CN206480481U - A kind of high-precision low current transformer - Google Patents
A kind of high-precision low current transformer Download PDFInfo
- Publication number
- CN206480481U CN206480481U CN201621455997.0U CN201621455997U CN206480481U CN 206480481 U CN206480481 U CN 206480481U CN 201621455997 U CN201621455997 U CN 201621455997U CN 206480481 U CN206480481 U CN 206480481U
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- CN
- China
- Prior art keywords
- coil
- shell
- current transformer
- low current
- precision low
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Abstract
The utility model provides a kind of high-precision low current transformer, it is related to power industry technical field, including shell, magnet ring, coil and lead-out wire, the shell be axially arranged with a through hole and one end be hatch frame cylindrical housings, the magnet ring and the coil are arranged in the shell, the magnet ring is wrapped in the coil, the lead-out wire is connected with the coil, the coil is located at the hatch frame side and is provided with epoxy resin sealant, stitch is additionally provided with the shell, the lead-out wire is connected with the stitch.It is the utility model small volume, simple in construction, do not influenceed when using by extraneous temperature and produce big measurement deviation.
Description
Technical field
The utility model is related to power industry technical field, and in particular to a kind of high-precision low current transformer.
Background technology
Current transformer principle is made according to electromagnetic induction principle.Current transformer is the iron core and winding by closing
Composition.Its first side winding number of turn seldom, is gone here and there in the circuit for the electric current for needing to measure, therefore it often has the whole of circuit
Electric current flows through, and secondary side winding turn ratio is more, is serially connected in measuring instrumentss and protective loop, current transformer operationally,
Its secondary side circuit is to close all the time, therefore measuring instrumentss and the impedance very little of protective loop series coil, Current Mutual Inductance
The close short circuit of the working condition of device.Current transformer is that primary side high current is converted into secondary side low current to measure, secondary
Side can not open a way.
Current transformer plays a part of current transformation and electrical isolation, and wherein some is that the special electric current of measurement is mutual
Sensor.In normal current margin, the current information of power network is provided to appliance arrangements such as measurement, meterings.
For indicating meter, the transformer that integration instrument provides electric current with other similar electrical equipment is referred to as measurement type Current Mutual Inductance
Device, it is desirable in normal current margin, its precision is high and the linearity is good.General measure type current transformer in low temperature or
In the environment of high temperature so that its precision step-down, so as to influence the accuracy of measurement data.
Utility model content
In order to solve the above technical problems, the utility model provides a kind of high-precision low current transformer, its small volume, structure
Simply, do not influenceed when using by extraneous temperature and produce big measurement deviation.
The utility model is adopted the following technical scheme that：
A kind of high-precision low current transformer, including shell, magnet ring, coil and lead-out wire, the shell are to be axially arranged with
One through hole and one end are the cylindrical housings of hatch frame, and the magnet ring and the coil are arranged in the shell, the magnetic
Ring is wrapped in the coil, and the lead-out wire is connected with the coil, and the coil, which is located on the hatch frame side, to be set
Have and stitch is additionally provided with epoxy resin sealant, the shell, the lead-out wire is connected with the stitch.
It is preferred that, the stitch is acicular texture, and the stitch is symmetricly set on the shell both sides, the shell also
The fairlead of adaptable quantity is arranged with, the lead-out wire is each passed through fairlead and is connected with the stitch.
It is preferred that, the magnet ring is formed by iron based nano crystal band coiling.
It is preferred that, the thickness of the iron based nano crystal band is 20 microns.
It is preferred that, the magnet ring outer surface is additionally provided with insulating barrier.
It is preferred that, the shell is made of pet material.
It is preferred that, the coil is formed by enamel-covered wire coiling, and the enamel-cover linear diameter is less than 0.1 millimeter.
It is preferred that, the housing diameter is less than 20 millimeters, and the through-hole diameter is more than 5.6 millimeters.
Compared with prior art, the utility model has the advantage of：
(1) transformer is used by iron based nano crystal band coiling, can meet its required precision；
(2) stitch of unique texture, can reduce the volume of fixed stitch, and shell overall dimensions also reduce therewith；
(3) transformer casing uses fire-retardant, the import polyethylene terephthalate of 155 DEG C of heatproof and special technique
Injection molding is produced, transformer can be used under rugged environment；
(4) fire-retardant, 130 DEG C of heatproof the epoxy resin encapsulated of covering outside coil, the safety distance for meeting transformer will
Ask.
Brief description of the drawings
Accompanying drawing is used for providing to preferred understanding of the present utility model, and constitutes a part for specification, with this practicality
New embodiment is used to explain the utility model together, does not constitute to limitation of the present utility model.In the accompanying drawings：
Fig. 1 is a kind of structural representation of high-precision low current transformer casing of the utility model；
Fig. 2 is a kind of schematic cross-sectional view of high-precision low current transformer casing of the utility model；
Fig. 3 is the structural representation inside a kind of high-precision low current transformer of the utility model.
Marked in figure：1st, shell；2nd, magnet ring；3rd, coil；4th, lead-out wire；5th, through hole；6th, epoxy resin sealant；7th, pin
Pin；8th, fairlead.
Embodiment
Optimal embodiment of the present utility model is described below in conjunction with the accompanying drawings.
As shown in Figures 1 to 3, a kind of high-precision low current transformer of the present utility model, including shell 1, magnet ring 2, coil 3
With lead-out wire 4, shell 1 be axially arranged with a through hole 5 and one end be hatch frame cylindrical housings, magnet ring 2 and coil 3 are set
In in shell 1, magnet ring 2 is wrapped in coil 3, and lead-out wire 4 is connected with coil 3, and coil 3 is located at hatch frame side and is provided with ring
Stitch 7 is additionally provided with oxygen sealing layer of resin 6, shell 1, lead-out wire 4 is connected with stitch 7；Stitch 7 is acicular texture, and stitch 7 is symmetrical
Be arranged at the fairlead 8 that adaptable quantity is also arranged with the both sides of shell 1, shell 1, lead-out wire 4 be each passed through fairlead 8 with
Stitch 7 is connected；Magnet ring 2 is formed by thickness for 20 microns of iron based nano crystal band coiling, and the outer surface of magnet ring 1 is also coated with insulation
Layer；Shell 1 is made of pet material；Coil 3 is formed by enamel-covered wire coiling, and enamel-cover linear diameter is less than
0.1 millimeter；The diameter of shell 1 is less than 20 millimeters, and the diameter of through hole 5 is more than 5.6 millimeters.
The magnet ring that iron core of the present utility model is wound into using the iron based nano crystal band of thickness only 20 microns, after
Continuous to pass through vacuum heat and the end production process of horizontal magnetic heat treatment two, iron core outside forms plus powder spray insulation processing, kept away
The situation exempted from conventional magnet ring overcoat plastic casing volume and then increased occurs；With small-sized coil winding machine, the coiling on iron core, keeps away
Exempt from because the enamel-covered wire of the following specifications of coiling diameter 0.1mm is broken often；Cause to be influenceed by stress during iron core winding simultaneously
And produce big characteristic variations；Coil leans on the part bag half-turn adhesive tape of stitch, then loads housings and lead-out wire is connected into pin
Pin, then lived coil embedding with the epoxy resin of soft bi-component；So transformer can be operated under worse environment.
Transformer of the present utility model uses special iron core winding, can meet its required precision；The pin of unique texture
Pin, can reduce the volume of fixed stitch, and shell overall dimensions also reduce therewith；Transformer casing uses fire-retardant, 155 DEG C of heatproof
Import polyethylene terephthalate and special technique productions injection molding；Fire-retardant, 130 DEG C of heatproof is covered outside coil
Epoxy resin encapsulated, meet the safety required distance of transformer.
Preferred embodiment of the present utility model is the foregoing is only, the utility model is not limited to, although ginseng
The utility model is described in detail according to previous embodiment, for those skilled in the art, it still can be with
Technical scheme described in previous embodiment is modified, or equivalent substitution is carried out to which part technical characteristic.It is all
Within spirit and principle of the present utility model, any modification, equivalent substitution and improvements made etc. should be included in this practicality new
Within the protection domain of type.
Claims (8)
1. a kind of high-precision low current transformer, it is characterised in that including shell, magnet ring, coil and lead-out wire, the shell is
It is axially arranged with a through hole and one end is the cylindrical housings of hatch frame, the magnet ring and the coil is arranged at the shell
Interior, the magnet ring is wrapped in the coil, and the lead-out wire is connected with the coil, it is characterised in that the coil is located at
The hatch frame side, which is provided with epoxy resin sealant, the shell, is additionally provided with stitch, the lead-out wire and the pin
Pin is connected.
2. a kind of high-precision low current transformer according to claim 1, it is characterised in that the stitch is needle-like knot
Structure, the stitch is symmetricly set in the fairlead that adaptable quantity is also arranged with the shell both sides, the shell, described
Lead-out wire is each passed through fairlead and is connected with the stitch.
3. a kind of high-precision low current transformer according to claim 1, it is characterised in that the magnet ring is by iron-based nanometer
Crystal zone material coiling is formed.
4. a kind of high-precision low current transformer according to claim 3, it is characterised in that the iron based nano crystal band
Thickness be 20 microns.
5. a kind of high-precision low current transformer according to claim 3 or 4, it is characterised in that the magnet ring outer surface
It is additionally provided with insulating barrier.
6. a kind of high-precision low current transformer according to claim 1, it is characterised in that the shell is using poly- to benzene
Naphthalate material is made.
7. a kind of high-precision low current transformer according to claim 1, it is characterised in that the coil by enamel-covered wire around
System is formed, and the enamel-cover linear diameter is less than 0.1 millimeter.
8. a kind of high-precision low current transformer according to claim 1, it is characterised in that the housing diameter is less than 20
Millimeter, the through-hole diameter is more than 5.6 millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621455997.0U CN206480481U (en) | 2016-12-28 | 2016-12-28 | A kind of high-precision low current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621455997.0U CN206480481U (en) | 2016-12-28 | 2016-12-28 | A kind of high-precision low current transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206480481U true CN206480481U (en) | 2017-09-08 |
Family
ID=59751267
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621455997.0U Expired - Fee Related CN206480481U (en) | 2016-12-28 | 2016-12-28 | A kind of high-precision low current transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206480481U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108231385A (en) * | 2018-03-22 | 2018-06-29 | 国家海洋技术中心 | The ocean inductively underwater magnet ring of data transmission |
| CN110391078A (en) * | 2019-06-03 | 2019-10-29 | 惠州佳扬电子科技有限公司 | A kind of mutual inductor |
| CN112447385A (en) * | 2020-12-03 | 2021-03-05 | 国创新能源汽车智慧能源装备创新中心(江苏)有限公司 | High-power electric leakage mutual inductor for copper bar measurement |
-
2016
- 2016-12-28 CN CN201621455997.0U patent/CN206480481U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108231385A (en) * | 2018-03-22 | 2018-06-29 | 国家海洋技术中心 | The ocean inductively underwater magnet ring of data transmission |
| CN108231385B (en) * | 2018-03-22 | 2024-05-03 | 国家海洋技术中心 | Ocean inductively coupled data transmission underwater magnetic ring |
| CN110391078A (en) * | 2019-06-03 | 2019-10-29 | 惠州佳扬电子科技有限公司 | A kind of mutual inductor |
| CN112447385A (en) * | 2020-12-03 | 2021-03-05 | 国创新能源汽车智慧能源装备创新中心(江苏)有限公司 | High-power electric leakage mutual inductor for copper bar measurement |
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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: 20170908 Termination date: 20191228 |