CN209417151U - A kind of convenient device for testing DC resistance of transformer - Google Patents
A kind of convenient device for testing DC resistance of transformer Download PDFInfo
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- CN209417151U CN209417151U CN201821957925.5U CN201821957925U CN209417151U CN 209417151 U CN209417151 U CN 209417151U CN 201821957925 U CN201821957925 U CN 201821957925U CN 209417151 U CN209417151 U CN 209417151U
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- 238000012360 testing method Methods 0.000 title claims abstract description 36
- 230000001105 regulatory effect Effects 0.000 claims abstract description 25
- 230000001276 controlling effect Effects 0.000 description 4
- 230000005611 electricity Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000003449 preventive effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000011265 semifinished product Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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- Measurement Of Resistance Or Impedance (AREA)
- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
The utility model discloses a kind of convenient device for testing DC resistance of transformer, including instrument for measuring DC resistance and on-load voltage regulating switch control box, the instrument for measuring DC resistance is equipped with lifting shelves switching switch, upshift button, down-shift button, plant-grid connection terminal, upshift leading-out terminal and downshift leading-out terminal；The on-load voltage regulating switch control box is equipped with upshift leading-in terminal and downshift leading-in terminal；Upshift leading-out terminal is connect by connecting line with upshift leading-in terminal, and downshift leading-out terminal is connect by connecting line with downshift leading-in terminal.The utility model increases corresponding lifting/lowering shelves button switch and corresponding external interface in instrument for measuring DC resistance panel, increase corresponding calibrating terminal in on-load voltage regulating switch control box, by accordingly testing wiring connection, a people can be realized and carry out the operation of D.C. resistance test and the remote operation of on-load voltage regulating switch before tool face, greatly shorten the prerun time of main transformer while reducing testing crew demand.
Description
Technical field
The utility model relates to a kind of convenient device for testing DC resistance of transformer.
Background technique
The D.C. resistance of transformer is semi-finished product in transformer manufacturing, finished product delivery test, installation, commissioning test and electric power
The required test item of department's preventive trial can effectively find that the selection, welding, connecting portion of transformer coil loosen, lack stock, is disconnected
Existing hidden danger after the manufacturing defect such as line and operation.
D.C. resistance test for high-power transformer, after completing test connection, because tap changer is generally positioned at change
Depressor side, and instrument for measuring DC resistance device is limited to test connection and is generally disposed at transformer front, when test, needs a people
Operate instrument, another people carries out lifting gear operation to on-load voltage regulating switch, and every main transformer more than two people must cooperate ability
Complete test.And the gear of main transformer is more, if 500kV main transformer shares 17 gears, each gear is both needed to operation test, and three-phase is equal
It tests, takes a long time, test efficiency is lower.In addition, being limited to test connection, each test cooperation personnel are apart from each other (big
The three-phase integrated main transformer of type will appear operation instrument personnel and operate on-load voltage regulating switch personnel at a distance of 10m or more situation), into
Respectively cooperate personnel to link up when row test to be not easy, further influences test efficiency.
Utility model content
In view of the deficiencies of the prior art, the utility model provides a kind of convenient device for testing DC resistance of transformer, right
Test instrument for measuring DC resistance used is transformed, and is modified to loaded switch control loop, realizes a people in instrument
Two work the remote operation of on-load voltage regulating switch (operation of instrument) can be completed in face of device, greatly shorten the prerun of main transformer
Time improves working efficiency.
To achieve the above object, the technical solution of the utility model is:
A kind of convenient device for testing DC resistance of transformer, including instrument for measuring DC resistance and on-load voltage regulating switch operation
Case, the instrument for measuring DC resistance are equipped with lifting shelves switching switch, upshift button, down-shift button, plant-grid connection terminal, upshift
Leading-out terminal and downshift leading-out terminal；The on-load voltage regulating switch control box is equipped with upshift leading-in terminal and downshift leading-in end
Son；Plant-grid connection terminal is connect with one end of upshift button and down-shift button respectively, and the other end for the button that upshifts is cut through going up and down shelves
It changes switch to connect with upshift leading-out terminal, upshift leading-out terminal is introduced by the upshift of connecting line and on-load voltage regulating switch control box
Terminal connection；The other end of down-shift button is connect through lifting shelves switching switch with downshift leading-out terminal, and downshift leading-out terminal passes through
Connecting line is connect with the downshift leading-in terminal of on-load voltage regulating switch control box.
The utility model increases corresponding lifting/lowering shelves button switch in instrument for measuring DC resistance panel and corresponding external connects
Mouthful, increase corresponding calibrating terminal in on-load voltage regulating switch control box, it can be by the lifting/lowering shelves function of on-load voltage regulating switch control box
Instrument for measuring DC resistance is led to be operated, realize a people can be completed in face of instrument for measuring DC resistance instrument operation and
The remote operation of on-load voltage regulating switch can carry out the test of two-phase or three-phase windings by a people, substantially reduce main transformer
The prerun time, improve work efficiency.
Detailed description of the invention
Fig. 1 is the principles of the present invention structure chart.
Specific embodiment
To keep the above objects, features, and advantages of the utility model more obvious and easy to understand, with reference to the accompanying drawing and have
Body embodiment is described in further detail the utility model.
It please refers to shown in Fig. 1, a kind of convenient device for testing DC resistance of transformer, including 1 He of instrument for measuring DC resistance
On-load voltage regulating switch control box 2.Wuhan Hua electricity tech Electric Applicance Co., Ltd HDKY-SZ10AD can be used in instrument for measuring DC resistance 1
Type three-phase 10A instrument for measuring DC resistance, can measure the D.C. resistance of three-phase 10A and the D.C. resistance of single-phase 20A, and screen uses
Large screen high-resolution liquid crystal display screen, facilitates live use, has menu in Chinese prompt facility, easy to operate intuitive, once
All direct resistance metering projects are completed in wiring, and test speed is fast, and accuracy is high, broad quantum.On-load voltage regulating switch control box 2 is then change
Depressor is matched for operating the control equipment of on-load voltage regulating switch.
The operation panel of instrument for measuring DC resistance 1 is equipped with lifting shelves switching switch 3, upshift button 4, down-shift button 5, electricity
Terminal 6, upshift leading-out terminal 7 and downshift leading-out terminal 8 are accessed in source.Plant-grid connection terminal 6 is two, for opening with on-load voltage regulation
Close the connection of the matched firewire of control box 2, the connection of a plant-grid connection terminal 6 and upshift button 4, another plant-grid connection terminal
6 with the connection of down-shift button 5, lifting shelves switching switch 3 is ganged switch, and upper switch is connected to upshift button 4 and upshift extraction
Between terminal 7, lower switch is connected between down-shift button 5 and downshift leading-out terminal 8.
On-load voltage regulating switch control box 1 includes measure and control device 11, upshift controlling switch 12, downshift controlling switch 13, upshift
Operating mechanism 14 and downshift operating mechanism 15,11 one end of measure and control device are connect with firewire, and the other end is divided into two-way, all the way through upshifing
It is connect after control switch 12, upshift operating mechanism 14 with zero curve, another way is after downshift controlling switch 13, downshift operating mechanism 15
It is connect with zero curve, in order to realize the remote control of instrument for measuring DC resistance 1, in upshift controlling switch 12 and upshift operating mechanism 14
Between setting upshift leading-in terminal 9, and connect with the upshift leading-out terminal 7 of instrument for measuring DC resistance 1 by connecting line, downshifted
Setting downshift leading-in terminal 10 between control switch 13 and downshift operating mechanism 15, and pass through connecting line and instrument for measuring DC resistance
1 downshift leading-out terminal 8 connects.
When going up and down the shelves switching opening of switch 3, upshift button 4 is connected to upshift leading-out terminal 7, down-shift button 5 and downshift
Leading-out terminal 8 be connected to, can by the upshift button 4 of instrument for measuring DC resistance 1 carry out upshift operation, by down-shift button 5 into
Row downshift operation, to realize the remote control by instrument for measuring DC resistance 1 to on-load voltage regulating switch.
The utility model is transformed instrument for measuring DC resistance 1 and on-load voltage regulating switch control box 2, by accordingly testing
The connection of wiring can be realized a people carried out before tool face D.C. resistance test operation and on-load voltage regulating switch it is long-range
The prerun time of main transformer is greatly shortened in operation while reducing testing crew demand, improve working efficiency, have a wide range of application,
It is suitble to each plant stand high-power transformer interruption maintenance and conventional preventive trial work.
Assuming that the direct resistance metering time of a gear is T, then the time of former test three-phase is wanted: T*2*17*3=102T (when/
People).After improvement, it can achieve a people and just finish direct resistance metering, and save more people and cooperate time, the testing time of each gear
Assuming that be reduced to 0.9T, if according to original test method by mutually being tested, then total testing time are as follows: 0.9T*17*3=
45.9T；If three-phase carries out simultaneously, total testing time are as follows: 0.9T*17=15.3T.Time optimal can only need original
15%, human cost can be greatlyd save in this way and shortens power off time.
Above-listed detailed description is illustrating for the utility model possible embodiments, and the embodiment is not to limit
The scope of the patents 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 the scope of the patents.
Claims (1)
1. a kind of convenient device for testing DC resistance of transformer, including instrument for measuring DC resistance and on-load voltage regulating switch operation
Case, it is characterised in that: the instrument for measuring DC resistance is equipped with lifting shelves switching switch, upshift button, down-shift button, power supply and connects
Enter terminal, upshift leading-out terminal and downshift leading-out terminal；The on-load voltage regulating switch control box be equipped with upshift leading-in terminal and
Downshift leading-in terminal；Plant-grid connection terminal is connect with one end of upshift button and down-shift button respectively, the other end for the button that upshifts
It is connect through lifting shelves switching switch with upshift leading-out terminal, upshift leading-out terminal passes through connecting line and on-load voltage regulating switch control box
Upshift leading-in terminal connection；The other end of down-shift button is connect through lifting shelves switching switch with downshift leading-out terminal, and downshift is drawn
Terminal is connect by connecting line with the downshift leading-in terminal of on-load voltage regulating switch control box out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821957925.5U CN209417151U (en) | 2018-11-26 | 2018-11-26 | A kind of convenient device for testing DC resistance of transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821957925.5U CN209417151U (en) | 2018-11-26 | 2018-11-26 | A kind of convenient device for testing DC resistance of transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209417151U true CN209417151U (en) | 2019-09-20 |
Family
ID=67935274
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821957925.5U Active CN209417151U (en) | 2018-11-26 | 2018-11-26 | A kind of convenient device for testing DC resistance of transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209417151U (en) |
-
2018
- 2018-11-26 CN CN201821957925.5U patent/CN209417151U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: BAODING JINDA ELECTRIC POWER TECHNOLOGY Co.,Ltd. Assignor: WUZHOU BUREAU, CSG EHV POWER TRANSIMISSION Co. Contract record no.: X2023980049383 Denomination of utility model: A Convenient Transformer DC Resistance Testing Device Granted publication date: 20190920 License type: Common License Record date: 20231206 |