CN207396686U - A kind of high-voltage switch gear contact timing sequence test equipment - Google Patents
A kind of high-voltage switch gear contact timing sequence test equipment Download PDFInfo
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- CN207396686U CN207396686U CN201721251821.8U CN201721251821U CN207396686U CN 207396686 U CN207396686 U CN 207396686U CN 201721251821 U CN201721251821 U CN 201721251821U CN 207396686 U CN207396686 U CN 207396686U
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- timing sequence
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- switch gear
- voltage switch
- sampling
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Abstract
The utility model discloses a kind of high-voltage switch gear contact timing sequence test equipment, including sampling module, A/D conversion circuits, main control unit, level shifting circuit, LCD display output module and keyboard operation module, it is simple in structure, compact, it is easy to carry, the equipment samples the electric current of main contact and auxiliary contact when division operates by sampling module, sampled signal passes through A/D conversion circuits, analog quantity is converted into digital quantity, by main control unit computing, timing sequence test result exports display by LCD screen with treated, the keyboard of the equipment is tested for completing to start, the operations such as reset test and selection test pattern, it is easy to operate.
Description
Technical field
The utility model is related to a kind of test equipment, more particularly to a kind of high-voltage switch gear contact timing sequence test equipment.’
Background technology
Important component of the high-tension switch gear as high-tension power transmission and transformation equipment, division operation and mechanism auxiliary switch
Between when ordered pair high-tension power transmission and transformation equipment reliability service have highly important influence.Since relay protection and control circuit needs
The mechanism auxiliary contact of high-tension switch gear are accessed, therefore answer strict guarantee mechanism auxiliary contact and relay protection and control circuit good
It is good to coordinate and coordinate.
However, existing test platform due to bulky, can not carry, it is difficult to meet the needs of on-the-spot test.Therefore
At present mostly by the way of replacing auxiliary switch element and carrying out operating operation test, to select qualified auxiliary switch.But this method needs
The work such as a large amount of repeat elements replacements and operating operation test are wanted, there are the problems such as efficiency is low, precision is low, error is big.
Utility model content
The purpose of this utility model is to provide a kind of high-voltage switch gear contact timing sequence test equipment, can be at power station scene to height
Compress switch the equipment that division conversion timing sequence is tested between main contact and mechanism auxiliary contact, and intuitively reflects test result.
To solve the above-mentioned problems, the utility model adopts the following technical solution：
A kind of high-voltage switch gear contact timing sequence test equipment, including sampling module, A/D conversion circuits, main control unit, level
Conversion circuit, LCD display output module and keyboard operation module；
Sampling module includes voltage sensor and signal isolation module, and sampled signal passes through A/D conversion circuits by analog quantity
Digital quantity is converted into, the computing and processing of digital signal, LCD display output module and main control list are carried out for main control unit
Member connection is for showing timing sequence test as a result, each module of test equipment is connected with power supply by level shifting circuit and takes electricity, keyboard
Operation module starts the functions such as test, reset test and selection test pattern for completion.
Further, the sampling module includes 3 sampling channels, wherein 2 sampling channels are auxiliary for high-voltage switch gear mechanism
Contact is helped to sample, 1 sampling channel samples for high-voltage switch gear main contact.
Further, keyboard operation module uses small controller key-press module.
Further, the level shifting circuit is powered by external power supply.
Further, the main control unit is made of digital signal processor and large scale integrated chip.
The high-voltage switch gear contact timing sequence test equipment of the utility model, including sampling module, A/D conversion circuits, main control
Unit, level shifting circuit, LCD display output module and keyboard operation module, it is simple in structure, it is compact, easy to carry,
The equipment samples the electric current of main contact and auxiliary contact when division operates by sampling module, and sampled signal passes through A/
Analog quantity is converted into digital quantity by D conversion circuits, and by main control unit computing, timing sequence test result passes through with treated
LCD screen output display, the keyboard of the equipment start the operations such as test, reset test and selection test pattern, behaviour for completion
Facilitate.
Further, have multi-channel sampling passage, can be used for testing high voltage switch main contact, the normally opened auxiliary contact of mechanism,
The sequential of multiple spot, highly practical between normally closed auxiliary contact.
Further, the level shifting circuit is powered by external power supply, it is possible to provide multichannel difference DC level is master control
Unit processed and LCD display module etc. provide working power.
The high-voltage switch gear contact timing sequence test equipment of the utility model can be used for test breaker, disconnecting switch, ground connection to open
A variety of high-tension switch gears such as pass, different test patterns set different time biass, reducing metal short circuit time.
Description of the drawings
Fig. 1 is the composition frame chart of high-voltage switch gear contact timing sequence test equipment.
Specific embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings.
As shown in Figure 1, the high-voltage switch gear contact timing sequence test equipment of the utility model, including sampling module, A/D conversion electricity
Road, main control unit, level shifting circuit, LCD display output module, keyboard operation module etc..
Sampling module includes sensor and signal isolation module.Sampling module provides 3 sampling channels, wherein 2 samplings
Passage is used for the sampling of high-voltage switch gear mechanism auxiliary contact, and 1 sampling channel can be used for high-voltage switch gear main contact or mechanism to aid in
The sampling of contact.Sampled signal passes through A/D conversion circuits, and analog quantity is converted into digital quantity, and number is carried out for main control unit
The computing and processing of signal.Main control unit uses high-performance digital signal processor (DSP) and large scale integrated chip
(LSIC)。
By main control unit treated signal output to LCD display, timing sequence test visual result is shown.Keyboard
Operation module uses small controller key-press module, can complete to start the work(such as test, reset test and selection test pattern
Energy.Different test patterns correspond to 3 sampling channels and are connected on different position.
Above scheme can effectively realize the test to division conversion timing sequence between high-voltage switch gear main contact and auxiliary contact,
And intuitively provide test result.The test equipment has stronger practicability and convenience at the scene.
Complete specific statement, still, reality described herein have been carried out to the technical solution in the utility model herein
Example is only a part of example, is not whole examples.On the basis of the utility model, those skilled in the art are not making
Other examples obtained on the premise of innovative works belong to the scope of the utility model protection.
Claims (5)
1. a kind of high-voltage switch gear contact timing sequence test equipment, it is characterised in that：Including sampling module, A/D conversion circuits, main control
Unit, level shifting circuit, LCD display output module and keyboard operation module；
Sampling module includes voltage sensor and signal isolation module, and sampled signal converts analog quantity by A/D conversion circuits
For digital quantity, the computing and processing of digital signal are carried out for main control unit, LCD display output module connects with main control unit
It connects to show timing sequence test as a result, each module of test equipment is connected with power supply by level shifting circuit and takes electricity, keyboard operation
Module starts test, reset test and selection test pattern function for completion.
2. high-voltage switch gear contact timing sequence test equipment according to claim 1, it is characterised in that：The sampling module includes
3 sampling channels, wherein 2 sampling channels, for the auxiliary contact sampling of high-voltage switch gear mechanism, 1 sampling channel presses off for height
Close main contact sampling.
3. high-voltage switch gear contact timing sequence test equipment according to claim 1, it is characterised in that：Keyboard operation module uses
Small controller key-press module.
4. high-voltage switch gear contact timing sequence test equipment according to claim 1, it is characterised in that：The level shifting circuit
It is powered by external power supply.
5. high-voltage switch gear contact timing sequence test equipment according to claim 1, it is characterised in that：The main control unit by
Digital signal processor and large scale integrated chip composition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721251821.8U CN207396686U (en) | 2017-09-27 | 2017-09-27 | A kind of high-voltage switch gear contact timing sequence test equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721251821.8U CN207396686U (en) | 2017-09-27 | 2017-09-27 | A kind of high-voltage switch gear contact timing sequence test equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207396686U true CN207396686U (en) | 2018-05-22 |
Family
ID=62405237
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721251821.8U Active CN207396686U (en) | 2017-09-27 | 2017-09-27 | A kind of high-voltage switch gear contact timing sequence test equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207396686U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2595946A (en) * | 2020-06-01 | 2021-12-15 | Zhu Gong | Testing method for conduct synchronism of dual power transfer switch and apparatus thereof |
| GB2595945A (en) * | 2020-06-01 | 2021-12-15 | Zhu Gong | Collecting and measuring method for conduct transition time of dual power transfer switch and apparatus thereof |
-
2017
- 2017-09-27 CN CN201721251821.8U patent/CN207396686U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2595946A (en) * | 2020-06-01 | 2021-12-15 | Zhu Gong | Testing method for conduct synchronism of dual power transfer switch and apparatus thereof |
| GB2595945A (en) * | 2020-06-01 | 2021-12-15 | Zhu Gong | Collecting and measuring method for conduct transition time of dual power transfer switch and apparatus thereof |
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