CN201876502U - Small inductance testing device - Google Patents
Small inductance testing device Download PDFInfo
- Publication number
- CN201876502U CN201876502U CN2010202986826U CN201020298682U CN201876502U CN 201876502 U CN201876502 U CN 201876502U CN 2010202986826 U CN2010202986826 U CN 2010202986826U CN 201020298682 U CN201020298682 U CN 201020298682U CN 201876502 U CN201876502 U CN 201876502U
- Authority
- CN
- China
- Prior art keywords
- inductance
- test specimen
- terminal
- connecting line
- test object
- 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.)
- Expired - Lifetime
Links
Images
Landscapes
- Measurement Of Resistance Or Impedance (AREA)
Abstract
The utility model relates to a small inductance testing device comprising a first test object, a connecting wire between two terminals, a second test object and an inductance measuring instrument, wherein the first test object, the connecting wire between the two terminals, the second test object and the inductance measuring instrument are sequentially connected, the first test object and the second test object are in head-to-head connection in series and belong to capacitor products with same internal inductances and same processes, and the internal inductance errors are in the range of 50%. The small inductance testing device has the purpose of solving the technical problem that in the prior art, as the inductance of a connecting wire between the instrument and the capacitor can be compared with the internal inductance of the measured capacitor in the small inductance measuring process, a measurement result has a larger error; and as the two test objects are placed in a terminal-to-terminal mode, the small inductance testing device can carry out higher-precision measurement without using the connecting wire or only using a very short connecting wire in the measuring process.
Description
Technical field
The utility model belongs to the Electrical Measurement Technology field, specially refers to the small inductor proving installation, is mainly used in the measurement of the internal inductance value of capacitor such as high-voltage pulse capacitor etc.
Background technology
High-voltage capacitor is a kind ofly mainly to be made into element by pole plate and contrasted between solid dielectric thereof by the form of reeling, and then element is combined into center by series-parallel form and is loaded in the case shell, then the High-Voltage Electrical Appliances of the two poles of the earth of capacitor being drawn by lead-in wire.Its inner inductance is mainly from the inductance of pole plate, brace and the extension line etc. of capacitor.Because there is certain electrical distance in two interpolars of capacitor, to satisfy capacitor the electric puncture of two interpolars can not take place in operational process, therefore use traditional measuring method the two poles of the earth to be guided on the surveying instrument with lead-in wire.Because measured inductance value is very little, be the nH order of magnitude, be the 10-9H order of magnitude, the inductance of this order of magnitude is less than or equal to the inductance of instrument to the line of capacitor two interpolars generally speaking, therefore can very big influence be arranged to measurement result under the situation that the two inductance numerical value can be compared.
The someone adopts the method for multiply extension line connect in parallel capacitor the two poles of the earth and surveying instrument to reduce the device of error in this case, though this mode can reduce measuring error, but this device not only uses lead-in wire more, and still having to a certain degree error, error range has surpassed 100%.
Summary of the invention
The purpose of this utility model is to overcome in the existing technology inductance of the connecting line between the instrument and capacitor in carrying out the small inductor measuring process and measured capacitor internal inductance numerical value can be compared, thereby make measurement result have technical barrier than mistake, two test specimens are owing to be that " terminal is to terminal " placed, therefore in measuring process, use hardly and rely on connecting line, perhaps only adopt very short connecting line can carry out the higher measurement of precision.
The purpose of this utility model is achieved through the following technical solutions:
Small inductor proving installation described in the utility model, comprise connecting line between first test specimen, two-terminal, second test specimen, inductance measurement instrument, wherein connecting line, second test specimen, inductance measurement instrument connect successively between first test specimen, two-terminal, first test specimen and second test specimen head to head are connected in series, the capacitor product that belongs to the identical and same process of internal inductance, its internal electrical induction error is in 50% scope.
Connecting line is the stranded conductor parallel connection between described two-terminal.The stranded conductor parallel connection refers to six strands or six strands with the upper conductor parallel connection.
The connecting line length that connecting line is used to measure between described two-terminal is at 5-10mm.
Described inductance measurement instrument can be measured the small inductor of the nH order of magnitude.
Small inductor proving installation described in the utility model, can also be to comprise the 3rd test specimen, the above test specimen of the 4th test specimen, connect by connecting line between two-terminal between each test product, and connect with the inductance measurement instrument, the capacitor product that belongs to the identical and same process of internal inductance, its internal electrical induction equate or error range in 50%.
The utility model compared with prior art has following advantage:
The error of 1, measuring accuracy height, the error that has reduced the measurement result that the inductance owing to connecting line causes the to greatest extent the highest several times before thus is reduced in present 25%;
2, the utility model adopts the modes of emplacement of two capacitors " terminal is to terminal ", only uses very short connecting line, directly adopts surveying instrument to get final product the internal inductance of Measurement of capacitor, has solved an above-mentioned difficult problem well.
Description of drawings
Fig. 1 is metering system figure of the present utility model.
The connecting line 3-second test specimen 4-inductance measurement instrument between the 1-first test specimen 2-two-terminal
Embodiment:
Below in conjunction with accompanying drawing the present invention is described in further detail:
Embodiment 1.As seen from Figure 1, the utility model is a kind of with first test specimen 1, connecting line 2 between two-terminal, second test specimen 3, inductance measurement instrument 4 is placed successively, is connected by illustrated mode, and in addition certain betwixt annex (connecting the annex that uses as instrument) and carry out a kind of device of capacitor electrode sensed quantity.
Embodiment 2.Except connecting line, second test specimen, inductance measurement instrument between first test specimen, two-terminal connect successively, also have the 3rd test specimen, the above test specimen of the 4th test specimen, connect by connecting line between two-terminal between each test product, and connect with the inductance measurement instrument, wherein each test specimen head to head is connected in series, the capacitor product that belongs to the identical and same process of internal inductance, its internal electrical induction equate or error range in 50%.After measurement finishes, measurement result can be obtained the measurement result of separate unit test specimen divided by test product quantity.
Claims (5)
1. small inductor proving installation, it is characterized in that comprising connecting line between first test specimen, two-terminal, second test specimen, inductance measurement instrument, wherein connecting line, second test specimen, inductance measurement instrument connect successively between first test specimen, two-terminal, and first test specimen and second test specimen head to head are connected in series.
2. small inductor proving installation according to claim 1 is characterized in that connecting line is the stranded conductor parallel connection between described two-terminal.
3. small inductor proving installation according to claim 2 is characterized in that between described two-terminal that connecting line is that six strands or six strands are with the upper conductor parallel connection.
4. small inductor proving installation according to claim 1 is characterized in that connecting line is used to measure between described two-terminal wire length is at 5-10mm.
5. small inductor proving installation according to claim 1, it is characterized in that to comprise the 3rd test specimen, the above test specimen of the 4th test specimen, connected by connecting line between two-terminal between each test product, and connect with the inductance measurement instrument, wherein each test specimen head to head is connected in series.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202986826U CN201876502U (en) | 2010-08-20 | 2010-08-20 | Small inductance testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202986826U CN201876502U (en) | 2010-08-20 | 2010-08-20 | Small inductance testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201876502U true CN201876502U (en) | 2011-06-22 |
Family
ID=44164418
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202986826U Expired - Lifetime CN201876502U (en) | 2010-08-20 | 2010-08-20 | Small inductance testing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201876502U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114200225A (en) * | 2021-11-12 | 2022-03-18 | 辽宁芯峻电气有限公司 | Cabinet type dry hollow current-limiting reactor test method |
-
2010
- 2010-08-20 CN CN2010202986826U patent/CN201876502U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114200225A (en) * | 2021-11-12 | 2022-03-18 | 辽宁芯峻电气有限公司 | Cabinet type dry hollow current-limiting reactor test method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105527501B (en) | A kind of micro capacitance method | |
| CN103018575B (en) | A kind of method utilizing large power, electrically sensing electricity testing device to measure high-power inductance | |
| CN101419253A (en) | Uhv transmission line positive sequence and zero sequence parameter measurement method and system | |
| CN106771505B (en) | Single-phase overhead transmission line of electricity phase voltage method for self-calibrating based on series capacitance | |
| CN204214962U (en) | A kind of charger common-mode noise test circuit and proving installation | |
| CN104297532B (en) | Voltage transformer calibrating termination | |
| CN105738826B (en) | Ice storing time system and method | |
| CN101520471B (en) | Novel DC pulsed attenuator | |
| CN105629049A (en) | Gauss quadrature algorithm-based optical voltage transformer | |
| CN201876502U (en) | Small inductance testing device | |
| CN105044432A (en) | Method for measuring leaking current of current transformer | |
| CN201382969Y (en) | Capacitor for reducing line induction voltage during test of insulation resistance for transmission line | |
| CN106443549B (en) | A kind of analog AC resistance device for calibration battery internal resistance test device | |
| CN208156079U (en) | Ring network cabinet electronic type gage probe | |
| CN203595743U (en) | Current acquisition sensor used for lightning stoke tower | |
| CN107064625A (en) | A kind of three-phase four-wire high voltage energy table and measuring method | |
| CN103151655A (en) | Extension socket with power parameter monitoring function | |
| CN203607236U (en) | Ultrathin large current mutual inductor | |
| CN203465368U (en) | Apparatus for testing through-flow situation of high-temperature superconductor tape under bending stress | |
| CN207472945U (en) | A kind of all insulation voltage electronic formula sensor | |
| CN104485226A (en) | Polar plate distance measurable capacitor | |
| CN202393455U (en) | Multielectrode-based capacitance level meter | |
| CN106526324B (en) | Impedance characteristic testing device of capacitive equipment | |
| CN104502678A (en) | Method for measuring voltage ratio of power transformer | |
| CN109141688A (en) | Bridge stress measurement system and its test method based on transformer model |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: QINGDAO HENGSHUN ZHONGSHENG GROUP CO., LTD. Free format text: FORMER NAME: QINGDAO EVERCONTAINING ELECTRIC CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 266108 Airport Industrial Park, Liuting street, Chengyang District, Shandong, Qingdao Patentee after: QINGDAO HENGSHUN ZHONGSHENG GROUP CO,. LTD. Address before: 266108 west section, No. three, Gate Industrial Park, Shuang Yuan Road, Chengyang District, Shandong, Qingdao Patentee before: Evercontaining Electric Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110622 |