of the female plug.

[0008] Furthermore, a plug-in maintenance assembly is slidably connected inside the control chamber cavity. The plug-in maintenance assembly includes a control board tray and a male connector. The control board tray is embedded with a control board that integrates soft starter control components and power supply circuits. The control board tray is slidably installed inside the side rails by cooperating with the sliding groove. The end of the control board tray near the inner wall of the control chamber cavity is connected to a male connector, and the male connector achieves electrical connection between the control board and the soft starter by plugging into the female connector.

[0009] Furthermore, the plug-in maintenance assembly also includes a handle and a cross groove. The other end of the control board tray is fixedly equipped with a handle, and a cross groove is provided in the middle of the handle, with a spring piece inside the cross groove.

[0010] Furthermore, the plug-in maintenance assembly also includes a push rod and a pin. The push rod is slidably installed inside the cross groove and slides in the middle of the control panel tray. One end of the push rod abuts against the annular plate on the outer edge of the female plug, and the other end of the push rod is rotatably installed with a pin.

[0011] Furthermore, the plug-in maintenance assembly also includes a linkage rod and a rotating plate. The two sides of the root of the top rod are fixedly connected with a "U"-shaped linkage rod, and the linkage rod slides on both sides of the control panel tray. The two ends of the linkage rod are rotatably connected to the corresponding rotating plate.

[0012] Furthermore, the plug-in maintenance assembly also includes a pressure head and a flange. The pressure head is integrally fixed on the inner side of the rotating plate and abuts against the annular plate on the outer edge of the female plug. The flange is integrally fixed on the outer side of the rotating plate and abuts against the sliding plate in the upper slide rail.

[0013] Furthermore, an equipment compartment is provided at the bottom of the cabinet, and an exhaust fan is provided on the inner wall of the equipment compartment cavity, with the exhaust fan located inside the gate.

[0014] Furthermore, a support plate is fixed inside the equipment compartment, and a valve group is installed on one side of the support plate via a channel-shaped crossbeam, while a voltage transformer is installed on the other side of the support plate via a fuse bracket.

[0015] Furthermore, a vacuum contactor is provided on one side of the bottom of the equipment compartment, and the upper insulator of the vacuum contactor is mounted on the support plate. A row of current transformers is provided between the vacuum contactor and the valve group, and the current transformers are connected to the upper insulator of the vacuum contactor through a connecting bar.

[0016] This invention provides a high-voltage solid-state soft starter with a built-in redundant control module, which has the following advantages;

[0017] 1. During the use of this invention, when no power outage is required for maintenance, the female connector can be pulled out of the equipment compartment along with the male connector due to the free stretching characteristic of the spring wire. During maintenance, the electrical connection between the control board and the soft starter is maintained to achieve hot-swapping. When power outage is required for maintenance, the connection between the male connector and the female connector is disconnected, which causes the soft starter to lose power and stop, thus achieving cold-swapping. This application, through the setting of the plug-in maintenance component, allows the operator to select between hot-swapping or cold-swapping maintenance methods by pulling the handle or pressing the top rod according to the actual needs of the operator. By maintaining the power supply of the equipment during maintenance, downtime is reduced, allowing the production line to continue operating.

[0018] 2. In the use of this invention, the cold insertion and removal process is designed such that, on the one hand, the rotating plate flips as the user presses the top rod, releasing the pressure head at one end of the rotating plate from the outside of the female insert's ring plate; on the other hand, the flange at the other end of the rotating plate penetrates into the upper slide rail through the side groove and abuts against the sliding plate. As the control panel tray is pulled out from the tracks on both sides, the abutment between the flange at the other end of the rotating plate and the sliding plate causes the sliding plate to be pulled up synchronously by the pull rope, thereby blocking the connection channel between the exhaust fan and the cabinet cavity through the gate. Furthermore, the gate is prevented from returning to its original position by gravity through the folding pin and the locking with the edge of the control compartment opening. This application uses a redundant design that links the cold insertion and removal process with the opening and closing of the gate, so that even when the equipment is stopped and the exhaust fan stops operating, the connection channel between the exhaust fan and the cabinet cavity is sealed by the gate, ensuring the isolation of the cabinet's internal environment from the external environment and preventing the intrusion of dust and moisture during downtime. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall external structure of the device of the present invention;

[0020] Figure 2 This is a schematic diagram of the overall internal structure of the device of the present invention;

[0021] Figure 3 This is a schematic diagram of the hot-plugging state of the present invention;

[0022] Figure 4 This is a schematic diagram of the cold insertion / removal state of the present invention;

[0023] Figure 5 This is a schematic diagram of part of the structure of the device of the present invention;

[0024] Figure 6 This is a schematic diagram of the plug-in maintenance assembly structure of the present invention;

[0025] Figure 7 This is a schematic diagram of the linkage control component structure of the present invention.

[0026] In the diagram: 1. Cabinet; 2. Control compartment; 3. Female connector; 4. Ring plate; 5. Spring wire; 6. Linkage control assembly; 601. Track; 602. Lower slide groove; 603. Upper slide rail; 604. Side groove; 605. Throat; 606. Slide plate; 607. Pull rope; 608. Gate; 609. Guide roller; 7. Plug-in maintenance assembly; 701. Control panel tray; 702. Male connector; 703. Handle; 704. Cross groove; 705. Top rod; 706. Pin; 707. Linkage rod; 708. Turning plate; 709. Pressure head; 710. Flange; 8. Equipment compartment; 9. Exhaust fan; 10. Support plate; 11. Valve group; 12. Voltage transformer; 13. Vacuum contactor; 14. Current transformer. Detailed Implementation

[0027] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of the invention.

[0028] Please see Figures 1 to 6This invention provides a technical solution: a high-voltage solid-state soft starter with a built-in redundant control module, comprising a cabinet 1 and a linkage control assembly 6. A control compartment 2 is located at the top of the cabinet 1. A female connector 3 is movably disposed in the middle of the inner wall of the control compartment 2, and a ring plate 4 is integrally fixed to the outer edge of the female connector 3. A spring wire 5 is connected to the input end of the female connector 3. The linkage control assembly 6 is fixedly installed on the side walls of both sides of the control compartment 2. The linkage control assembly 6 includes a track 601, a lower slide groove 602, an upper slide rail 603, a side groove 604, a throat 605, a sliding plate 606, a pull rope 607, a gate 608, and a guide roller 609. Lower slide grooves 602 are formed on the opposite sides of the bottom ends of the two track 601s. The lower slide 602 has an opening facing inward. Upper slide rails 603 are provided at the top of both sides of the track 601, with openings at both ends. Side grooves 604 are provided along the length of the upper slide rails 603. A throat 605 is provided at one end of the upper slide rail 603 near the inner wall of the control chamber 2. A sliding plate 606 is slidably installed inside the upper slide rail 603, with a diameter larger than the opening diameter of the throat 605. A pull rope 607 is connected to the rear end of the sliding plate 606, and a gate 608 is connected to the end of the pull rope 607 away from the sliding plate 606. A guide roller 609 is provided at the corner of the gate 608, and the guide roller 609 is rotatably mounted on the edge of the opening on the inner wall of the control chamber 2 via a bearing bracket.

[0029] The specific operation is as follows: Since the exhaust fan 9 inside the equipment compartment 8 remains powered during hot-swapping, this application designs the hot-swapping process such that, on the one hand, the rotating plate 708 is tightened, causing its pressure head 709 to press tightly against the outer side of the annular plate 4 of the female connector 3; on the other hand, the flange 710 at the other end of the rotating plate 708 will not intrude into the side groove 604 connected to the side of the upper slide rail 603 and abut against the slide plate 606. This ensures that the inner side of the exhaust fan 9 is not sealed by the gate plate 608 during hot-swapping, and the moisture inside the cabinet 1 is exhausted through the continuous operation of the exhaust fan 9. During cold-swapping, the male connector 702 at the end of the control board disconnects its electrical connection with the female connector 3, causing the exhaust fan 9 to be de-energized. Therefore, this application designs the cold-swapping process such that, on the one hand, the rotating plate 708... During the process of the user pressing the top rod 705, the plate flips over, releasing the pressure head 709 at one end of the rotating plate 708 from the outside of the ring plate 4 of the female plug 3. On the other hand, the flange 710 at the other end of the rotating plate 708 enters the upper slide rail 603 through the side groove 604 and abuts against the slide plate 606. As the control panel tray 701 is pulled out from the two side rails 601, the abutment between the flange 710 at the other end of the rotating plate 708 and the slide plate 606 causes the slide plate 606 to further pull the gate 608 simultaneously through the pull rope 607. This causes the gate 608 to block the connection channel between the exhaust fan 9 and the inner cavity of the cabinet 1 through the gate 608. Furthermore, the gate 608 is prevented from being reset by gravity by the folding pin 706 and the engagement with the edge of the opening of the control compartment 2.

[0030] Please see Figures 3 to 7The control compartment 2 cavity contains a slidingly inserted plug-in maintenance assembly 7. The assembly includes a control board tray 701 and a male connector 702. The control board tray 701 integrates soft starter control components and power supply circuitry. The control board tray 701 is slidably mounted inside the side rails 601 via a sliding groove 602. The male connector 702 is connected to one end of the control board tray 701 near the inner wall of the control compartment 2 cavity. The male connector 702 achieves electrical connection between the control board and the soft starter through insertion with a female connector 3. The assembly also includes a handle 703 and a cross-shaped groove 704. The other end of the control board tray 701 is fixedly fitted with a handle 703, and the handle 703 has a cross-shaped groove 704 in its center, with a spring inside the groove. The assembly also includes a push rod 705 and a pin 706. 4. A push rod 705 is slidably installed inside the control panel tray 701. The push rod 705 slides in the middle of the control panel tray 701. One end of the push rod 705 abuts against the ring plate 4 on the outer edge of the female plug 3. The other end of the push rod 705 is rotatably installed with a pin 706. The plug-in maintenance assembly 7 also includes a linkage rod 707 and a rotating plate 708. The two sides of the root of the push rod 705 are fixedly connected with the linkage rod 707 with a "U" shaped structure. The linkage rod 707 slides on both sides of the control panel tray 701. The two ends of the linkage rod 707 are rotatably connected with the corresponding rotating plate 708. The plug-in maintenance assembly 7 also includes a pressure head 709 and a flange 710. The pressure head 709 is integrally fixed on the inner side of the rotating plate 708. The pressure head 709 abuts against the ring plate 4 on the outer edge of the female plug 3. The flange 710 is integrally fixed on the outer side of the rotating plate 708. The flange 710 abuts against the slide plate 606 in the upper slide rail 603.

[0031] The specific operation is as follows: Under the action of the spring piece built into the cross groove 704, on the one hand, the push rod 705 retracts below the male connector 702, and on the other hand, the linkage rod 707 pulls the rotating plate 708 and makes its end pressure head 709 press against the outside of the ring plate 4 of the female connector 3, maintaining a stable connection between the male connector 702 and the female connector 3 and establishing an electrical connection between the control board and the soft starter. When there is no need to disconnect the power for maintenance, the user only needs to pull the handle 703 and make the control board tray 701 slide in the sliding groove 602 at the bottom of the two side rails 601 to remove the control board from the equipment compartment 8 for live maintenance. During this process, because the pressure head 709 at one end of the rotating plate 708 is always pressed against the outside of the ring plate 4 of the female connector 3, the female connector 3 can be pulled out of the equipment compartment 8 along with the male connector 702 by means of the free stretching characteristic of the spring wire 5. During the maintenance process, the electrical connection between the control board and the soft starter is maintained to achieve hot-swapping. When power outage maintenance is required, the user only needs to press the end of the top rod 705 exposed in the middle of the handle 703. On the one hand, the "U"-shaped linkage rod 707 connected to the root of the top rod 705 will squeeze the corresponding end of the rotating plate 708 during the pressing process, so that the pressure head 709 at one end of the rotating plate 708 releases the abutment restriction on the female plug 3. On the other hand, the top rod 705 protrudes from below the male plug 702 during the pressing process and squeezes the inner side of the ring plate 4 of the female plug 3, so that the male plug 702 disconnects from the female plug 3, thereby causing the soft starter to lose power and stop the machine to achieve cold plugging and unplugging. Through the setting of the plugging and unplugging maintenance component 7, this application allows the operator to select between hot plugging and cold plugging and unplugging maintenance methods by pulling the handle 703 or pressing the top rod 705 according to the actual needs of the operator. By maintaining the power supply of the equipment during maintenance, the downtime is reduced, and the production line can continue to operate.

[0032] Please see Figures 1 to 2 The bottom of the cabinet 1 is provided with an equipment compartment 8, and the inner wall of the equipment compartment 8 is provided with an exhaust fan 9, which is located inside the gate plate 608. The equipment compartment 8 is fixed with a support plate 10, and a valve group 11 is installed on one side of the support plate 10 through a channel-shaped crossbeam. A voltage transformer 12 is installed on the other side of the support plate 10 through a fuse bracket. A vacuum contactor 13 is provided on one side of the bottom of the equipment compartment 8, and the upper insulator of the vacuum contactor 13 is installed on the support plate 10. A row of current transformers 14 is provided between the vacuum contactor 13 and the valve group 11, and the current transformers 14 are connected to the upper insulator of the vacuum contactor 13 through a connecting bar.

[0033] The specific operation is as follows: This application uses a redundant design that links the cold plugging and unplugging process with the opening and closing of the gate 608. This ensures that even when the equipment is stopped and the exhaust fan 9 stops operating, the connection channel between the exhaust fan 9 and the inner cavity of the cabinet 1 is sealed by the gate 608, thus protecting the internal environment of the cabinet 1 from the external environment and preventing the intrusion of dust and moisture during downtime from causing adverse effects.

[0034] In summary, when using this high-voltage solid-state soft starter with its built-in redundant control module, under the action of the spring clip built into the cross slot 704, on the one hand, the push rod 705 retracts below the male connector 702, and on the other hand, the linkage rod 707 pulls the rotating plate 708 so that one end of its pressure head 709 is pressed tightly against the outer side of the annular plate 4 of the female connector 3, maintaining a stable connection between the male connector 702 and the female connector 3 and establishing an electrical connection between the control board and the soft starter. When no power-off maintenance is required, the user only needs to pull the handle 703 and slide the control board tray 701 in the sliding groove 602 at the bottom of the two side rails 601 to remove the control board from the equipment compartment 8 for live maintenance. During this process, the pressure head 709 at one end of the rotating plate 708 is always pressed against the female connector 3. The female connector 3, located on the outer side of the ring plate 4, can be pulled out of the equipment compartment 8 along with the male connector 702 due to the free stretching characteristic of the spring wire 5. During maintenance, the electrical connection between the control board and the soft starter is maintained to achieve hot-swapping. When power-off maintenance is required, the user only needs to press the end of the top rod 705 exposed in the middle of the handle 703. On one hand, the "U"-shaped linkage rod 707 connected to the base of the top rod 705 will squeeze the corresponding end of the rotating plate 708 during pressing, causing the pressure head 709 at one end of the rotating plate 708 to release its contact restriction on the female connector 3. On the other hand, the top rod 705 protrudes from below the male connector 702 during pressing and squeezes the inner side of the ring plate 4 of the female connector 3, causing the male connector 702 to disconnect from the female connector 3, thus allowing the soft starter to... To achieve cold plugging and unplugging, the machine is shut down due to power loss. This application, through the installation of the plugging and unplugging maintenance component 7, allows operators to select between hot-plugging and cold-plugging maintenance methods by pulling the handle 703 or pressing the top rod 705, depending on their actual needs. Maintaining power supply to the equipment during maintenance reduces downtime and allows the production line to continue operating. Since the exhaust fan 9 inside the equipment compartment 8 remains powered during hot-plugging, this application designs the hot-plugging process such that, on one hand, the rotating plate 708 is tightened, causing the pressure head 709 at one end to press tightly against the outer side of the annular plate 4 of the female plug 3; on the other hand, the flange 710 at the other end of the rotating plate 708 does not intrude into the side groove 604 connected to the side of the upper slide rail 603 and the sliding plate. The 606 abuts against each other, ensuring that the inside of the exhaust fan 9 is not sealed by the gate 608 during hot-swapping, and that the exhaust fan 9 continuously removes moisture from the cabinet 1. During cold-swapping, the male connector 702 at the end of the control board disconnects from the electrical connection with the female connector 3, causing the exhaust fan 9 to be de-energized. Therefore, this application designs the cold-swapping process as follows: on one hand, the rotating plate 708 flips as the user presses the top rod 705, releasing the pressure head 709 at one end of the rotating plate 708 from the outside of the ring plate 4 of the female connector 3; on the other hand, the flange 710 at the other end of the rotating plate 708 penetrates into the upper slide rail 603 through the side groove 604 and abuts against the slide plate 606, allowing the control board tray 701 to be pulled out from the side rails 601.The contact between the flange 710 at the other end of the rotating plate 708 and the sliding plate 606 causes the sliding plate 606 to further pull the gate 608 upwards via the pull rope 607. This, in turn, seals the connection between the exhaust fan 9 and the inner cavity of the cabinet 1 through the gate 608. Furthermore, the folding pin 706, which engages with the edge of the control compartment 2 opening, prevents the gate 608 from resetting due to gravity. This application employs a redundant design that links the cold insertion / removal process with the opening and closing of the gate 608. This ensures that even when the equipment is stopped and the exhaust fan 9 is no longer operating, the connection between the exhaust fan 9 and the inner cavity of the cabinet 1 is sealed by the gate 608, thus isolating the internal environment of the cabinet 1 from the external environment and preventing the intrusion of dust and moisture during downtime.

[0035] The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical application of the invention, and to enable those skilled in the art to understand the invention and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A high-voltage solid-state soft starter with a built-in redundant control module, characterized in that, The system includes a cabinet (1) and a linkage control assembly (6). The top of the cabinet (1) is provided with a control compartment (2). The linkage control assembly (6) is fixedly installed on the side walls of the cavity on both sides of the control compartment (2). The linkage control assembly (6) includes a track (601), a sliding groove (602), an upper slide rail (603), a side groove (604), a throat (605), a slide plate (606), a pull rope (607), a gate (608), and a guide roller (609). The bottom surfaces of the two tracks (601) on both sides are provided with sliding grooves (602), and the openings of the sliding grooves (602) face inward. The top of the two tracks (601) on both sides are provided with upper slide rails (603), and the openings of the upper slide rails (603) are located at both ends. 3) A side groove (604) is provided along the length direction on the side, and a throat (605) is provided at one end of the upper slide rail (603) near the inner wall of the control chamber (2). A slide plate (606) is slidably installed inside the upper slide rail (603), and the diameter of the slide plate (606) is larger than the opening diameter of the throat (605). A pull rope (607) is connected to the rear end of the slide plate (606), and a gate (608) is connected to the end of the pull rope (607) away from the slide plate (606). A guide roller (609) is provided at the corner of the gate (608), and the guide roller (609) is rotatably installed on the opening edge of the inner wall of the control chamber (2) through a bearing bracket. A plug-in maintenance assembly (7) is slidably inserted into the control chamber (2). The control board tray (701) includes a control board tray (701) and a male connector (702). The control board tray (701) is embedded with a control board that integrates soft starter control components and power supply circuits. The control board tray (701) is slidably installed inside the side rails (601) through cooperation with the sliding groove (602). The male connector (702) is connected to one end of the control board tray (701) near the inner wall of the control compartment (2). The male connector (702) achieves electrical connection between the control board and the soft starter through the insertion of the female connector (3). The plug-in maintenance assembly (7) also includes a handle (703) and a cross groove (704). The handle (703) is fixedly installed at the other end of the control board tray (701), and a cross groove is opened in the middle of the handle (703). The slot (704) and the cross slot (704) have a built-in spring piece. The plug-in maintenance assembly (7) also includes a push rod (705) and a pin (706). The push rod (705) is slidably installed inside the cross slot (704), and the push rod (705) slides in the middle of the control panel tray (701). One end of the push rod (705) abuts against the ring plate (4) on the outer edge of the female plug (3), and the other end of the push rod (705) is rotatably installed with a pin (706). The plug-in maintenance assembly (7) also includes a linkage rod (707) and a rotating plate (708). The two sides of the root of the push rod (705) are fixedly connected with the linkage rod (707) of the "U" shape, and the linkage rod (707) slides on both sides of the control panel tray (701).Furthermore, the two ends of the linkage rod (707) are rotatably connected to the corresponding rotating plate (708). The plug-in maintenance assembly (7) also includes a pressure head (709) and a flange (710). The pressure head (709) is integrally fixed on the inner side of the rotating plate (708), and the pressure head (709) abuts against the annular plate (4) on the outer edge of the female plug (3). The flange (710) is integrally fixed on the outer side of the rotating plate (708), and the flange (710) abuts against the sliding plate (606) in the upper slide rail (603).

2. The high-voltage solid-state soft starter with a built-in redundant control module according to claim 1, characterized in that, The control chamber (2) has a female plug (3) movably installed in the middle of the inner wall of the cavity, and a ring plate (4) is integrally fixed on the outer edge of the female plug (3), and a spring wire (5) is connected to the input end of the female plug (3).

3. The high-voltage solid-state soft starter with a built-in redundant control module according to claim 2, characterized in that, The cabinet (1) has an equipment compartment (8) at the bottom, and the inner wall of the equipment compartment (8) is provided with an exhaust fan (9), which is located inside the gate (608).

4. A high-voltage solid-state soft starter with a built-in redundant control module according to claim 3, characterized in that, The equipment compartment (8) is fixed with a support plate (10), and a valve group (11) is installed on one side of the support plate (10) through a channel beam, and a voltage transformer (12) is installed on the other side of the support plate (10) through a fuse bracket.

5. A high-voltage solid-state soft starter with a built-in redundant control module according to claim 4, characterized in that, A vacuum contactor (13) is provided on one side of the bottom of the equipment compartment (8), and the upper insulator of the vacuum contactor (13) is installed on the bracket plate (10). A row of current transformers (14) is provided between the vacuum contactor (13) and the valve group (11), and the current transformers (14) are connected to the upper insulator of the vacuum contactor (13) through the connecting row.

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