CN206907636U - Current transformer with micro-current output - Google Patents
Current transformer with micro-current output Download PDFInfo
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- CN206907636U CN206907636U CN201720660384.9U CN201720660384U CN206907636U CN 206907636 U CN206907636 U CN 206907636U CN 201720660384 U CN201720660384 U CN 201720660384U CN 206907636 U CN206907636 U CN 206907636U
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- micro
- current
- current transformer
- winding
- secondary winding
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Abstract
A kind of current transformer is the utility model is related to, specifically discloses a kind of current transformer with micro-current output.The current transformer includes current transformer main body and micro-current output winding, and the current transformer main body includes the first winding of connection high-pressure section and the secondary winding of output electric signal；The quantity of the secondary winding is 2 groups, is divided into measurement level secondary winding and protected level secondary winding；The micro-current output winding is arranged between measurement level secondary winding and protected level secondary winding, the micro-current output winding connection electric signal output terminal.Current transformer provided by the utility model has the characteristics of easy for installation, cost is low, service life is long, reliable, and the micro current signal precision exported is high, and trueness error is ± 0.2%, and micro current signal can accurately pass to electrification display.
Description
Technical field
It the utility model is related to a kind of current transformer, more particularly to a kind of current transformer with micro-current output.
Background technology
In the prior art, the current transformer in switch cubicle is divided into two kinds：The first winding of the first current transformer connects
One end of insulator, the other end connection electrification display of insulator are connect, interior insulator has high-voltage capacitor, can be high electricity
Pressure is converted into micro-current, and micro-current gives electrification display one signal.When the system is operating, electrification display receives insulator
After the micro current signal for passing to it, electrification display starts blocking device, and the external world can not open switch cubicle, work as system cut-off
When, i.e. close-lock device, the external world can open switch cubicle and be overhauled after electrification display does not receive micro current signal.But
It is that insulator adds cost, occupies the space in cabinet, the high-voltage capacitance spoilage of interior insulator is higher, safeguards into
This is higher.The inside of second of current transformer is equipped with capacitive divider, and capacitive divider output low-voltage, low-voltage is to powered
One signal of display.When the system is operating, electrification display is received after current transformer passes to its low voltage signal,
Electrification display starts blocking device, and the external world can not open switch cubicle, and when system cut-off, electrification display does not receive low electricity
It is close-lock device after pressure signal, the external world can open switch cubicle and be overhauled.But the electricity being equipped with inside current transformer
Hold divider can not accurate control voltage value, export unstable, electrification display needs specific customization, and cost is higher, Wu Fa great
Area is popularized.
Both the above current transformer, various problems more or less be present, people can not be met to current transformer
Performance requirement.Therefore, a kind of electricity for exporting electric signal easy for installation, cost is low, service life is long, reliable of research and development is needed badly
Current transformer.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of current transformer with micro-current output, has peace
The characteristics of dress is convenient, cost is low, service life is long, reliable.
In order to solve the above technical problems, the utility model is realized using following technical scheme：
Current transformer with micro-current output, including current transformer main body and micro-current output winding, the electric current
Current transformer body includes the first winding of connection high-pressure section and the secondary winding of output electric signal；The quantity of the secondary winding
For 2 groups, it is divided into measurement level secondary winding and protected level secondary winding；Micro-current output winding be arranged on measurement level it is secondary around
Between group and protected level secondary winding, the micro-current output winding connects electric signal output terminal by lead.
Wherein, it is above-mentioned with micro-current output current transformer in, it is described measurement level secondary winding and micro-current output around
Group is formed by microcrystalline iron core and fine copper enamel-covered wire, and the fine copper enamel-covered wire is wound on the outside of microcrystalline iron core.
Wherein, in the above-mentioned current transformer with micro-current output, the microcrystalline iron core has dressed outside cushion.
Wherein, in the above-mentioned current transformer with micro-current output, the material of the cushion is semiconductor crimped paper.
Wherein, in the above-mentioned current transformer with micro-current output, the secondary winding is the secondary winding of ring-type.
Wherein, in the above-mentioned current transformer with micro-current output, the current transformer main body also includes screen layer, institute
Screen layer bag is stated outside the secondary winding, and is grounded.
Compared with prior art, the beneficial effects of the utility model are：
1st, the micro-current output winding inside current transformer provided by the utility model, the micro current signal precision of output
Height, trueness error are ± 0.2%, and micro current signal can accurately pass to electrification display；The current transformer is applied to switch
In cabinet, a switch cubicle can save three insulators, greatly reduce and take cabinet space；
2nd, current transformer provided by the utility model and traditional electrification display interaction are good, without specific customization；
3rd, current transformer provided by the utility model has that easy for installation, cost is low, service life is long, reliable
Feature.
Brief description of the drawings
Fig. 1 is the structural representation of the current transformer described in the utility model with micro-current output；
Reference：1- current transformer main bodys；2- first windings；3- measures level secondary winding；4- protected levels it is secondary around
Group；5- micro-currents export winding；6- electric signal output terminals.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describing, it is clear that described embodiment is only the utility model part of the embodiment, rather than whole
Embodiment.
Reference picture 1, the current transformer with micro-current output, including current transformer main body 1 and micro-current output winding
5, the current transformer main body 1 includes the first winding 2 of connection high-pressure section and the secondary winding of output electric signal；Described two
The quantity of secondary winding is 2 groups, is divided into measurement level secondary winding 3 and protected level secondary winding 4；The micro-current output winding 5 is set
Put between measurement level secondary winding 3 and protected level secondary winding 4, the micro-current output winding 5 connects electrical signal
Son 6.The first winding 2 is made up of copper belt, and measurement level secondary winding 3 and micro-current export winding 5 by ultracrystallite iron
Core and fine copper enamel-covered wire are formed, and protected level secondary winding 4 is made up of silicon sheet core and fine copper enamel-covered wire；The fine copper enamel-covered wire
The outside of microcrystalline iron core is wound on, the microcrystalline iron core has dressed outside cushion, and the material of the cushion is semiconductor
Crimped paper, semiconductor crimped paper has the characteristics of sound construction is stable, is hardly damaged, while also has certain insulating properties.
The secondary winding is the secondary winding of ring-type, and the ring-type can be the ring-type of square shape, the ring-type of ellipse, circular ring
The ring-type of shape or other forms.The current transformer main body 1 also includes screen layer, and the screen layer bag is in 2 groups of secondary windings
Outside, and be grounded.
The utility model exports winding by increasing winding-micro-current of a particular design inside current transformer,
The winding uses the iron core of ultracrystallite material, receives the required value of current signal according to conventional electrification display, utilizes electromagnetism sense
Answer principle to calculate the umber of turn for meeting that output requires, ensure micro-current output valve, the electric signal of outside is connected to lead
On lead-out terminal.The micro current signal precision of output is high, and trueness error is only ± 0.2%.The current transformer is applied to switch
In cabinet, a switch cubicle can save three insulators, greatly reduce and take cabinet space.The current transformer also has peace
The characteristics of dress is convenient, cost is low, service life is long, reliable.
Described above is only to preferred embodiment of the present utility model, not the utility model is made any formal
Limitation, it is every according to the technical essence of the utility model to any simple modification made for any of the above embodiments, equivalent variations with
Modification, is belonged in the range of technical solutions of the utility model.
Claims (6)
1. the current transformer with micro-current output, it is characterised in that the current transformer includes current transformer main body (1)
With micro-current output winding (5), the current transformer main body (1) includes first winding (2) and the output of connection high-pressure section
The secondary winding of electric signal；The quantity of the secondary winding be 2 groups, be divided into measurement level secondary winding (3) and protected level it is secondary around
Group (4)；The micro-current output winding (5) is arranged between measurement level secondary winding (3) and protected level secondary winding (4), institute
State micro-current output winding (5) and electric signal output terminal (6) is connected by lead.
2. it is according to claim 1 with micro-current output current transformer, it is characterised in that it is described measurement level it is secondary around
Group (3) and micro-current output winding (5) are formed by microcrystalline iron core and fine copper enamel-covered wire, and the fine copper enamel-covered wire is wound on super
The outside of minicrystal iron core.
3. the current transformer according to claim 2 with micro-current output, it is characterised in that outside the microcrystalline iron core
Wrapping has cushion.
4. the current transformer according to claim 3 with micro-current output, it is characterised in that the material of the cushion
For semiconductor crimped paper.
5. the current transformer with micro-current output according to any one of Claims 1 to 4, it is characterised in that described two
Secondary winding is the secondary winding of ring-type.
6. the current transformer according to claim 5 with micro-current output, it is characterised in that the current transformer master
Body (1) also includes screen layer, and the screen layer bag is grounded outside the secondary winding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720660384.9U CN206907636U (en) | 2017-06-07 | 2017-06-07 | Current transformer with micro-current output |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720660384.9U CN206907636U (en) | 2017-06-07 | 2017-06-07 | Current transformer with micro-current output |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206907636U true CN206907636U (en) | 2018-01-19 |
Family
ID=61286954
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720660384.9U Expired - Fee Related CN206907636U (en) | 2017-06-07 | 2017-06-07 | Current transformer with micro-current output |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206907636U (en) |
-
2017
- 2017-06-07 CN CN201720660384.9U patent/CN206907636U/en not_active Expired - Fee Related
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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 |
Granted publication date: 20180119 Termination date: 20180607 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |