CN203562291U - Totally-closed current transformer - Google Patents
Totally-closed current transformer Download PDFInfo
- Publication number
- CN203562291U CN203562291U CN201320569399.6U CN201320569399U CN203562291U CN 203562291 U CN203562291 U CN 203562291U CN 201320569399 U CN201320569399 U CN 201320569399U CN 203562291 U CN203562291 U CN 203562291U
- Authority
- CN
- China
- Prior art keywords
- secondary coil
- wound
- epoxy resin
- current transformer
- windings
- 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 - Fee Related
Links
- 238000004804 winding Methods 0.000 claims abstract description 42
- 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
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910052802 copper Inorganic materials 0.000 claims abstract description 5
- 239000010949 copper Substances 0.000 claims abstract description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 9
- 229910052710 silicon Inorganic materials 0.000 claims description 9
- 239000010703 silicon Substances 0.000 claims description 9
- 210000003298 dental enamel Anatomy 0.000 claims description 3
- 230000000712 assembly Effects 0.000 abstract 4
- 238000000429 assembly Methods 0.000 abstract 4
- 229910000976 Electrical steel Inorganic materials 0.000 abstract 2
- 241001124569 Lycaenidae Species 0.000 abstract 1
- 229910000831 Steel Inorganic materials 0.000 abstract 1
- 235000014987 copper Nutrition 0.000 abstract 1
- 229910021419 crystalline silicon Inorganic materials 0.000 abstract 1
- 239000010959 steel Substances 0.000 abstract 1
- 238000009413 insulation Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- Transformers For Measuring Instruments (AREA)
Abstract
A totally-closed current transformer is composed of a primary coil, a secondary coil, iron cores and a housing, wherein the primary coil and three winding assemblies of the secondary coil are wound on iron cores corresponding to an inner layer and an outer layer, the primary coil is formed by flat coppers being wound on a silicon steel sheet iron core, one of the three winding assemblies of the secondary coil is formed by round enamelled copper wires being parallelly wound on a measuring level ultra crystalline silicon steel iron core while the other two winding assemblies each formed by round copper wires being wound on two protecting level silicon steel iron cores respectively, two leading wires of the primary coil are correspondingly connected with two primary coil wiring terminals, six leading wires of the three winding assemblies of the secondary coil are correspondingly connected with six secondary coil wiring terminals, and the housing is made from the epoxy resin and is cast into an integral structure. The totally-closed current transformer has the advantages of being excellent in insulating property, large in creep distance and secondary output capacity, excellent in dynamic and heat stability, low in cost, and wide in use.
Description
Technical field
The utility model belongs to a kind of instrument transformer in power transformation field, particularly a kind of Full-closed current transformer.
Background technology
A winding of current transformer is connected in power circuit, 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 surface creepage distance is less, secondary output current capacity is less, moving, thermally-stabilised parameter is lower, can not meet some specific environments and use.
Summary of the invention
The purpose of this utility model is to provide a kind of good insulation preformance, surface creepage easily strengthens apart from large, secondary output current, the Full-closed current transformer moving, thermal stability is good.
The utility model is realized by following mode:
A kind of Full-closed current transformer, three windings, iron core and epoxy resin poured body comprising primary winding, secondary coil, primary winding is wound on silicon sheet core with flat copper band, three one of them windings of winding of secondary coil by circle enamel covered wire parallel winded on metering level ultracrystallite silicon sheet core, two other winding is wound on respectively on two protected level silicon sheet cores with circular copper wire; Two lead-in wires of primary winding respectively with two corresponding connections of primary winding binding post; On terminal block, be provided with six secondary coil binding posts, six lead-in wires of three windings of secondary coil respectively with six corresponding connections of secondary coil binding post; Three windings of primary winding, secondary coil become epoxy resin poured body with iron core by poured with epoxy resin, and epoxy resin poured body is bolted on base plate.
The utility model forms primary winding, secondary coil, iron core cast isolation with epoxy resin whole, good insulation preformance, the pour mass good looking appearance of design; Also there is surface creepage distance large, the advantage such as secondary output capacity is large and moving, thermal stability is good.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of current transformer;
Fig. 2 is that cutaway view is looked on a left side of Fig. 1;
Fig. 3 is a kind of schematic appearance of current transformer.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail:
A kind of Full-closed current transformer of the utility model, comprises three winding 2a, 2b, 2c iron core 3,3a, 3b, 3c and the epoxy resin poured body 4 of primary winding 1, secondary coil; Primary winding 1 use flat copper band is wound on silicon sheet core 3, one of them winding 2a of three windings of secondary coil by circle enamel covered wire parallel winded on metering level ultracrystallite silicon sheet core 3a, two other winding 2b, 2c with circular copper wire respectively on two protected level silicon sheet core 3b, 3c; In the upper end of primary winding 1, be respectively arranged with two primary windings, 1 binding post 5; Two of primary winding 1 lead-in wires 6 respectively with two corresponding connections of primary winding binding post 5; Three winding 2a, 2b, 2c of primary winding 1 and secondary coil correspond respectively to nexine and skin is installed on iron core 3,3a, 3b, 3c; After laying well by location, with poured with epoxy resin, become epoxy resin poured body 4 for shell body, terminal block 8 is arranged at this shell body bottom, is equiped with six secondary coil binding posts 9 on terminal block 8; Three winding 2a, 2b of secondary coil, 2c six lead-in wires 10 respectively with the corresponding connection of six secondary coil binding posts 9 corresponding on terminal block 8, epoxy resin poured body 4 is fixed on base plate 7 by bolt 11.
Claims (1)
1. a Full-closed current transformer, three windings (2a, 2b, 2c), iron core (3) and the epoxy resin poured body (4) that comprise primary winding (1), secondary coil, it is characterized in that primary winding (1) is wound on silicon sheet core (3) with flat copper band upper, three one of them windings of winding (2a) of secondary coil are upper at metering level ultracrystallite silicon sheet core (3a) by circle enamel covered wire parallel winded, two other winding (2b, 2c) is wound on respectively with circular copper wire on two protected level silicon sheet cores (3b, 3c); Two lead-in wires (6) of primary winding (1) respectively with the corresponding connection of two primary windings (1) binding posts (5); On terminal block (8), be provided with six secondary coil binding posts (9), six lead-in wires (10) of three windings (2a, 2b, 2c) of secondary coil respectively with the corresponding connection of six secondary coil binding posts (9); Three windings (2a, 2b, 2c) of primary winding (1), secondary coil and iron core (3,3a, 3b, 3c) become epoxy resin poured body (4) by poured with epoxy resin, and epoxy resin poured body (4) is fixed on base plate (7) by bolt (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320569399.6U CN203562291U (en) | 2013-09-15 | 2013-09-15 | Totally-closed current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320569399.6U CN203562291U (en) | 2013-09-15 | 2013-09-15 | Totally-closed current transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203562291U true CN203562291U (en) | 2014-04-23 |
Family
ID=50511994
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320569399.6U Expired - Fee Related CN203562291U (en) | 2013-09-15 | 2013-09-15 | Totally-closed current transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203562291U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104952610A (en) * | 2015-06-16 | 2015-09-30 | 大连远东永昌自动化工程有限公司 | Mutual inductor copper strip winding machine |
| CN108630419A (en) * | 2018-06-04 | 2018-10-09 | 湖北大二互科技股份有限公司 | Combined complete formula current transformer |
-
2013
- 2013-09-15 CN CN201320569399.6U patent/CN203562291U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104952610A (en) * | 2015-06-16 | 2015-09-30 | 大连远东永昌自动化工程有限公司 | Mutual inductor copper strip winding machine |
| CN108630419A (en) * | 2018-06-04 | 2018-10-09 | 湖北大二互科技股份有限公司 | Combined complete formula current transformer |
| CN108630419B (en) * | 2018-06-04 | 2023-09-05 | 湖北大二互科技股份有限公司 | Combined sleeve type current transformer |
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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 |
Granted publication date: 20140423 Termination date: 20140915 |
|
| EXPY | Termination of patent right or utility model |