Electroscope power supply reliability test device

Abstract

The utility model provides an electroscope power supply reliability test device comprising a high-voltage box which is provided with a to-be-tested electroscope potential so as to install a to-be-tested electroscope, and a circuit which provides a test voltage for the to-be-tested electroscope through the high-voltage box; and the control box is electrically connected with the high-voltage box so as to control timing and on-off of a circuit for providing the test voltage by the high-voltage box. The reliability test device can automatically test the reliability of the electroscope power supply, is simple to use and convenient to operate, improves the flexibility and accuracy of the reliability test of the electroscope power supply, and improves the automation degree.

Description

Technical Field

[0001] The utility model relates to the technical field of live-line voltage detection test, in particular to a test device for the power supply reliability of a voltage detector. Background Art

[0002] Article 6.2.6 of DL / T740-2014 "Capacitive Voltage Detector" stipulates that capacitive voltage detectors with built-in power supplies must undergo power supply reliability tests. There are also specific regulations in the standards for power supply reliability test conditions and test methods, mainly including the following points: For voltage detectors with built-in power supplies and a nominal voltage range, the test should be carried out at the lower nominal voltage. The test voltage should be 1.1 times the starting voltage. The switch of the voltage detector should be turned on, and an AC voltage source should be applied to the contact electrode. After the test voltage is disconnected for 1 minute, it should be reconnected for 2 minutes, and this cycle should be repeated. At the same time, check the status of the "voltage present" indication signal until one of the following situations occurs, and the test is considered to have passed: The indication of the voltage detector no longer works; The power supply of the voltage detector is exhausted and automatically shuts down.

[0003] During the actual test of the power supply feasibility of the voltage detector, it often requires two people to cooperate. One person observes and times, and the other person disconnects or connects the power supply, which consumes the labor cost of multiple people and has extremely low work efficiency. Summary of the Utility Model

[0004] In view of the above-mentioned disadvantages of the prior art, the purpose of the present utility model is to provide a test device for the power supply reliability of a voltage detector, which is used to solve the problem that in the actual test of the power supply feasibility of the voltage detector in the prior art, it often requires two people to cooperate. One person observes and times, and the other person disconnects or connects the power supply, which consumes the labor cost of multiple people and has extremely low work efficiency.

[0005] To achieve the above object and other related objects, the present utility model provides a test device for the power supply reliability of a voltage detector, including: a high-voltage box, which is provided with a potential to be tested to install the voltage detector to be tested, and a circuit for providing a test voltage to the voltage detector to be tested through the high-voltage box; and a control box, which is electrically connected to the high-voltage box to control the timing and on-off of the circuit for providing the test voltage by the high-voltage box.

[0006] In an embodiment of the present utility model, the voltage magnitude of the test voltage provided by the high-voltage box is less than the voltage magnitude of the control voltage provided by the control box.

[0007] In an embodiment of the present utility model, the control voltage provided by the control box is lower than the human body safety voltage.

[0008] In an embodiment of the present utility model, the high-voltage box includes: a first protective box, and an isolation transformer, a voltage regulator, a step-up transformer, and a voltage divider respectively disposed inside the first protective box; the output end of the isolation transformer is respectively connected to the input end of the voltage regulator, the output end of the voltage regulator is respectively connected to the input end of the step-up transformer, the output end of the step-up transformer is respectively connected to the input end of the voltage divider, and the output end of the voltage divider is connected to the potential to be tested; wherein, the control end of the control box is electrically connected to the connection circuit between the isolation transformer and the voltage regulator.

[0009] In an embodiment of the present utility model, the high-voltage box further includes: a voltmeter, and both ends of the voltmeter are respectively electrically connected to the input end and the output end of the voltage divider to display the output voltage value of the voltage divider.

[0010] In an embodiment of the present utility model, the voltage divider includes: a first voltage-dividing resistor and a second voltage-dividing resistor, the first voltage-dividing resistor and the second voltage-dividing resistor are connected in series with each other, and the input end and the output end after series connection are respectively connected to the two output ends of the step-up transformer, the resistance value of the first voltage-dividing resistor is greater than that of the second voltage-dividing resistor, the first end of the voltmeter is connected between the first voltage-dividing resistor and the second voltage-dividing resistor, and the second end of the voltmeter is connected to the output end of the second voltage-dividing resistor.

[0011] In an embodiment of the present utility model, the potential to be tested includes: a live-line detecting joint, and the live-line detecting joint is connected to the first output end of the voltage divider; and a grading ring, and the grading ring is connected to the second output end of the voltage divider; wherein, the electrical appliance to be tested is inserted into the center of the grading ring, and the live-line detecting end of the electrical appliance to be tested is in contact with the live-line detecting joint.

[0012] In an embodiment of the present utility model, the control box includes: a second protective box, and a clock module, a single-chip microcomputer, a touch screen and a relay respectively disposed inside the second protective box, the clock module is electrically connected to the single-chip microcomputer, the single-chip microcomputer is electrically connected to the touch screen, and the single-chip microcomputer is electrically connected to the relay; wherein, the single-chip microcomputer executes turning on the relay, turning off the relay and maintaining the current state of the relay according to the signal output by the clock module, the single-chip microcomputer also receives the control signal sent by the touch screen and executes corresponding start, stop and clear actions, and the single-chip microcomputer controls to send the on and off times of the relay and the experimental execution time data to the touch screen.

[0013] In an embodiment of the present utility model, both the first protective box and the second protective box are structural members made of insulating materials, and the voltage regulator is a small autotransformer.

[0014] In an embodiment of the present utility model, the relay is electrically connected to the connection circuit between the isolation transformer and the voltage regulator.

[0015] Advantages of the present utility model: A power reliability test device for an electroscope proposed by the present utility model divides the entire reliability test device into two parts by using a high-voltage box and a control box. That is, after installing the electroscope to be tested at the potential to be tested, a circuit that uses the high-voltage box to provide a test voltage for the electroscope to be tested, and a control circuit that uses the control box to provide the on-off control for the test voltage circuit of the high-voltage box, so as to achieve the method of designing control timing and automatically controlling the power on or off by using the control box, greatly improving the working efficiency when testing the electroscope to be tested. Specifically, by using the first protective box, electrical insulation isolation treatment can be carried out on the circuit composed of an isolation transformer, a voltage regulator, a step-up transformer, and a voltage divider with a voltage exceeding the human body safety voltage, thus ensuring the safety when testing the electroscope to be tested in the potential to be tested inside the first protective box. Similarly, by using the second protective box to achieve insulation isolation of the clock module, single-chip microcomputer, touch screen, and relay, the safety during the use of the entire test device can be ensured. By using the setting of the isolation transformer, the 220V AC mains can be isolated from the high-voltage test power supply, preventing the reverse intrusion of the high-voltage test electricity into the 220V AC mains and causing safety accidents. Moreover, after the high-voltage test electricity is isolated from the 220V AC mains, a "floating ground" effect is generated, and the test personnel will not get an electric shock when single-point contacting any circuit after isolation, ensuring the safety of the test. Through the above reliability automatic test device, it is simple to use and convenient to operate, improving the flexibility and accuracy of the electroscope power reliability test and the degree of automation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic structural diagram of the test device of the present utility model.

[0017] DESCRIPTION OF REFERENCE NUMERALS

[0018] High-voltage box 1; Potential to be tested 2; Control box 3; Isolation transformer 12; Voltage regulator 13; Step-up transformer 14; Voltage divider 15; Electroscope connector 21; Uniform voltage ring 22; Clock module 31; Single-chip microcomputer 32; Touch screen 33; Relay 34. SPECIFIC EMBODIMENTS

[0019] The following specific examples illustrate the embodiments of the present utility model. Those skilled in the art can easily understand other advantages and effects of the present utility model from the content disclosed in this specification. The present utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present utility model. It should be noted that, without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0020] It should be noted that the illustrations provided in the following embodiments only schematically illustrate the basic concept of the present invention. Therefore, only the components related to the present invention are shown in the drawings, rather than being drawn according to the number, shape, and size of the components in actual implementation. The type, quantity, and ratio of each component in actual implementation can be arbitrarily changed, and the component layout type may also be more complex.

[0021] In the following description, numerous details are explored to provide a more thorough explanation of the embodiments of the present invention. However, it is obvious to those skilled in the art that the embodiments of the present invention can be implemented without these specific details. In other embodiments, well-known structures and devices are shown in the form of block diagrams rather than in detail to avoid making the embodiments of the present invention difficult to understand.

[0022] Please refer to Figure 1 , the present invention provides a test device for the reliability of the electroscope power supply, including: a high-voltage box 1, the high-voltage box 1 is provided with a potential to be tested 2 for installing the electrical appliance to be tested, and a circuit for providing a test voltage to the electrical appliance to be tested through the high-voltage box 1; and a control box 3, which is electrically connected to the high-voltage box 1 to control the timing and on / off of the circuit for providing the test voltage by the high-voltage box 1.

[0023] It is not difficult to find from the above content that during the process of testing the reliability of the electroscope power supply, it is carried out by using a reliability test device. The test device is divided into two parts: a high-voltage box 1 and a control box 3. Among them, a potential to be tested 2 is also provided in the high-voltage box 1 for installing the electrical appliance to be tested to conduct a reliability test. Specifically, a circuit for providing a test voltage to the electrical appliance to be tested is provided by the high-voltage box 1, and the control box 3 controls the on / off of the circuit for providing the test voltage by the high-voltage box 1, thereby realizing automatic timing while also realizing the automatic disconnection and connection of the power supply, improving the working efficiency during the reliability test.

[0024] As Figure 1 shown, the voltage magnitude of the test voltage provided by the high-voltage box 1 is less than the voltage magnitude of the control voltage provided by the control box 3. In this embodiment, as the circuit for providing the test voltage, the voltage provided by the high-voltage box 1 is greater than the voltage magnitude of the control voltage provided by the control box 3 with respect to the control voltage provided by the control box 3.

[0025] Preferably, the control voltage provided by the control box 3 is lower than the human body safety voltage. In this embodiment, during the operation of the control box 3, it only needs to provide a circuit control function for the high-voltage box 1, so its overall voltage level can be lower than the human body safety voltage. And the high-voltage box 1 is a circuit for providing the test voltage, and its overall voltage needs to be higher than the human body safety voltage.

[0026] Among them, the high-voltage box 1 includes: a first protective box, and an isolation transformer 12, a voltage regulator 13, a step-up transformer 14, and a voltage divider 15 respectively arranged in the first protective box; the output end of the isolation transformer 12 is respectively connected to the input end of the voltage regulator 13, the output end of the voltage regulator 13 is respectively connected to the input end of the step-up transformer 14, the output end of the step-up transformer 14 is respectively connected to the input end of the voltage divider 15, and the output end of the voltage divider 15 is connected to the potential to be tested 2; among them, the control end of the control box 3 is electrically connected to the connection circuit between the isolation transformer 12 and the voltage regulator 13.

[0027] In an embodiment of the present utility model, the high-voltage box 1 serves as the high-voltage part, and its entire circuit part is installed in the first protective box to achieve isolation treatment using the first protective box. Specifically, an isolation transformer 12, a voltage regulator 13, a step-up transformer 14, and a voltage divider 15 are respectively arranged in the first protective box. When connecting 220V AC mains power to the high-voltage box 1, the isolation transformer 12 isolates the 220V AC mains power from the high-voltage test power supply to prevent the high-voltage test electricity from reversely stringing into the 220V AC mains power and causing a safety accident. After the high-voltage test electricity is isolated from the 220V AC mains power, a "floating ground" effect is generated, and the tester will not get an electric shock when single-point contacting any circuit after isolation, thus ensuring the safety of the test. The voltage regulator 13 is used to adjust the input voltage of the step-up transformer 14 so that the test voltage output by the step-up transformer 14 meets the standard requirements. The step-up transformer 14 is used to boost the low voltage input by the voltage regulator 13 to a high voltage, and the output voltage of the step-up transformer 14 can be, for example, 1 - 150 kV. The voltage divider 15 realizes reducing the 1 - 150 kV high-voltage signal output by the step-up transformer 14 to a 1 - 150V low-voltage signal output in proportion through the principle of resistor series voltage division.

[0028] In addition, the high-voltage box 1 further includes: a voltmeter 16, and both ends of the voltmeter 16 are respectively electrically connected to the input end and the output end of the voltage divider 15 to display the output voltage value of the voltage divider 15. In this embodiment, the voltmeter 16 can display the voltage value output by the voltage divider 15, and has the advantages of high contrast, low power consumption, extremely high response speed, etc.

[0029] Specifically, the voltage divider 15 includes: a first voltage-dividing resistor 151 and a second voltage-dividing resistor 152. The first voltage-dividing resistor 151 and the second voltage-dividing resistor 152 are connected in series with each other, and the input end and the output end after series connection are respectively connected to the two output ends of the step-up transformer 14. The resistance value of the first voltage-dividing resistor 151 is greater than that of the second voltage-dividing resistor 152. The first end of the voltmeter 16 is connected between the first voltage-dividing resistor 151 and the second voltage-dividing resistor 152, and the second end of the voltmeter 16 is connected to the output end of the second voltage-dividing resistor 152.

[0030] In an embodiment of the present invention, the voltage divider 15 can be equivalent to two resistors connected in series, that is, the first voltage-dividing resistor 151 and the second voltage-dividing resistor 152 are connected in series between the two output terminals of the step-up transformer 14. The resistance value of the first voltage-dividing resistor 151 is greater than that of the second voltage-dividing resistor 152, and the resistance difference between the two is relatively large. Further, according to the principle of voltage division of series resistors, a high-voltage signal of 1 to 150 kV can be scaled down proportionally to a low-voltage signal of 1 to 150 V for output.

[0031] Further, the potential to be tested 2 includes: a voltage-testing connector 21, which is connected to the first output terminal of the voltage divider 15; and a grading ring 22, which is connected to the second output terminal of the voltage divider 15; wherein, the electrical appliance to be tested is inserted into the center of the grading ring 22, and the voltage-testing end of the electrical appliance to be tested is in contact with the voltage-testing connector 21. In this embodiment, when the electrical appliance to be tested is installed, the indicator of the electrical appliance to be tested is placed at the potential to be tested 2. And, the voltage-testing connector 21 is in contact with the voltage-testing end of the electrical appliance to be tested, and the indicator of the electrical appliance to be tested is located at the center of the grading ring 22, providing a uniform electric field environment for the indicator of the electrical appliance to be tested, so that the voltage-testing end of the electrical appliance to be tested can correctly start when it comes into contact with the voltage-testing connector 21 with a high-voltage signal.

[0032] Specifically, the control box 3 includes: a second protective box, and a clock module 31, a single-chip microcomputer 32, a touch screen 33 and a relay 34 respectively arranged in the second protective box. The clock module 31 is electrically connected to the single-chip microcomputer 32, the single-chip microcomputer 32 is electrically connected to the touch screen 33, and the single-chip microcomputer 32 is electrically connected to the relay 34; wherein, the single-chip microcomputer 32 executes turning on the relay 34, turning off the relay 34 and maintaining the current state of the relay 34 according to the signal output by the clock module 31. The single-chip microcomputer 32 also receives the control signal sent by the touch screen 33 and executes corresponding start, stop and clear actions. The single-chip microcomputer 32 controls to send the on and off times of the relay 34 and the experimental execution time data to the touch screen 33.

[0033] In an embodiment of the present utility model, the first protective box can be used to protect the clock module 31, the single-chip microcomputer 32, the touch screen 33, and the relay 34. The single-chip microcomputer 32 determines whether to turn on (off) the relay or maintain the current state of the relay 34 according to the signal output by the clock module 31; receives the control signal sent by the touch screen 33 and executes corresponding actions (start, stop, clear, etc.); sends the data of the number of times the relay 34 is turned on (off) and the test execution time to the touch screen 33. The relay 34 serves as an execution element for the on-off of the circuit of the high-voltage box 1. When the relay 34 is attracted, the circuit inside the high-voltage box 1 is turned on, and high voltage is output, and the electrical appliance to be tested emits sound and light indications. When the relay 34 is released, the circuit inside the high-voltage box is disconnected. The touch screen 33 serves as a human-computer interaction interface, and when an icon on the touch screen is clicked, an instruction (start, stop, clear, etc.) can be sent to the single-chip microcomputer. In addition, the data of the number of times the relay 34 is turned on (off) and the test execution time sent by the single-chip microcomputer 32 can also be displayed. The test technical parameters can be: power supply: 220V single-phase alternating current; working environment: -20°C to 40°C, one standard atmosphere; on (off) power counting range: 0 to 65535 times; on (off) power time setting range: 0 to 65535 seconds; running time display range: 0 to 255 days; voltage output range: 1 to 150 kV.

[0034] Preferably, both the first protective box and the second protective box are structural members made of insulating materials, and the voltage regulator 13 is a small autotransformer.

[0035] Further, the relay 34 is electrically connected to the connection circuit between the isolation transformer 12 and the voltage regulator 13. By connecting the relay 34 to the connection circuit between the isolation transformer 12 and the voltage regulator 13, the relay 34 can be used as an execution element for the on-off of the circuit of the high-voltage box 1. When the relay 34 is attracted, the circuit inside the high-voltage box 1 is turned on, and high voltage is output, and the electrical appliance to be tested emits sound and light indications.

[0036] In a preferred embodiment of the present utility model, a method for testing the reliability of the power supply of an electroscope is further provided, including: a) Turning on the power supply of the device. b) Placing the indicator of the electroscope to be tested into the potential 2 to be tested. c) Rotating the voltage adjustment knob on the voltage regulator 13 to adjust the voltage to 1.1 times the starting voltage. At this time, the indicator of the electroscope to be tested should give an audible and visual indication of "voltage present". d) Clicking on the gear icon in the upper left corner of the main interface of the touch screen to enter the setting interface, then clicking on the clear data button to clear the data of the previous test, checking and confirming that the on (off) time setting of the relay 34 meets the standard requirements, and clicking on the arrow icon in the upper left corner of the touch screen 33 to return to the main interface after the clearing is completed. e) Clicking on the start button on the main interface of the touch screen 33 to start the test. During the test, the stop button can be pressed to abort the test (the start and stop buttons are in the same position on the main interface. Due to the interlock relationship, the stop button will only be displayed after the start button is pressed). After the test is aborted, the test data will be recorded inside the single-chip microcomputer and will be retained until the next data clearing (it can also be retained after power-off). f) After the test is completed, taking out the indicator of the electroscope to be tested and turning off the power supply of the test device.

[0037] In summary, the utility model divides the entire reliability test device into two parts by using the high-voltage box 1 and the control box 3. That is, after installing the electrical appliance to be tested at the potential to be tested 2, a circuit for providing a test voltage for the electrical appliance to be tested is formed by using the high-voltage box 1, and a control circuit for controlling the on-off of the test voltage circuit of the high-voltage box is formed by using the control box 3. Thus, by using the control timing and the automatic control of power on or off designed by the control box 3, the working efficiency during the test of the electrical appliance to be tested is greatly improved. Specifically, by using the first protective box, electrical insulation isolation treatment can be carried out on the circuit composed of the isolation transformer 12, the voltage regulator 13, the step-up transformer 14, and the voltage divider 15, which exceeds the human body's safe voltage, thereby ensuring the safety during the test when the electrical appliance to be tested is installed in the potential to be tested 2 inside the first protective box. Similarly, by using the second protective box to achieve electrical insulation isolation of the clock module 31, the single-chip microcomputer 32, the touch screen 33, and the relay 34, the safety during the use of the entire test device can be ensured. By using the isolation transformer 12, the 220V AC mains can be isolated from the high-voltage test power supply, preventing the reverse series connection of the high-voltage test electricity into the 220V AC mains and causing safety accidents. Moreover, after the high-voltage test electricity is isolated from the 220V AC mains, a "floating ground" effect is generated, and the test personnel will not get an electric shock when single-point contacting any circuit after isolation, ensuring the safety of the test. And by controlling the disconnection of the circuit inside the high-voltage box 1 through the clock module 31, the single-chip microcomputer 32, the touch screen 33, and the relay 34, it can also be realized that the clock module 31 is the time signal source of the entire device, and the single-chip microcomputer 32 can judge whether to turn on (off) the relay 34 or maintain the current state of the relay 34 according to the signal output by the clock module 31. And when the relay 34 is attracted, the circuit inside the high-voltage box 1 is turned on, and a high voltage is output, and the electrical appliance for testing emits sound and light indication; when the relay 34 is released, the circuit inside the high-voltage box 1 is disconnected. The single-chip microcomputer 32 receives the control signal sent by the touch screen 33 and executes corresponding actions (start, stop, clear, etc.); and sends the data of the on (off) times of the relay 34 and the test execution time to the touch screen 33. By clicking the icon on the touch screen 33, an instruction (start, stop, clear, etc.) can be sent to the single-chip microcomputer 32; in addition, the data of the on (off) times of the relay 34 and the test execution time sent by the single-chip microcomputer 32 can also be displayed. Therefore, the utility model effectively overcomes various shortcomings in the prior art and has high industrial utilization value.

[0038] The above embodiments are only illustrative of the principles and effects of the present utility model, and are not intended to limit the present utility model. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present utility model. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field concerned without departing from the spirit and technical idea disclosed by the present utility model should still be covered by the claims of the present utility model.

Claims

1. A test device for the reliability of a tester power supply, characterized in that: include: A high-voltage box (1), the high-voltage box (1) being provided with a potential to be tested (2) for installing the electrical appliance to be tested, and a circuit for providing a test voltage to the electrical appliance to be tested through the high-voltage box (1); as well as A control box (3) is electrically connected to the high-voltage box (1) to control the timing and on-off of the circuit for providing the test voltage of the high-voltage box (1).

2. The electroscope power supply reliability test device according to claim 1, characterized in that: The voltage magnitude of the test voltage provided by the high-voltage box (1) is smaller than the voltage magnitude of the control voltage provided by the control box (3).

3. The electroscope power supply reliability test device according to claim 2, characterized in that: The control voltage provided by the control box (3) is lower than the safety voltage for the human body.

4. The electroscope power supply reliability test device according to claim 1, characterized in that: The high-voltage box (1) comprises: A first protection box, and an isolation transformer (12), a voltage regulator (13), a step-up transformer (14), and a voltage divider (15) respectively arranged in the first protection box; the output end of the isolation transformer (12) is respectively connected to the input end of the voltage regulator (13), the output end of the voltage regulator (13) is respectively connected to the input end of the step-up transformer (14), the output end of the step-up transformer (14) is respectively connected to the input end of the voltage divider (15), and the output end of the voltage divider (15) is connected to the potential to be tested (2); Wherein, the control end of the control box (3) is electrically connected to the connection circuit between the isolation transformer (12) and the voltage regulator (13).

5. The electroscope power supply reliability test device according to claim 4, characterized in that: The high-voltage box (1) also includes: A voltmeter (16), wherein two ends of the voltmeter (16) are respectively electrically connected to the input end and the output end of the voltage divider (15) to display the output voltage value of the voltage divider (15).

6. The electroscope power supply reliability test device according to claim 5, characterized in that: The voltage divider (15) comprises: A first voltage-dividing resistor (151) and a second voltage-dividing resistor (152), wherein the first voltage-dividing resistor (151) and the second voltage-dividing resistor (152) are connected in series with each other, and the input end and the output end of the series connection are respectively connected to the two output ends of the step-up transformer (14), the resistance value of the first voltage-dividing resistor (151) is greater than the resistance value of the second voltage-dividing resistor (152), the first end of the voltmeter (16) is connected between the first voltage-dividing resistor (151) and the second voltage-dividing resistor (152), and the second end of the voltmeter (16) is connected to the output end of the second voltage-dividing resistor (152).

7. The electroscope power supply reliability test device according to claim 4, characterized in that: The potential to be tested (2) comprises: An electrical testing connector (21), the electrical testing connector (21) being connected to a first output end of the voltage divider (15); and A voltage equalizing ring (22), the voltage equalizing ring (22) being connected to the second output end of the voltage divider (15); The electrical appliance to be tested is inserted into the center of the voltage-equalizing ring (22), and the electrical testing end of the electrical appliance to be tested is in contact with the electrical testing connector (21).

8. The electroscope power supply reliability test device according to claim 4, characterized in that: The control box (3) comprises: A second protective box, and a clock module (31), a single-chip computer (32), a touch screen (33) and a relay (34) respectively arranged in the second protective box, wherein the clock module (31) is electrically connected to the single-chip computer (32), the single-chip computer (32) is electrically connected to the touch screen (33), and the single-chip computer (32) is electrically connected to the relay (34); The single-chip microcomputer (32) switches on the relay (34), switches off the relay (34) and maintains the current state of the relay (34) according to the signal output by the clock module (31); the single-chip microcomputer (32) also receives a control signal from the touch screen (33) and performs corresponding start, stop and reset actions; the single-chip microcomputer (32) controls the number of times the relay (34) is switched on and off, as well as experimental execution time data, to be sent to the touch screen (33).

9. The electroscope power supply reliability test device according to claim 8, characterized in that: The first protection box and the second protection box are both structural members made of insulating materials, and the voltage regulator (13) is a small autotransformer.

10. The electroscope power supply reliability test device according to claim 9, characterized in that: The relay (34) is electrically connected to a connection circuit between the isolation transformer (12) and the voltage regulator (13).

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