Test fixture for withstand voltage tester and test method thereof

Abstract

The invention discloses a test fixture for a withstand voltage tester and a test method thereof. The test fixture for the withstand voltage tester comprises a resistor module and a binding post module, the equivalent resistor R1, the equivalent resistor R2, the equivalent resistor R3, the equivalent resistor R4, the equivalent resistor R5 and the equivalent resistor R6 are connected in series through wires, the equivalent resistor R1 is connected with the seventh copper binding post, and the equivalent resistor R6 is connected with the eighth copper binding post; the first copper binding post, the second copper binding post and the third copper binding post are connected in series through wires, the first copper binding post is connected with the seventh copper binding post, the fourth copper binding post is connected with the eighth copper binding post, and a wire is connected between the equivalent resistor R1 and the equivalent resistor R2 to be connected with the sixth copper binding post. And a lead is connected between the equivalent resistor R3 and the equivalent resistor R4 and is connected with a fifth copper binding post. The test fixture provided by the invention can be used for checking the test accuracy of the withstand voltage tester.

Description

Technical Field

[0001] The present invention relates to the technical field of withstand voltage testers, and particularly to a test fixture for a withstand voltage tester and a test method thereof. Background Art

[0002] A withstand voltage tester is an instrument used to test the voltage withstand ability of objects, and it is widely used in the testing of various electrical devices, insulating materials, and insulating structures. The withstand voltage test is carried out by applying a specified AC or DC high voltage between the energized part and the non-energized part (generally the outer shell) of the electrical appliance to check the voltage withstand ability that the insulating material of the electrical appliance can bear. The main purpose of the withstand voltage test is to check the performance of the insulating material or insulating structure when it bears the working voltage or overvoltage, and then to test whether the insulation performance of the product equipment meets the safety standards. The withstand voltage test is crucial for ensuring the safety and reliability of electrical products because it can reveal the potential weaknesses of the insulating material and prevent safety accidents caused by overvoltage during the long-term operation of electrical appliances.

[0003] Currently, there is no calibration equipment for withstand voltage testers on the market. In order to verify the accuracy of their tests, it is necessary to design a test fixture and a test method thereof. Summary of the Invention

[0004] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a test fixture for a withstand voltage tester and a test method thereof to verify the accuracy of the withstand voltage tester test.

[0005] The purpose of the present invention is achieved by the following technical solutions:

[0006] A test fixture for a withstand voltage tester includes: a resistance module and a terminal block module;

[0007] The resistance module includes: equivalent resistors R1, R2, R3, R4, R5, and R6; the terminal block module includes: a first copper terminal, a second copper terminal, a third copper terminal, a fourth copper terminal, a fifth copper terminal, a sixth copper terminal, a seventh copper terminal, and an eighth copper terminal;

[0008] The equivalent resistors R1, R2, R3, R4, R5, and R6 are connected in series through wires. The equivalent resistor R1 is connected to the seventh copper terminal, and the equivalent resistor R6 is connected to the eighth copper terminal;

[0009] The first copper terminal, the second copper terminal, and the third copper terminal are connected in series through wires. The first copper terminal is connected to the seventh copper terminal, and the fourth copper terminal is connected to the eighth copper terminal. A wire is connected between the equivalent resistance R1 and the equivalent resistance R2 and is connected to the sixth copper terminal. A wire is connected between the equivalent resistance R3 and the equivalent resistance R4 and is connected to the fifth copper terminal.

[0010] In one embodiment, the equivalent resistances R1, R2, R3, R4, R5, and R6 have equal resistance values.

[0011] In one embodiment, the equivalent resistances R1, R2, R3, R4, R5, and R6 are respectively composed of the same number of metal film resistors connected in parallel.

[0012] In one embodiment, each equivalent resistance is composed of four metal film resistors connected in parallel, and the resistance value of each metal film resistor is 1 MΩ ± 1%.

[0013] In one embodiment, the voltage withstand limit value of each metal film resistor is 500 V.

[0014] In one embodiment, the test fixture for the withstand voltage tester further includes a bakelite box. The resistance module is arranged inside the bakelite box. The first copper terminal, the second copper terminal, the third copper terminal, the fourth copper terminal, the fifth copper terminal, and the sixth copper terminal are arranged outside the bakelite box. The seventh copper terminal and the eighth copper terminal are arranged inside the bakelite box.

[0015] A test method for a withstand voltage tester is to test the withstand voltage tester through the above-mentioned test fixture for the withstand voltage tester;

[0016] The current measurement return end of the withstand voltage tester is connected to the first copper terminal, or the second copper terminal, or the third copper terminal through a grounding test wire;

[0017] The remote control high-voltage rod of the withstand voltage tester is docked with the DC high-voltage output port and the remote control interface, and the metal end of the remote control high-voltage rod is connected to the fourth copper terminal, or the fifth copper terminal, or the sixth copper terminal.

[0018] In one embodiment,

[0019] The test fixture tests whether the withstand voltage tester starts the alarm function when outputting a voltage of 500 V and a test current range greater than 2 mA. The operation steps are as follows:

[0020] One end of the grounding test wire is connected to the current measurement return end of the withstand voltage tester, and the other end is connected to the first copper terminal;

[0021] One end of the remote control high-voltage rod is connected to the DC high-voltage output port and the remote control interface;

[0022] Select the 2 mA range of the withstand voltage tester, set the test time, press the "START" key, and then set the voltage to 500 V;

[0023] Place the metal end of the remote control high-voltage rod on the sixth copper terminal and start the test;

[0024] During the test time, if the withstand voltage tester alarms, it is determined that the withstand voltage tester is working properly in the 2 mA range; if there is no alarm when the timer reaches 0, it is determined that the withstand voltage tester is working abnormally in the 2 mA range.

[0025] In one of the embodiments,

[0026] The test fixture tests whether the withstand voltage tester starts the alarm function when outputting a voltage of 1500 V and a test current greater than 2 mA. The operation steps are as follows:

[0027] One end of the ground test wire is connected to the current measurement return end of the withstand voltage tester, and the other end is connected to the second copper terminal;

[0028] One end of the remote control high-voltage rod is connected to the DC high-voltage output port and the remote control interface;

[0029] Select the 2 mA range of the withstand voltage tester, set the test time, press the "START" key, and then set the voltage to 1500 V;

[0030] Place the metal end of the remote control high-voltage rod on the fifth copper terminal and start the test;

[0031] During the test time, if the withstand voltage tester alarms, it is determined that the withstand voltage tester is working properly in the 2 mA range; if there is no alarm when the timer reaches 0, it is determined that the withstand voltage tester is working abnormally in the 2 mA range.

[0032] In one of the embodiments,

[0033] The test fixture tests whether the withstand voltage tester starts the alarm function when outputting a voltage of 3000 V and a test current greater than 2 mA. The operation steps are as follows:

[0034] One end of the ground test wire is connected to the current measurement return end of the withstand voltage tester, and the other end is connected to the third copper terminal;

[0035] One end of the remote control high-voltage rod is connected to the DC high-voltage output port and the remote control interface;

[0036] Select the 2 mA range of the withstand voltage tester, set the test time, press the "START" key, and then set the voltage to 3000 V;

[0037] Place the metal end of the remote control high-voltage rod on the fourth copper terminal and start the test;

[0038] During the test time, if the withstand voltage tester alarms, it is determined that the withstand voltage tester is working properly in the 2 mA range; if there is no alarm when the timer reaches 0, it is determined that the withstand voltage tester is working abnormally in the 2 mA range.

[0039] In the present invention, by adjusting the resistance value of the equivalent resistor, it can be tested whether the withstand voltage tester can alarm normally when exceeding the range under different current test ranges; by adjusting the resistance value accuracy of the equivalent resistor, it can be tested how much range the withstand voltage tester can alarm normally when exceeding the range under different current test ranges, and the recognition accuracy of the withstand voltage tester can be tested. Description of the Drawings

[0040] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0041] Figure 1 It is a structural diagram of a test fixture for a withstand voltage tester according to an embodiment of the present invention;

[0042] Figure 2 For Figure 1 The exploded view of the test fixture for the withstand voltage tester shown;

[0043] Figure 3 For Figure 1 The internal connection diagram of the test fixture for the withstand voltage tester shown. Detailed Embodiments

[0044] To facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. The preferred embodiments of the present invention are shown in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0045] It should be noted that when an element is referred to as "fixed to" another element, it can be directly on the other element or there may be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation.

[0046] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this invention belongs. The terms used herein in the specification of this invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0047] Please refer to Figures 1 to 3 , the present invention discloses a test fixture 10 for a withstand voltage tester, including: a resistor module, a terminal module;

[0048] The resistor module includes: equivalent resistors R1, R2, R3, R4, R5, R6; the terminal module includes: a first copper terminal 100, a second copper terminal 200, a third copper terminal 300, a fourth copper terminal 400, a fifth copper terminal 500, a sixth copper terminal 600, a seventh copper terminal 700, an eighth copper terminal 800.

[0049] The equivalent resistors R1, R2, R3, R4, R5, R6 are connected in series by wires. The equivalent resistor R1 is connected to the seventh copper terminal 700, and the equivalent resistor R6 is connected to the eighth copper terminal 800.

[0050] The first copper terminal 100, the second copper terminal 200, and the third copper terminal 300 are connected in series by wires. The first copper terminal 100 is connected to the seventh copper terminal 700, the fourth copper terminal 400 is connected to the eighth copper terminal 800, and a wire is led out between the equivalent resistor R1 and the equivalent resistor R2 and connected to the sixth copper terminal 600, and a wire is led out between the equivalent resistor R3 and the equivalent resistor R4 and connected to the fifth copper terminal 500.

[0051] In the present invention, the resistance values of the equivalent resistors R1, R2, R3, R4, R5, R6 are equal.

[0052] Further, the equivalent resistors R1, R2, R3, R4, R5, and R6 are respectively composed of the same number of metal film resistors connected in parallel. Among them, each equivalent resistor is composed of four metal film resistors connected in parallel. The resistance value of each metal film resistor is 1 MΩ ± 1%, and the voltage withstand limit value of each metal film resistor is 500V.

[0053] In the present invention, the test fixture 10 for the withstand voltage tester further includes a bakelite box 20. The resistor module is arranged inside the bakelite box. The first copper terminal, the second copper terminal, the third copper terminal, the fourth copper terminal, the fifth copper terminal, and the sixth copper terminal are arranged outside the bakelite box, and the seventh copper terminal and the eighth copper terminal are arranged inside the bakelite box.

[0054] The present invention also discloses a test method for a withstand voltage tester, and the withstand voltage tester is tested by the above-mentioned test fixture 10 for the withstand voltage tester.

[0055] The current measurement return end of the withstand voltage tester is connected to the first copper terminal 100, or the second copper terminal 200, or the third copper terminal 300 through a ground test wire;

[0056] The remote control high-voltage rod of the withstand voltage tester is docked with the DC high-voltage output port and the remote control interface, and the metal end of the remote control high-voltage rod is connected to the fourth copper terminal 400, or the fifth copper terminal 500, or the sixth copper terminal 600.

[0057] Example 1

[0058] The test fixture tests whether the withstand voltage tester starts the alarm function when the output voltage is 500V and the test current range is greater than 2 mA. The operation steps are as follows:

[0059] One end of the ground test wire is connected to the current measurement return end of the withstand voltage tester, and the other end is connected to the first copper terminal;

[0060] One end of the remote control high-voltage rod is connected to the DC high-voltage output port and the remote control interface;

[0061] Select the 2 mA range of the withstand voltage tester, set the test time, press the "START" key, and then set the voltage to 500V;

[0062] Place the metal end of the remote control high-voltage rod on the sixth copper terminal and start the test;

[0063] During the test time, if the withstand voltage tester alarms, it is determined that the withstand voltage tester is working normally in the 2 mA range; if the timer reaches 0 and the test does not alarm, it is determined that the withstand voltage tester is working abnormally in the 2 mA range.

[0064] Example 2

[0065] The test fixture tests whether the withstand voltage tester activates the alarm function when outputting a voltage of 1500V and a test current greater than 2mA. The operation steps are as follows:

[0066] One end of the grounding test wire is connected to the current measurement return terminal of the withstand voltage tester, and the other end is connected to the second copper terminal block;

[0067] One end of the remote control high voltage rod is connected to the DC high voltage output port and the remote control interface;

[0068] Select the 2mA range of the withstand voltage tester, set the test time, press the "START" key, and then set the voltage to 1500V;

[0069] Place the metal end of the remote control high voltage rod on the fifth copper terminal block and start the test;

[0070] During the test time, if the withstand voltage tester alarms, it is determined that the withstand voltage tester is working properly in the 2mA range; if there is no alarm when the timer reaches 0, it is determined that the withstand voltage tester is malfunctioning in the 2mA range.

[0071] Embodiment III

[0072] The test fixture tests whether the withstand voltage tester activates the alarm function when outputting a voltage of 3000V and a test current greater than 2mA. The operation steps are as follows:

[0073] One end of the grounding test wire is connected to the current measurement return terminal of the withstand voltage tester, and the other end is connected to the third copper terminal block;

[0074] One end of the remote control high voltage rod is connected to the DC high voltage output port and the remote control interface;

[0075] Select the 2mA range of the withstand voltage tester, set the test time, press the "START" key, and then set the voltage to 3000V;

[0076] Place the metal end of the remote control high voltage rod on the fourth copper terminal block and start the test;

[0077] During the test time, if the withstand voltage tester alarms, it is determined that the withstand voltage tester is working properly in the 2mA range; if there is no alarm when the timer reaches 0, it is determined that the withstand voltage tester is malfunctioning in the 2mA range.

[0078] In the present invention, by adjusting the resistance value of the equivalent resistance, it can be tested whether the withstand voltage tester can normally alarm when exceeding the range in different current test ranges; by adjusting the resistance value accuracy of the equivalent resistance, it can be tested how much range the withstand voltage tester can normally alarm when exceeding the range in different current test ranges, and the recognition accuracy of the withstand voltage tester can be tested.

[0079] The embodiments described above merely represent several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all fall within the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the appended claims.

Claims

1. A test fixture for a withstand voltage tester, characterized in that: include: Resistor module, terminal module; The resistor module includes: an equivalent resistor R1, an equivalent resistor R2, an equivalent resistor R3, an equivalent resistor R4, an equivalent resistor R5, and an equivalent resistor R6; the terminal module includes: a first copper terminal, a second copper terminal, a third copper terminal, a fourth copper terminal, a fifth copper terminal, a sixth copper terminal, a seventh copper terminal, and an eighth copper terminal; The equivalent resistor R1, the equivalent resistor R2, the equivalent resistor R3, the equivalent resistor R4, the equivalent resistor R5 and the equivalent resistor R6 are connected in series through a wire, the equivalent resistor R1 is connected to the seventh copper terminal, and the equivalent resistor R6 is connected to the eighth copper terminal; The first copper terminal, the second copper terminal, and the third copper terminal are connected in series through a wire. The first copper terminal is connected to the seventh copper terminal, the fourth copper terminal is connected to the eighth copper terminal, a wire is connected between the equivalent resistor R1 and the equivalent resistor R2 and connected to the sixth copper terminal, and a wire is connected between the equivalent resistor R3 and the equivalent resistor R4 and connected to the fifth copper terminal.

2. The test fixture for a withstand voltage tester according to claim 1, characterized in that: The resistance values ​​of the equivalent resistor R1, the equivalent resistor R2, the equivalent resistor R3, the equivalent resistor R4, the equivalent resistor R5, and the equivalent resistor R6 are equal.

3. The test fixture for a withstand voltage tester according to claim 2, characterized in that: The equivalent resistor R1 , the equivalent resistor R2 , the equivalent resistor R3 , the equivalent resistor R4 , the equivalent resistor R5 , and the equivalent resistor R6 are respectively formed by connecting the same number of metal film resistors in parallel.

4. The test fixture for a withstand voltage tester according to claim 3, characterized in that: Each equivalent resistor is composed of four metal film resistors connected in parallel, and the resistance value of each metal film resistor is 1MΩ±1%.

5. The test fixture for a withstand voltage tester according to claim 4, characterized in that: The voltage withstand limit of each metal film resistor is 500V.

6. The test fixture for a withstand voltage tester according to claim 1, characterized in that: The test fixture for the voltage withstand tester also includes a bakelite box, the resistance module is arranged inside the bakelite box, the first copper terminal, the second copper terminal, the third copper terminal, the fourth copper terminal, the fifth copper terminal, and the sixth copper terminal are arranged outside the bakelite box, and the seventh copper terminal and the eighth copper terminal are arranged inside the bakelite box.

7. A testing method for a withstand voltage tester, characterized in that: Testing the withstand voltage tester by using the test fixture for the withstand voltage tester according to any one of claims 1 to 6; The current measurement return end of the withstand voltage tester is connected to the first copper terminal, the second copper terminal, or the third copper terminal through a grounding test line; The remote control high voltage rod of the withstand voltage tester is connected to the DC high voltage output port and the remote control interface, and the metal end of the remote control high voltage rod is connected to the fourth copper terminal, the fifth copper terminal, or the sixth copper terminal.

8. The testing method for a withstand voltage tester according to claim 7, characterized in that: The test fixture tests whether the voltage withstand tester starts the alarm function when the output voltage is 500V and the test current is greater than 2mA. The operation steps are as follows: One end of the grounding test wire is connected to the current measurement return terminal of the voltage withstand tester, and the other end is connected to the first copper terminal; One end of the remote control high voltage rod is connected to the DC high voltage output port and the remote control interface; Select the 2mA range of the withstand voltage tester, set the test time, press the "START" key, and then set the voltage to 500V; Place the metal end of the remote control high voltage rod on the sixth copper terminal and start the test; During the test time, if the withstand voltage tester alarms, it is determined that the withstand voltage tester is working normally under the 2mA range; if the test does not alarm when the timer reaches 0, it is determined that the withstand voltage tester is working abnormally under the 2mA range.

9. The testing method for a withstand voltage tester according to claim 7, characterized in that: The test fixture tests whether the voltage withstand tester starts the alarm function when the output voltage is 1500V and the test current is greater than 2mA. The operation steps are as follows: One end of the grounding test wire is connected to the current measurement return terminal of the voltage withstand tester, and the other end is connected to the second copper terminal; One end of the remote control high voltage rod is connected to the DC high voltage output port and the remote control interface; Select the 2mA range of the withstand voltage tester, set the test time, press the "START" key, and then set the voltage to 1500V; Place the metal end of the remote control high voltage rod on the fifth copper terminal and start the test; During the test time, if the withstand voltage tester alarms, it is determined that the withstand voltage tester is working normally under the 2mA range; if the test does not alarm when the timer reaches 0, it is determined that the withstand voltage tester is working abnormally under the 2mA range.

10. The testing method for a withstand voltage tester according to claim 7, characterized in that: The test fixture tests whether the voltage withstand tester starts the alarm function when the output voltage is 3000V and the test current is greater than 2mA. The operation steps are as follows: One end of the grounding test wire is connected to the current measurement return terminal of the voltage withstand tester, and the other end is connected to the third copper terminal; One end of the remote control high voltage rod is connected to the DC high voltage output port and the remote control interface; Select the 2mA range of the withstand voltage tester, set the test time, press the "START" key, and then set the voltage to 3000V; Place the metal end of the remote control high voltage rod on the fourth copper terminal and start the test; During the test time, if the withstand voltage tester alarms, it is determined that the withstand voltage tester is working normally under the 2mA range; if the test does not alarm when the timer reaches 0, it is determined that the withstand voltage tester is working abnormally under the 2mA range.

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