CN107728092A - The automatic precision pre-check device and method of calibration of Transformer Winding no-load voltage ratio tester - Google Patents
The automatic precision pre-check device and method of calibration of Transformer Winding no-load voltage ratio tester Download PDFInfo
- Publication number
- CN107728092A CN107728092A CN201710925066.5A CN201710925066A CN107728092A CN 107728092 A CN107728092 A CN 107728092A CN 201710925066 A CN201710925066 A CN 201710925066A CN 107728092 A CN107728092 A CN 107728092A
- Authority
- CN
- China
- Prior art keywords
- winding
- leading screw
- slide plate
- verification
- voltage ratio
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000004804 winding Methods 0.000 title claims abstract description 126
- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000012795 verification Methods 0.000 claims abstract description 94
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 20
- 238000012360 testing method Methods 0.000 claims abstract description 12
- 230000000694 effects Effects 0.000 claims description 8
- 230000008878 coupling Effects 0.000 claims description 6
- 238000010168 coupling process Methods 0.000 claims description 6
- 238000005859 coupling reaction Methods 0.000 claims description 6
- 230000005611 electricity Effects 0.000 claims 1
- 229910052742 iron Inorganic materials 0.000 claims 1
- 230000008859 change Effects 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
- G01R35/005—Calibrating; Standards or reference devices, e.g. voltage or resistance standards, "golden" references
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Tests Of Circuit Breakers, Generators, And Electric Motors (AREA)
Abstract
The invention discloses a kind of automatic precision pre-check device of Transformer Winding no-load voltage ratio tester and method of calibration, solve cumbersome existing for the device that existing pair of transformer voltage ratio tester is verified, error rate is high and no-load voltage ratio test verifies discontinuous problem.Transformer Winding no-load voltage ratio tester and square shape iron core, are provided with verification winding on the iron core of square shape iron core, are provided with leading screw support frame and leading screw on the outside of verification winding, slide plate, upper verification winding are connected with feed screw nut（22）Top（20）, upper verification winding（22）End（21）, lower verification winding（23）Top（11）With lower verification winding（23）End（12）It is electrically connected respectively with Transformer Winding no-load voltage ratio tester.The present invention realizes the automatic continuous precisely verification to Transformer Winding no-load voltage ratio tester, and simple to operate, it is easy to realize.
Description
Technical field
The present invention relates to a kind of no-load voltage ratio verifying attachment, laboratory's inspection of more particularly to a kind of Transformer Winding no-load voltage ratio tester
Experiment device and accurate method of calibration.
Background technology
No-load voltage ratio and other specification of the transformer voltage ratio tester to the winding of transformer are often used at power transmission and transformation scene
On-the-spot test is carried out, test process is by four binding posts of transformer voltage ratio tester primary and secondary side with transformer respectively
Link together, then carry out the no-load voltage ratio test of transformer primary, vice-side winding.In order to ensure the accuracy of test, transformer becomes
To return to laboratory in use for some time than tester to be verified, to ensure its accuracy；Existing method of calibration is
Simulated in laboratory with manual variable rheostat instead of the transformer in scene, manually convert the gear of manual variable rheostat to change
Become access no-load voltage ratio, read transformer voltage ratio tester reading, by by the reading of the transformer voltage ratio tester of reading with
The gear reading of the manual variable rheostat of manual change is compared, and judges whether the accuracy of Transformer Winding no-load voltage ratio tester reaches
Regulation requires；Following defect be present in this method of inspection：It is that manual variable rheostat is manually converted in test process first
Gear changes the no-load voltage ratio of access, and the test for making no-load voltage ratio is in discrete state, it is impossible to proof of genuineness Transformer Winding no-load voltage ratio tester
True precision；Next to that the cumbersome error rate of knob-operated is high, phenomenon not in place is often rotated；Followed by do not adapt to
The requirement of intelligent development.
The content of the invention
The invention provides a kind of automatic precision pre-check device of Transformer Winding no-load voltage ratio tester and method of calibration, solves
Cumbersome existing for the device that existing pair of transformer voltage ratio tester is verified, error rate is high and no-load voltage ratio test verification
Discontinuous technical problem.
The present invention is that solve above technical problem by the following technical programs：
A kind of automatic precision pre-check device of Transformer Winding no-load voltage ratio tester, including Transformer Winding no-load voltage ratio tester and mouth word
Shape iron core, it is provided with the upper core of square shape iron core and verifies winding, under being provided with the lower core of square shape iron core
Verify winding, the shape and structure of upper verification winding be with the lower verification shape of winding and completely identical in structure, in upper verification
Upper leading screw support frame is provided with the outside of winding, is provided with upper leading screw on upper leading screw support frame, the left end of upper leading screw passes through upper
The output shaft of shaft coupling and upper stepper motor links together, and upper leading screw nut is movably set with upper leading screw, in upper leading screw
Slide plate fixed seat is connected with nut, slide plate is provided with upper slide plate fixed seat, upper slide plate is movably arranged on verification
On winding；Lower leading screw support frame is provided with the outside of lower verification winding, lower leading screw, lower silk are provided with lower leading screw support frame
The right-hand member of thick stick is linked together by the output shaft of lower coupler and lower stepper motor, and lower leading screw is movably set with lower leading screw
Nut, lower slide plate fixed seat is connected with lower leading screw nut, lower slide plate, lower slide plate activity are provided with upper slide plate fixed seat
It is arranged on lower verification winding；The upper verification top of winding, upper slide plate, the top of lower verification winding and lower slide plate respectively with transformation
Device winding no-load voltage ratio tester is electrically connected.
The left inside side of upper leading screw support frame is provided with left travel switch, is provided with the Right Inboard of upper leading screw support frame
Upper right travel switch, upper left travel switch and upper right travel switch are electrically connected with upper stepper motor respectively；In lower leading screw
The left inside side of support frame is provided with bottom left travel switch, and the Right Inboard of lower leading screw support frame is provided with bottom right travel switch, under
Left travel switch and bottom right travel switch are electrically connected with lower stepper motor respectively.
A kind of automatic precision pre-check method of Transformer Winding no-load voltage ratio tester, it is characterised in that following steps：
On the upper core of square shape iron core set on verify winding, on the lower core of square shape iron core set under verification around
Group, the shape and structure of upper verification winding be with the lower verification shape of winding and completely identical in structure, in upper verification winding
Outside sets upper leading screw support frame, sets upper leading screw on upper leading screw support frame, the left end of upper leading screw by upper coupling with it is upper
The output shaft of stepper motor links together, the activity setting upper leading screw nut in upper leading screw, on upper leading screw nut in connection
Slide plate fixed seat, sets slide plate in upper slide plate fixed seat, and upper slide plate is movably arranged on verification winding；It is lower verification around
The outside of group sets lower leading screw support frame, lower leading screw is set on lower leading screw support frame, the right-hand member of lower leading screw passes through lower coupler
Linked together with the output shaft of lower stepper motor, activity setting lower leading screw nut, connects on lower leading screw nut in lower leading screw
Lower slide plate fixed seat is connected to, slide plate under being set in upper slide plate fixed seat, lower slide plate is movably arranged on lower verification winding；Colonel
Top, upper slide plate, the top of lower verification winding and the lower slide plate for testing winding electrically connect with Transformer Winding no-load voltage ratio tester respectively
Together；
Upper slide plate is moved at the top of upper verification winding, lower slide plate is moved at the top of lower verification winding, starts to become
Than check test, the time of the operation of stepper motor and upper stepper motor under controlling, you can complete the setting to no-load voltage ratio；
By it is upper verification winding top, it is upper verification winding end, it is lower verification winding top, it is lower verification winding end, on
Slide plate and lower slide plate link together with an Industrial Control Computer, tested upper verification winding is formed upper measuring loop with industrial computer,
Lower verification winding is set to form lower measuring loop with calibration feedback device and industrial computer, industrial computer is measured and compared in measuring loop
Electric current and lower measuring loop electric current, two stepper motors are finely tuned with the ratio of this two electric current, until two current ratio etc.
Become the inverse ratio of ratio in setting, so as to complete the accurate verification of no-load voltage ratio.
The present invention realizes the automatic continuous precisely verification to Transformer Winding no-load voltage ratio tester, simple to operate, realizes and holds
Easily.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention.
Embodiment
The present invention is described in detail below in conjunction with the accompanying drawings：
A kind of automatic precision pre-check device of Transformer Winding no-load voltage ratio tester, including Transformer Winding no-load voltage ratio tester and mouth word
Shape iron core, verification winding 22 is provided with the upper core of square shape iron core, is provided with the lower core of square shape iron core
Lower verification winding 23, the shape and structure of upper verification winding 22 be with the lower verification shape of winding 23 and completely identical in structure,
The outside of upper verification winding 22 is provided with upper leading screw support frame 25, upper leading screw 15 is provided with upper leading screw support frame 25, on
The left end of leading screw 15 is linked together by the output shaft of upper coupling 17 and upper stepper motor 19, in upper leading screw 15 activity set
Upper leading screw nut 16 is equipped with, slide plate fixed seat 24 is connected with upper leading screw nut 16, is set in upper slide plate fixed seat 24
There is upper slide plate 18, upper slide plate 18 is movably arranged on verification winding 22；The outside of lower verification winding 23 is provided with lower leading screw
Support frame 3, is provided with lower leading screw 4 on lower leading screw support frame 3, and the right-hand member of lower leading screw 4 passes through lower coupler 9 and lower stepper motor
10 output shaft is linked together, and lower leading screw nut 5 is movably set with lower leading screw 4, under being connected with lower leading screw nut 5
Slide plate fixed seat 7, is provided with lower slide plate 8 in upper slide plate fixed seat 7, and lower slide plate 8 is movably arranged on lower verification winding 23；On
Verify the top 20 of winding 22, upper slide plate 18, the top 11 of lower verification winding 23 and lower slide plate 8 respectively with Transformer Winding no-load voltage ratio
Tester is electrically connected.
The left inside side of upper leading screw support frame 25 is provided with left travel switch 13, in the Right Inboard of upper leading screw support frame 25
Upper right travel switch 14 is provided with, upper left travel switch 13 and upper right travel switch 14 are connected electrically in upper stepper motor 19 respectively
Together；The left inside side of lower leading screw support frame 3 is provided with bottom left travel switch 1, is provided with the Right Inboard of lower leading screw support frame 3
Bottom right travel switch 2, bottom left travel switch 1 and bottom right travel switch 2 are electrically connected with lower stepper motor 10 respectively.Work as cunning
When piece is moved to the beginning or end of winding, triggering travel switch action, stepper motor is set to stop driving, anti-slip limiting plate slides.
A kind of automatic precision pre-check method of Transformer Winding no-load voltage ratio tester, it is characterised in that following steps：
On the upper core of square shape iron core set on verify winding 22, on the lower core of square shape iron core set under verification around
Group 23, the shape and structure of upper verification winding 22 be with the lower verification shape of winding 23 and completely identical in structure, in upper verification
The outside of winding 22 sets upper leading screw support frame 25, and upper leading screw 15, the left end of upper leading screw 15 are set on upper leading screw support frame 25
Linked together by the output shaft of upper coupling 17 and upper stepper motor 19, the activity setting upper leading screw nut in upper leading screw 15
16, the slide plate fixed seat 24 in connection on upper leading screw nut 16, slide plate 18, upper slide plate 18 are set in upper slide plate fixed seat 24
It is movably arranged on verification winding 22；Lower leading screw support frame 3 is set in the outside of lower verification winding 23, in lower leading screw support frame
Lower leading screw 4 is set on 3, the right-hand member of lower leading screw 4 is linked together by the output shaft of lower coupler 9 and lower stepper motor 10,
Activity sets lower leading screw nut 5 in lower leading screw 4, and lower slide plate fixed seat 7 is connected with lower leading screw nut 5, is fixed in upper slide plate
Lower slide plate 8 is set on seat 7, and lower slide plate 8 is movably arranged on lower verification winding 23；Top 20, the upper slide plate of upper verification winding 22
18th, the top 11 of lower verification winding 23 and lower slide plate 8 are electrically connected with Transformer Winding no-load voltage ratio tester respectively；
Upper slide plate 18 is moved at the top 20 of upper verification winding 22, lower slide plate 8 is moved to the top of lower verification winding 23
At 11, start no-load voltage ratio check test, control the time of the operation of lower stepper motor 10 and upper stepper motor 19, you can complete to becoming
The setting of ratio；
By it is upper verification winding 22 top 20, it is upper verification winding 22 end 21, it is lower verification winding 23 top 11, it is lower verification around
End 12, upper slide plate 18 and the lower slide plate 8 of group 23 link together with an Industrial Control Computer, make tested upper verification winding 22 and work
Mechanism is controlled into upper measuring loop, lower verification winding 23 is formed lower measuring loop, work with verification feedback device 26 and industrial computer 27
Control machine measured and compares the electric current in measuring loop and the electric current of lower measuring loop, and two steps are finely tuned with the ratio of this two electric current
Stepper motor, the inverse ratio for becoming ratio is set until two current ratio is equal to, so as to complete the accurate verification of no-load voltage ratio.Just because of
In checking procedure, always there is the appearance of fractional error, so being provided with calibration feedback device in systems, help is more accurately adjusted
No-load voltage ratio situation.When motor rotates regulation no-load voltage ratio, it can realize that accurate no-load voltage ratio controls by motor turnning circle, now calibration feedback
Device provides small voltage so that winding coil forms loop, is and then detection no-load voltage ratio regulation by the ratio between measuring loop electric current
It is no accurate, and result is fed back into controller regulation.
Because the rotating speed of stepper motor is：
Wherein：υ is motor speed, and unit is rev/min (rpm)；F is frequency, and unit is hertz (Hz)；N is subdivision multiple；θ
For intrinsic stepping angle, unit is degree；
The intrinsic stepping angle θ of stepper motor of the present invention is 1.8 °, and frequency f is 200Hz, is exactly per second turn 1 circle, and subdivision multiple n is set
1 is set to, motor speed υ is 60 revs/min, i.e. 1 revolution per second；Leading screw selects the leading screw of 200 millimeters of C0 levels, then lead error control
System is at 3.5 μm, and now from the leading screw that helical pitch is 1 millimeter, then feed screw nut is per second advances 1 millimeter, then the pace of slide plate
Also it is per second for 1 millimeter；Assuming that the resistivity of verification winding is ρ, a diameter of r of winding, a diameter of R of winding iron core are verified, then
Lower slide plate 8 is per second to be by the lower resistance for verifying winding 23：
Because lower verification winding 23 and upper verification winding 22 use same apparatus, then above slide plate 18 is per second passes through upper verification winding
22 resistance is R22Equal to R23, the ratio that need to such as select to set lower verification winding 23 and upper verification winding 22 now is n23：n22,
Then：
n22：n23=(T23R23)：(T22R22)；
Wherein T23, T23The respectively duration of runs of motor 10 and motor 19, due to R22=R23, then n23：n22=T23：T22, institute
The setting to no-load voltage ratio can be completed with the time run using controlled motor.
Claims (3)
1. a kind of automatic precision pre-check device of Transformer Winding no-load voltage ratio tester, including Transformer Winding no-load voltage ratio tester and mouth
Font iron core, it is provided with the upper core of square shape iron core and verifies winding（22）, set on the lower core of square shape iron core
It is equipped with lower verification winding（23）, upper verification winding（22）Shape and structure be and lower verification winding（23）Shape and structure it is complete
Exactly the same, it is characterised in that in upper verification winding（22）Outside be provided with upper leading screw support frame（25）, supported in upper leading screw
Frame（25）On be provided with upper leading screw（15）, upper leading screw（15）Left end pass through upper coupling（17）With upper stepper motor（19）It is defeated
Shaft links together, in upper leading screw（15）On be movably set with upper leading screw nut（16）, in upper leading screw nut（16）Upper connection
There is upper slide plate fixed seat（24）, in upper slide plate fixed seat（24）On be provided with slide plate（18）, upper slide plate（18）It is movably arranged on
Upper verification winding（22）On；In lower verification winding（23）Outside be provided with lower leading screw support frame（3）, in lower leading screw support frame
（3）On be provided with lower leading screw（4）, lower leading screw（4）Right-hand member pass through lower coupler（9）With lower stepper motor（10）Output shaft connect
It is connected together, in lower leading screw（4）On be movably set with lower leading screw nut（5）, in lower leading screw nut（5）On be connected with lower slide plate and consolidate
Reservation（7）, in upper slide plate fixed seat（7）On be provided with lower slide plate（8）, lower slide plate（8）It is movably arranged on lower verification winding（23）
On；Upper verification winding（22）Top（20）, upper slide plate（18）, lower verification winding（23）Top（11）With lower slide plate（8）Point
It is not electrically connected with Transformer Winding no-load voltage ratio tester.
2. a kind of automatic precision pre-check device of Transformer Winding no-load voltage ratio tester according to claim 1, its feature exist
In in upper leading screw support frame（25）Left inside side be provided with left travel switch（13）, in upper leading screw support frame（25）The right side in
Side is provided with upper right travel switch（14）, upper left travel switch（13）With upper right travel switch（14）Respectively with upper stepper motor
（19）It is electrically connected；In lower leading screw support frame（3）Left inside side be provided with bottom left travel switch（1）, supported in lower leading screw
Frame（3）Right Inboard be provided with bottom right travel switch（2）, bottom left travel switch（1）With bottom right travel switch（2）Respectively with lower step
Stepper motor（10）It is electrically connected.
3. a kind of automatic precision pre-check method of Transformer Winding no-load voltage ratio tester, it is characterised in that following steps：
Winding is verified on being set on the upper core of square shape iron core（22）, verified under being set on the lower core of square shape iron core
Winding（23）, upper verification winding（22）Shape and structure be and lower verification winding（23）Shape and completely identical in structure,
In upper verification winding（22）Outside set upper leading screw support frame（25）, in upper leading screw support frame（25）Upper setting upper leading screw
（15）, upper leading screw（15）Left end pass through upper coupling（17）With upper stepper motor（19）Output shaft link together, upper
Leading screw（15）Upper activity sets upper leading screw nut（16）, in upper leading screw nut（16）Slide plate fixed seat in upper connection（24）, upper
Slide plate fixed seat（24）Slide plate in upper setting（18）, upper slide plate（18）It is movably arranged on verification winding（22）On；In lower verification
Winding（23）Outside set lower leading screw support frame（3）, in lower leading screw support frame（3）Upper setting lower leading screw（4）, lower leading screw（4）
Right-hand member pass through lower coupler（9）With lower stepper motor（10）Output shaft link together, in lower leading screw（4）Upper activity is set
Lower leading screw nut（5）, in lower leading screw nut（5）On be connected with lower slide plate fixed seat（7）, in upper slide plate fixed seat（7）Upper setting
Lower slide plate（8）, lower slide plate（8）It is movably arranged on lower verification winding（23）On；Upper verification winding（22）Top（20）, upper slide plate
（18）, lower verification winding（23）Top（11）With lower slide plate（8）Respectively one is connected electrically in Transformer Winding no-load voltage ratio tester
Rise；
By upper slide plate（18）It is moved to verification winding（22）Top（20）Place, by lower slide plate（8）It is moved to lower verification winding
（23）Top（11）Place, start no-load voltage ratio check test, control lower stepper motor（10）With upper stepper motor（19）Operation
Time, you can complete the setting to no-load voltage ratio；
By upper verification winding（22）Top（20）, upper verification winding（22）End（21）, lower verification winding（23）Top
（11）, lower verification winding（23）End（12）, upper slide plate（18）With lower slide plate（8）Linked together with an Industrial Control Computer,
Make tested upper verification winding（22）Upper measuring loop is formed with industrial computer, makes lower verification winding（23）With verifying feedback device（26）
And industrial computer（27）Form lower measuring loop, industrial computer measures and compares the electric current in measuring loop and the electricity of lower measuring loop
Stream, two stepper motors are finely tuned with the ratio of this two electric current, until two current ratio is equal to the inverse ratio that setting becomes ratio, so as to
Complete the accurate verification of no-load voltage ratio.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710925066.5A CN107728092A (en) | 2017-10-02 | 2017-10-02 | The automatic precision pre-check device and method of calibration of Transformer Winding no-load voltage ratio tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710925066.5A CN107728092A (en) | 2017-10-02 | 2017-10-02 | The automatic precision pre-check device and method of calibration of Transformer Winding no-load voltage ratio tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107728092A true CN107728092A (en) | 2018-02-23 |
Family
ID=61208480
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710925066.5A Pending CN107728092A (en) | 2017-10-02 | 2017-10-02 | The automatic precision pre-check device and method of calibration of Transformer Winding no-load voltage ratio tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107728092A (en) |
Citations (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2119676C1 (en) * | 1996-07-08 | 1998-09-27 | Иван Алексеевич Нефедьев | Device for verification of measuring current transformers |
| TW502262B (en) * | 1999-05-25 | 2002-09-11 | Abb Ab | A variable transformer and a variable reactor |
| CN2657012Y (en) * | 2003-10-31 | 2004-11-17 | 荆门供电局 | Full automatic electrity power protective CT volt-ampere characteristics, conversion ratio, polartiy test instrument |
| CN1811474A (en) * | 2004-07-25 | 2006-08-02 | 天水长城电力仪器设备厂 | Transformer dynamic stability state parameter tester and diagnostic software |
| CN101082661A (en) * | 2007-06-28 | 2007-12-05 | 天津市百利电气有限公司 | Current mutual inductor for intelligent electrical apparatus release and control method thereof |
| CN201196680Y (en) * | 2008-03-24 | 2009-02-18 | 汪国强 | Photoelectric head fixing rack lifting mechanism |
| CN101566652A (en) * | 2008-04-25 | 2009-10-28 | 毕青春 | Comprehensive tester of current-voltage transformation ratio polarity |
| CN201804052U (en) * | 2010-01-22 | 2011-04-20 | 云南电力试验研究院(集团)有限公司 | Integrative testing device for low frequency and frequency conversion current transformer |
| CN201886089U (en) * | 2010-11-22 | 2011-06-29 | 河南省电力公司平顶山供电公司 | Fully automatic tester for variable ratio bridges |
| CN202018505U (en) * | 2011-03-02 | 2011-10-26 | 华北电力科学研究院有限责任公司 | Checking device for internal water-cooled generator insulation-testing instrument |
| CN102830385A (en) * | 2012-09-27 | 2012-12-19 | 秦皇岛开发区海纳电测仪器有限责任公司 | Converting device of current mutual inductor and control method of converting device |
| CN203101622U (en) * | 2013-01-25 | 2013-07-31 | 河北省电力公司电力科学研究院 | Testing system for 220 V output voltage multi-output voltage mutual inductor |
| CN103278790A (en) * | 2012-11-29 | 2013-09-04 | 杭州凯达电力建设有限公司 | Fast testing instrument of variable ratio and polarity of current transformer and testing method thereof |
| CN203399027U (en) * | 2013-07-26 | 2014-01-15 | 高海生 | Adjustable iron-core-valve soft starter |
| CN103809144A (en) * | 2014-02-27 | 2014-05-21 | 国家电网公司 | Transformation ratio tester verification system and detecting method thereof |
| CN203688793U (en) * | 2013-11-19 | 2014-07-02 | 国家电网公司 | Field calibration tester for electric energy meter |
| CN103967720A (en) * | 2014-04-08 | 2014-08-06 | 大唐国际发电股份有限公司张家口发电厂 | Automatic check device for twisted cable sensor of yaw system of wind turbine generator system |
| CN104330760A (en) * | 2014-11-10 | 2015-02-04 | 国家电网公司 | Precise high-voltage current mutual inductor and error testing system and method thereof |
| CN104916421A (en) * | 2015-05-18 | 2015-09-16 | 国网安徽省电力公司芜湖供电公司 | High precision multi-transformation ratio voltage transformer comparison device |
| CN104993488A (en) * | 2015-07-24 | 2015-10-21 | 国家电网公司 | Voltage regulating control device for on-load tap changer |
| CN205080251U (en) * | 2015-10-14 | 2016-03-09 | 大唐碧口水力发电厂 | Through -flow calibration system of current transformer secondary circuit |
| CN205508600U (en) * | 2016-03-30 | 2016-08-24 | 许昌学院 | But automation pressure regulating voltage stabilizing transformer is kept apart entirely to three -phase |
| CN206248816U (en) * | 2016-11-21 | 2017-06-13 | 国网山西省电力公司检修分公司 | A kind of current transformer measuring circuit |
| CN206292382U (en) * | 2016-12-02 | 2017-06-30 | 广东电网有限责任公司汕头供电局 | A kind of resistance meter calibrating installation |
| CN207396705U (en) * | 2017-10-02 | 2018-05-22 | 国网山西省电力公司电力科学研究院 | The automatic precision pre-check device of transformer winding no-load voltage ratio tester |
-
2017
- 2017-10-02 CN CN201710925066.5A patent/CN107728092A/en active Pending
Patent Citations (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2119676C1 (en) * | 1996-07-08 | 1998-09-27 | Иван Алексеевич Нефедьев | Device for verification of measuring current transformers |
| TW502262B (en) * | 1999-05-25 | 2002-09-11 | Abb Ab | A variable transformer and a variable reactor |
| CN2657012Y (en) * | 2003-10-31 | 2004-11-17 | 荆门供电局 | Full automatic electrity power protective CT volt-ampere characteristics, conversion ratio, polartiy test instrument |
| CN1811474A (en) * | 2004-07-25 | 2006-08-02 | 天水长城电力仪器设备厂 | Transformer dynamic stability state parameter tester and diagnostic software |
| CN101082661A (en) * | 2007-06-28 | 2007-12-05 | 天津市百利电气有限公司 | Current mutual inductor for intelligent electrical apparatus release and control method thereof |
| CN201196680Y (en) * | 2008-03-24 | 2009-02-18 | 汪国强 | Photoelectric head fixing rack lifting mechanism |
| CN101566652A (en) * | 2008-04-25 | 2009-10-28 | 毕青春 | Comprehensive tester of current-voltage transformation ratio polarity |
| CN201804052U (en) * | 2010-01-22 | 2011-04-20 | 云南电力试验研究院(集团)有限公司 | Integrative testing device for low frequency and frequency conversion current transformer |
| CN201886089U (en) * | 2010-11-22 | 2011-06-29 | 河南省电力公司平顶山供电公司 | Fully automatic tester for variable ratio bridges |
| CN202018505U (en) * | 2011-03-02 | 2011-10-26 | 华北电力科学研究院有限责任公司 | Checking device for internal water-cooled generator insulation-testing instrument |
| CN102830385A (en) * | 2012-09-27 | 2012-12-19 | 秦皇岛开发区海纳电测仪器有限责任公司 | Converting device of current mutual inductor and control method of converting device |
| CN103278790A (en) * | 2012-11-29 | 2013-09-04 | 杭州凯达电力建设有限公司 | Fast testing instrument of variable ratio and polarity of current transformer and testing method thereof |
| CN203101622U (en) * | 2013-01-25 | 2013-07-31 | 河北省电力公司电力科学研究院 | Testing system for 220 V output voltage multi-output voltage mutual inductor |
| CN203399027U (en) * | 2013-07-26 | 2014-01-15 | 高海生 | Adjustable iron-core-valve soft starter |
| CN203688793U (en) * | 2013-11-19 | 2014-07-02 | 国家电网公司 | Field calibration tester for electric energy meter |
| CN103809144A (en) * | 2014-02-27 | 2014-05-21 | 国家电网公司 | Transformation ratio tester verification system and detecting method thereof |
| CN103967720A (en) * | 2014-04-08 | 2014-08-06 | 大唐国际发电股份有限公司张家口发电厂 | Automatic check device for twisted cable sensor of yaw system of wind turbine generator system |
| CN104330760A (en) * | 2014-11-10 | 2015-02-04 | 国家电网公司 | Precise high-voltage current mutual inductor and error testing system and method thereof |
| CN104916421A (en) * | 2015-05-18 | 2015-09-16 | 国网安徽省电力公司芜湖供电公司 | High precision multi-transformation ratio voltage transformer comparison device |
| CN104993488A (en) * | 2015-07-24 | 2015-10-21 | 国家电网公司 | Voltage regulating control device for on-load tap changer |
| CN205080251U (en) * | 2015-10-14 | 2016-03-09 | 大唐碧口水力发电厂 | Through -flow calibration system of current transformer secondary circuit |
| CN205508600U (en) * | 2016-03-30 | 2016-08-24 | 许昌学院 | But automation pressure regulating voltage stabilizing transformer is kept apart entirely to three -phase |
| CN206248816U (en) * | 2016-11-21 | 2017-06-13 | 国网山西省电力公司检修分公司 | A kind of current transformer measuring circuit |
| CN206292382U (en) * | 2016-12-02 | 2017-06-30 | 广东电网有限责任公司汕头供电局 | A kind of resistance meter calibrating installation |
| CN207396705U (en) * | 2017-10-02 | 2018-05-22 | 国网山西省电力公司电力科学研究院 | The automatic precision pre-check device of transformer winding no-load voltage ratio tester |
Non-Patent Citations (1)
| Title |
|---|
| 国家质量监督检验检疫总局: "《中华人民共和国国家计量检定规程JJG970-2002变压比电桥》", 《中华人民共和国国家计量检定规程》, pages 1 - 20 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105403832B (en) | A kind of stepper motor comprehensive performance testing system | |
| CN108646181A (en) | A kind of braking motor load test system and its test method | |
| CN206311086U (en) | A kind of great-scale displacement sensor calibrating installation | |
| CN103364755A (en) | Full-automatic scanning testing device, full-automatic scanning testing system and full-automatic scanning testing method for electric energy meter power frequency magnetic field | |
| CN207396705U (en) | The automatic precision pre-check device of transformer winding no-load voltage ratio tester | |
| CN107086835A (en) | A kind of permagnetic synchronous motor rotation becomes initial zero position angle calibration system and calibration method | |
| CN106287126A (en) | Camera fixing device and there is the visual identity equipment of this camera fixing device | |
| CN107728092A (en) | The automatic precision pre-check device and method of calibration of Transformer Winding no-load voltage ratio tester | |
| CN106093776A (en) | A kind of simulated machine load characteristic low voltage test system based on converter | |
| CN206894546U (en) | A kind of permagnetic synchronous motor rotation becomes initial zero position angle calibration system | |
| CN102733961A (en) | Method, device and system for calibrating gears and rotating speed of engineering machinery and engine | |
| CN104914395B (en) | A kind of detection quality verification method for single-phase intelligent electric energy meter automatic calibration system | |
| CN104458434B (en) | Service life test device of car connecting wire | |
| EP0427978A2 (en) | Tire cord thermal analysis testing device and method | |
| CN202853987U (en) | Wire material bending tester | |
| CN208607335U (en) | A kind of braking motor load test system | |
| CN109900424A (en) | A kind of method of lever force standard machines and its test space adjust automatically | |
| CN108828491B (en) | Be applied to electric power instrument's tear wiring device open | |
| CN101082661A (en) | Current mutual inductor for intelligent electrical apparatus release and control method thereof | |
| CN117007422A (en) | Intelligent detection device and method for cable performance | |
| CN204008747U (en) | A kind of automatic variable-resistance device | |
| CN102809447B (en) | Method and device for detecting assembling pressure of storage battery accumulator plate group | |
| CN206556879U (en) | A kind of vehicle accelerator pedal opening-limiting device and experimental provision | |
| CN108535581A (en) | A kind of integrated experiment device of residual current type detector for electric fire protection | |
| CN105253621A (en) | Testing device for sorting machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180223 |
|
| WD01 | Invention patent application deemed withdrawn after publication |