CN204269730U - A kind of Insulation Resistance Tester - Google Patents
A kind of Insulation Resistance Tester Download PDFInfo
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- CN204269730U CN204269730U CN201420719778.3U CN201420719778U CN204269730U CN 204269730 U CN204269730 U CN 204269730U CN 201420719778 U CN201420719778 U CN 201420719778U CN 204269730 U CN204269730 U CN 204269730U
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- resistance
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Abstract
The utility model relates to a kind of tester, belongs to electrical equipment fields of measurement, is specifically related to a kind of Insulation Resistance Tester.Comprise: numerical controlled voltage module, direct current output module, bleeder circuit module, metering circuit module, controller, wherein: described controller is connected with numerical controlled voltage module, metering circuit; The input end of described direct current output module is connected with numerical controlled voltage module, output terminal is connected with the input end of metering circuit by a bleeder circuit, and connects insulation resistance to be tested between the output terminal of described direct current output module and the input end of metering circuit.This tester compact, lightweight, measurement range is wide, and measuring accuracy is high, stable performance, easy to use.
Description
Technical field
The utility model relates to a kind of tester, belongs to electrical equipment fields of measurement, is specifically related to a kind of Insulation Resistance Tester.
Background technology
Insulation resistance test is the test to transformer major insulation performance, Main Diagnosis transformer is due to influence degrees such as effect and moist filth such as machinery, electric field, temperature, chemistry, can sensitive reflection transformer insulated entirety make moist, overall deterioration and insulation penetrability defect, be one of transformer Primary Reference criterion that can put into operation.Insulation Resistance Tester complex structure in currently available technology, measurement range is limited, and measuring accuracy is low, and is not easy to operation.
Utility model content
The utility model mainly solves complex structure existing in prior art, and measurement range is limited, and measuring accuracy is low, and is not easy to the technical matterss such as operation, provides a kind of Insulation Resistance Tester.This tester compact, lightweight, measurement range is wide, and measuring accuracy is high, stable performance, easy to use.
Above-mentioned technical matters of the present utility model is mainly solved by following technical proposals:
A kind of Insulation Resistance Tester, comprising: numerical controlled voltage module, direct current output module, bleeder circuit module, metering circuit module, controller, wherein: described controller is connected with numerical controlled voltage module, metering circuit; The input end of described direct current output module is connected with numerical controlled voltage module, output terminal is connected with the input end of metering circuit by a bleeder circuit, and connects insulation resistance to be tested between the output terminal of described direct current output module and the input end of metering circuit.
Optimize, above-mentioned a kind of Insulation Resistance Tester, also comprises the human-computer interaction module be connected with controller, and described human-computer interaction module comprises: keyboard, liquid crystal display, communication interface.
Optimize, above-mentioned a kind of Insulation Resistance Tester, described controller model is the ARM microcontroller of STM32F103.
Optimize, above-mentioned a kind of Insulation Resistance Tester, described metering circuit comprises the identical measuring unit at least six tunnels, each road measuring unit includes: the first amplifier, second amplifier, the 3rd amplifier, the reverse input end of described first amplifier is connected with test circuit input end BNC6 by resistance R63, and input end is by resistance R69 ground connection in the same way for it, and its output terminal is connected with the input end in the same way of the second amplifier by resistance R67; The reverse input end of described second amplifier is connected with its output terminal, its output terminal is connected with the input end in the same way of the 3rd amplifier by resistance R65, R66, be connected with metering circuit output terminal by resistance R68 after the reverse input end of described 3rd amplifier is connected with its output terminal, described circuit between resistance R65, R66 is connected with the output terminal of the 3rd amplifier by resistance C54 again.
Optimize, above-mentioned a kind of Insulation Resistance Tester, test circuit input end pin BNC6 is also by Transient Suppression Diode ground connection, and described resistance R67 is by electric capacity C56 ground connection.
Optimize, above-mentioned a kind of Insulation Resistance Tester, the differential amplifier of described first amplifier to be model be INA128, its 4 pin is by electric capacity C58 ground connection, and 7 pin pass through electric capacity C52 ground connection, 5 pin ground connection, and described 7 pins are also connected to a malleation, described 4 pins are also connected to a negative pressure.
Optimize, above-mentioned a kind of Insulation Resistance Tester, the positive pole pin of described second amplifier is connected with a malleation by resistance R64, and its negative pole pin is connected with a negative pressure by resistance R70, and described resistance R70 and resistance R64 is also respectively by electric capacity C57 and electric capacity C53 ground connection.
Optimize, above-mentioned a kind of Insulation Resistance Tester, each measuring unit described also comprises a terminal block P, and described resistance R68 is connected with controller by terminal block P.
Therefore, the utility model tool has the following advantages:
(2) measurement effect is good: measuring speed is fast, and stable performance, measuring accuracy is high, and data redundancy is good.
(2) wide ranges is surveyed, range ability can reach 0 ~ 200G Ω, and range ability can be changed automatically, it is the hypothesis testing instrument measuring the insulation resistances such as high-power transformer, mutual inductor, generator, high-tension motor, electric capacitor, power cable, lightning arrester.
(3) portable design is adopted, compact, lightweight, easy to use, be convenient to field operation.
(4) safer, built-in residual high voltage discharge circuit, is completed the residual high pressure that can automatically bleed off on equipment under test.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the circuit diagram of the utility model metering circuit module.
Embodiment
Below by embodiment, and by reference to the accompanying drawings, the technical solution of the utility model is described in further detail.
Embodiment 1:
See Fig. 1, a kind of Insulation Resistance Tester, comprise: numerical controlled voltage module, direct current output module, bleeder circuit module, metering circuit module, controller, human-computer interaction module, wherein: controller is connected with numerical controlled voltage module, metering circuit, human-computer interaction module; The input end of direct current output module is connected with numerical controlled voltage module, and output terminal is connected with the input end of metering circuit by a bleeder circuit, and connects insulation resistance to be tested between the output terminal of direct current output module and the input end of metering circuit; Human-computer interaction module, comprising: keyboard, liquid crystal display, communication interface, and the controller model of this practicality is the ARM microcontroller of STM32F103, has analog quantity conversion, analog output, communication bus interface etc.; Numerical controlled voltage module receives the analog quantity pressure regulation signal of controller, exports to direct current output module, makes it the high direct voltage of output 0 ~ 10kV, be loaded on test specimen; The low-voltage signal that the high-voltage signal of 0 ~ 10kV is reduced to 0 ~ 5V by bleeder circuit by conditioned to voltage signal, current signal, sends into controller to metering circuit, metering circuit; Keyboard liquid crystal and communication interface are the Man Machine Interface of instrument.
As shown in Figure 2, metering circuit comprises the identical measuring unit at least six tunnels, each road measuring unit includes: the first amplifier, second amplifier, the 3rd amplifier, the reverse input end of the first amplifier is connected with test circuit input end BNC6 by resistance R63, input end is by resistance R69 ground connection in the same way for it, and its output terminal is connected with the input end in the same way of the second amplifier by resistance R67; The reverse input end of the second amplifier is connected with its output terminal, its output terminal is connected with the input end in the same way of the 3rd amplifier by resistance R65, R66, be connected with metering circuit output terminal by resistance R68 again after the reverse input end of the 3rd amplifier is connected with its output terminal, circuit between resistance R65, R66 is connected with the output terminal of the 3rd amplifier by resistance C54, test circuit input end pin BNC6 is also by Transient Suppression Diode ground connection, and resistance R67 is by electric capacity C56 ground connection; The differential amplifier of the first amplifier to be model be INA128, its 4 pin is by electric capacity C58 ground connection, and 7 pin are by electric capacity C52 ground connection, and 5 pin ground connection, and 7 pins are also connected to a malleation, 4 pins are also connected to a negative pressure.The positive pole pin of the second amplifier is connected with a malleation by resistance R64, and its negative pole pin is connected with a negative pressure by resistance R70, and resistance R70 and resistance R64 is also respectively by electric capacity C57 and electric capacity C53 ground connection.Each measuring unit also comprises a terminal block P, and resistance R68 is connected with controller by terminal block P.
Specific embodiment described herein is only to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various amendment or supplements or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present utility model or surmount the scope that appended claims defines.
Claims (8)
1. an Insulation Resistance Tester, is characterized in that, comprising: numerical controlled voltage module, direct current output module, bleeder circuit module, metering circuit module, controller, wherein: described controller is connected with numerical controlled voltage module, metering circuit; The input end of described direct current output module is connected with numerical controlled voltage module, output terminal is connected with the input end of metering circuit by a bleeder circuit, and connects insulation resistance to be tested between the output terminal of described direct current output module and the input end of metering circuit.
2. a kind of Insulation Resistance Tester according to claim 1, is characterized in that, also comprises the human-computer interaction module be connected with controller, and described human-computer interaction module comprises: keyboard, liquid crystal display, communication interface.
3. a kind of Insulation Resistance Tester according to claim 1, is characterized in that, described controller model is the ARM microcontroller of STM32F103.
4. a kind of Insulation Resistance Tester according to claim 1, it is characterized in that, described metering circuit comprises the identical measuring unit at least six tunnels, each road measuring unit includes: the first amplifier, second amplifier, the 3rd amplifier, the reverse input end of described first amplifier is connected with test circuit input end BNC6 by resistance R63, and input end is by resistance R69 ground connection in the same way for it, and its output terminal is connected with the input end in the same way of the second amplifier by resistance R67; The reverse input end of described second amplifier is connected with its output terminal, its output terminal is connected with the input end in the same way of the 3rd amplifier by resistance R65, R66, be connected with metering circuit output terminal by resistance R68 after the reverse input end of described 3rd amplifier is connected with its output terminal, described circuit between resistance R65, R66 is connected with the output terminal of the 3rd amplifier by resistance C54 again.
5. a kind of Insulation Resistance Tester according to claim 4, is characterized in that, test circuit input end pin BNC6 is also by Transient Suppression Diode ground connection, and described resistance R67 is by electric capacity C56 ground connection.
6. a kind of Insulation Resistance Tester according to claim 4, it is characterized in that, the differential amplifier of described first amplifier to be model be INA128, its 4 pin is by electric capacity C58 ground connection, 7 pin are by electric capacity C52 ground connection, 5 pin ground connection, and described 7 pin are also connected to a malleation, and described 4 pin are also connected to a negative pressure.
7. a kind of Insulation Resistance Tester according to claim 4, it is characterized in that, the positive pole pin of described second amplifier is connected with a malleation by resistance R64, its negative pole pin is connected with a negative pressure by resistance R70, and described resistance R70 and resistance R64 is also respectively by electric capacity C57 and electric capacity C53 ground connection.
8. a kind of Insulation Resistance Tester according to claim 4, is characterized in that, each measuring unit described also comprises a terminal block P, and described resistance R68 is connected with controller by terminal block P.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420719778.3U CN204269730U (en) | 2014-11-26 | 2014-11-26 | A kind of Insulation Resistance Tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420719778.3U CN204269730U (en) | 2014-11-26 | 2014-11-26 | A kind of Insulation Resistance Tester |
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| Publication Number | Publication Date |
|---|---|
| CN204269730U true CN204269730U (en) | 2015-04-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420719778.3U Expired - Fee Related CN204269730U (en) | 2014-11-26 | 2014-11-26 | A kind of Insulation Resistance Tester |
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| Country | Link |
|---|---|
| CN (1) | CN204269730U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106848446A (en) * | 2016-12-28 | 2017-06-13 | 深圳天珑无线科技有限公司 | A kind of method and device for detecting lithium battery micro-short circuit point |
| CN108169648A (en) * | 2018-02-07 | 2018-06-15 | 上海健康医学院 | A kind of electrosurgical equipment insulation defect detector |
-
2014
- 2014-11-26 CN CN201420719778.3U patent/CN204269730U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106848446A (en) * | 2016-12-28 | 2017-06-13 | 深圳天珑无线科技有限公司 | A kind of method and device for detecting lithium battery micro-short circuit point |
| CN108169648A (en) * | 2018-02-07 | 2018-06-15 | 上海健康医学院 | A kind of electrosurgical equipment insulation defect detector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150415 Termination date: 20161126 |
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| CF01 | Termination of patent right due to non-payment of annual fee |