A high voltage electrical appliance comprehensive test bench

Abstract

The utility model discloses a high-voltage electrical appliance comprehensive test bench, which relates to the field related to high-voltage electrical appliance testing, and solves the problems of long test failure, low test accuracy and short service life. The utility model adopts the following scheme. The high-voltage electrical appliance comprehensive test bench comprises a power supply module, an operation control module, a connection component, a multimeter, a test device and an auxiliary device. Automatic detection of equipment to be detected is achieved through a PLC controller, thereby improving the working efficiency of the test bench; the performance of the high-voltage electrical appliance is analyzed and diagnosed through an oscilloscope, thereby improving the accuracy of the test bench test; and the test bench is prevented from electrical failure through a grounding component, thereby extending the service life of the test bench.

Description

Technical Field

[0001] The utility model relates to the field of high-voltage experiments, in particular to a high-voltage electrical appliance comprehensive test bench. Background Art

[0002] The high-voltage electrical appliance comprehensive test bench is an important equipment used to perform various electrical performance tests and evaluations on high-voltage electrical equipment. With the development of the electric power industry, the safety and reliability requirements of high-voltage electrical equipment are getting higher and higher. Therefore, the high-voltage electrical appliance comprehensive test bench plays a vital role in the power system. The high-voltage electrical appliance comprehensive test bench adopts advanced testing technology and automatic control system to achieve precise control and data acquisition of the test process, and to achieve precise measurement and data analysis of high-voltage electrical equipment. At the same time, auxiliary devices also provide necessary support and guarantee for the test process. In the design and manufacturing process of the high-voltage electrical appliance comprehensive test bench, it is also necessary to consider the requirements of electromagnetic compatibility, environmental adaptability, safety protection, etc. These background technologies provide important guarantees for the performance and reliability of the high-voltage electrical appliance comprehensive test bench, and provide strong support for the safe and stable operation of the power system.

[0003] However, the current high-voltage electrical appliance comprehensive test bench still has the following disadvantages:

[0004] 1. The test failure time of the traditional high-voltage electrical appliance comprehensive test bench is too long, which seriously affects the working efficiency of the test bench;

[0005] 2. The traditional high-voltage electrical appliance comprehensive test bench has low test accuracy, resulting in a large error between the test results and the actual data;

[0006] 3. The traditional high-voltage electrical comprehensive test bench does not provide adequate protection for the equipment, which greatly reduces the service life of the test bench;

[0007] Therefore, a high-voltage electrical appliance comprehensive test bench realizes automatic detection of the equipment to be detected through a PLC controller, thereby improving the working efficiency of the test bench; the performance of the high-voltage electrical appliance is analyzed and diagnosed through an oscilloscope, thereby improving the accuracy of the test bench test; and the test bench is prevented from electrical failures through a grounding component, thereby extending the service life of the test bench. Utility Model Content

[0008] The utility model aims to provide a high-voltage electrical appliance comprehensive test bench in order to solve the problems of long test failure, low test accuracy and short service life of the traditional high-voltage electrical appliance comprehensive test bench.

[0009] In order to achieve the above technical effects, the utility model adopts the following technical solutions:

[0010] The positive and beneficial technical effects of the utility model are: the heat conduction efficiency is increased by the thermally conductive silicone sheet, thereby improving the heat dissipation capacity of the chip heat dissipation device; the vibration and noise generated by the movement of the fan blades are isolated by the noise damping component, thereby improving the use environment of the chip heat dissipation device; the speed of the fan blades is controlled by the speed regulating component, thereby reducing energy consumption.

[0011] A high-voltage electrical appliance comprehensive test bench comprises a power supply module, an operation control module, a connection component, a multimeter, a test device and an auxiliary device, wherein the power supply module is located on the outer surface of the test bench, the operation control module is located on the right side of the power supply module, the connection component is located at the connection of each device, the multimeter is located below the operation control module, the test device is located on the right side of the operation control module, and the auxiliary devices are distributed inside and on the surface of the test bench.

[0012] As a further description of the above technical solution: the power module includes a frequency converter, a monitoring device, a power protection device and a power interface. The signal output end of the frequency converter is connected to the signal input end of the main power supply line to adjust the frequency of the power supply; the monitoring device is located at the upper right corner of the test bench, and is used for operators to observe and record power supply data information; the power protection device is located at the main power inlet of the test bench, and is cut off in time when the power supply is abnormal; the power interface is located at the bottom of the test bench, and is connected to an external power supply to achieve normal operation of the test bench.

[0013] As a further description of the above technical solution: the operation control module includes a display, a handle, a control button and an emergency stop button. The display uses an LED display screen to display parameter information during the test process, and the display is located on the upper left side of the test bench; the handle is located on the right side of the monitoring device and is used to execute the actions of each device; the control button is located below the detection device and is used to issue control instructions; the emergency stop button is located on the right side of the control button as a safety device and is used to stop all actions of the test bench.

[0014] As a further description of the above technical solution: the connection component includes a cable, a sensor, a connector and an insulating cover, the cable adopts copper conductor material to realize the transmission of electrical energy signals; the sensor converts the detected physical quantity into an electrical signal, and the signal output end of the sensor is connected to the signal input end of the connector; the signal output end of the connector is connected to the input end of the multimeter, which is used to connect and disconnect the transmission of the cable; the insulating cover adopts silicone rubber material to isolate and protect the circuit, and the insulating cover is located at the cable connection.

[0015] As a further description of the above technical solution: the multimeter includes a switching power supply, a digital display screen, a selection switch, an input terminal and a function key. The switching power supply is encapsulated on the side of the multimeter to control the connection of the power supply; the digital display screen is located above the surface of the multimeter for the user to read the measurement results; the selection switch is located in the middle of the surface of the multimeter for adjusting the range; the input terminal is located on the side of the multimeter for connecting different circuits to be tested; the function key is located at the bottom of the front of the multimeter for activating and deactivating additional functions.

[0016] As a further description of the above technical solution: the testing device includes a PLC controller, a transformer, an oscilloscope and a multi-channel resistor. The PLC controller is located inside the test bench and is used to realize automatic detection of the equipment to be tested; the transformer changes the current and voltage through electromagnetic induction; the oscilloscope is located on the right side of the operation control module and is used to analyze and diagnose the performance of high-voltage electrical appliances; the limited output end of the multi-channel resistor is connected to the signal input end of the oscilloscope for measuring and recording multiple resistance values.

[0017] As a further description of the above technical solution: the auxiliary device includes an installation tool, a grounding component, a cooling component and a warning sign. The installation tool includes a base and a clamp for installing and fixing the high-voltage device; the grounding component is located at the bottom of the test bench to prevent electrical failures; the cooling component includes a fan, a radiator and a water cooler to dissipate the heat generated by the test bench; the warning sign is affixed to the surface of the test bench to remind operators to pay attention to safety matters. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the purpose, technical solutions and advantages of the utility model, the utility model will be further described in detail below with reference to the accompanying drawings. It is obvious that the implementation cases described are only part of the embodiments of the utility model, rather than all the embodiments, wherein:

[0019] Figure 1 A schematic diagram of the overall structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the power module of the utility model;

[0021] Figure 3 This is a structural diagram of the operation control module of the utility model;

[0022] Figure 4 It is a structural schematic diagram of the multimeter of the utility model;

[0023] Figure 5 It is a circuit diagram of the oscilloscope of the utility model;

[0024] In the figure, 1-protective shell, 101-shell, 102-heat dissipation hole, 103-filter, 104-thermal conductive silicone sheet, 2-bracket, 201-base, 202-clamping component, 203-mounting hole, 204-protective isolation component, 3-temperature sensor, 301-thermistor, 302-temperature sensor chip, 303-thermocouple, 4-cooling fan, 401-motor, 402-fan blade, 403-bearing, 404-noise damping component, 5-radiator, 501-heat dissipation base, 502-heat sink, 503-heat dissipation pipeline, 6-speed adjustment component, 601-input interface, 602-control chip, 603-drive circuit, 604-output interface. DETAILED DESCRIPTION

[0025] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0026] A high-voltage electrical appliance comprehensive test bench comprises a power module 1, an operation control module 2, a connection component 3, a multimeter 4, a test device 5 and an auxiliary device 6, wherein:

[0027] Power module 1, used to provide stable power required for testing;

[0028] Operation control module 2, used to realize the interaction between the user and the test bench;

[0029] A connection assembly 3, used for connecting the high-voltage electrical appliance to be tested with a test point of the test bench;

[0030] Multimeter 4, used to measure the electrical appliances in contact;

[0031] Testing device 5, used to test the performance of high voltage electrical appliances;

[0032] Auxiliary device 6, used to ensure that the test bench operates in a safe working environment;

[0033] The power module 1 is located on the outer surface of the test bench, the operation control module 2 is located on the right side of the power module 1, the connection component 3 is located at the connection of each device, the multimeter 4 is located below the operation control module 2, the test device 5 is located on the right side of the operation control module 2, and the auxiliary device 6 is distributed inside and on the surface of the test bench.

[0034] Furthermore, the power module 1 includes a frequency converter 101, a monitoring device 102, a power protection device 103 and a power interface 104. The signal output end of the frequency converter 101 is connected to the signal input end of the main power supply line to adjust the frequency of the power supply; the monitoring device 102 is located at the upper right side of the test bench and is used for operators to observe and record power data information; the power protection device 103 is located at the main power inlet of the test bench and is cut off in time when an abnormality occurs in the power supply; the power interface 104 is located at the bottom of the test bench and is connected to an external power supply to achieve normal operation of the test bench.

[0035] In a specific embodiment, the main responsibility of the frequency converter 101 is to regulate and control the frequency of the power supply. The frequency converter 101 accurately adjusts the frequency and voltage of the power supply by receiving instructions from the signal output terminal to meet the needs of different devices and applications. This flexibility not only improves the efficiency of the power system, but also ensures that various electrical equipment can operate safely and stably; the monitoring device 102 is responsible for real-time monitoring of various parameters of the power module 1 and displays these data information to the operator. The monitoring device 102 is usually located in the upper right corner of the test bench. Such a position is convenient for the operator to observe and will not interfere with the normal operation of other equipment. Through the monitoring device 102, the operator can understand the working status of the power supply in real time, including voltage. , current, frequency and other key parameters, so as to timely discover and solve potential problems; the power protection device 103 is the safety guardian of the power module 1. It is located at the main power inlet of the test bench and is always ready to deal with possible power abnormalities. Once abnormal conditions such as voltage fluctuations, overloads or short circuits are detected, the power protection device 103 will immediately activate the emergency mechanism and cut off the power supply to prevent equipment damage or fire and other dangerous situations; the power interface 104 is the bridge connecting the power module 1 with the external power supply. It is located at the bottom of the test bench and provides a convenient power access method. Through the power interface 104, the power module 1 can easily establish a connection with the external power supply, thereby providing stable and reliable power support for the test bench. At the same time, the power interface 104 also has good compatibility and extensibility, and can connect different types of power cords and plugs according to actual needs.

[0036] Furthermore, the operation control module 2 includes a display 201, a handle 202, a control button 203 and an emergency stop button 204. The display 201 uses an LED display screen to display parameter information during the test process, and the display 201 is located at the upper left side of the test bench; the handle 202 is located on the right side of the monitoring device 102, and is used to execute the actions of each device; the control button 203 is located below the detection device 102, and is used to issue control instructions; the emergency stop button 204 is located on the right side of the control button 203 as a safety device, and is used to stop all actions of the test bench.

[0037] In a specific embodiment, the display 201 adopts a high-brightness, low-power LED display screen, which can clearly display various key parameter information during the test, such as temperature, pressure, speed, etc. This information is presented in a real-time updated form, so that the operator can understand the progress of the test at any time. The display 201 is cleverly placed on the upper left of the test bench, which will not interfere with the operator's line of sight and ensure the visibility of the information; the handle 202 is located on the right side of the monitoring device 102, and is designed to be comfortable to hold, which is convenient for the operator to use for a long time. The handle is equipped with a variety of function keys and switches for accurately controlling the actions of each device. For example, the handle can be used to start or stop the motor, adjust the valve opening, switch the measurement mode, etc. The handle 202 responds quickly and accurately, greatly improving the efficiency and reliability of the test; the control button 203 is located below the detection device 102, and this area is relatively spacious, which is convenient for the operator to operate. The control button 203 is provided with multiple buttons, each of which corresponds to a specific control instruction. The operator only needs to press the corresponding button lightly to send out the control command, thereby achieving precise control of the test process; the emergency stop button 204 is an indispensable safety device, which is located on the right side of the control button 203 and is designed to be a striking red color so that the operator can quickly find and press it in an emergency. Once the emergency stop button 204 is activated, the test bench will immediately stop all actions to ensure the safety of the operator and the equipment.

[0038] Furthermore, the connection component 3 includes a cable 301, a sensor 302, a connector 303 and an insulating cover 304. The cable 301 uses copper conductor material to realize the transmission of electrical energy signals; the sensor 302 converts the detected physical quantity into an electrical signal, and the signal output end of the sensor 302 is connected to the signal input end of the connector 303; the signal output end of the connector 303 is connected to the input end of the multimeter 4, which is used to connect and disconnect the transmission of the cable; the insulating cover 304 uses silicone rubber material to isolate and protect the circuit, and the insulating cover 304 is located at the cable connection.

[0039] In a specific embodiment, the cable 301 is the core part of the connection component 3, and is made of high-quality copper conductor material. The copper conductor has excellent conductivity and corrosion resistance, and can ensure the stability and accuracy of the electric energy signal during transmission. In addition, we have also carried out strict testing and aging treatment on the cable 301 to ensure that it maintains good performance during long-term use; the sensor 302 is one of the key components of the connection component 3, which is responsible for converting the detected physical quantity into an electrical signal. We have adopted high-precision sensor chips and advanced signal processing technology to ensure that the sensor 302 can accurately capture and convert various physical quantities, such as temperature, pressure, humidity, etc. At the same time, the signal output end of the sensor 302 is closely connected with the signal input end of the connector 303 to ensure the stability and continuity of signal transmission; the connector 303 is an important part of the connection component 3, which is used to connect and disconnect the transmission of the cable. We use a high-performance connector chip and a precise mechanical structure to ensure that the connector 303 can achieve fast and stable connection and disconnection operations. At the same time, the connector 303 also has a self-locking function, which can prevent accidental detachment and poor contact, and improve the overall reliability and safety; the insulating cover 304 is made of silicone rubber material to isolate and protect the circuit. Silicone rubber has excellent insulation performance and high temperature resistance, low temperature resistance, aging resistance and other characteristics, which can effectively prevent the occurrence of circuit short circuits and leakage faults. At the same time, the insulating cover 304 is also located at the cable connection, which can reduce the impact of electromagnetic interference and external environment on the circuit, and further improve the stability and accuracy of signal transmission.

[0040] Furthermore, the multimeter 4 includes a switching power supply 401, a digital display screen 402, a selection switch 403, an input terminal 404 and a function key 405. The switching power supply 401 is encapsulated on the side of the multimeter 4 to control the connection of the power supply; the digital display screen 402 is located above the surface of the multimeter 4 for the user to read the measurement results; the selection switch 403 is located in the middle of the surface of the multimeter 4 for adjusting the range; the input terminal 404 is located on the side of the multimeter 4 for connecting different circuits to be tested; the function key is located at the bottom of the front of the multimeter 4 for activating and deactivating additional functions.

[0041] In a specific embodiment, the multimeter 4 is equipped with an efficient switching power supply 401, which is cleverly packaged on the side of the multimeter to achieve convenient control of the power supply. The switching power supply 401 not only ensures the stable operation of the multimeter, but also provides a variety of voltage output options to meet different measurement needs; the digital display screen 402 of the multimeter 4 is carefully placed above the surface of the device to ensure that the user can easily read the measurement results. This high-definition display screen uses the latest display technology and can clearly display various data, including voltage, current, resistance, etc., so that users can see at a glance; the multimeter 4 is also equipped with a convenient selection switch 403, located in the middle of the device surface. By rotating the selection switch 403, the user can easily adjust the range to adapt to different measurement scenarios. This design makes the multimeter 4 highly flexible and applicable; the input terminals 404 of the multimeter 4 are also designed to be very user-friendly. These terminals are placed on the side of the device, which is convenient for users to connect different circuits to be tested. The input terminals 404 are made of high-quality materials, have good electrical conductivity and corrosion resistance, and ensure the accuracy and reliability of measurement; the multimeter 4 also has a series of practical function keys 405, which are located at the lower front of the device. These function keys can activate and deactivate various additional functions, such as automatic range, maximum / minimum value storage, data hold, etc. Through these function keys, users can customize the working mode of the multimeter 4 according to their needs, further improving measurement efficiency and accuracy.

[0042] Furthermore, the testing device 5 includes a PLC controller 501, a transformer 502, an oscilloscope 503 and a multi-channel resistor 504. The PLC controller 501 is located inside the test bench and is used to realize automatic detection of the equipment to be tested; the transformer 502 changes the current and voltage through electromagnetic induction; the oscilloscope 503 is located on the right side of the operation control module 2 and is used to analyze and diagnose the performance of high-voltage electrical appliances; the limited output end of the multi-channel resistor 504 is connected to the signal input end of the oscilloscope 503, which is used to measure and record multiple resistance values.

[0043] In a specific embodiment, the PLC controller 501 is cleverly hidden inside the test bench. It is responsible for receiving signals from various sensors, processing them according to preset program logic, and driving the actuators to complete corresponding actions. This process realizes the automated detection of the equipment to be tested, greatly improving the test efficiency and accuracy; the transformer 502 is a key component that changes current and voltage through the principle of electromagnetic induction. It can provide a suitable power supply voltage for the equipment to be tested as needed, ensuring the safety and stability of the test process. At the same time, the transformer 502 can also convert high voltage into low voltage to facilitate subsequent data analysis and processing; the oscilloscope 503 is located on the right side of the operation control module 2. It has the characteristics of high precision and high resolution, and can monitor and record key parameters such as voltage and current of high-voltage electrical appliances in real time. Through the waveform display of the oscilloscope, the user can intuitively understand the working status of the equipment, and then accurately evaluate and diagnose its performance; the multi-channel resistor 504 is a precision instrument that can measure multiple resistance values ​​at the same time. Its signal output end is connected to the signal input end of the oscilloscope 503, realizing real-time transmission and recording of data. The application of the multi-channel resistor 504 enables the system to measure the resistance of multiple devices under test at the same time, further improving the test efficiency.

[0044] Furthermore, the auxiliary device 6 includes an installation tool 601, a grounding component 602, a cooling component 603 and a warning sign 604. The installation tool 601 includes a base and a clamp for installing and fixing the high-voltage device; the grounding component 602 is located at the bottom of the test bench to prevent electrical failures; the cooling component 603 includes a fan, a radiator and a water cooler to dissipate the heat generated by the test bench; the warning sign is affixed to the surface of the test bench to remind the operator to pay attention to safety matters.

[0045] In a specific embodiment, the installation tool 601 is composed of a solid base and a precision fixture. The base ensures the stability and reliability of the entire device, while the fixture is specifically used to install and fix various types of high voltage devices. By accurately controlling the position and pressure of the fixture, the stability and safety of the high voltage device during the test can be ensured; the grounding component 602 is located at the bottom of the auxiliary device. Its main function is to prevent electrical failures. When testing the high voltage device, static electricity and electromagnetic interference may be generated due to the flow of current. If these interferences are not eliminated in time, they may affect the test results and even cause harm to the operator. The grounding component 602 can effectively introduce these interferences into the earth, thereby ensuring the safety and stability of the test environment; the cooling component 603 is an important part of the auxiliary device, which includes multiple components such as a fan, a radiator, and a water cooler. During the test, a large amount of heat will be generated due to the flow of current and the operation of the equipment. If this heat cannot be dissipated in time, it will not only affect the performance and life of the equipment, but may also affect the test results. The cooling component 603 dissipates the heat into the air through the fan and the radiator, and uses the water cooler to transfer the heat to the external environment, so as to maintain the stable operation of the equipment and the accuracy of the test results; the warning sign 604 is one of the safety measures of the auxiliary device. It is pasted on the surface of the test bench to clearly remind the operator to pay attention to safety matters. These signs include but are not limited to "high voltage danger", "do not touch", "keep dry", etc., which are intended to remind the operator to always be vigilant when conducting tests and follow safe operating procedures to ensure the safety of themselves and others.

[0046] The technical solution of the utility model can be reasonably modified, replaced by equivalents, improved, etc. according to the professional knowledge and actual needs of technicians. As long as these modifications, equivalent replacements and improved measures are in line with the spirit and principles of the utility model, they should also be included in the protection scope of the utility model.

Claims

1. A high voltage electrical appliance comprehensive test bench, characterized in that: It comprises a power supply module (1), an operation control module (2), a connection component (3), a multimeter (4), a test device (5) and an auxiliary device (6), wherein: A power module (1), used to provide a stable power supply required for testing; An operation control module (2), used to realize the interaction between the user and the test bench; A connecting assembly (3) is used to connect the high-voltage electrical appliance to be tested with a test point of the test bench; Multimeter (4), used to measure the electrical appliances in contact; A testing device (5), used to test the performance of the high voltage electrical appliance; Auxiliary devices (6) are used to ensure that the test bench operates in a safe working environment; The power supply module (1) is located on the outer surface of the test bench, the operation control module (2) is located above the test bench, the connection assembly (3) is located at the connection point of each device, the multimeter (4) is located to the right of the operation control module (2), the test device (5) is located to the right of the operation control module (2), and the auxiliary device (6) is distributed inside and on the surface of the test bench.

2. A high voltage electrical appliance comprehensive test bench according to claim 1, characterized in that: The power module (1) comprises a frequency converter (101), a monitoring device (102), a power protection device (103) and a power interface (104); the signal output end of the frequency converter (101) is connected to the signal input end of the main power supply line for adjusting the frequency of the power supply; the monitoring device (102) is located at the upper right of the test bench and is used for operators to observe and record power supply data information; the power protection device (103) is located at the main power inlet of the test bench and is cut off in time when an abnormality occurs in the power supply; the power interface (104) is located at the bottom of the test bench and is connected to an external power supply to achieve normal operation of the test bench.

3. A high voltage electrical appliance comprehensive test bench according to claim 2, characterized in that: The operation control module (2) comprises a display (201), a handle (202), a control button (203) and an emergency stop button (204); the display (201) uses an LED display screen to display parameter information during the test process; the display (201) is located at the upper left of the test bench; the handle (202) is located on the right side of the monitoring device (102) and is used to execute the actions of each device; the control button (203) is located below the monitoring device (102) and is used to issue control instructions; the emergency stop button (204) is located on the right side of the control button (203) as a safety device and is used to stop all actions of the test bench.

4. A high-voltage electrical appliance comprehensive test bench according to claim 1, characterized in that: The connection assembly (3) comprises a cable (301), a sensor (302), a connector (303) and an insulating cover (304); the cable (301) uses a copper conductor material to achieve transmission of an electric energy signal; the sensor (302) converts a detected physical quantity into an electric signal; the signal output end of the sensor (302) is connected to the signal input end of the connector (303); the signal output end of the connector (303) is connected to the input end of the multimeter (4) for connecting and disconnecting the transmission of the cable; the insulating cover (304) uses a silicone rubber material to isolate and protect the circuit; the insulating cover (304) is located at the cable connection.

5. A high-voltage electrical appliance comprehensive test bench according to claim 1, characterized in that: The multimeter (4) comprises a switching power supply (401), a digital display screen (402), a selection switch (403), an input terminal (404) and a function key (405); the switching power supply (401) is packaged on the side of the multimeter (4) to control the connection of the power supply; the digital display screen (402) is located above the surface of the multimeter (4) and is used for a user to read the measurement result; the selection switch (403) is located in the middle of the surface of the multimeter (4) and is used to adjust the range; the input terminal (404) is located on the side of the multimeter (4) and is used to connect different circuits to be tested; the function key is located at the bottom of the front of the multimeter (4) and is used to activate and deactivate additional functions.

6. A high-voltage electrical appliance comprehensive test bench according to claim 1, characterized in that: The testing device (5) comprises a PLC controller (501), a transformer (502), an oscilloscope (503) and a multi-channel resistor (504); the PLC controller (501) is located inside the test bench and is used to realize automatic detection of the device to be detected; the transformer (502) changes the current and voltage through electromagnetic induction; the oscilloscope (503) is located on the right side of the operation control module (2) and is used to analyze and diagnose the performance of the high-voltage electrical appliance; the limited output end of the multi-channel resistor (504) is connected to the signal input end of the oscilloscope (503) and is used to measure and record multiple resistance values.

7. A high voltage electrical appliance comprehensive test bench according to claim 1, characterized in that: The auxiliary device (6) includes an installation tool (601), a grounding component (602), a cooling component (603) and a warning sign (604). The installation tool (601) includes a base and a clamp for installing and fixing the high voltage device; the grounding component (602) is located at the bottom of the test bench to prevent electrical failures; the cooling component (603) includes a fan, a radiator and a water cooler to dissipate the heat generated by the test bench; the warning sign is pasted on the surface of the test bench to remind operators to pay attention to safety matters.

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