CN207068637U - Indoor support type current transformer - Google Patents
Indoor support type current transformer Download PDFInfo
- Publication number
- CN207068637U CN207068637U CN201720976352.XU CN201720976352U CN207068637U CN 207068637 U CN207068637 U CN 207068637U CN 201720976352 U CN201720976352 U CN 201720976352U CN 207068637 U CN207068637 U CN 207068637U
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- China
- Prior art keywords
- insulator
- winding
- current transformer
- type current
- support type
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- Expired - Fee Related
Links
- 238000004804 winding Methods 0.000 claims abstract description 70
- 239000012212 insulator Substances 0.000 claims abstract description 44
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000003822 epoxy resin Substances 0.000 claims abstract description 8
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 8
- 238000007789 sealing Methods 0.000 claims description 10
- 239000012780 transparent material Substances 0.000 claims description 5
- 238000009530 blood pressure measurement Methods 0.000 abstract description 2
- 230000007246 mechanism Effects 0.000 abstract description 2
- 230000009466 transformation Effects 0.000 abstract description 2
- 238000009434 installation Methods 0.000 description 6
- 230000008859 change Effects 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009422 external insulation Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Landscapes
- Transformers For Measuring Instruments (AREA)
Abstract
Power system high-pressure measurement mechanism is the utility model is related to, specifically a kind of indoor support type current transformer.Including iron core, first winding, secondary winding, primary connection terminal, flat base, secondary wiring terminals and insulator, wherein iron core, first winding and secondary winding are packaged in insulator, secondary winding is multigroup and is wound in respectively on the iron core of each accurate level winding, the secondary wiring terminals of secondary winding are drawn by the bottom of insulator, first winding passes through each accurate level secondary winding, and two primary connection terminals are arranged at the top of insulator, insulator is arranged on flat base.The utility model is formed using epoxide resin vacuum cast, small volume, creep age distance is big, measuring accuracy is high, capacity is big, polytropic ratio, anti-electricity-theft, be can be widely used for power system switch cabinet transformation and is newly designed in switch cubicle.
Description
Technical field
Power system high-pressure measurement mechanism is the utility model is related to, specifically a kind of indoor column support type Current Mutual Inductance
Device.
Background technology
Totally-enclosed Multiple coil current transformer is that electric current, electric energy or relay protection are measured in 10kV power system switch cabinets
Equipment, its installation site are mainly the most forms using side dress or formal dress of mounting means in the main bus-bar room of 10kV switch cubicles,
The totally-enclosed Multiple coil current transformer that power system at present uses has that volume is big, and surface creepage is apart from small, gradation for surface pollution more
Low, the shortcomings of no-load voltage ratio is single, and capacity is low, easy stealing, properties of product extend with usage time, the different journeys of its external insulation performance
Degree declines, and capacity and no-load voltage ratio can not meet the needs of growing power system, turn into equipment safety in power system
The hidden danger of operation, perplex power system maintainer all the time, turn into the totally-enclosed Multiple coil current transformer upgrading of power system and change
Make and urgently solved the problems, such as in developing.
Utility model content
In view of the above-mentioned problems, the purpose of this utility model is to provide a kind of indoor support type current transformer, to solve
Totally-enclosed Multiple coil current transformer volume is big in existing power system switch cabinet, creep age distance is small, gradation for surface pollution is low, no-load voltage ratio list
One, the shortcomings of capacity is low, easy stealing.
To achieve these goals, the utility model uses following technical scheme：
A kind of indoor support type current transformer, including iron core, first winding, secondary winding, primary connection terminal, flat board
Base, secondary wiring terminals and insulator, wherein iron core, first winding and secondary winding are packaged in insulator, described secondary
Winding is multigroup and is wound in respectively on the iron core of each accurate level winding, the secondary wiring terminals of the secondary winding
Drawn by the bottom of the insulator, the first winding passes through each secondary winding, two primary connections of the first winding
Terminal is arranged at the top of the insulator, and the insulator is arranged on flat base.
The insulator is the integrative-structure formed using epoxide resin vacuum cast.
The left and right side of the insulator part corresponding with first winding is provided with convex plane, before the insulator,
Bottom rear is provided with groove.
The secondary wiring terminals are located in the groove on front side of the insulator.
The primary connection terminal is flat terminal plate, and the flat terminal plate is embedded in the insulator and top is revealed
In the outside of the insulator, the flat terminal plate is provided with screwed hole.
The lower section of the secondary wiring terminals is provided with secondary connection platform with the insulator integrative-structure, described secondary to connect
Line platform is provided with the secondary connection lid by the secondary wiring terminals cover in the inner.
The secondary connection lid uses transparent material, and the secondary connection lid secondary is connect by sealing cover screw with described
Line platform is connected, and lead seal hole is carried on the sealing cover screw.
The secondary winding is supported by secondary winding support.
The group number of the secondary winding is less than or equal to four groups
The utility model has advantages below and beneficial effect：
It is 1. the utility model small volume, flexible for installation.The utility model optimizing structure design, structure is compacter, two
Primary connection terminal shape is the exposed flat terminal plate with threaded hole of embedded pour mass and part, is effectively ensured in main bus-bar
Capable electric and mechanical crimp is discharged into and out of line with bus in room, flexibly can be installed in switch cabinet, as electric current, electric energy meter
Amount and relay protection use.
2. the utility model insulation is stable, creep age distance is big.The utility model is poured and integral using epoxide resin vacuum
Structure, insulation is reliable and stable, product surrounding design concave and convex plane, effectively increases surface creepage distance, improves gradation for surface pollution.
3. the utility model measuring accuracy is high, capacity is big, can do polytropic ratio.The utility model measuring line uses superconducting magnetic material
Material, measuring accuracy can reach 0.2S levels, and the standard that product measures in the case where wide load and load change greatly is effectively ensured
The capacity of true property, gauging of products and protected level is big, substantially meets user's use, and metering can make multiple no-load voltage ratio with protective winding
Form, fully meet power system increase-volume in future needs.
4. the anti-electricity-theft transparence of the utility model.The utility model secondary wiring terminals, which are located at made of transparent material, to be covered
In the secondary terminal box of plate sealing, the actual conditions of secondary connection can be conveniently observed directly, secondary terminal box, which has, carries lead
Function is sealed, avoids switching secondary line and causes stealing electricity phenomenon.
Brief description of the drawings
Fig. 1 is internal structure schematic diagram of the present utility model；
Fig. 2 is external structure schematic diagram of the present utility model；
Fig. 3 is Fig. 2 left view.
In figure：1 is iron core, and 2 be first winding, and 3 be secondary winding, and 4 be primary connection terminal, and 5 be secondary connection platform, 6
It is convex plane for flat base, 7,8 be secondary wiring terminals, and 9 be secondary connection lid, and 10 be sealing cover screw, and 11 be secondary
Winding support, 12 be insulator.
Embodiment
In order that the purpose of this utility model, technical scheme and advantage are clearer, below in conjunction with the accompanying drawings and it is embodied
The utility model is described in detail example.
As Figure 1-3, a kind of indoor support type current transformer provided by the utility model, including iron core 1, once around
Group 2, secondary winding 3, primary connection terminal 4, flat base 6, secondary wiring terminals 8 and insulator 12, wherein iron core 1, once
Winding 2 and secondary winding 3 are packaged in insulator 12, secondary winding 3 for it is multigroup and be wound in respectively each accurate level around
On the iron core 1 of group, the secondary wiring terminals 8 of secondary winding 3 are drawn by the bottom of insulator 12.First winding 2 passes through each standard
True level winding 3, two primary connection terminals 4 of first winding 2 are arranged at the top of insulator 12, and insulator 12 is arranged on band
Have on the flat base 6 of mounting hole.
Insulator 12 is the integrative-structure formed using epoxide resin vacuum cast.The left and right side of insulator 12 with once
The corresponding part of winding 2 is provided with convex plane 7, and the surrounding of convex plane 7 is chamfered transition；The forward and backward side bottom of insulator 12
Portion is provided with groove, and secondary wiring terminals 8 are located in the groove of the front side of insulator 12.
Primary connection terminal 4 is flat terminal plate, and flat terminal plate is embedded in insulator 12 and top is exposed to insulator 12
Outside, flat terminal plate is provided with screwed hole.
In an embodiment of the present utility model, the height of two exposed parts of primary connection terminal 4 is 2mm, spiral shell thereon
A diameter of M12 of pit, primary connection terminal 4 is effectively ensured in main bus-bar room discharges into electric and machine of going into and out of line with bus
Tool crimps.
The lower section of secondary wiring terminals 8 is provided with secondary connection platform 5 with the integrative-structure of insulator 12, on secondary connection platform 5
Provided with secondary wiring terminals 8 are covered into secondary connection lid 9 in the inner.
Secondary connection lid 9 uses transparent material, and secondary connection lid 9 is connected by sealing cover screw 10 and secondary connection platform 5
Connect, lead seal hole is carried on sealing cover screw 10.
The group number of secondary winding 3 is less than or equal to four groups, for monotropic ratio or multiple no-load voltage ratio.Each secondary winding 3 is respectively by secondary
Winding support 11 supports, and each winding can do multiple no-load voltage ratio, to meet power system increase-volume in future needs.
The forming process of the integrative-structure of insulator 12 is：Secondary winding 3 is equably wound on to the iron core 1 of circular ring type
On, and aid in after wrapping up insulating materials, using specific purpose tool coiling first winding 2 and insulated and buffer wrapping, formed and had
Once binding post 4, first winding 2, the coil device body of secondary winding 3；Secondary winding 3 is fixed by secondary winding support 11
On mould, first winding 2 is fixed on mould by primary connection terminal 4, is poured after adjusting distance with epoxide resin vacuum
Note insulation, therewith into an integral structure, last integral installation is on flat base 6.
The utility model is manufactured by following process：
Secondary winding 3 (the present embodiment is 4, using multiple no-load voltage ratio 8, or monotropic ratio) is equably wound on circular ring type
Iron core 1 on, and aid in after wrapping up insulating materials, using specific purpose tool coiling first winding 2 and insulated and buffer wrapping,
Form the coil device body with primary connection terminal 4, first winding 2, secondary winding 3 and secondary wiring terminals 8；Secondary winding
3 are fixed on mould using secondary winding support 11, and first winding 2 is fixed on mould using primary connection terminal 4, is adjusted
Formed after distance with epoxide resin vacuum cast solidification, therewith as one by primary connection terminal 4, insulator 12, secondary connect
The integral structure of the grade of line platform 5, it is arranged on connector on a flat base 6 with mounting hole, finally transparent material
Manufactured secondary connection lid 9, the envelope of secondary wiring terminals 8 is put using sealing cover screw 10.User is in use, can be conveniently straight
The actual conditions for observing secondary connection are connect, three sides that sealing cover screw 10 has lead seal hole and secondary connection lid 9 have
Circular wire hole, is easy to the extraction of secondary lead wires, while have anti-stealing electricity function.
In actual applications, installation site is mainly in the main bus-bar room of 10kV switch cubicles to the utility model, is filled using side
Or the form installation of formal dress, passed through and be fixed on cabinet plate from transformer bottom plate mounting hole with bolt, then carried out again once female
The electric and mechanical crimp of line and secondary cable line, finally installs secondary connection cover, that is, completes installation.The utility model can be with
Do the winding of four to six class of accuracies, and each winding load capacity is also higher, relatively usual 15VA, can increase by 20 to
30VA, there is the function of Large Copacity.
The utility model is totally-enclosed Multiple coil current transformer, is the new production of one kind fully according to national standard design
Product, using rolling iron core, using electromagnetic conversion principle, enable the change feelings of secondary current reflected measurement primary current exactly
Condition, it is transferred to secondary measurement and control device；Product is directly mounted in switch cubicle, as electric current, electric energy measurement and after
Electric protection uses.The utility model using epoxide resin vacuum cast form, small volume, creep age distance is big, measuring accuracy is high, hold
Amount is big, polytropic ratio, anti-electricity-theft, can be widely used in power system switch cabinet transformation and new design switch cubicle.
Embodiment of the present utility model is the foregoing is only, is not intended to limit the scope of protection of the utility model.It is all
Made within spirit of the present utility model and principle any modification, equivalent substitution and improvements, extension etc., are all contained in this reality
With in new protection domain.
Claims (9)
1. a kind of indoor support type current transformer, it is characterised in that including iron core (1), first winding (2), secondary winding
(3), primary connection terminal (4), flat base (6), secondary wiring terminals (8) and insulator (12), wherein iron core (1), once
Winding (2) and secondary winding (3) are packaged in insulator (12), and the secondary winding (3) is multigroup and is wound in respectively each
On the iron core (1) of individual accurate level winding, the secondary wiring terminals (8) of the secondary winding (3) are by the insulator (12)
Bottom is drawn, and the first winding (2) passes through each secondary winding (3), two primary connection terminals of the first winding (2)
(4) top of the insulator (12) is arranged at, the insulator (12) is arranged on flat base (6).
2. indoor support type current transformer according to claim 1, it is characterised in that the insulator (12) is use
The integrative-structure that epoxide resin vacuum cast forms.
3. indoor support type current transformer according to claim 2, it is characterised in that a left side for the insulator (12),
The right side part corresponding with first winding (2) is provided with convex plane (7), and the forward and backward side bottom of the insulator (12) is provided with
Groove.
4. indoor support type current transformer according to claim 3, it is characterised in that the secondary wiring terminals (8)
In the groove on front side of the insulator (12).
5. indoor support type current transformer according to claim 2, it is characterised in that the primary connection terminal (4)
For flat terminal plate, the flat terminal plate is embedded in the insulator (12) and top and is exposed to the outer of the insulator (12)
Portion, the flat terminal plate are provided with screwed hole.
6. indoor support type current transformer according to claim 2, it is characterised in that the secondary wiring terminals (8)
Lower section be provided with secondary connection platform (5) with the insulator (12) integrative-structure, the secondary connection platform (5) is provided with institute
State the secondary connection lid (9) of secondary wiring terminals (8) cover in the inner.
7. indoor support type current transformer according to claim 6, it is characterised in that the secondary connection lid (9)
Using transparent material, the secondary connection lid (9) is connected by sealing cover screw (10) with the secondary connection platform (5), described
Lead seal hole is carried on sealing cover screw (10).
8. indoor support type current transformer according to claim 2, it is characterised in that the secondary winding (3) passes through
Secondary winding support (11) supports.
9. indoor support type current transformer according to claim 1, it is characterised in that the group of the secondary winding (3)
Number is less than or equal to four groups.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720976352.XU CN207068637U (en) | 2017-08-07 | 2017-08-07 | Indoor support type current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720976352.XU CN207068637U (en) | 2017-08-07 | 2017-08-07 | Indoor support type current transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207068637U true CN207068637U (en) | 2018-03-02 |
Family
ID=61519928
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720976352.XU Expired - Fee Related CN207068637U (en) | 2017-08-07 | 2017-08-07 | Indoor support type current transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207068637U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111341524A (en) * | 2020-03-06 | 2020-06-26 | 广东得成科技有限公司 | Current transformer with high IP protection level |
| CN111554487A (en) * | 2020-05-20 | 2020-08-18 | 安徽华能集团电器有限公司 | Current transformer with convenient plug |
-
2017
- 2017-08-07 CN CN201720976352.XU patent/CN207068637U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111341524A (en) * | 2020-03-06 | 2020-06-26 | 广东得成科技有限公司 | Current transformer with high IP protection level |
| CN111554487A (en) * | 2020-05-20 | 2020-08-18 | 安徽华能集团电器有限公司 | Current transformer with convenient plug |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| 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: 20180302 |