CN218350420U - Withstand voltage point inspection tester - Google Patents
Withstand voltage point inspection tester Download PDFInfo
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- CN218350420U CN218350420U CN202222190587.XU CN202222190587U CN218350420U CN 218350420 U CN218350420 U CN 218350420U CN 202222190587 U CN202222190587 U CN 202222190587U CN 218350420 U CN218350420 U CN 218350420U
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Abstract
The utility model relates to a transformer manufacturing technical field especially relates to a tester is examined to withstand voltage point. A withstand voltage point detection tester comprises a point detection box body, a current display device, a leakage current wiring terminal, a point detection wiring terminal and a withstand voltage test wire; the current display device is arranged on the point inspection box body; the leakage current wiring terminal and the point inspection wiring terminal are fixedly arranged on the upper surface of the point inspection box body and are sequentially arranged from left to right, the leakage current wiring terminal and the point inspection wiring terminal are respectively connected with the current display device, the wiring terminal of the leakage current wiring terminal is connected with a voltage withstanding instrument, the current display device comprises a milliammeter, and the milliammeter is used for detecting the current value of a circuit of the current display device so as to obtain the voltage value of the voltage withstanding instrument; the withstand voltage point detection tester can find abnormality of the withstand voltage point in time, and solves the problem of hidden danger of withstand voltage failure test of a transformer.
Description
Technical Field
The utility model relates to a transformer manufacturing technical field especially relates to a tester is examined to withstand voltage point.
Background
The working principle of the withstand voltage tester is that a voltage higher than the normal working voltage is applied to an insulator of the tested device for a specified time, and only a small leakage current is generated by the voltage applied to the insulator, so that the insulation property is good. 2 indexes of the pressure resistance instrument are selected: the maximum output voltage value and the maximum alarm current value. In the process of using the voltage-withstanding tester, the voltage-withstanding test is required to be checked every day to prevent the voltage-withstanding tester from being abnormal or damaged, so that the voltage-withstanding point-checking tester for the voltage-withstanding tester is urgently needed to test whether the maximum output voltage value and the maximum alarm current value of the voltage-withstanding tester meet the expectation or not, thereby ensuring the accuracy of the test and reducing the occurrence of safety accidents.
SUMMERY OF THE UTILITY MODEL
Problem to the background art provides, the utility model aims to provide a tester is examined to withstand voltage point can in time discover the abnormality that withstand voltage appearance appears, has solved the hidden danger problem to the withstand voltage failure test of transformer.
To achieve the purpose, the utility model adopts the following technical proposal:
a withstand voltage point detection tester comprises a point detection box body, a current display device, a leakage current wiring terminal, a point detection wiring terminal and a withstand voltage test wire;
the current display device is arranged on the point inspection box body;
the leakage current wiring terminal and the point detection wiring terminal are fixedly arranged on the upper surface of the point detection box body and are sequentially arranged from left to right, the leakage current wiring terminal and the point detection wiring terminal are respectively connected with the current display device, a wiring terminal of the leakage current wiring terminal is connected with a withstand voltage instrument, the current display device comprises a milliammeter, and the milliammeter is used for detecting a current value of a circuit of the current display device so as to obtain a voltage value of the withstand voltage instrument;
the point inspection binding post comprises a first point inspection binding post and a second point inspection binding post, one end of a voltage-withstanding test line is connected with the wiring end of the first point inspection binding post, and the other end of the voltage-withstanding test line is detachably connected with the second point inspection binding post to short-circuit partial circuits in the current display device.
The leakage current binding post comprises a leakage current high-voltage binding post and a leakage current low-voltage binding post, a wiring terminal of the leakage current high-voltage binding post is connected with a high-voltage end of a withstand voltage instrument, and a wiring terminal of the leakage current low-voltage binding post is connected with a low-voltage end of the withstand voltage instrument;
the current display device comprises a plurality of resistors, and the leakage current high-voltage wiring terminal, the milliammeter, the resistors and the leakage current low-voltage wiring terminal are sequentially connected in series.
Further, five resistors are provided, which are respectively a first resistor, a second resistor, a third resistor, a fourth resistor and a fifth resistor, and the milliammeter, the first resistor, the second resistor, the third resistor, the fourth resistor and the fifth resistor are sequentially connected in series inside the spot inspection box body.
In a further specific embodiment, the first point-detection terminal is connected in parallel between the milliammeter and the first resistor, and the second point-detection terminal is connected in parallel between the third resistor and the fourth resistor.
Furthermore, an electric wire clamp is arranged at one end, away from the first point inspection binding post, of the voltage-withstanding test wire, and the electric wire clamp is detachably clamped on the binding post of the second point inspection binding post.
It is further described that the leakage current high-voltage wiring terminal, the leakage current low-voltage wiring terminal, the first point inspection wiring terminal and the second point inspection wiring terminal are sequentially arranged on the upper surface of the point inspection box body from left to right, and the leakage current high-voltage wiring terminal, the leakage current low-voltage wiring terminal, the first point inspection wiring terminal and the second point inspection wiring terminal are distributed on the same straight line.
More specifically, the milliammeter is arranged on the upper surface of the point inspection box, and the horizontal plane of the top surface of the milliammeter is higher than the horizontal plane of the upper surface of the point inspection box.
Compared with the prior art, the embodiment of the utility model has following beneficial effect:
when the voltage withstanding point detection tester performs point detection on the voltage withstanding instrument, five resistors of 200k omega are connected in series in an internal circuit of the voltage withstanding instrument, the ratio of the voltage withstanding instrument to the current of a point detection box is 1 under the condition that the total resistance is 1000k omega, and the setting enables a user to directly observe whether a milliammeter shows the same value or not after setting the value of the voltage withstanding instrument, so that the operation is more visual, the use efficiency is improved, when the maximum alarm current value of the voltage withstanding instrument is tested, the first resistor, the second resistor and the third resistor are in short circuit by connecting the first point detection terminal and the second point detection terminal, only the voltage and the leakage current range of the voltage withstanding instrument need to be set at the moment, when the ratio of the voltage withstanding instrument to the fourth resistor and the fifth resistor exceeds the leakage current range of the voltage withstanding instrument, the ultra-leakage alarm of the voltage withstanding instrument is qualified, the potential hazard of the voltage withstanding failure test of a transformer can be avoided, and the use is very convenient.
Drawings
Fig. 1 is a schematic structural diagram of a pressure resistance spot inspection tester according to an embodiment of the present invention;
fig. 2 is a top view of a pressure point inspection tester according to an embodiment of the present invention;
fig. 3 is an internal circuit diagram of a pressure resistance spot inspection tester according to an embodiment of the present invention;
in the drawings: the current detection device comprises a 1-point detection box body, a 2-current display device, a 21-milliammeter, a 22-first resistor, a 23-second resistor, a 24-third resistor, a 25-fourth resistor, a 26-fifth resistor, a 3-leakage current binding post, a 31-leakage current high-voltage binding post, a 32-leakage current low-voltage binding post, a 4-point detection binding post, a 41-first point detection binding post, a 42-second point detection binding post, a 5-withstand voltage test line and a 51-wire clamp.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are exemplary only for explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, are not to be construed as limiting the invention. Furthermore, features defined as "first" and "second" may explicitly or implicitly include one or more of the features for distinguishing between descriptive features, non-sequential, non-trivial and non-trivial.
In the description of the present invention, "a plurality" means two or more unless otherwise specified.
As shown in fig. 1 to 2, a voltage-withstanding point inspection tester comprises a point inspection box body 1, a current display device 2, a leakage current wiring terminal 3, a point inspection wiring terminal 4 and a voltage-withstanding test wire 5;
the current display device 2 is arranged on the point inspection box body 1;
the leakage current wiring terminal 3 and the point inspection wiring terminal 4 are fixedly mounted on the upper surface of the point inspection box body 1, the leakage current wiring terminal 3 and the point inspection wiring terminal 4 are sequentially arranged from left to right, the leakage current wiring terminal 3 and the point inspection wiring terminal 4 are respectively connected with the current display device 2, a wiring terminal of the leakage current wiring terminal 3 is connected with a voltage withstanding instrument, the current display device 2 comprises a milliammeter 21, and the milliammeter 21 is used for detecting a current value of a circuit of the current display device 2 so as to obtain a voltage value of the voltage withstanding instrument;
the point inspection binding post 4 comprises a first point inspection binding post 41 and a second point inspection binding post 42, one end of a voltage-resistant test line 5 is connected with the wiring end of the first point inspection binding post 41, and the other end of the voltage-resistant test line 5 is detachably connected with the second point inspection binding post 42 to short-circuit part of circuits in the current display device 2.
Through setting up leakage current terminal 3, because the terminal of leakage current terminal 3 links to each other with withstand voltage appearance, the electric leakage current that its produced can pass through leakage current terminal 3 enters into in current display device 2, by milliammeter 21 demonstrates corresponding numerical value again, through comparing milliammeter 21's numerical value and the voltage value that withstand voltage appearance set up, can confirm whether correct the internal circuit of withstand voltage appearance.
Specifically, one end of the voltage-withstanding detection line 5 is connected with the wiring end of the first point detection wiring terminal 41, the other end of the voltage-withstanding detection line 5 is detachably connected with the second point detection wiring terminal 42, when the voltage-withstanding detection line is connected with the first point detection wiring terminal 41 and the second point detection wiring terminal 42, a short circuit is formed, the resistance value of the current display device 2 can be changed, the maximum alarm current value is obtained by setting the voltage value and the leakage current range of the voltage-withstanding instrument, the voltage-withstanding instrument is started, the voltage-withstanding instrument is qualified when the voltage-withstanding instrument is in an over-leakage alarm state, otherwise, the voltage-withstanding instrument is unqualified, and whether the leakage current of the voltage-withstanding instrument is normal can be detected.
More specifically, the leakage current terminal 3 comprises a leakage current high-voltage terminal 31 and a leakage current low-voltage terminal 32, the terminal of the leakage current high-voltage terminal 31 is connected with the high-voltage end of the voltage-withstanding instrument, and the terminal of the leakage current low-voltage terminal 32 is connected with the low-voltage end of the voltage-withstanding instrument;
the current display device 2 comprises a plurality of resistors, and the leakage current high-voltage wiring terminal 31, the milliammeter 21, the resistors and the leakage current low-voltage wiring terminal 32 are sequentially connected in series.
Through with leak current high-voltage terminal 31's wiring end with leak current low pressure terminal 32's wiring end meets with the high-pressure side and the low pressure end of withstand voltage appearance respectively, just leak current high-voltage terminal 31 milliammeter 21 resistance with leak current low pressure terminal 32 series connection in proper order, promptly leak current terminal 3 after linking to each other with withstand voltage appearance leak current high-voltage terminal 31 with leak current between the low pressure terminal 32 current display device 2 can form the electric current, and this electric current can pass through milliammeter 21 with resistance forms a correct return circuit, ensures current display device 2 normal operating.
Furthermore, as shown in fig. 3, five resistors are provided, which are respectively a first resistor 22, a second resistor 23, a third resistor 24, a fourth resistor 25 and a fifth resistor 26, and the milliammeter 21, the first resistor 22, the second resistor 23, the third resistor 24, the fourth resistor 25 and the fifth resistor 26 are sequentially connected in series inside the spot inspection box 1.
By arranging the current display device 2, since the milliammeter 21 is connected in series with the first resistor 22, the second resistor 23, the third resistor 24, the fourth resistor 25 and the fifth resistor 26, current can pass through the milliammeter 21, the first resistor 22, the second resistor 23, the third resistor 24, the fourth resistor 25 and the fifth resistor 26, and a simple voltmeter capable of measuring voltage is formed. The milliammeter 21 is a 5mA meter, the resistances of the first resistor 22, the second resistor 23, the third resistor 24, the fourth resistor 25, and the fifth resistor 26 are all 200K Ω, that is, when the internal circuit of the current display device 2 is not short-circuited, the total resistance is 1000K Ω, it can be known according to ohm's law that the value displayed by the milliammeter 21 is the same as the voltage value of the withstand voltage instrument, that is, the ratio of the voltage value of the withstand voltage instrument to the current value of the point detection box is 1, and when the voltage value of the withstand voltage instrument is 1KV, the milliammeter 21 displays 1mA, and this setting enables a user to directly observe whether the milliammeter 21 displays the same value after setting the voltage value of the withstand voltage instrument, so that the operation is more intuitive, and the efficiency is effectively improved.
More specifically, the first point-detecting terminal 41 is connected in parallel between the milliammeter 21 and the first resistor 22, and the second point-detecting terminal 42 is connected in parallel between the third resistor 24 and the fourth resistor 25.
By connecting the withstand voltage test line 5 to the terminal of the second point inspection terminal 42, since the first point inspection terminal 41 and the second point inspection terminal 42 are connected in parallel to the first resistor 22, the second resistor 23 and the third resistor 24, the first resistor 22, the second resistor 23 and the third resistor 24 in the current display device 2 are short-circuited at this time, only the fourth resistor 25 and the fifth resistor 26 of the current display device 2 can operate at this time, and both the first point inspection terminal 41 and the second point inspection terminal 42 are "fail" point inspection terminals.
Furthermore, a wire clamp 51 is disposed at an end of the voltage withstanding test wire 5 away from the first point inspection terminal 41, and the wire clamp 51 is detachably clamped to the terminal of the second point inspection terminal 42.
The electric wire clamp 51 is arranged at one end, far away from the first point detection binding post 41, of the voltage-withstanding test wire 5, so that the other end of the voltage-withstanding test wire 5 is detachably connected with the second point detection binding post 42, the electric wire clamp 51 is clamped at a terminal of the second point detection binding post 42 to connect a parallel circuit, the first resistor 22, the second resistor 23 and the third resistor 24 can be in short circuit, at the moment, the milliammeter 21 is connected with the fourth resistor 25 and the fifth resistor 26 in series, through setting the voltage and the maximum alarm current value of the voltage-withstanding instrument, when the leakage current binding post 3 is connected with the voltage-withstanding instrument, the current in the current display device 2 can pass through the milliammeter 21, the omega fourth resistor 25 and the fifth resistor 26, according to ohm law, the current value can be obtained as the ratio of the voltage value of the voltage-withstanding instrument to the resistance values of the two resistors, if the voltage of the voltage-withstanding instrument is set to 3.5KV, the leakage current is set to be less than 5mA, at the current value is 3.5KV/400k, and as a result, the voltage-withstanding tester is started, and the leakage current is convenient for normal operation, otherwise, the leakage current is unqualified.
Further, the leakage current high-voltage binding post 31, the leakage current low-voltage binding post 32, the first point detection binding post 41 and the second point detection binding post 42 are sequentially arranged on the upper surface of the point detection box body 1 from left to right, and the leakage current high-voltage binding post 31, the leakage current low-voltage binding post 32, the first point detection binding post 41 and the second point detection binding post 42 are distributed on the same straight line.
Through with leak current high voltage terminal 31 leak current low pressure terminal 32 first point is examined terminal 41 and second point is examined terminal 42 and is arranged in proper order, is favorable to current display device 2's circuit is arranged, and enables it and is in the point has higher sight on the surface of examining box 1.
More specifically, the milliammeter 21 is disposed on the upper surface of the spot inspection box 1, and a horizontal plane of a top surface of the milliammeter 21 is higher than a horizontal plane of the upper surface of the spot inspection box 1.
Through inciting somebody to action milliammeter 21's display dial plate is arranged in the upper surface of point inspection box 1, milliammeter 21 is used for showing the numerical value of electric current in the current display device 2, because the horizontal plane at milliammeter 21's top surface place is a little higher than the horizontal plane at the upper surface place of point inspection box 1 is observed in the person of facilitating the use current numerical value that milliammeter 21 tested, also can avoid when using the instrument milliammeter 21 is collided with the damage, is favorable to protecting the safety of milliammeter 21 and instrument.
Further, the point inspection box 1 is made of an insulating material, the current display device 2 is installed inside the point inspection box 1 except for the milliammeter 21, and only the milliammeter 21, the leakage current terminal 3 and the point inspection terminal 4 are arranged on the upper surface of the point inspection box 1.
Through inciting somebody to action current display device 2 set up in the point is examined inside box 1, because the point is examined box 1 and is made for insulating material, here can be wood, just the point is examined 1 upper surface of box only milliammeter 21 the leakage current terminal 3 with the terminal 4 is examined to the point, when guaranteeing that this instrument is convenient for watch and operate, also can protect user's safety, prevents the electric leakage and electrocutes.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (7)
1. A withstand voltage point detection tester is characterized by comprising a point detection box body, a current display device, a leakage current wiring terminal, a point detection wiring terminal and a withstand voltage test line;
the current display device is arranged on the point inspection box body;
the leakage current wiring terminal and the point detection wiring terminal are fixedly arranged on the upper surface of the point detection box body and are sequentially arranged from left to right, the leakage current wiring terminal and the point detection wiring terminal are respectively connected with the current display device, a wiring terminal of the leakage current wiring terminal is connected with a withstand voltage instrument, the current display device comprises a milliammeter, and the milliammeter is used for detecting a current value of a circuit of the current display device so as to obtain a voltage value of the withstand voltage instrument;
the point inspection binding post comprises a first point inspection binding post and a second point inspection binding post, one end of a voltage-withstanding test line is connected with the wiring end of the first point inspection binding post, and the other end of the voltage-withstanding test line is detachably connected with the second point inspection binding post to short-circuit partial circuits in the current display device.
2. The voltage withstanding point detection tester of claim 1, wherein the leakage current wiring terminal comprises a leakage current high voltage wiring terminal and a leakage current low voltage wiring terminal, a wiring terminal of the leakage current high voltage wiring terminal is connected with a high voltage end of the voltage withstanding instrument, and a wiring terminal of the leakage current low voltage wiring terminal is connected with a low voltage end of the voltage withstanding instrument;
the current display device comprises a plurality of resistors, and the leakage current high-voltage wiring terminal, the milliammeter, the resistors and the leakage current low-voltage wiring terminal are sequentially connected in series.
3. The pressure-resistant point inspection tester according to claim 2, wherein five resistors are provided, and are respectively a first resistor, a second resistor, a third resistor, a fourth resistor and a fifth resistor, and the milliammeter, the first resistor, the second resistor, the third resistor, the fourth resistor and the fifth resistor are sequentially connected in series inside the point inspection box body.
4. The voltage withstanding point inspection tester of claim 3, wherein the first point inspection terminal is connected in parallel between the milliammeter and the first resistor, and the second point inspection terminal is connected in parallel between the third resistor and the fourth resistor.
5. The voltage-withstanding point inspection tester according to claim 4, wherein a wire clamp is arranged at one end of the voltage-withstanding test wire far away from the first point inspection terminal, and the wire clamp is detachably clamped on a wiring terminal of the second point inspection terminal.
6. A voltage withstanding point inspection tester according to claim 2, wherein the leakage current high voltage wiring terminal, the leakage current low voltage wiring terminal, the first point inspection wiring terminal and the second point inspection wiring terminal are sequentially arranged on the upper surface of the point inspection box body from left to right, and the leakage current high voltage wiring terminal, the leakage current low voltage wiring terminal, the first point inspection wiring terminal and the second point inspection wiring terminal are distributed on the same straight line.
7. The pressure-resistant spot inspection tester according to claim 1, wherein the milliammeter is disposed on an upper surface of the spot inspection box, and a top surface of the milliammeter is located at a level higher than a level of the upper surface of the spot inspection box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222190587.XU CN218350420U (en) | 2022-08-19 | 2022-08-19 | Withstand voltage point inspection tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222190587.XU CN218350420U (en) | 2022-08-19 | 2022-08-19 | Withstand voltage point inspection tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218350420U true CN218350420U (en) | 2023-01-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222190587.XU Active CN218350420U (en) | 2022-08-19 | 2022-08-19 | Withstand voltage point inspection tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218350420U (en) |
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2022
- 2022-08-19 CN CN202222190587.XU patent/CN218350420U/en active Active
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