Controller detection device and test equipment

Abstract

The utility model discloses a controller detection device and test equipment. The detection device comprises a voltage detection module, a first indication module, a main power supply and at least one standby power supply; the controller comprises at least two terminal strips; the power supply end of one terminal strip is connected with a main power supply, and the other terminal strips are connected with a standby power supply; the detection end of the voltage detection module is connected to the main power supply, the output end of the voltage detection module is connected with the control end of the terminal strip, and the voltage detection module outputs an abnormal signal when detecting that the main power supply is abnormal and transmits the abnormal signal to the control end of the terminal strip; the control end of the terminal strip is connected to a first power supply, the detection end of the terminal strip is connected with the first indication module, the controller switches a power supply according to an abnormal signal and controls the control end of the terminal strip correspondingly connected with the power supply for supplying power to be connected with the detection end, and the first indication module displays the working state of the controller. The controller detection device can detect the controller in advance, so that the fault controller is prevented from being connected to the power supply automatic switching system.

Description

Technical Field

[0001] This utility model relates to the field of circuit design technology, and in particular to a controller testing device and testing equipment. Background Technology

[0002] Redundant power supply systems can ensure that electrical equipment can continuously and stably obtain power supply under various complex conditions. Among them, automatic power switching devices can ensure power supply continuity and improve power supply reliability.

[0003] Automatic power transfer systems (ATS) quickly switch to backup power in the event of a main power failure, ensuring uninterrupted operation of the equipment. The controller in an ATS may become damaged due to prolonged use or frequent operation, generally requiring replacement. However, it's impossible to determine if a controller is faulty simply by observing its external structure before replacement. Connecting a faulty controller to the ATS poses a safety hazard. Utility Model Content

[0004] This invention provides a controller detection device and testing equipment to solve the problem in the prior art that it is impossible to determine whether the controller is faulty before it is connected to the automatic power switching device.

[0005] According to one aspect of the present invention, a controller detection device is provided for detecting the working status of a controller;

[0006] The detection device includes a voltage detection module, a first indicator module, a main power supply and at least one backup power supply, and the controller includes at least two terminal blocks;

[0007] One of the terminal blocks has its power supply terminal connected to one of the main power supplies, and the power supply terminals of the other terminal blocks are connected to at least one backup power supply.

[0008] The detection terminal of the voltage detection module is connected to the main power supply, and the output terminal of the voltage detection module is connected to the control terminal of each terminal block. The voltage detection module is used to output an abnormal signal when it detects an abnormality in the main power supply and transmit it to the control terminal of the terminal block.

[0009] The control terminal of the terminal block is connected to the first power supply, and the detection terminal of the terminal block is connected to the first indicator module. According to the abnormal signal, the controller switches the main power supply to the backup power supply and controls the control terminal and detection terminal of the terminal block connected to the backup power supply to be connected. The first indicator module is used to display the working status of the controller.

[0010] Optionally, the controller includes a first terminal block and a second terminal block, and the first indicator module includes a first indicator light and a second indicator light. The first end of the first indicator light is connected to the detection end of the first terminal block, and the second end of the first indicator light is connected to the neutral wire. The first end of the second indicator light is connected to the detection end of the second terminal block, and the second end of the second indicator light is connected to the neutral wire.

[0011] Optionally, the controller detection device further includes a second indicator module. The first end of the second indicator module is connected to the drive end of the voltage detection module, and the second end of the second indicator module is connected to the neutral wire. The drive end of the voltage detection module and the output end of the voltage detection module are connected when the first power supply is connected to the output end of the voltage detection module. The second indicator module is used to display the working status of the voltage detection module.

[0012] Optionally, the second indicator module includes a third indicator light, the first end of which is connected to the first end of the second indicator module, and the second end of which is connected to the second end of the second indicator module.

[0013] Optionally, the controller detection device further includes a first switch module, which is connected between the output terminal of the voltage detection module and the first power supply. The first switch module is used to connect or disconnect the first power supply.

[0014] According to another aspect of the present invention, a testing device is provided, comprising a main switch, a first test switch module, at least one second test switch module, and a controller detection device. The first terminal of the main switch is connected to a three-phase AC power supply. The power supply terminal of each terminal block is connected to the second terminal of the first test switch module or the second terminal of a second test switch module. The first terminal of the first test switch module or the first terminal of a second test switch module is connected to the second terminal of the main switch. The detection terminal of the voltage detection module of the controller detection device is connected to the second terminal of the first test switch module.

[0015] Optionally, the first test switch module includes a first normally closed switch, a second normally closed switch, and a third normally closed switch. The first end of the first normally closed switch, the first end of the second normally closed switch, and the first end of the third normally closed switch are connected to the first end of the first test switch module, and the second end of the first normally closed switch, the second end of the second normally closed switch, and the second end of the third normally closed switch are connected to the second end of the first test switch module.

[0016] Optionally, the second test switch module includes a third normally closed switch, a fourth normally closed switch, and a fifth normally closed switch. The first end of the third normally closed switch, the first end of the fourth normally closed switch, and the first end of the fifth normally closed switch are connected to the first end of the second test switch module, and the second end of the third normally closed switch, the second end of the fourth normally closed switch, and the second end of the fifth normally closed switch are connected to the second end of the second test switch module.

[0017] Optionally, the test equipment further includes a current limiting and protection module, which is connected in series between the second terminal of the main switch and the first terminal of the first test switch module or the first terminal of the second test switch module.

[0018] Optionally, the current limiting protection module includes a first fuse, a second fuse, a third fuse, a fourth fuse, a fifth fuse, and a sixth fuse. The first end of the first fuse, the first end of the second fuse, and the first end of the third fuse are connected to the second end of the main switch. The second ends of the first fuse, the second fuse, and the third fuse are connected to the first end of the first test switch module. The first ends of the fourth fuse, the fifth fuse, and the sixth fuse are connected to the second end of the main switch. The second ends of the fourth fuse, the fifth fuse, and the sixth fuse are connected to the first end of the second test switch module.

[0019] The technical solution of this utility model embodiment includes a detection device comprising a voltage detection module, a first indicator module, one main power supply, and at least one backup power supply. The controller includes at least two terminal blocks. One terminal block's power supply terminal is connected to the main power supply, and the power supply terminals of the other terminal blocks are connected to the backup power supply. The detection terminal of the voltage detection module is connected to the main power supply, and the output terminal of the voltage detection module is connected to the control terminal of the terminal block. When the voltage detection module detects an abnormality in the main power supply, it outputs an abnormal signal and transmits it to the control terminal of the terminal block. The control terminal of the terminal block is connected to the first power supply, and the detection terminal of the terminal block is connected to the first indicator module. The controller switches the power supply according to the abnormal signal and controls the control terminal of the corresponding terminal block connected to the new power supply to connect to the detection terminal. The first indicator module displays the controller's operating status. Because the controller can control the control terminal of the corresponding terminal block to connect to the detection terminal when switching power supplies, the first indicator module powers on and displays the controller's operating status, thus determining whether the controller can be used normally. The controller detection device pre-detects the controller, avoiding connecting a faulty controller to the automatic power switching system, and solving the problem in the prior art where it is impossible to determine whether the controller is faulty before connecting it to the automatic power switching device.

[0020] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of this utility model, nor is it intended to limit the scope of this utility model. Other features of this utility model will become readily apparent from the following description. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of a controller detection device provided in an embodiment of this utility model;

[0023] Figure 2 This is a circuit diagram of a controller detection device provided in an embodiment of the present invention;

[0024] Figure 3 This is a circuit diagram of a test device provided in an embodiment of this utility model. Detailed Implementation

[0025] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0026] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the utility model described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0027] This utility model provides a controller detection device for detecting the working status of a controller. Figure 1 This is a schematic diagram of the structure of a controller detection device provided in an embodiment of this utility model, as shown below. Figure 1 As shown, the detection device 100 includes a voltage detection module 110, a first indicator module 120, a main power supply Va, and at least one backup power supply Vb. The controller includes at least two terminal blocks J; the power supply terminal a of one terminal block J is connected to the main power supply Va, and the power supply terminals a of the other terminal blocks J are connected to at least one backup power supply Vb respectively; the detection terminal b of the voltage detection module 110 is connected to the main power supply Va, and the output terminal c of the voltage detection module 110 is connected to the control terminal M1 of each terminal block J. The voltage detection module 110 is used to output an abnormal signal when an abnormality is detected in the main power supply Va, and transmit it to the control terminal M1 of the terminal block J; the control terminal M1 of the terminal block J is connected to the first power supply V1, and the detection terminal M2 of the terminal block J is connected to the first indicator module 120. According to the abnormal signal, the controller switches the main power supply to the backup power supply, and controls the control terminal M1 of the terminal block J connected to the backup power supply to be connected to the detection terminal M2. The first indicator module 120 is used to display the working status of the controller.

[0028] In this embodiment of the invention, the voltage detection module 110 is a module for detecting the voltage of the main power supply Va. The main power supply refers to the primary source of power for the electrical equipment or system, while the backup power supply serves as a supplement or emergency substitute for the main power supply. For example, if the main power supply Va is three-phase AC, the voltage detection module 110 can detect abnormal conditions such as phase loss or power outage in the three-phase voltage of the main power supply. The first indicator module 120 is a module for displaying the controller's operating status. For example, the first indicator module 120 includes indicator lights and other components capable of outputting indicator signals. One main power supply Va and at least one backup power supply Vb constitute a redundant power supply. The terminal block J serves as the controller's interface, connecting to both the main power supply and the backup power supply.

[0029] In this embodiment of the invention, the voltage detection module 110 detects the main power supply Va. When an abnormal voltage is detected in the main power supply Va, the voltage detection module 110 outputs an abnormal signal. If the controller switches the main power supply to the backup power supply according to the abnormal signal, and controls the control terminal M1 of the corresponding terminal block J of the backup power supply to connect with the detection terminal M2, the indicator light in the first indicator module 120 is powered on. At this time, the first indicator module 120 indicates that the controller is in normal working condition. If the controller cannot switch the main power supply to the backup power supply according to the abnormal signal, there is no power supply, and the control terminal M1 and detection terminal M2 of all terminal blocks J are disconnected. The first indicator module 120 indicates that the controller is in a fault state.

[0030] In this embodiment, the detection device includes a voltage detection module, a first indicator module, one main power supply, and at least one backup power supply. The controller includes at least two terminal blocks. One terminal block's power supply terminal is connected to the main power supply, and the power supply terminals of the other terminal blocks are connected to the backup power supply. The detection terminal of the voltage detection module is connected to the main power supply, and its output terminal is connected to the control terminal of the terminal block. When the voltage detection module detects an abnormality in the main power supply, it outputs an abnormal signal and transmits it to the control terminal of the terminal block. The control terminal of the terminal block is connected to the first power supply, and its detection terminal is connected to the first indicator module. The controller switches the power supply according to the abnormal signal and controls the control terminal of the corresponding terminal block connected to the new power supply to connect to the detection terminal. The first indicator module displays the controller's operating status. Because the controller can control the control terminal of the corresponding terminal block to connect to the detection terminal when switching power supplies, the first indicator module powers on and displays the controller's operating status, allowing for the determination of whether the controller is functioning normally. The controller detection device pre-detects the controller, preventing faulty controllers from being connected to the automatic power switching system, thus solving the problem in the prior art where it was impossible to determine whether a controller was faulty before connecting it to the automatic power switching device.

[0031] Figure 2 This is a circuit diagram of a controller detection device provided in an embodiment of this utility model, such as... Figure 2 As shown, the controller includes a first terminal block J1 and a second terminal block J2. The first indicator module 120 includes a first indicator light L1 and a second indicator light L2. The first end of the first indicator light L1 is connected to the detection end M2 of the first terminal block J1, and the second end of the first indicator light L1 is connected to the neutral line N. The first end of the second indicator light J2 is connected to the detection end M2 of the second terminal block J2, and the second end of the second indicator light L2 is connected to the neutral line N.

[0032] In this embodiment of the invention, the controller is connected to a main power supply via a first terminal block J1 and to a backup power supply via a second terminal block J2. The main power supply is a three-phase AC power supply, with its three phase lines denoted as A1, B1, and C1, respectively. The backup power supply is also a three-phase AC power supply, with its three phase lines denoted as A2, B2, and C2, respectively. Correspondingly, the power terminals A1, B1, and C1 of the first terminal block J1 are connected to the three phase lines A1, B1, and C1 of the main power supply, and the power terminals A2, B2, and C2 of the second terminal block J2 are connected to the three phase lines A2, B2, and C2 of the backup power supply, respectively. The first terminal block J1 also includes a neutral terminal N1, and the second terminal block J2 also includes a neutral terminal N2. Based on the above embodiment, when the voltage detection module 110 detects a fault in any one of the three phase lines A1, B1, and C1 of the main power supply, i.e., the voltage of any one phase line is zero, the voltage detection module 110 outputs an abnormal signal. If the controller switches from main power to backup power based on an abnormal signal and connects the control terminal M1 of the second terminal block J2 to the detection terminal M2, the second indicator light L2 will illuminate, indicating that the controller is in normal working condition. Conversely, if the second indicator light L2 does not illuminate, the controller is in a fault state.

[0033] Continue to refer to Figure 2 The controller detection device also includes a second indicator module 210. The first end of the second indicator module 210 is connected to the drive end of the voltage detection module 110, and the second end of the second indicator module 210 is connected to the neutral line. The drive end of the voltage detection module 110 and the output end of the voltage detection module 110 are connected when the first power supply V1 is connected to the output end of the voltage detection module 110. The second indicator module 210 is used to display the working status of the voltage detection module 110.

[0034] In this embodiment of the present invention, the second indicator module 210 is a module that indicates the working state of the voltage detection module 110. For example, the second indicator module 210 includes a third indicator light L3. The first end of the third indicator light L3 is connected to the first end of the second indicator module 210, and the second end of the third indicator light L3 is connected to the second end of the second indicator module 210.

[0035] Continue to refer to Figure 2 The controller detection device also includes a first switch module 220, which is connected between the output terminal of the voltage detection module 110 and the first power supply V1. The first switch module 220 is used to connect or disconnect the first power supply V1.

[0036] The first switch module 220 controls the connection or disconnection of the first power supply V1. For example, the first switch module 220 includes a single-phase switch S1, the first end of which is connected to the first power supply V1. The second end of the single-phase switch S1 is connected to the output terminal of the voltage detection module 110. When the single-phase switch S1 is closed, the output terminal of the voltage detection module 110 is connected to the power supply.

[0037] Based on the above embodiment, the voltage detection module 110 includes a voltage protection relay K. Terminal 1 of the voltage protection relay K serves as the output terminal of the voltage detection module 110, terminal 3 serves as the driving terminal of the voltage detection module 110, and terminals 5, 6, and 8 serve as the detection terminals of the voltage detection module 110, respectively connected to the three phase lines A1, B1, and C1 of the main power supply. Terminals 2, 4, and 7 of the voltage protection relay K are in a floating state. After terminal 1 of the voltage protection relay K is connected to the first power supply V1, terminal 1 and terminal 3 of the voltage protection relay K are connected, and the third indicator light L3 illuminates. At this time, the voltage protection relay is in normal working condition.

[0038] In this embodiment of the invention, the voltage detection module 110 detects the main power supply. When an abnormal voltage is detected in the main power supply, the voltage detection module 110 outputs an abnormal signal. If the controller switches the main power supply to the backup power supply based on the abnormal signal, and connects the control terminal M1 of the corresponding terminal block J of the backup power supply to the detection terminal M2, the first indicator module 120 displays that the controller is in normal working condition. If the controller cannot switch the main power supply to the backup power supply based on the abnormal signal, all terminal blocks J's control terminals M1 and detection terminals M2 are disconnected, and the first indicator module 120 displays that the controller is in a faulty state. Since the first indicator module can display the controller's working status when the controller switches power supplies, it can determine whether the controller can be used normally. The controller detection device avoids connecting a faulty controller to the automatic power switching system by pre-detecting the controller. Simultaneously, the second indicator module 210 illuminates when the voltage detection module 110 is working normally, allowing the second indicator module to detect the working status of the voltage detection module.

[0039] This utility model embodiment also provides a testing device. Figure 3 This is a circuit diagram of a testing device provided in an embodiment of this utility model, such as... Figure 3As shown, the test equipment 10 includes a main switch S2, a first test switch module 11, at least one second test switch module 12, and a controller detection device 100. The first terminal of the main switch S2 is connected to a three-phase AC power supply. The power supply terminal of each terminal block is connected to the second terminal of the first test switch module 11 or the second terminal of one of the second test switch modules 12. The first terminal of the first test switch module 11 or the first terminal of one of the second test switch modules 12 is connected to the second terminal of the main switch S2. The detection terminal of the voltage detection module 110 of the controller detection device is connected to the second terminal of the first test switch module 11.

[0040] In this embodiment of the invention, the main switch S2 is a three-phase power switch, and the three phase lines of the three-phase AC power supply connected to the main switch S2 are represented by A, B, and C, respectively. The first test switch module 11 is a module connected in series in the main power line, and turning off the first test switch module 11 simulates a power outage of the main power supply. The second test switch module 12 is a module connected in series in the backup power line, and turning off the second test switch module 12 simulates a power outage of the backup power supply. For example, the switching elements inside the first test switch module 11 and the second test switch module 12 are normally closed switches. When the main switch S2 connects the detection device to the power supply, the detection device detects the controller; when the main switch S2 disconnects the detection device from the power supply, the detection device is de-energized and no longer detects the controller. The test equipment in this embodiment includes the controller detection device in any of the above embodiments and has the beneficial effects of the controller detection device in any of the above embodiments.

[0041] Continue to refer to Figure 3 The testing device includes one main power supply and one backup power supply. The main power supply is a three-phase AC power supply, and the backup power supply is a three-phase AC power supply. A first test switch module 11 is used to connect or disconnect the main power supply, and a second test switch module 12 is used to connect or disconnect the backup power supply. The first test switch module 11 includes a first normally closed switch e1, a second normally closed switch e2, and a third normally closed switch e3. The first normally closed switch e1 is connected in series with the first phase line A1 of the main power supply, the second normally closed switch e2 is connected in series with the second phase line A2 of the main power supply, and the third normally closed switch e3 is connected in series with the third phase line A3 of the main power supply. The second test switch module 12 includes a fourth normally closed switch e4, a fifth normally closed switch e5, and a sixth normally closed switch e6. The fourth normally closed switch e4 is connected in series with the first phase line A2 of the backup power supply, the fifth normally closed switch e5 is connected in series with the second phase line B2 of the backup power supply, and the sixth normally closed switch e6 is connected in series with the third phase line C2 of the backup power supply.

[0042] Continue to refer to Figure 3The test equipment also includes a current limiting protection module 13, which is connected in series between the second terminal of the main switch S2 and the first terminal of the first test switch module 11 or the first terminal of a second test switch module 12. Specifically, the current limiting protection module 13 includes a first fuse F1, a second fuse F2, a third fuse F3, a fourth fuse F4, a fifth fuse F5, and a sixth fuse F6. The first fuse F1, the second fuse F2, and the third fuse F3 are connected in series with the three phase lines A1, B1, and C1 of the main power supply, respectively. The fourth fuse F4, the fifth fuse F5, and the sixth fuse F6 are connected in series with the three phase lines A2, B2, and C2 of the backup power supply, respectively. The current limiting protection module 13 is a module that provides short-circuit or overload protection for the circuit, ensuring the safe and stable operation of the circuit.

[0043] Based on the above embodiment, the main switch S2 is closed, and the single-phase switch S1 is closed. The first power supply V1 connected to the single-phase switch S1 can be the power supply of one phase of a three-phase AC power supply. The main power supply is transmitted to the power supply terminal of the first terminal block J1 via the first test switch module 11. The backup power supply is transmitted to the power supply terminal of the second terminal block J2 via the first test switch module 11.

[0044] For example, a power outage simulation of the main power supply can be achieved by manually disconnecting the first normally closed switch e1, the second normally closed switch e2, or the third normally closed switch e3. When the main power supply fails, the voltage detection module 110 outputs an abnormal signal. If the controller switches the main power supply to the backup power supply based on the abnormal signal and connects the control terminal M1 of the second terminal block J2 to the detection terminal M2, the second indicator light L2 will illuminate. A power outage simulation of the backup power supply can be achieved by manually disconnecting the fourth normally closed switch e4, the fifth normally closed switch e5, or the sixth normally closed switch e6. When the backup power supply fails, the controller switches the backup power supply to the main power supply and connects the control terminal M1 of the first terminal block J1 to the detection terminal M2, and the first indicator light L1 will illuminate. At this time, the controller is in normal working condition. If the controller cannot switch the main power supply to the backup power supply based on the abnormal signal, there is no power supply, the control terminals M1 and detection terminals M2 of all terminal blocks J are disconnected, the first indicator light L1 is not illuminated, and the controller is in a fault state.

[0045] This embodiment of the invention uses a test device to simulate a power outage, enabling pre-testing of the controller and preventing faulty controllers from being connected to the automatic power switching system. This is of great significance for ensuring the safe operation of the system.

[0046] It should be understood that the various forms of the process shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this utility model can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this utility model can be achieved, and this is not limited herein.

[0047] The specific embodiments described above do not constitute a limitation on the scope of protection of this utility model. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A controller detection device, characterized in that, Used to detect the working status of the controller; The detection device includes a voltage detection module, a first indicator module, a main power supply and at least one backup power supply, and the controller includes at least two terminal blocks; One of the terminal blocks has its power supply terminal connected to one of the main power supplies, and the power supply terminals of the other terminal blocks are connected to at least one backup power supply. The detection terminal of the voltage detection module is connected to the main power supply, and the output terminal of the voltage detection module is connected to the control terminal of each terminal block. The voltage detection module is used to output an abnormal signal when it detects an abnormality in the main power supply and transmit it to the control terminal of the terminal block. The control terminal of the terminal block is connected to the first power supply, and the detection terminal of the terminal block is connected to the first indicator module. According to the abnormal signal, the controller switches the main power supply to the backup power supply and controls the control terminal and detection terminal of the terminal block connected to the backup power supply to be connected. The first indicator module is used to display the working status of the controller.

2. The controller detection device according to claim 1, characterized in that, The controller includes a first terminal block and a second terminal block. The first indicator module includes a first indicator light and a second indicator light. The first end of the first indicator light is connected to the detection end of the first terminal block, and the second end of the first indicator light is connected to the neutral wire. The first end of the second indicator light is connected to the detection end of the second terminal block, and the second end of the second indicator light is connected to the neutral wire.

3. The controller detection device according to claim 1, characterized in that, The controller detection device further includes a second indicator module. The first end of the second indicator module is connected to the drive end of the voltage detection module, and the second end of the second indicator module is connected to the neutral wire. The drive end of the voltage detection module and the output end of the voltage detection module are connected when the first power supply is connected to the output end of the voltage detection module. The second indicator module is used to display the working status of the voltage detection module.

4. The controller detection device according to claim 3, characterized in that, The second indicator module includes a third indicator light, the first end of which is connected to the first end of the second indicator module, and the second end of which is connected to the second end of the second indicator module.

5. The controller detection device according to claim 3, characterized in that, The controller detection device further includes a first switch module, which is connected between the output terminal of the voltage detection module and the first power supply. The first switch module is used to connect or disconnect the first power supply.

6. A testing device, characterized in that, The device includes a main switch, a first test switch module, at least one second test switch module, and a controller detection device as described in any one of claims 1-5. The first terminal of the main switch is connected to a three-phase AC power supply. The power supply terminal of each terminal block is connected to the second terminal of the first test switch module or the second terminal of a second test switch module. The first terminal of the first test switch module or the first terminal of a second test switch module is connected to the second terminal of the main switch. The detection terminal of the voltage detection module of the controller detection device is connected to the second terminal of the first test switch module.

7. The testing equipment according to claim 6, characterized in that, The first test switch module includes a first normally closed switch, a second normally closed switch, and a third normally closed switch. The first end of the first normally closed switch, the first end of the second normally closed switch, and the first end of the third normally closed switch are connected to the first end of the first test switch module. The second end of the first normally closed switch, the second end of the second normally closed switch, and the second end of the third normally closed switch are connected to the second end of the first test switch module.

8. The testing equipment according to claim 6, characterized in that, The second test switch module includes a third normally closed switch, a fourth normally closed switch, and a fifth normally closed switch. The first end of the third normally closed switch, the first end of the fourth normally closed switch, and the first end of the fifth normally closed switch are connected to the first end of the second test switch module. The second end of the third normally closed switch, the second end of the fourth normally closed switch, and the second end of the fifth normally closed switch are connected to the second end of the second test switch module.

9. The testing equipment according to claim 6, characterized in that, The test equipment also includes a current limiting and protection module, which is connected in series between the second terminal of the main switch and the first terminal of the first test switch module or the first terminal of the second test switch module.

10. The testing equipment according to claim 9, characterized in that, The current limiting protection module includes a first fuse, a second fuse, a third fuse, a fourth fuse, a fifth fuse, and a sixth fuse. The first end of the first fuse, the first end of the second fuse, and the first end of the third fuse are connected to the second end of the main switch. The second ends of the first fuse, the second fuse, and the third fuse are connected to the first end of the first test switch module. The first ends of the fourth fuse, the fifth fuse, and the sixth fuse are connected to the second end of the main switch. The second ends of the fourth fuse, the fifth fuse, and the sixth fuse are connected to the first end of the second test switch module.

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