CN212301663U - High-precision magnitude high-voltage division circuit - Google Patents
High-precision magnitude high-voltage division circuit Download PDFInfo
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- CN212301663U CN212301663U CN202020889177.2U CN202020889177U CN212301663U CN 212301663 U CN212301663 U CN 212301663U CN 202020889177 U CN202020889177 U CN 202020889177U CN 212301663 U CN212301663 U CN 212301663U
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Abstract
The utility model discloses a high accuracy meter level high pressure bleeder circuit, including measuring circuit board, measuring circuit board's input is connected with the high-voltage circuit output of measurand, and measuring circuit board's output passes through the earthing terminal and is connected with the earth, is provided with a resistance on the measuring circuit board, and two resistance are parallelly connected to be a set of. Adopt resistance bleeder circuit principle, it is little to be directed against voltmeter and universal meter measuring range, and kilovolt table precision is low, problem with high costs, make a high accuracy high pressure bleeder test circuit, set up a plurality of check points through resistance bleeder circuit, divide into half, fifth, ten one tenth with the direct current high pressure of surveying, just so can test higher voltage range with single voltmeter or universal meter, thereby reach the multi-purpose function of a table, need not to use bulky, the precision is low, the kilovolt table that the price is also more expensive is measured, make high voltage system's detection more convenient.
Description
Technical Field
The utility model relates to a high-voltage system voltage detection technical field specifically is a high accuracy measurement level high-voltage bleeder circuit.
Background
The existing voltage measuring instrument comprises a voltmeter and a multimeter, and the basic principle of measuring the voltage is that two ends of the voltmeter or the multimeter are connected in parallel with two ends of the measured voltage, so that the numerical value of the measured voltage can be read from a dial plate. The advantage is that the test is convenient, and the shortcoming is also more obvious, and most voltmeter and universal meter's test range scope is little, and direct current voltage surpasss more than 1KV, needs the kilovolt meter to measure, and the kilovolt meter is bulky, and the precision is low, and the price is also more expensive, in order to guarantee to measure full range voltage, leads to the instrument increase of measurement voltage, and occupation space is big, the wasting of resources.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a high accuracy measurement level high pressure bleeder circuit aims at improving the high-pressure system voltage detection difficulty and uses and carry inconvenient problem.
The utility model discloses a realize like this:
a high-precision metering-level high-voltage bleeder circuit comprises a measuring circuit board, wherein the input end of the measuring circuit board is connected with the output end of a measured high-voltage circuit, the output end of the measuring circuit board is connected with the ground through a grounding end, two resistors are arranged on the measuring circuit board in parallel to form a group, each group is connected in series, a plurality of uniformly equally-divided detection points are arranged on the measuring circuit board, a cover plate is covered at the upper end of the measuring circuit board, one end of the cover plate is rotatably connected with the measuring circuit board through a hinge, handles are fixedly arranged at the other end of the cover plate and the end part of the measuring circuit board, a pad foot is arranged at the lower end of the measuring circuit board, the measuring circuit board is conveniently protected when the measuring circuit board is opened or not used through the rotary connection of the arranged cover plate and the measuring circuit board, and the handles arranged, the measuring circuit formed by 200 resistors is arranged to divide the voltage of the high-voltage circuit, and the voltage of the high-voltage circuit is detected by detecting the voltage dividing circuit.
Furthermore, the surface of the cover plate is provided with an observation port, the observation port is provided with a transparent acrylic plate, and the observation of internal electrical elements is facilitated through the arranged observation port.
Furthermore, the other end of the cover plate is fixedly provided with a rotatable lock plate, a lock hole is formed in the lock plate, a lock column matched with the lock plate is arranged on the measuring circuit board, and the lock column penetrates through the lock hole and rotates to lock the lock plate.
Furthermore, the resistor is a high-precision low-temperature-drift resistor with a resistor grade of 200K.
Furthermore, the detection point is connected with the red meter pen access end of the voltmeter, and the black meter pen of the voltmeter is connected with the grounding end.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses in through the apron that sets up with the rotation of measuring circuit board be connected the protection to measuring circuit board when opening when convenient to use and not using, and the handle that apron and measuring circuit board set up is convenient to carry when using measuring circuit board, through adopting resistance partial pressure principle, it is little to aim at voltmeter and universal meter measuring range, and the low precision of kilovolt meter, with high costs problem, make a high accuracy high pressure partial pressure test circuit, set up a plurality of check points through resistance partial pressure circuit, divide into half, fifth, ten one tenth etc. with the direct current high pressure that surveys, just so can measure higher voltage range with single voltmeter or universal meter, thereby realize the multi-purpose function of a table, need not to use the table volume big, the precision is low, the expensive kilovolt meter is measured also, make the detection of high voltage system more convenient, can measure the voltage of high voltage system with high accuracy, the direct-current voltage of 1KV and above can be detected by the voltmeter and the universal meter within the inherent measuring range, the purpose of one meter for multiple purposes is achieved, the cost is saved, the reliability is good, the testing precision is improved, and great convenience is brought to engineers.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic view of a protection structure of a measurement circuit board of a high-precision magnitude high-voltage divider circuit according to the present invention;
fig. 2 is a schematic diagram of a measurement circuit board of a high-precision magnitude high-voltage divider circuit according to the present invention;
fig. 3 is a schematic diagram of a measurement circuit of a high-precision magnitude high-voltage divider circuit according to the present invention;
fig. 4 is a schematic view of a measurement cover plate of a high-precision magnitude high-voltage divider circuit according to the present invention;
fig. 5 is a schematic diagram of a locking plate of a high-precision magnitude high-voltage divider circuit according to the present invention.
In the figure: 1. a cover plate; 11. a viewing port; 2. a handle; 3. a locking plate; 31. a lock hole; 4. measuring the circuit board; 5. detecting points; 6. a lock cylinder; 7. a resistance; 8. a foot pad;
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention.
R-single resistance value
RGeneral assembly-total resistance value
IGeneral assembly-total current value
ISheetIndividual resistance current values
VGeneral assembly＝N×VS
N-multiple of test point.
The total resistance value of the measuring circuit is 10 MOmega, the high resistance effectively controls the internal current I to be very small, the power of a single resistor is completely smaller than 1/4 of the self bearing power, the total power can not exceed 10W to the maximum, the working stability is good, the reliability is high, the measuring circuit board 4 is provided with the plurality of detection points 5, when the universal meter and the voltmeter are used for detection, a proper gear test can be selected according to the measurement range in the meter, the voltage of a high-voltage system can be measured with high precision, the voltmeter and the universal meter can detect direct-current voltage of 1KV and above in the inherent range, the purpose of one meter with multiple purposes is achieved, the cost is saved, the measuring circuit has good reliability, the testing precision is improved, and great convenience is brought to engineers.
Specifically, referring to fig. 1 and 2, the upper end of the measuring circuit board 4 is covered with a cover plate 1, one end of the cover plate 1 is rotatably connected with the measuring circuit board 4 through a hinge, the other end of the cover plate 1 and the end of the measuring circuit board 4 are both fixedly provided with handles 2, the lower end of the measuring circuit board 4 is provided with pad feet 8, the cover plate 1 and the measuring circuit board 4 are rotatably connected through the arrangement to facilitate opening and protecting the measuring circuit board 4 when the measuring circuit board is not used, and the cover plate 1 and the handle 2 arranged on the measuring circuit board 4 facilitate carrying of the measuring circuit board 4 when the measuring circuit board is used.
Specifically, referring to fig. 4, a viewing port 11 is disposed on a surface of the cover plate 1, and a transparent acrylic plate is disposed at the viewing port 11, so that the viewing of internal electrical components is facilitated through the viewing port 11.
Specifically, referring to fig. 5, a rotatable locking plate 3 is fixedly disposed at the other end of the cover plate 1, a locking hole 31 is disposed on the locking plate 3, a locking post 6 matched with the locking plate 3 is disposed on the measurement circuit board 4, and the locking plate 3 is locked by the locking post 6 passing through the locking hole 31 and rotating.
The working principle is that when the voltage of the high-voltage circuit is measured, one end of the measuring circuit board 4 is connected with the high-voltage circuit, the other end of the measuring circuit board is connected with the grounding terminal, a red meter pen of the voltmeter is connected to the detection point 5 during measurement, then a black meter pen of the voltmeter is connected with the grounding terminal, and the actual value of the output voltage is obtained by multiplying the detected voltage value by the multiple of the detection point 5 during detection, so that the voltage of the high-voltage circuit is detected.
The device obtained by the design can basically meet the requirement of convenient use of voltage detection and detection of a high-voltage system, but the designer further improves the device with the aim of further improving the function of the device.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. The utility model provides a high accuracy measurement level high pressure bleeder circuit, includes measurement circuit board (4), its characterized in that: the input of measuring circuit board (4) is connected with the high-voltage circuit output that is surveyed, and the output of measuring circuit board (4) passes through the earthing terminal and is connected with the earth, measuring circuit board (4) on be provided with 200 resistance (7), two resistance (7) parallelly connected be a set of, and every group looks series connection is in the same place, measuring circuit board is last to be provided with check point (5) of the even partition of a plurality of, the upper end cover of measuring circuit board (4) is equipped with apron (1), and the one end of apron (1) is passed through the hinge rotation with measuring circuit board (4) and is connected, the other end of apron (1) and the tip of measuring circuit board (4) are all fixed and are provided with handle (2), and the lower extreme of measuring circuit board (4) is provided with and fills up foot.
2. A high accuracy magnitude high voltage divider circuit according to claim 1, wherein the surface of said cover plate (1) is provided with a viewing port (11), and a transparent acrylic plate is provided at the viewing port (11).
3. A high accuracy metering level high voltage divider circuit according to claim 2, characterized in that the other end of the cover plate (1) is fixedly provided with a rotatable lock plate (3), the lock plate (3) is provided with a lock hole (31), and the measuring circuit board (4) is provided with a lock column (6) matched with the lock plate (3).
4. A high accuracy magnitude high voltage divider circuit according to claim 3, wherein said resistor (7) is 200K high accuracy, low temperature drift resistor.
5. The high-precision magnitude high-voltage division circuit according to claim 4, wherein the detection point (5) is connected with a red meter pen access terminal of the voltmeter, and a black meter pen of the voltmeter is connected with a ground terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020889177.2U CN212301663U (en) | 2020-05-25 | 2020-05-25 | High-precision magnitude high-voltage division circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020889177.2U CN212301663U (en) | 2020-05-25 | 2020-05-25 | High-precision magnitude high-voltage division circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212301663U true CN212301663U (en) | 2021-01-05 |
Family
ID=73969679
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020889177.2U Active CN212301663U (en) | 2020-05-25 | 2020-05-25 | High-precision magnitude high-voltage division circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212301663U (en) |
-
2020
- 2020-05-25 CN CN202020889177.2U patent/CN212301663U/en active Active
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