CN101697314A - Current transformer - Google Patents
Current transformer Download PDFInfo
- Publication number
- CN101697314A CN101697314A CN200910013574A CN200910013574A CN101697314A CN 101697314 A CN101697314 A CN 101697314A CN 200910013574 A CN200910013574 A CN 200910013574A CN 200910013574 A CN200910013574 A CN 200910013574A CN 101697314 A CN101697314 A CN 101697314A
- Authority
- CN
- China
- Prior art keywords
- secondary coil
- windings
- current transformer
- epoxy resin
- iron core
- 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 claims abstract description 38
- 239000003822 epoxy resin Substances 0.000 claims abstract description 14
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 14
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 12
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 abstract description 2
- 239000004593 Epoxy Substances 0.000 abstract 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 abstract 1
- 238000009413 insulation Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
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- Transformers For Measuring Instruments (AREA)
Abstract
The invention discloses a current transformer, which comprises a primary coil, a secondary coil, an iron core and a shell. Three windings of the primary coil and the secondary coil are wound on a primary skeleton and a secondary skeleton respectively, and are mounted on the iron core corresponding to a lining layer and an outer layer respectively; a lead wire of the primary coil is connected with two primary coil wiring terminals respectively; six lead wires of the three windings of the secondary coil are connected corresponding to six secondary coil wiring terminals mounted on a pedestal of the shell respectively; the three windings of the primary coil and the secondary coil and the iron core are poured into an integrated structure through epoxy resin. The epoxy resin poured body is the shell of the current transformer and is fixed on a soleplate through bolts. Because the primary coil and the secondary coil are poured and isolated by the epoxy rein, the current transformer is good in insulating property and the designed poured body is attractive in appearance. In addition, the current transformer also has the advantages of long surface creep age distance, great secondary output capacity, good dynamic thermal stability and the like.
Description
Technical field
The invention belongs to a kind of instrument transformer, specifically relate to a kind of big capacity current transformer.
Background technology
Electric current is connected in the power circuit with a winding of instrument transformer, and the secondary winding external circuit of current transformer is connected to measuring instrument, instrument or relaying protection or automatic control equipment.At present commercially available current transformer exists that the surface creepage distance is less, the secondary output current capacity is less, and is moving, thermally-stabilised parameter is lower, can not satisfy some specific environments and use.
Summary of the invention
The purpose of this invention is to provide that a kind of good insulation preformance, surface creepage distance is big, the secondary output current strengthens the current transformer moving, that thermal stability is good easily.
The technical scheme that adopts is:
A kind of current transformer comprises primary winding, secondary coil, iron core and housing.
Three windings of primary winding, secondary coil are wrapped in respectively on skeleton and the secondary skeleton; Three windings of primary winding, secondary coil correspond respectively to nexine and skin, are installed on the iron core.The lead-in wire of primary winding is connected with two primary winding binding posts respectively; Six lead-in wires of three windings of secondary coil respectively be installed in the housing pedestal on the corresponding connection of six secondary coil binding posts.
Three windings of primary winding, secondary coil and iron core are by poured with epoxy resin structure in aggregates.This epoxy resin poured body is the current transformer housing, and by being bolted on the base plate.
The present invention is owing to isolate good insulation preformance, the pour mass good looking appearance of design with epoxy resin with the cast of first and second coil.Advantages such as in addition, it is big that the present invention also has the surface creepage distance, and the secondary output capacity is big and moving, thermal stability is good.
Description of drawings
Fig. 1 is the structural representation of an embodiment of the present invention.
Fig. 2 is that cutaway view is looked on the left side of Fig. 1.
Fig. 3 is a schematic appearance of the present invention.
Embodiment
A kind of current transformer comprises three windings 2, iron core 3 and the epoxy resin poured body 4 of primary winding 1, secondary coil.
Three windings 2 of primary winding 1 and secondary coil are wrapped in respectively on skeleton and the secondary internal frame; Be respectively arranged with two primary winding binding posts 5 in the upper end of primary winding 1.Two lead-in wires 6 of primary winding 1 are connected with two primary winding binding posts 5 respectively.Three windings 2 of primary winding 1 and secondary coil correspond respectively to nexine and skin is installed on the iron core 3.Three windings 2 of primary winding 1, secondary coil and iron core 3 are laid good back with poured with epoxy resin structure in aggregates by desired location, wherein epoxy resin poured body 4 is a shell body, terminal block 8 is arranged at this shell body bottom, is equiped with six secondary coil binding posts 9 on the terminal block 8.Six of three windings 2 of secondary coil lead-in wires 10, respectively with terminal block 8 on six corresponding secondary coil binding posts 9 connect, epoxy resin poured body 4 is by being bolted on the base plate 7.
Claims (1)
1. current transformer comprises it is characterized in that three windings (2) and the iron core (3) of primary winding (1), secondary coil:
Three windings (2) of primary winding (1) and secondary coil correspond respectively to nexine and skin is installed on the iron core (3); Three windings (2) of primary winding (1), secondary coil and iron core (3) are laid good back poured with epoxy resin structure in aggregates by desired location, and wherein epoxy resin poured body (4) is a shell body; Epoxy resin poured body (4) has two primary winding binding posts (5) on the upper surface, and two lead-in wires (6) of primary winding (1) are connected with two primary winding binding posts (5) respectively; Be provided with terminal block (8) in the bottom of epoxy resin poured body (4), be provided with six secondary coil binding posts (9) on terminal block (8), six lead-in wires (10) of three windings (2) of secondary coil are connected with six secondary coil binding posts (9) respectively; Epoxy resin poured body (4) is by being bolted on the base plate (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910013574A CN101697314A (en) | 2009-09-01 | 2009-09-01 | Current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910013574A CN101697314A (en) | 2009-09-01 | 2009-09-01 | Current transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101697314A true CN101697314A (en) | 2010-04-21 |
Family
ID=42142413
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910013574A Pending CN101697314A (en) | 2009-09-01 | 2009-09-01 | Current transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101697314A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102751080A (en) * | 2012-06-01 | 2012-10-24 | 介国安 | Universal current transformer for protector |
| CN104916423A (en) * | 2015-06-05 | 2015-09-16 | 重庆华虹仪表有限公司 | Secondary coil casting positioning structure for current transformer |
| CN107978424A (en) * | 2017-12-05 | 2018-05-01 | 大连第二互感器集团有限公司 | One kind takes electric current transformer |
| CN108962574A (en) * | 2018-06-04 | 2018-12-07 | 湖北大二互科技股份有限公司 | Modularization combined transformers for metering |
| CN109166713A (en) * | 2018-07-23 | 2019-01-08 | 南京正方电气有限公司 | Split type current transformer |
| CN111430140A (en) * | 2020-04-29 | 2020-07-17 | 河北申科电力股份有限公司 | Wide-temperature miniature combined current transformer |
-
2009
- 2009-09-01 CN CN200910013574A patent/CN101697314A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102751080A (en) * | 2012-06-01 | 2012-10-24 | 介国安 | Universal current transformer for protector |
| CN104916423A (en) * | 2015-06-05 | 2015-09-16 | 重庆华虹仪表有限公司 | Secondary coil casting positioning structure for current transformer |
| CN107978424A (en) * | 2017-12-05 | 2018-05-01 | 大连第二互感器集团有限公司 | One kind takes electric current transformer |
| CN108962574A (en) * | 2018-06-04 | 2018-12-07 | 湖北大二互科技股份有限公司 | Modularization combined transformers for metering |
| CN108962574B (en) * | 2018-06-04 | 2023-10-03 | 湖北大二互科技股份有限公司 | Modular combined transformer for metering |
| CN109166713A (en) * | 2018-07-23 | 2019-01-08 | 南京正方电气有限公司 | Split type current transformer |
| CN111430140A (en) * | 2020-04-29 | 2020-07-17 | 河北申科电力股份有限公司 | Wide-temperature miniature combined current transformer |
| CN111430140B (en) * | 2020-04-29 | 2021-05-11 | 河北申科电力股份有限公司 | Wide-temperature miniature combined current transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20100421 |