CN201522932U - High-capacity weather resistance dry-type current transformer - Google Patents
High-capacity weather resistance dry-type current transformer Download PDFInfo
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- CN201522932U CN201522932U CN2009202204065U CN200920220406U CN201522932U CN 201522932 U CN201522932 U CN 201522932U CN 2009202204065 U CN2009202204065 U CN 2009202204065U CN 200920220406 U CN200920220406 U CN 200920220406U CN 201522932 U CN201522932 U CN 201522932U
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- iron core
- current transformer
- weather resistance
- type current
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Abstract
The utility model discloses a high-capacity weather resistance dry-type current transformer that comprises: an iron core, a secondary winding and a primary winding, wherein the iron core is formed by piecing two parts of iron cores together and an insulation board is clamped between the two iron cores; the second winding consists of two coils that are respectively wound on part of the iron core and an insulating layer is arranged between the two coils; a part of the primary winding penetrates through the two parts of iron cores to be coupled and connected with the two coils of the secondary winding on the two parts of iron cores; the iron core, the secondary winding and the primary winding are poured in vacuum and sealed in a formed pouring body through epoxy resin; the outside of the pouring body is provided with a silicon rubber layer; outgoing lines of the primary winding and the secondary winding are respectively electrically connected with connecting terminals arranged on the surface of the pouring body; and the bottom part of the pouring body is provided with an installation bottom plate. By arranging the insulation board and the insulating layer inside and hanging the silicon rubber outside the epoxy resin, the transformer improves the insulating property of products, as well as the properties of resisting heat, cold and weather in outdoor environment, and prolongs the service life of products.
Description
Technical field
The utility model relates to the electrical installation that is used for transmission line, particularly relates to a kind of high power capacity weather resistance dry-type current transformer.
Background technology
Current transformer generally is used in the power network line, as measuring electric energy or protection equipment.The insulation of 35kv or above current transformer at present has following several mode: gas-insulated, oil immersed type insulation; Wherein, gas-insulated is that employing inflation mode is carried out the insulation between inner each parts of instrument transformer, and the oil immersed type insulation is the insulation between inner each parts of oil-filled realization instrument transformer in instrument transformer, inflation, oil-filled insulation mode are revealed easily, pollute the also easy initiation fire of oil-filled insulation, for guaranteeing safe operation, must test instrument transformer and detect maintenance every year, and maintenance is big, the expense height.
The utility model content
Based on above-mentioned existing in prior technology problem, the utility model embodiment provides a kind of high power capacity weather resistance dry-type current transformer, need not be oil-filled in 35KV or above current transformer or inflation insulate, good insulation preformance, non-maintaining, reliability is high.
The utility model is achieved through the following technical solutions:
The utility model embodiment provides a kind of high power capacity dry-type current transformer, comprising:
Iron core, insulation board, secondary winding, insulating barrier, winding, binding post, silastic-layer and an installation base plate;
Described iron core is put together by measuring level iron core and protected level two parts unshakable in one's determination, accompanies insulation board between two parts iron core; Secondary winding is measured coil winding and is measured on the level iron core by measuring coil and protecting coil to constitute, and the protection coil is wound on the protected level iron core, is provided with insulating barrier between measurement coil and the protection coil; The part of a winding is passed two parts iron core, all keeps the corresponding insulation distance with the measurement coil and the protection coil of secondary winding on two parts iron core, and one time winding is of coupled connections through exciting current and the secondary winding that iron core passes through to be produced; Unshakable in one's determination, secondary winding and a winding all are enclosed in the pour mass of formation by the epoxide resin vacuum cast, and the pour mass outside is provided with silastic-layer, and the lead-out wire of winding and secondary winding is electrically connected with the binding post of pour mass surface setting respectively; The pour mass bottom is provided with the installation base plate.
By above-mentioned embodiment of the present utility model as can be seen, establish insulation board by folder between two parts of iron core in the utility model embodiment, reduced eddy current loss unshakable in one's determination, make iron core reduce heating, the life-span that can improve product can reach more than 5 years.In pour mass inside, folder is established insulating barrier between the measurement coil of secondary winding and the protection coil, can produce insulation, the useful life of having improved product between two coils of secondary winding in addition.Because the setting of insulating barrier and insulation board, well insulated in instrument transformer inside, making each parts of this instrument transformer to be enclosed in by the mode of epoxide resin vacuum cast to form in the pour mass need not be oil-filled or high power capacity dry-type current transformer that inflation is insulated, and, in the pour mass outside silastic-layer is set, silastic-layer is cooperated with epoxy resin, the insulation property of this current transformer have not only further been improved, effectively improved simultaneously the cold-resistant of this instrument transformer, high temperature resistant, resistance to weather, be applicable to more inclement conditions area, prolong the useful life of instrument transformer, it is non-maintaining to make this instrument transformer not only can realize, and dependable performance.
Description of drawings
The structural representation of the high power capacity dry-type current transformer that Fig. 1 provides for the utility model embodiment;
The end view of the high power capacity dry-type current transformer that Fig. 2 provides for the utility model embodiment;
The schematic bottom view of the high power capacity dry-type current transformer that Fig. 3 provides for the utility model embodiment;
Each label is among the figure:
1. primary connection copper bar; 2. silastic-layer; 3. suspension ring; 4. installation base plate; 5. secondary connection platform; 6, winding; 7, copper strips; 8. connecting plate; 9. measurement coil; 10. protection coil; 11. insulating barrier; 12. anti-electricity-theft mounting panel; 13, pour mass.
Embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
Embodiment
Present embodiment provides a kind of dry-type current transformer, can be used in 35KV and the above power circuit as measuring equipment, and as Figure 1-3, this instrument transformer comprises:
Iron core, insulation board, secondary winding, insulating barrier 11, winding 6, binding post, a silastic-layer 2 and base plate 4 is installed;
Wherein, described iron core is put together by measuring level iron core and protected level two parts unshakable in one's determination, accompanies insulation board between two parts iron core, and insulation board can adopt insulating board; Secondary winding is measured coil 9 coilings and is measured on the level iron core by measuring coil 9 and protecting coil 10 to constitute, and protection coil 10 is wound on the protected level iron core, is provided with insulating barrier 11 between measurement coil 9 and the protection coil 10, and insulating barrier 11 can adopt two composite-insulating papers; The part of a winding 6 is passed two parts iron core, all keeps the corresponding insulation distance with the measurement coil 9 and the protection coil 10 of secondary winding on two parts iron core, and one time winding is of coupled connections through exciting current and the secondary winding that iron core passes through to be produced; Iron core, secondary winding and a winding all are enclosed in the pour mass 13 of formation by the epoxide resin vacuum cast, pour mass 13 outsides are provided with silastic-layer 2, silastic-layer 2 forms the umbrella skirt construction of multilayer, has improved external insulation flashover voltage and puncture voltage, can use in the place of high height above sea level; The lead-out wire of winding and secondary winding is electrically connected with the binding post that the pour mass surface is provided with respectively, and wherein, the lead-out wire of a winding all connects mode by brazing with the junction of connecting plate and binding post and is connected; The pour mass bottom is provided with the installation base plate, the installation when using with convenient whole instrument transformer.
In the above-mentioned instrument transformer, the wrapping of the outermost layer of a winding has semiconductive paper, is provided with the shielding copper mesh in the semiconductive paper.
Described binding post is arranged on the secondary connection platform, and the secondary connection platform partly is arranged in the pour mass, and binding post is exposed at outward outside the pour mass, is convenient to wiring.Be provided with anti-electricity-theft mounting panel in secondary connection platform outside, anti-electricity-theft mounting panel covers binding post integral body, can effectively prevent to carry out stealing by the short circuit binding post.
Below in conjunction with accompanying drawing 1-3 above-mentioned high power capacity dry-type current transformer is further described in detail:
Current transformer among the utility model embodiment can be made into the high power capacity of 35kv; winding 6 of this current transformer and secondary winding (measuring coil 9 and protection coil 10) are cast in the pour mass 13; and hang up the silastic-layer 2 of umbrella skirt construction in pour mass outside; poured with epoxy resin has guaranteed one; the security reliability of secondary winding insulation; simultaneously; the silastic-layer 2 of the outer umbrella skirt construction that is provided with of epoxy resin poured body; silastic-layer 2 is cooperated with epoxy resin; the insulation property of this current transformer have not only further been improved; the anti-flashover voltage of external insulation and the breakdown voltage capabilities of product have been improved; effectively improved simultaneously the cold-resistant of this instrument transformer; high temperature resistant; resistance to weather; prolong the useful life of instrument transformer; it is non-maintaining to make this instrument transformer not only can realize, and dependable performance.Make this current transformer be applicable to the area of more inclement conditions, can use in the place of high height above sea level.This current transformer by a winding 6 (winding 6 is by the primary connection copper bar 1 shown in Fig. 1, copper strips 7, connecting plate 8), secondary winding (as the measurement coil 9 illustrated among Fig. 1, protection coil 10, as the composite-insulating paper of insulating barrier 11), base plate 4 is installed, is installed on the base plate 4 and can form for 4 suspension ring 3, anti-electricity-theft mounting panel 12 and the secondary connection platform 5 etc. of lifting.Wherein, in pour mass 13 inside; folder is established two composite-insulating papers as insulating barrier 11 between the measurement coil 9 of secondary winding and the protection coil 10; this insulation mode; main advantage is to measure between coil 9 and the protection coil 10 at two coils of secondary winding to produce insulation, the useful life of having improved product.
And; folder is established insulating board between and protected level iron core unshakable in one's determination according to two parts iron core measurement level of iron core; play and reduced the eddy current loss that constitutes between two parts iron core unshakable in one's determination; make the heating that reduces unshakable in one's determination, the life-span that this new-type insulation of actual test shows can improve product can reach more than 5 years.
In practice; difference according to design instrument transformer capacity; sometimes protected level is unshakable in one's determination because volume is bigger; also can adopt two parts iron core to be put together; insulating board is established in also pressing from both sides between two parts iron core of amalgamation formation protected level iron core like this; also can play the eddy current loss between two parts iron core that has reduced the protected level iron core, make the heating that reduces unshakable in one's determination, the life-span that this new-type insulation of actual test shows can improve product can reach more than 5 years.
In above-mentioned current transformer, primary connection copper bar 1 and the connecting plate 8 of forming a winding, connecting plate 8 and all connect with brazing as the copper strips 7 of primary winding coils, the benefit of welding is solid and reliable, reduced resistance, reduced the composition of exciting curent, winding and secondary winding can better be realized--the conversion of-magnetic-electricity.
In above-mentioned current transformer, winding and secondary winding wrapping method all employing office are put the wrapping method, specifically be to prick with the semiconductive paper bag at the outermost layer of a winding, wrap up at the inner shielding copper mesh that adopts of semiconductive paper, the method helps the level that raising office puts, and improves the useful life of this current transformer.Effectively reduce office's value of putting, can reach the respective standard of country.
In this current transformer, also be provided with four inserts (can be that nut is installed) is installed, each install inserts all firm be cast in pour mass inside, on the installation base plate 4 of the bottom surface of pour mass setting, be provided with four suspension ring 3, in the time of conveniently to this current transformer handling, and by the installation inserts this current transformer being installed solid and reliable (referring to Fig. 1).
In the above-mentioned current transformer, secondary connection platform 5 is used to be provided with the secondary connection terminal, and the part of secondary connection platform 5 is cast in the pour mass, a part is exposed at outside the pour mass, and the part that exposes is the secondary connection terminal, makes things convenient for wiring, can get by no-load voltage ratio different, flexibly wiring.Anti-electricity-theft mounting panel 12 covers in the outside of secondary connection platform 5, makes whole secondary connection platform all ensconce anti-electricity-theft mounting panel 12 the insides, can effectively prevent the generation of stealing.
The main insulation of above-mentioned current transformer adopts poured with epoxy resin to form, wrap one deck silicon rubber in the outside of epoxy resin, and make layer silicon rubber form umbrella skirt construction, because insulating resin solidifies back mechanical strength height, both satisfy the electrical insulation properties requirement, and can bear mechanical load again; The electrically insulating silicone rubber full skirt of outsourcing has increased creep distance, avoids the generation of external insulation flashover, and silastic material is applicable to outdoor use, and efflorescence prevention is cold-resistant heat-resisting; The metering of this current transformer, measure level and time can accomplish 0.2,0.2S, 0.5,0.5S, protected level can accomplish higher level time, and whole current transformer is simple in structure, is easy to make, and the reliability height can use in the higher place of height above sea level again simultaneously.
In sum, high power capacity weather resistance dry-type current transformer among the utility model embodiment need not be oil-filled or the mode of inflation, combination by silicon rubber and epoxy resin, better insulation property had both been realized, improved heat-resisting, cold-resistant, weather resistance performance again, made this instrument transformer be applicable to wider area; And, press from both sides insulating board between two iron cores in the pour mass internal structure of current transformer, and pressing from both sides insulating board between two coils of secondary winding, reduce the turbine heating loss, effectively prolonged the life-span of instrument transformer; By anti-electricity-theft device is set, can effectively avoid stealing; This instrument transformer is simple in structure, and is non-maintaining, and it is low to have reduced use cost, saved resource, reached good environment protecting.
The above; it only is the preferable embodiment of the utility model; but protection range of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within the protection range of the present utility model.Therefore, protection range of the present utility model should be as the criterion with the protection range of claims.
Claims (9)
1. a high power capacity weather resistance dry-type current transformer is characterized in that, comprising:
Iron core, insulation board, secondary winding, insulating barrier, winding, binding post, silastic-layer and an installation base plate;
Described iron core is put together by measuring level iron core and protected level two parts unshakable in one's determination, accompanies insulation board between two parts iron core; Secondary winding is measured coil winding and is measured on the level iron core by measuring coil and protecting coil to constitute, and the protection coil is wound on the protected level iron core, is provided with insulating barrier between measurement coil and the protection coil; The part of a winding is passed two parts iron core, all keeps the corresponding insulation distance with the measurement coil and the protection coil of secondary winding on two parts iron core, and one time winding is of coupled connections through exciting current and the secondary winding that iron core passes through to be produced; Unshakable in one's determination, secondary winding and a winding all are enclosed in the pour mass of formation by the epoxide resin vacuum cast, and the pour mass outside is provided with silastic-layer, and the lead-out wire of winding and secondary winding is electrically connected with the binding post of pour mass surface setting respectively; The pour mass bottom is provided with the installation base plate.
2. high power capacity weather resistance dry-type current transformer device as claimed in claim 1 is characterized in that described insulating barrier is two composite-insulating papers.
3. high power capacity weather resistance dry-type current transformer as claimed in claim 1 is characterized in that, described insulation board adopts insulating board.
4. high power capacity weather resistance dry-type current transformer as claimed in claim 1, it is characterized in that, a described winding is a copper strips, and the binding post corresponding with the lead-out wire of a winding is the primary connection copper bar, and the lead-out wire of a winding is welded to connect through connecting plate and primary connection copper bar.
5. high power capacity weather resistance dry-type current transformer as claimed in claim 1 is characterized in that, the outermost layer wrapping of a described winding has semiconductive paper.
6. high power capacity weather resistance dry-type current transformer as claimed in claim 5 is characterized in that, is provided with the shielding copper mesh in the described semiconductive paper.
7. high power capacity weather resistance dry-type current transformer as claimed in claim 1 is characterized in that, the silastic-layer of described pour mass outside forms umbrella skirt construction.
8. high power capacity weather resistance dry-type current transformer as claimed in claim 1 is characterized in that described binding post is arranged on the secondary connection platform, and described secondary connection platform partly is arranged in the pour mass.
9. high power capacity weather resistance dry-type current transformer as claimed in claim 8 is characterized in that described instrument transformer also comprises: anti-electricity-theft mounting panel, be arranged on described secondary connection platform outside, and cover the binding post on the secondary connection platform.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202204065U CN201522932U (en) | 2009-10-28 | 2009-10-28 | High-capacity weather resistance dry-type current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202204065U CN201522932U (en) | 2009-10-28 | 2009-10-28 | High-capacity weather resistance dry-type current transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201522932U true CN201522932U (en) | 2010-07-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202204065U Expired - Fee Related CN201522932U (en) | 2009-10-28 | 2009-10-28 | High-capacity weather resistance dry-type current transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201522932U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102832030A (en) * | 2012-09-17 | 2012-12-19 | 北京水木源华电气有限公司 | Electronic-type transformer and production method |
| 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 |
| 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 |
-
2009
- 2009-10-28 CN CN2009202204065U patent/CN201522932U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102832030A (en) * | 2012-09-17 | 2012-12-19 | 北京水木源华电气有限公司 | Electronic-type transformer and production method |
| CN102832030B (en) * | 2012-09-17 | 2016-01-20 | 北京水木源华电气股份有限公司 | A kind of electronic mutual inductor and manufacture method |
| 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 |
| 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 |
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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: 20100707 Termination date: 20141028 |
|
| EXPY | Termination of patent right or utility model | ||
| C49 | Reinstatement of patent right or utility model | ||
| RR01 | Reinstatement of patent right |
Former decision: cessation of patent right due to non-payment of the annual fee Former decision publication date: 20160113 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100707 Termination date: 20151028 |
|
| EXPY | Termination of patent right or utility model |