CN204759862U - Testing transformer is used in training - Google Patents
Testing transformer is used in training Download PDFInfo
- Publication number
- CN204759862U CN204759862U CN201520559283.3U CN201520559283U CN204759862U CN 204759862 U CN204759862 U CN 204759862U CN 201520559283 U CN201520559283 U CN 201520559283U CN 204759862 U CN204759862 U CN 204759862U
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- winding coil
- winding
- testing transformer
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- 238000012360 testing method Methods 0.000 title claims abstract description 43
- 238000012549 training Methods 0.000 title claims abstract description 17
- 238000004804 winding Methods 0.000 claims abstract description 62
- 238000005259 measurement Methods 0.000 claims abstract description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
Abstract
The utility model discloses a testing transformer is used in training, including testing transformer T1, it is concrete including primary winding coil L -N, secondary high voltage winding coil A -X and measurement winding coil a -x, two wiring ends of secondary high voltage winding coil are A and X respectively, the two wiring ends of measuring the winding coil are an and x respectively, the A wiring termination of secondary high voltage winding coil is tried electric power mutual -inductor T2's a side winding, wiring end X ground connection, remove testing transformer T1's secondary high voltage winding coil, but remain two wiring end A and X, remain and measure winding coil a -x, wiring end A connects by examination electric power mutual -inductor T2's a side winding, wiring end X ground connection, testing transformer T1's secondary side increases a secondary low voltage winding 1a -1x, cascades rectifier module, voltage -controlled audio module controls and loudspeaker in secondary low voltage winding 1a -1x's back level. Both can reach the same with before of testing transformer outward appearance after the improvement, guarantee testing personnel's safety simultaneously again to the mesh of real standard has been reached.
Description
Technical field
The utility model relates to electrical network training device technique field, particularly relates to a kind of training testing transformer.
Background technology
Mutual inductor power frequency withstand test is a kind of destructive test in order to examine mutual inductor major insulation intensity and inspection local defect.Usually in mutual inductor handing-over, after overhaul or carry out if desired.This test used by major equipment be testing transformer.
Fig. 1 is existing 35kV electric pressure mutual inductor winding to the power frequency withstand test key wiring diagram on Secondary Winding and ground.T1 is testing transformer, and T2 is tested electric power mutual-inductor.U, X are Secondary Winding two terminals of a winding two terminals of tested electric power mutual-inductor, the tested electric power mutual-inductor of u, x.
According to correlation test standard, power frequency withstand test is carried out to the mutual inductor of 35kV electric pressure, T1 should apply 80/95kV (wet examination/dry examination) voltage on T2, and continue 1min, period, input current, the voltage of testing transformer answered ripple disable, and test specimen (T2) should be as good as the phenomenon such as sound and peculiar smell and occur.
In the power frequency withstand test Project Training process of carrying out new employee's electric power mutual-inductor certificate test, because the trial voltage applied is very high, add that student is more, the equipment use frequency is high and the reason such as safe distance that is each station is limited, in order to ensure real training personnel and device security, general real training of not carrying out the power frequency withstand test project of mutual inductor, but this technical ability is again the technical ability that on-the-spot electrically personnel must grasp, so need a kind of not only safety but also the equipment of real training demand can be met.
Utility model content
The purpose of this utility model is exactly to solve the problem, and provides a kind of training testing transformer, both can reach identical with before of the testing transformer outward appearance after improvement, in turn ensure that the safety of testing crew simultaneously, and reach the object of real training.
To achieve these goals, the utility model adopts following technical scheme:
A kind of training testing transformer, comprise testing transformer T1, specifically comprise primary winding coils L-N, secondary high-pressure winding coil A-X and measure winding coil a-x, two terminals of secondary high-pressure winding coil are respectively A and X, two terminals measuring winding coil are respectively a and x, the side winding of the tested electric power mutual-inductor T2 of A wiring termination of secondary high-pressure winding coil, terminals X ground connection
Remove the secondary high-pressure winding coil of testing transformer T1, but retain two terminals A and X, retain and measure winding coil a-x; Terminals A connects the side winding of tested electric power mutual-inductor T2, terminals X ground connection; The secondary side of testing transformer T1 increases a secondary low-voltage winding 1a-1x, at the rear class cascade rectifier module of secondary low-voltage winding 1a-1x, voltage-controlled audio frequency control module and loudspeaker.
The no-load voltage ratio of primary winding coils L-N and secondary low-voltage winding 1a-1x is 220V/5V.
Primary winding coils L-N is 220V/100V with the no-load voltage ratio of measurement winding coil a-x.
Along with the increase gradually from low to high of testing transformer secondary voltage, loudspeaker can send along with voltage increases and the corona sound of increase.Like this guarantee safe while reach the object of real training.
Due to when exerting pressure, the secondary voltage that testing transformer (T1) produces is very high, testing crew want to know be applied to tested mutual inductor winding over the ground between concrete numerical value, not the secondary high voltage directly measuring T1, but by being measure the voltage at winding coil a-x two ends by monitoring T1 to judge.In other words, when the voltage between L, N of T1 reaches 220V, the voltage between its output terminals A, X can reach 100kV, and the voltage now measuring winding coil a-x two ends is 100V.See conversely, when the voltage measuring winding coil ax two ends is 95V, just illustrate that the voltage between A, X can reach 95kV.
The beneficial effects of the utility model:
The utility model both can reach identical with before of the testing transformer outward appearance after improvement, in turn ensure that the safety of testing crew simultaneously, and reached the object of real training.
Accompanying drawing explanation
Fig. 1 is existing power frequency withstand test key wiring diagram;
Fig. 2 is structural representation of the present utility model;
Wherein 1 is rectification module, and 2 is voltage-controlled audio frequency control module, and 3 is loudspeaker.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the utility model is described in further detail.
As shown in Figure 2, remove the secondary high-pressure winding coil A-X of testing transformer T1, but retain two terminals A and X, retain and measure winding coil a-x; Terminals A connects the side winding of tested electric power mutual-inductor T2, terminals X ground connection; The secondary side of testing transformer T1 increases a secondary low-voltage winding 1a-1x, at the rear class cascade rectifier module 1 of secondary low-voltage winding 1a-1x, voltage-controlled audio frequency control module 2 and loudspeaker 3.The no-load voltage ratio of primary winding coils L-N and secondary low-voltage winding 1a-1x is 220V/5V.Primary winding coils L-N is 220V/100V with the no-load voltage ratio of measurement winding coil a-x.
After removing secondary high-pressure winding coil A-X, the voltage between terminals A and X is actual has been 0, but the practicality in order to train, and outward appearance mark and nameplate all need to write 100KV between terminals A and X.
By reference to the accompanying drawings embodiment of the present utility model is described although above-mentioned; but the restriction not to the utility model protection domain; one of ordinary skill in the art should be understood that; on the basis of the technical solution of the utility model, those skilled in the art do not need to pay various amendment or distortion that creative work can make still within protection domain of the present utility model.
Claims (3)
1. a training testing transformer, comprise testing transformer T1, specifically comprise primary winding coils L-N, secondary high-pressure winding coil A-X and measure winding coil a-x, two terminals of secondary high-pressure winding coil are respectively A and X, two terminals measuring winding coil are respectively a and x, the side winding of the tested electric power mutual-inductor T2 of A wiring termination of secondary high-pressure winding coil, terminals X ground connection, it is characterized in that
Remove the secondary high-pressure winding coil of testing transformer T1, but retain two terminals A and X, retain and measure winding coil a-x; Terminals A connects the side winding of tested electric power mutual-inductor T2, terminals X ground connection; The secondary side of testing transformer T1 increases a secondary low-voltage winding 1a-1x, at the rear class cascade rectifier module of secondary low-voltage winding 1a-1x, voltage-controlled audio frequency control module and loudspeaker.
2. a kind of training testing transformer as claimed in claim 1, it is characterized in that, the no-load voltage ratio of primary winding coils L-N and secondary low-voltage winding 1a-1x is 220V/5V.
3. a kind of training testing transformer as claimed in claim 1, it is characterized in that, the no-load voltage ratio of primary winding coils L-N and measurement winding coil a-x is 220V/100V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520559283.3U CN204759862U (en) | 2015-07-29 | 2015-07-29 | Testing transformer is used in training |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520559283.3U CN204759862U (en) | 2015-07-29 | 2015-07-29 | Testing transformer is used in training |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204759862U true CN204759862U (en) | 2015-11-11 |
Family
ID=54474545
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520559283.3U Expired - Fee Related CN204759862U (en) | 2015-07-29 | 2015-07-29 | Testing transformer is used in training |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204759862U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105516861A (en) * | 2016-01-20 | 2016-04-20 | 武汉史塔克科技发展有限公司 | Device for controlling corona to generate audio frequency |
-
2015
- 2015-07-29 CN CN201520559283.3U patent/CN204759862U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105516861A (en) * | 2016-01-20 | 2016-04-20 | 武汉史塔克科技发展有限公司 | Device for controlling corona to generate audio frequency |
| CN105516861B (en) * | 2016-01-20 | 2019-04-12 | 武汉史塔克科技发展有限公司 | A kind of control corona generates the device of audio |
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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: 20151111 Termination date: 20170729 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |