CN203433979U - Electric transformer capable of realizing error adjustment - Google Patents
Electric transformer capable of realizing error adjustment Download PDFInfo
- Publication number
- CN203433979U CN203433979U CN201320565893.5U CN201320565893U CN203433979U CN 203433979 U CN203433979 U CN 203433979U CN 201320565893 U CN201320565893 U CN 201320565893U CN 203433979 U CN203433979 U CN 203433979U
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- error
- error adjustment
- secondary coil
- transformer
- mutual inductor
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Abstract
The utility model relates to an electric transformer capable of realizing error adjustment. The electric transformer comprises an epoxy resin pouring body, a primary conductor and a secondary coil, and is characterized in that a mounting groove is formed in the epoxy resin pouring body; connecting components are arranged in the mounting groove and connected with an output wire of the secondary coil; error adjustment circuit boards are arranged in the mounting groove; an error adjustment circuit is connected with the output wire of the secondary coil via the connecting components to form an error adjustment electrical path. The electronic transformer has the characteristics as follows: with the error adjustment circuit arranged on the transformer and connected with a secondary winding, the adjustment of measurement precise of the transformer is achieved, the measurement accuracy of the transformer is ensured, processing and manufacture are facilitated, production qualification rate is greatly improved, loss is lowered, energy is saved, and economic benefits are remarkably increased.
Description
Technical field
This practical a kind of electronic device, particularly a kind of electronic mutual inductor that carries out error adjustment of newly relating to.
Background technology
Along with future development and electronic technology and the computer technology application in electric power system and distribution automation system of power system device to miniaturization, intellectuality, networking, electronic mutual inductor is more and more extensive in the application in this field.At present, in mesolow poured with epoxy resin electronic mutual inductor manufacturing process, the problem existing is: the air core coil principle design that electronic current mutual inductor adopts, be subject to degree of tightness and the density of its secondary coil coiling, the factor impacts such as the relative position of Primary Conductor and secondary coil, the product of same batch all can not be identical, causes the secondary output signal size of every product all different; Adopt low-power ironcore choke principle design, the elasticity of wrapping up due to iron core buffering can not reach in full accord, the stress producing in Curing Process of Epoxy can make degradation unshakable in one's determination, and the error before and after product cast is that ratio difference and phase difference can have greatly changed; Electronic type voltage transformer adopts electric resistance partial pressure principle design, and when the installation site of product device body shielding new cover is different, the phase error of its output signal will change to some extent.Be subject to the impact of above-mentioned various factors, the be above standard error limit of regulation of the accuracy class that easily occurs instrument transformer does not have again the measure that can remedy after epoxy casting moulding, causes product rejection, causes certain economic loss.
Summary of the invention
This practical new object is to provide a kind of electronic mutual inductor that carries out error adjustment, by the output of products error to after moulding by casting, adjusts, and Product Precision grade can meet the demands, and improves conforming product rate, and output error is adjusted simple and convenient.
This practical new object is achieved in that a kind of electronic mutual inductor that carries out error adjustment, comprise epoxy resin poured body, Primary Conductor, secondary coil, it is characterized in that, in epoxy resin poured body, be provided with one groove is installed, in groove, be provided with link, be connected with secondary coil output line, step-up error Circuit tuning plate in groove is installed, error Circuit tuning is connected with secondary coil output line by link, forms error and adjusts electric pathway.
Described error Circuit tuning plate is double face copper, the installing hole two sides of double face copper has pad, bolt is connected with the link in groove is installed through installing hole, and error Circuit tuning forms good electric pathway by bolt, installing hole and link.
Described installation groove is arranged on the bottom of electronic mutual inductor epoxy resin poured body.
Described link is the nut of two setting-ins.
This is practical is newly a reserved installation groove in electronic mutual inductor epoxy resin poured body, installation groove is preferably disposed on the bottom of epoxy resin poured body, also can be located at other position, the link that setting-in in groove is installed is nut, for instrument transformer secondary coil is formed to good being electrically connected to error Circuit tuning, and be convenient to install.If the error of the electronic mutual inductor of moulding by casting exceeds the error limit of standard code, by changing the parameter of Resistor-Capacitor Unit on error Circuit tuning plate, make the error of electronic mutual inductor reach the error limit of standard code.Error Circuit tuning plate can adopt epoxy resin encapsulated in groove.
This practical new feature is: by the error Circuit tuning being connected with secondary coil is set on instrument transformer, realized the adjustment to instrument transformer output error, improved conforming product rate, guaranteed the accuracy that instrument transformer is measured; Reduced product in manufacture process to producing the technological requirement aspect error, be convenient to processing and manufacturing; By error Circuit tuning, instrument transformer is exported and adjusted, can meet the instructions for use of different load; The electric pathway connecting and composing between parts is reliable and stable, has good electric conductivity; The raising of instrument transformer rate of finished products, saves material and the energy, and economic benefit obviously increases.
accompanying drawing explanation
Fig. 1 is the structural representation of the utility model electronic current mutual inductor;
Fig. 2 is the utility model electronic current mutual inductor error Circuit tuning figure;
Fig. 3 is the structural representation of the utility model electronic type voltage transformer;
Fig. 4 is the utility model electronic type voltage transformer error Circuit tuning figure.
Embodiment
Below in conjunction with accompanying drawing, to originally practical, be newly described in further detail:
As shown in Figure 1 and Figure 2, the electronic mutual inductor that can carry out error adjustment is current transformer, and mainly by epoxy resin poured body 1, Primary Conductor 2, secondary coil 3 form, and the overall structure of instrument transformer is same as the prior art, repeats no more.When instrument transformer is poured into a mould, in epoxy resin poured body bottom, groove 4 is installed and is positioned at two links that groove is installed for reserved one, link is two nuts 5 that are inlaid on pour mass, the output line 6 of secondary coil is connected on nut, then draws and be connected on instrument transformer secondary singal lead-out terminal 7 from nut.Error Circuit tuning plate 8 adopts the double face copper conducting electricity very well, on it, be welded with elements such as forming the adjustable resistance R of error Circuit tuning and adjustable condenser C, in double face copper, be provided with two installing holes 9, on each installing hole, be welded with to the pad on circuit board two sides, be integral with the copper that covers on circuit board, to guarantee that error Circuit tuning is reliably connected with secondary coil output line.If need to instrument transformer output error be adjusted, error Circuit tuning plate is placed in to instrument transformer to be installed in groove, bolt is connected with embedded nut through the installing hole on circuit board, and error Circuit tuning plate is fixed, and completes being electrically connected to of error Circuit tuning and secondary coil output line simultaneously.After error adjustment completes, with epoxy resin, regulating error circuit board is potted in groove.
As shown in Figure 3, the electronic mutual inductor of the carried out error adjustment that embodiment 2 provides is voltage transformer, and its overall structure is same as the prior art, groove structure is installed identical with embodiment 1, repeats no more.Error Circuit tuning is very voltage transformer to be designed, and sees Fig. 4.
Claims (4)
1. the electronic mutual inductor that can carry out error adjustment, comprise epoxy resin poured body, Primary Conductor, secondary coil, it is characterized in that, in epoxy resin poured body, be provided with one groove is installed, in groove, be provided with link, be connected with secondary coil output line, step-up error Circuit tuning plate in groove is installed, error Circuit tuning is connected with secondary coil output line by link, forms error and adjusts electric pathway.
2. the electronic mutual inductor that carries out error adjustment according to claim 1, it is characterized in that, described error Circuit tuning plate is double face copper, the installing hole two sides of double face copper has pad, bolt is connected with the link in groove is installed through installing hole, and error Circuit tuning forms electric pathway by bolt, installing hole and link.
3. the electronic mutual inductor that carries out error adjustment according to claim 1, is characterized in that, described installation groove is arranged on the bottom of electronic mutual inductor epoxy resin poured body.
4. the electronic mutual inductor that carries out error adjustment according to claim 1, is characterized in that, described link is the nut of two setting-ins.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320565893.5U CN203433979U (en) | 2013-09-13 | 2013-09-13 | Electric transformer capable of realizing error adjustment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320565893.5U CN203433979U (en) | 2013-09-13 | 2013-09-13 | Electric transformer capable of realizing error adjustment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203433979U true CN203433979U (en) | 2014-02-12 |
Family
ID=50063004
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320565893.5U Expired - Fee Related CN203433979U (en) | 2013-09-13 | 2013-09-13 | Electric transformer capable of realizing error adjustment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203433979U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103474220A (en) * | 2013-09-13 | 2013-12-25 | 大连第一互感器有限责任公司 | Electronic transformer allowing error adjustment |
| CN106941040A (en) * | 2017-01-17 | 2017-07-11 | 上海大互电力电器有限公司 | Current transformer with starter blocking function |
-
2013
- 2013-09-13 CN CN201320565893.5U patent/CN203433979U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103474220A (en) * | 2013-09-13 | 2013-12-25 | 大连第一互感器有限责任公司 | Electronic transformer allowing error adjustment |
| CN106941040A (en) * | 2017-01-17 | 2017-07-11 | 上海大互电力电器有限公司 | Current transformer with starter blocking function |
| CN106941040B (en) * | 2017-01-17 | 2018-04-17 | 上海大一互电力电器有限公司 | Current transformer with starter blocking function |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140212 Termination date: 20190913 |