CN208334579U - Portable air-switch RTA reliability test assembly - Google Patents
Portable air-switch RTA reliability test assembly Download PDFInfo
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- CN208334579U CN208334579U CN201820653295.6U CN201820653295U CN208334579U CN 208334579 U CN208334579 U CN 208334579U CN 201820653295 U CN201820653295 U CN 201820653295U CN 208334579 U CN208334579 U CN 208334579U
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- air switch
- microcontroller
- voltage sensor
- conversion unit
- switch
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- 238000012360 testing method Methods 0.000 title claims abstract description 36
- 238000006243 chemical reaction Methods 0.000 claims abstract description 13
- 238000005259 measurement Methods 0.000 claims abstract description 7
- 238000001514 detection method Methods 0.000 claims abstract description 5
- 238000009413 insulation Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
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Abstract
本实用新型公开了一种便携式空气开关可靠性测试装置，包括依次串接的可编程式交直流电源、微控制器、电流传感器和电压传感器、并接在电压传感器两端用于连接被测空气开关的检测点、以及模数转换单元和显示屏，微控制器内置时间测量模块，电流传感器和电压传感器分别与模数转换单元的输入端连接，模数转换单元的输出端通过微控制器与显示屏连接。本实用新型的便携式空气开关可靠性测试装置，可进行空气开关模拟加压测试和过流脱扣测试，在设定的电压和电流下测量空气开关的绝缘性能和安秒特性，实现对空气开关可靠性的检测。
The utility model discloses a portable air switch reliability testing device, which comprises a programmable AC and DC power supply, a micro-controller, a current sensor and a voltage sensor which are serially connected in sequence, and are connected in parallel at both ends of the voltage sensor for connecting the tested air The detection point of the switch, the analog-to-digital conversion unit and the display screen, the microcontroller has a built-in time measurement module, the current sensor and the voltage sensor are respectively connected to the input end of the analog-to-digital conversion unit, and the output end of the analog-to-digital conversion unit communicates with the microcontroller through the microcontroller. Display connection. The portable air switch reliability testing device of the utility model can carry out the simulated pressure test and overcurrent tripping test of the air switch, measure the insulation performance and ampere-second characteristics of the air switch under the set voltage and current, and realize the detection of the air switch. reliability test.
Description
Technical field
The utility model relates to electrical and electronic technology fields, and in particular to a kind of dress for detecting air switch reliability
It sets.
Background technique
Air switch is widely used in electrically and in the control of electronic correlation engineering, protection system, in addition to that can complete contact
Outside disjunction circuit, short circuit, heavy overload and the under-voltage etc. that still circuit or electrical equipment can occur are protected.Operation is real
Proof is trampled, over time, the technical indicator of equipment may shift, and artifacts are that circuit breaker characteristic becomes
Change, to cause tripping, malfunction or overstepping, is easy to cause the control function failure to equipment, further expansion failure, danger
And the safe operation of power grid.
When testing air switch performance, need to temporarily be built using instruments such as relay protection instrument, megger, variable resistance, oscillographs
Different test loops, then recording on oscillograph is read out and data processing, influence engineering failure investigation efficiency.In addition,
To avoid the air switch spare unit of replacement, there are quality problems, should also carry out air switch reliability test before replacement.
Utility model content
The purpose of the utility model is to provide a kind of portable air-switch RTA reliability test assemblies, it is possible to provide air switch
Applied voltage test and overcurrent tripping test loop are simulated, to detect air switch reliability.
In order to achieve the above object, the technical scheme adopted by the utility model is that:
A kind of portable air-switch RTA reliability test assembly, including the programmable power of alterating and direct current, micro- being sequentially connected in series
Controller, current sensor and voltage sensor are attempted by voltage sensor both ends for connecting the detection of tested air switch
Point and AD conversion unit and display screen, microcontroller built-in time measurement module, current sensor and voltage sensor point
It is not connect with the input terminal of AD conversion unit, the output end of AD conversion unit is connect by microcontroller with display screen.It can
Programmatic method power of alterating and direct current is used to provide adjustable power supply, available size of current to air switch reliability test circuit
At 5 times or more of air switch rated operational current；Tested air switch is connected to test point, and voltage sensor measures air
Switch on-state and both ends pressure drop under state is cut-off, the electric current flowed through in current sensor measurement circuit is built-in in microcontroller
Time measurement module measure the ampere-time characteristic under different electric currents；All test results are transmitted to AD conversion unit processing, send
Serial ports screen is connected by communication serial ports after to microcontroller to show.
It further, is the overcurrent for avoiding circuit, test device further includes being serially connected in voltage sensor and programmable
Current-limiting resistance between power of alterating and direct current.
Compared with prior art, the utility model has the beneficial effects that:
The portable air-switch RTA reliability test assembly of the utility model, can carry out air switch simulation applied voltage test and
Overcurrent tripping test, measures the insulation performance and ampere-time characteristic of air switch under the voltage and current of setting, realizes to air
Switch the detection of reliability.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model portable air-switch RTA reliability test assembly；
Description of symbols: the programmable power of alterating and direct current of 1-；2- microcontroller；3- current sensor；4- voltage sensor
Device；5- current-limiting resistance；6- AD conversion unit；7- display screen；8- test point；9- is tested air switch.
Specific embodiment
The content of the utility model is described in further details with reference to the accompanying drawings and detailed description.
Embodiment:
It please refers to shown in Fig. 1, a kind of portable air-switch RTA reliability test assembly of the present embodiment includes programmable
Power of alterating and direct current 1, the microcontroller 2 of built-in time measurement module, current sensor 3, voltage sensor 4, current-limiting resistance 5, mould
Number converting unit 6 and display screen 7.Microcontroller 2, current sensor 3, voltage sensor 4 and current-limiting resistance 5 are serially connected in programmatic method
The both ends of power of alterating and direct current 1, two test points 8 for connecting tested air switch 9 are attempted by voltage sensor by connecting line
The both ends of device 4, to constitute air switch reliability test circuit.Current sensor 3 and voltage sensor 4 turn with modulus respectively
The input terminal connection of unit 6 is changed, the output end of AD conversion unit 6 is connect by microcontroller 2 with display screen 7.It is programmable
Power of alterating and direct current 1 is used to provide adjustable power supply to air switch reliability test circuit, and available size of current is in sky
5 times or more of air cock rated operational current.
When test, tested air switch 9 is connected to test point 8, contact and programmable power of alterating and direct current 1, microcontroller
Device 2, current sensor 3, voltage sensor 4 form test loop.In the case where voltage is arranged, tested air switch 9 is respectively placed in
State is turned on and off, by measuring its both ends pressure drop, analyzes the insulation characterisitic and hidden danger of tested air switch 9.In setting
Under different electric currents, is measured by time measurement module built-in in current sensor 3 and microcontroller 2 and be tested under different electric currents
The drop-away time of air switch 9, to test whether its ampere-time characteristic meets the requirements of the standard.Current sensor 3 and voltage sensor 4
Test result be transmitted to AD conversion unit 6, be converted into sending after digital quantity signal to microcontroller 2, own in microcontroller 2
Test data is exported by communicating serial ports RS232 to display screen 7, shows current test information.
Above-listed detailed description is illustrating for the utility model possible embodiments, and the embodiment is not to limit
The protection scope of the utility model, all equivalence enforcements or change without departing from carried out by the utility model, is intended to be limited solely by this case
In protection scope.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820653295.6U CN208334579U (en) | 2018-05-02 | 2018-05-02 | Portable air-switch RTA reliability test assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820653295.6U CN208334579U (en) | 2018-05-02 | 2018-05-02 | Portable air-switch RTA reliability test assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208334579U true CN208334579U (en) | 2019-01-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820653295.6U Active CN208334579U (en) | 2018-05-02 | 2018-05-02 | Portable air-switch RTA reliability test assembly |
Country Status (1)
| Country | Link |
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| CN (1) | CN208334579U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110907817A (en) * | 2019-12-13 | 2020-03-24 | 上海华电电力发展有限公司望亭发电分公司 | Air switch tripping characteristic detection device |
| CN112327146A (en) * | 2020-07-03 | 2021-02-05 | 国网山东省电力公司淄博供电公司 | Portable low pressure air switch comprehensive tester and its use method |
-
2018
- 2018-05-02 CN CN201820653295.6U patent/CN208334579U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110907817A (en) * | 2019-12-13 | 2020-03-24 | 上海华电电力发展有限公司望亭发电分公司 | Air switch tripping characteristic detection device |
| CN112327146A (en) * | 2020-07-03 | 2021-02-05 | 国网山东省电力公司淄博供电公司 | Portable low pressure air switch comprehensive tester and its use method |
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| GR01 | Patent grant | ||
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| CP03 | Change of name, title or address |
Address after: 510663 maintenance and test center, building 2, 223 science Avenue, Science City, Huangpu District, Guangzhou City, Guangdong Province Patentee after: China Southern Power Grid Corporation Ultra High Voltage Transmission Company Electric Power Research Institute Country or region after: China Address before: 510663 maintenance and test center, building 2, 223 science Avenue, Science City, Huangpu District, Guangzhou City, Guangdong Province Patentee before: MAINTENANCE & TEST CENTRE, CSG EHV POWER TRANSMISSION Co. Country or region before: China |