Withstand voltage test system

Abstract

The utility model discloses a withstand voltage test system, which comprises a tester, a protective cover and an electrical circuit, the tester is connected with a to-be-tested sample through the electrical circuit and is used for outputting test voltage to the electrical circuit, the protective cover comprises a base, a position switch and a cover body covering the base, the base is used for bearing the to-be-tested sample, and the position switch is arranged on the cover body. The position switch is electrically connected with the electrical circuit, when the cover body covers the base, the position switch is triggered to be closed, the electrical circuit is switched on, the tester outputs test voltage to the sample to be tested, and when the cover body does not cover the base, the position switch is triggered to be separated, the electrical circuit is switched off, and the tester stops outputting the test voltage to the sample to be tested. The protective cover is used for physically preventing a to-be-tested sample from splashing and hurting people after the to-be-tested sample is broken down in the withstand voltage test process, an electrical circuit is triggered to be connected or disconnected through the position switch so as to control voltage output of the tester, the safety performance of the withstand voltage test is improved, and the personal safety of a human body in the test process is protected.

Description

Technical Field

[0001] The embodiment of the utility model relates to the technical field of equipment detection, and in particular to a withstand voltage test system. Background Art

[0002] The insulation withstand voltage test can verify the insulation characteristics of the product. Insulation resistance test and withstand voltage test can be performed separately during the test. During the withstand voltage test, a high voltage needs to be applied to the test sample, and the high voltage can reach up to 6KV.

[0003] In the existing insulation withstand voltage test, a withstand voltage tester outputs a high voltage to the product to be tested, and the sample to be tested is usually placed on an exposed test bench. There is a risk of the sample to be touched by the human body, and there is a risk of the device splashing after the sample to be tested is broken down by the high voltage, which will cause harm to the human body. Utility Model Content

[0004] The purpose of the embodiment of the utility model is to provide a withstand voltage test system to solve the problem that the device splashes after the sample to be tested is broken down by high voltage in the existing withstand voltage test, causing human body harm. To solve the above problem, the embodiment of the utility model adopts the following technical solutions:

[0005] A withstand voltage test system comprises a tester, a protective cover and an electrical circuit;

[0006] The tester is connected to the sample to be tested via the electrical circuit, and is used to output a test voltage to the electrical circuit;

[0007] A protective cover, the protective cover comprising a base, a position switch and a cover body covered on the base, the base is used to carry the sample to be tested, and the position switch is electrically connected to the electrical circuit;

[0008] When the cover is placed on the base, the position switch is triggered to close, the electrical circuit is turned on, and the tester outputs a test voltage to the sample to be tested;

[0009] When the cover is not covered on the base, the position switch is triggered to separate, the electrical circuit is cut off, and the tester stops outputting the test voltage to the sample to be tested.

[0010] Optionally, the electrical circuit includes a power supply and a contactor, the contactor includes a normally open contact and a coil, the tester is connected to the sample to be tested via the normally open contact, and the power supply is connected to the coil via the position switch.

[0011] Optionally, the contactor is arranged outside the protective cover, and the contactor cover is provided with a protective cover.

[0012] Optionally, the tester further includes an enable command circuit, and when the enable command circuit is turned on, the tester stops outputting the test voltage, and when the enable command circuit is turned off, the tester outputs the test voltage;

[0013] The contactor further comprises a normally closed contact, and the normally closed contact is arranged in the enabling command circuit;

[0014] When the cover body is covered on the base, the normally closed contact is triggered to separate and the enabling command circuit is cut off; when the cover body is not covered on the base, the normally closed contact is triggered to close and the enabling command circuit is turned on.

[0015] Optionally, the base is an electrically insulating base, and the cover is a transparent electrically insulating cover.

[0016] Optionally, the cover body and the base are connected in a flippable manner.

[0017] Optionally, the protective cover further comprises a support rod, one end of which is movably connected to the cover body, and the other end of which is movably connected to the base.

[0018] Optionally, the position switch is arranged on a side wall of the cover body, and when the cover body is covered on the base, the base presses the position switch.

[0019] Optionally, the position switch is arranged on the base, and when the cover body is covered on the base, the side wall of the cover body presses the position switch.

[0020] Optionally, the position switch includes a first position switch and a second position switch, the first position switch and the second position switch are arranged at intervals on the base or the cover, and the power supply is connected to the coil via the first position switch and the second position switch in sequence.

[0021] The withstand voltage test of the embodiment of the utility model has the following beneficial effects:

[0022] The utility model discloses a withstand voltage test system comprising a tester, a protective cover and an electrical circuit, and the protective cover comprises a base, a position switch and a cover body covered on the base, the base is used to carry a sample to be tested, the position switch is electrically connected to the electrical circuit, when the cover body is covered on the base, the position switch is triggered to close, the electrical circuit is turned on, and the tester outputs a test voltage to the sample to be tested, and when the cover body is not covered on the base, the position switch is triggered to separate, the electrical circuit is turned off, and the tester stops outputting a test voltage to the sample to be tested. On the one hand, by setting the protective cover to cover the sample to be tested, it is possible to physically prevent the sample to be tested from being broken down and splashing and injuring people during the withstand voltage test. On the other hand, by setting the position switch and operating whether the protective cover covers the sample to be tested, the electrical circuit is triggered to be turned on or off, so as to control the tester to output or stop outputting the test voltage to the sample to be tested, thereby avoiding the output of the test voltage to the sample to be tested when the protective cover does not cover the sample to be tested, thereby improving the safety performance of the withstand voltage test by electrical means. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The utility model is further described in detail below based on the drawings and embodiments.

[0024] Figure 1 The figure is a schematic structural diagram of a voltage withstand test system according to an embodiment of the present invention.

[0025] Figure 2 The figure is a schematic structural diagram of a voltage withstand test system according to another embodiment of the present invention.

[0026] Figure 3 This is an electrical circuit diagram of a position switch and a coil in an embodiment of the utility model;

[0027] Figure 4 The schematic diagram of the circuit of the normally open contact and the normally closed contact of the contactor in the electrical circuit in the embodiment of the utility model;

[0028] Figure 5 A schematic diagram of adding a protective cover to the contactor in the embodiment of the utility model;

[0029] Figure 6 This is a schematic diagram of the flip structure of the protective cover in the embodiment of the utility model;

[0030] Figure 7 It is a schematic diagram of the structure of the protective cover provided with a support rod in an embodiment of the utility model.

[0031] In the attached figure:

[0032] 1. Tester; 11. Enable command circuit; 2. Protective cover; 21. Base; 22. Cover body; 23. Position switch; 231. First position switch; 232. Second position switch; 24. Hinge; 25. Support rod; 26. Handle; 3. Electrical circuit; 31. Contactor; 311. Normally open contact; 312. Normally closed contact; 313. Protective cover; 4. Sample to be tested. DETAILED DESCRIPTION

[0033] In order to make the technical problems solved by the utility model, the technical solutions adopted and the technical effects achieved clearer, the technical solutions of the embodiments of the utility model will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0034] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] Figure 1 The present invention is a withstand voltage test system, which is used to test the performance of the sample under high voltage, such as testing the insulation performance or action execution of the sample under high voltage. Figure 1 As shown, the withstand voltage test system includes a tester 1 , a protective cover 2 and an electrical circuit 3 .

[0036] Among them, the tester 1 can be an instrument for outputting high voltage used for testing, and the tester 1 can be an instrument of various models. The protective cover 2 can be a device for covering the sample to be tested 4 during testing. The electrical circuit 3 can be a circuit that electrically connects the tester 1 to the sample to be tested 4, and the electrical circuit 3 can include various switching devices and cables connecting the switching devices.

[0037] In this embodiment, the protective cover 2 may include a base 21, a position switch 23, and a cover body 22 covering the base 21, wherein the base 21 is used to support the sample to be tested 4, and the base 21 may be an insulating base, for example, the material may be bakelite, various plastics or insulating ceramics. When the sample to be tested 4 is placed on the base 21, the sample to be tested 4 can be electrically insulated from the test bench, thereby protecting the test bench. The cover body 22 can be a transparent electrically insulating cover body, for example, a cover body made of transparent plastic material. The cover body 22 can be square, round, etc. The cover body 22 can have a closed bottom and side walls extending from the bottom edge to the same side to form a cover body 22 with an opening. The cover body 22 can be opened toward the base 21 and covered on the base 21 to cover the sample 4 to be tested placed on the base 21. The position switch 23 on the protective cover 2 can be a mechanical switch. The position switch 23 is electrically connected to the electrical circuit 3. The position switch 23 is closed when it is mechanically pressed and separated when it is not mechanically pressed, so that the electrical circuit 3 is turned on or off.

[0038] like Figure 1 As shown, the tester 1 is connected to the sample 4 to be tested through the electrical circuit 3, and the tester 1 can output a test voltage to the electrical circuit 3. The position switch 23 in the protective cover 2 is electrically connected to the electrical circuit 3. When the cover body 22 is covered on the base 21, the position switch 23 is triggered to close, so that the electrical circuit 3 is turned on, and the tester 1 outputs a test voltage to the sample 4 to be tested through the electrical circuit 3. When the cover body 22 is opened and not covered on the base 21, the position switch 23 is triggered to separate, so that the electrical circuit 3 is cut off and cannot be energized, and the tester 1 stops outputting the test voltage to the sample 4 to be tested.

[0039] On the one hand, during the test, the protective cover 2 can be used to cover the sample 4 to be tested, so that the sample 4 to be tested is in the space inside the protective cover 2, which can prevent the human body from touching the sample 4 to be tested during the test, and block the device from splashing when the high voltage breaks through the sample 4 to be tested. On the other hand, through the electrical circuit 3 and the position switch 23, the electrical circuit 3 can be turned on when the cover body 22 is covered on the base 21, and the electrical circuit 3 can be turned off when the cover body 22 is not covered on the base 21, thereby preventing the tester 1 from outputting high voltage to the sample 4 to be tested when the sample 4 to be tested is not covered by the cover body 22, thereby improving the safety performance during the withstand voltage test through the double protection of physical devices and electrical circuits.

[0040] like Figure 2-Figure 4 As shown, in one embodiment, the electrical circuit 3 includes a power source ( Figure 2 The tester 1 is connected to the sample 4 to be tested via the normally open contact 311, and the power supply (AC220V) is connected to the coil M1 via the position switch (231, 232).

[0041] like Figure 2 As shown, in one embodiment, the position switch 23 may include a first position switch 231 and a second position switch 232, the first position switch 231 and the second position switch 232 are arranged at intervals on the base 21 or the cover 22, and the power supply is connected to the coil M1 through the first position switch 231 and the second position switch 232 in sequence. Figure 2 In the example, the first position switch 231 and the second position switch 232 are arranged on the cover body 22 at intervals. The first position switch 231 and the second position switch 232 are arranged on the side wall of the cover body 22 at intervals, and when the cover body 22 is covered on the base 21, the base 21 presses the first position switch 231 and the second position switch 232, so that the first position switch 231 and the second position switch 232 are closed. For example, when the cover body 22 and the base 21 are flippably connected, the first position switch 231 and the second position switch 232 are arranged on the side wall of the cover body 22 away from the flip axis to trigger the first position switch 231 and the second position switch 232 to close when the cover body 22 is completely covered on the base 21. In addition, two position switches are set to trigger the electrical circuit 3 to be turned on when all side walls of the cover body 22 abut against the base 21.

[0042] Of course, the position switch 23 may also be disposed on the base 21 , and when the cover 22 is covered on the base 21 , the side wall of the cover 22 presses the position switch 23 .

[0043] like Figure 3 and Figure 4 As shown, when the cover body 22 is covered on the base 21, the first position switch 231 and the second position switch 232 are closed, and the power supply AC220V outputs current to the coil M1 of the contactor 31. The coil M1 is energized to drive the normally open contact 311 of the contactor 31 to close, so that the electrical circuit 3 is turned on, and the tester 1 outputs a high voltage to the sample to be tested 4 through the line HV and the line RETURN. When the cover body 22 is not covered on the base 21, the first position switch 231 and the second position switch 232 are separated, the power supply AC220V stops outputting current to the coil M1 of the contactor 31, the coil M1 loses power, and the normally open contact 311 of the contactor 31 is separated, so that the electrical circuit 3 is cut off, and the tester 1 cannot output a high voltage to the sample to be tested 4 through the line HV and the line RETURN.

[0044] like Figure 4As shown, in another embodiment, the tester 1 also includes an enable command circuit 11. When the enable command circuit 11 is turned on, the tester 1 stops outputting the test voltage. When the enable command circuit 11 is turned off, the tester 1 outputs the test voltage. The contactor 31 also includes a normally closed contact 312. The normally closed contact 312 is arranged in the enable command circuit 11. Exemplarily, the enable command circuit 11 is composed of a short circuit between the terminal STOP and the terminal COM on the tester 1. The normally closed contact 312 is connected in series in the enable command circuit 11. When the cover body 22 is covered on the base 21, the coil M1 of the contactor 31 is energized. When the normally closed contact 312 is driven, the coil M1 of the contactor 31 is energized. When the open contact 311 is closed, the normally closed contact 312 is driven to separate at the same time, so that the enable command circuit 11 is cut off, and the tester 1 outputs the test voltage. When the cover 22 is not covered on the base 21, the coil M1 of the contactor 31 loses power. When the normally open contact 311 is driven to separate, the normally closed contact 312 is driven to close at the same time, the enable command circuit 11 is turned on, and the tester 1 stops outputting the test voltage. Therefore, the tester 1 is electrically controlled to output and stop outputting the test voltage to the sample 4 to be tested from the normally open contact of the contactor and the enable command circuit, thereby playing a dual protection role and improving the safety performance of the withstand voltage test.

[0045] In one embodiment, Figure 5 As shown, the contactor 31 is arranged outside the protective cover 2, and the contactor 31 is covered with a protective cover 313, which can also be an electrical insulation protective cover to prevent human body from touching the contactor and causing electric shock accidents.

[0046] In another embodiment, the cover 22 and the base 21 are connected in a flippable manner. Figure 6 As shown, the cover body 22 and the base 21 can be reversibly connected by at least one hinge 24. Of course, the cover body 22 and the base 21 can also be reversibly connected by a hole and a rotating shaft, or by a hinge structure. The reversible connection can conveniently and quickly open or cover the cover body 22 during the test.

[0047] like Figure 7 As shown, in one embodiment, the protective cover 2 also includes a support rod 25, one end of the support rod 25 is movably connected to the cover body 22, and the other end of the support rod 25 is movably connected to the base 21. The support rod 25 can be a pneumatic rod, a hydraulic rod or other support rod with damping, so that when the cover body 22 is opened, the cover body 22 can be supported by the support rod 25 to avoid the accident of the cover body 22 accidentally covering the base 21 after opening and outputting high voltage.

[0048] In addition, a handle 26 may be provided on the cover body 22 , and the cover body 22 may be conveniently opened or closed by the handle 26 .

[0049] In addition, it should be understood that although this specification is described according to implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the purpose of clarifying the device. Those skilled in the art should take the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0050] The technical principle of the present invention is described above in combination with specific embodiments. These descriptions are only for explaining the principle of the present invention and cannot be interpreted as limiting the protection scope of the present invention in any way. Based on the explanations here, technicians in this field can think of other specific implementation methods of the present invention without creative work, and these methods will fall within the protection scope of the present invention.

Claims

1. A withstand voltage test system, characterized in that: Includes tester, protective cover and electrical wiring; The tester is connected to the sample to be tested via the electrical circuit, and is used to output a test voltage to the electrical circuit; A protective cover, the protective cover comprising a base, a position switch and a cover body covered on the base, the base is used to carry the sample to be tested, and the position switch is electrically connected to the electrical circuit; When the cover is placed on the base, the position switch is triggered to close, the electrical circuit is turned on, and the tester outputs a test voltage to the sample to be tested; When the cover is not covered on the base, the position switch is triggered to separate, the electrical circuit is cut off, and the tester stops outputting the test voltage to the sample to be tested.

2. The withstand voltage test system according to claim 1, characterized in that: The electrical circuit includes a power supply and a contactor, the contactor includes a normally open contact and a coil, the tester is connected to the sample to be tested via the normally open contact, and the power supply is connected to the coil via the position switch.

3. The withstand voltage test system according to claim 2, characterized in that: The contactor is arranged outside the protective cover, and the contactor cover is provided with a protective cover.

4. The withstand voltage test system according to claim 2, characterized in that: The tester further comprises an enable command circuit, when the enable command circuit is turned on, the tester stops outputting the test voltage, and when the enable command circuit is turned off, the tester outputs the test voltage; The contactor further comprises a normally closed contact, and the normally closed contact is arranged in the enabling command circuit; When the cover body is covered on the base, the normally closed contact is triggered to separate and the enabling command circuit is cut off; when the cover body is not covered on the base, the normally closed contact is triggered to close and the enabling command circuit is turned on.

5. The withstand voltage test system according to any one of claims 1 to 4, characterized in that: The base is an electrically insulating base, and the cover is a transparent electrically insulating cover.

6. The withstand voltage test system according to any one of claims 1 to 4, characterized in that: The cover body is connected to the base in a flippable manner.

7. The withstand voltage test system according to claim 6, characterized in that: The protective cover also includes a support rod, one end of which is movably connected to the cover body, and the other end of which is movably connected to the base.

8. The withstand voltage test system according to any one of claims 1 to 4, characterized in that: The position switch is arranged on the side wall of the cover body, and when the cover body is covered on the base, the base presses the position switch.

9. The withstand voltage test system according to any one of claims 1 to 4, characterized in that: The position switch is arranged on the base, and when the cover is covered on the base, the side wall of the cover presses the position switch.

10. The withstand voltage test system according to any one of claims 2 to 4, characterized in that: The position switch comprises a first position switch and a second position switch, wherein the first position switch and the second position switch are arranged at intervals on the base or the cover, and the power supply is connected to the coil via the first position switch and the second position switch in sequence.

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