CN207800346U - Double transformation ratio current transformers - Google Patents
Double transformation ratio current transformers Download PDFInfo
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- CN207800346U CN207800346U CN201820011804.5U CN201820011804U CN207800346U CN 207800346 U CN207800346 U CN 207800346U CN 201820011804 U CN201820011804 U CN 201820011804U CN 207800346 U CN207800346 U CN 207800346U
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- winding
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- mutual inductor
- transformation ratio
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Abstract
The utility model discloses a kind of double transformation ratio current transformers, including first winding and secondary winding, secondary winding includes protective winding and measure winding, the measure winding has three output ends including centre tap, respectively with the 1S1 of the connecting terminal on mutual inductor ontology, 1S2, the ends 1S3 connect, there are two output ends for protective winding tool, respectively with the 2S1 of the connecting terminal on mutual inductor ontology, the ends 2S2 connect, there are two output ends for first winding tool, respectively with the terminals P1 on mutual inductor ontology, P2 connections, the measure winding, protective winding and first winding are wound in the different location of transformer iron core and non-overlapping respectively.The utility model is by turning to mutual inductor metering coil with tapped winding, and the tap of winding is led into connecting terminal, realize double no-load voltage ratios, pass through transformer iron core insulation and the processing of winding insulation and the processing of transformer iron core material, winding technique mode so that transformer precision higher, volume smaller.
Description
Technical field
The utility model belongs to transformer technical field, and in particular to a kind of double transformation ratio current transformers.
Background technology
For some enterprises, generally use High-voltage measuring box is measured, in current transformer type selecting, usually by maximum
Power load carries out type selecting, but enterprise is in general, and load current is not less than the 30% of current transformer, but one
A bit in special circumstances, such as limited production, stop production etc. special circumstances, cause load current fairly small, already below current transformer
10%, the accuracy of current transformer at this time is substantially reduced, and is unfavorable for accurate measurement.
Utility model content
The utility model technical issues that need to address are to provide that a kind of measuring accuracy is high, small double no-load voltage ratio Current Mutual Inductances
Device.
To solve the above problems, the utility model is adopted the technical scheme that：
A kind of double transformation ratio current transformers, including current transformer ontology, the current transformer ontology include once around
Group and secondary winding, secondary winding include protective winding and measure winding, and the measure winding has including centre tap
Three output ends, connect respectively with the end 1S1,1S2,1S3 of the connecting terminal on mutual inductor ontology, protective winding tool there are two
Output end is connect with the end 2S1,2S2 of the connecting terminal on mutual inductor ontology respectively, and there are two output ends for first winding tool, divide
It is not connect with the end P1, P2 of the terminals on mutual inductor ontology, the measure winding, protective winding and first winding distinguish coiling
In the different location of transformer iron core and non-overlapping.
Further, described terminals P1, P2 are located at the top of current transformer ontology.
Further, the measure winding is formed by Φ 0.51mm enameled wires and Φ 1.5mm enameled wire Double-wire parallel wounds.
Further, the first winding is formed by 2 × 6mm dual-fiberglass wrapped flat copper wire coilings.
Further, interior insulation is set between the measure winding, protective winding and first winding and transformer iron core
Layer, insulating layer are one layer of white cotton tape half lap, double-deck one layer of the crimped paper half lap, one layer of insulating tape half lap, bilayer successively from the inside to the outside
One layer of crimped paper half lap.
Further, external insulation layer on the outside of measure winding and protective winding, external insulation layer are double-deck successively from the inside to the outside
One layer of crimped paper half lap, one layer of insulating tape half lap, one layer of the double-deck crimped paper half lap, two layers of electrical adhesive tape half lap.
Further, the current transformer ontology is provided with fixation pedestal.
It is using advantageous effect caused by above-mentioned technical proposal：
The utility model is by turning to mutual inductor metering coil with tapped winding, and by the pumping of winding
Head leads to connecting terminal, realizes double no-load voltage ratios, passes through transformer iron core insulation and processing and the transformer iron core of winding insulation
The processing of material, winding technique mode so that transformer precision higher, volume smaller.
Description of the drawings
Fig. 1 is the utility model main structure diagram；
Fig. 2 is the utility model side structure schematic view；
Fig. 3 is the utility model overlooking structure diagram；
Wherein：1. mutual inductor ontology, 2. connecting terminals, 3. pedestals, 4. terminals.
Specific implementation mode
The utility model is described in further detail below in conjunction with the accompanying drawings：
As shown in Figs. 1-3, the utility model includes current transformer ontology 1, and the current transformer ontology 1 includes primary
Winding and secondary winding, secondary winding include protective winding and measure winding, and it includes that centre tap exists that the measure winding, which has,
Three interior output ends, connect with the end 1S1,1S2,1S3 of the connecting terminal 2 on mutual inductor ontology, protective winding has respectively
Two output ends are connect with the end 2S1,2S2 of the connecting terminal 2 on mutual inductor ontology respectively, and there are two outputs for first winding tool
End, connect with the end P1, P2 of the terminals 4 on mutual inductor ontology respectively, the measure winding, protective winding and first winding point
It is not wound in the different location of transformer iron core and non-overlapping.In order to facilitate connecting and fix primary line, the terminals P1,
P2 is located at the top of current transformer ontology.
In order to improve the accuracy of measuring, improve excitation property, the measure winding is by Φ 0.51mm enameled wires and Φ 1.5mm
Enameled wire Double-wire parallel wound forms.The first winding is formed by 2 × 6mm dual-fiberglass wrapped flat copper wire coilings.
In order to ensure insulation and pressure resistance, breakdown, the starting the arc are prevented, between the measure winding and transformer iron core in setting absolutely
Edge layer, insulating layer is one layer of white cotton tape half lap successively from the inside to the outside, double-deck one layer of the crimped paper half lap, one layer of insulating tape half lap, double
One layer of layer crimped paper half lap.Insulating layer is set between measure winding and protective winding, is arranged between protective winding and first winding
External insulation layer, external insulation layer are one layer of the double-deck crimped paper half lap, one layer of insulating tape half lap, the double-deck crimped paper half successively from the inside to the outside
It is one layer folded, two layers of electrical adhesive tape half lap.
In order to facilitate fixed mutual inductor, the current transformer ontology is provided with fixation pedestal, mutual inductor ontology and bottom
Seat cast is integrated.
The utility model mutual inductor selects iron core of the new magnetic material as measure winding, high permeability, lower
Saturation induction density and excellent stability ensure that the higher accuracy of measuring and lower Safety factor, high-quality
Iron core of the import silicon steel sheet after advanced technologies are processed as protected level winding, ensure that higher accurate limitation ratio.So
Mutual inductor has small, light-weight, precision height, the big feature of capacity.One cast pedestal facilitates user installation, mutual inductor steady
Qualitative height.
Claims (7)
1. a kind of double transformation ratio current transformers, including current transformer ontology（1）, it is characterised in that：The current transformer sheet
Body includes first winding and secondary winding, and secondary winding includes protective winding and measure winding, and the measure winding, which has, includes
Three output ends including centre tap, respectively with the connecting terminal on mutual inductor ontology（2）The end 1S1,1S2,1S3 connection,
Protective winding tool there are two output end, respectively with the connecting terminal on mutual inductor ontology（2）The end 2S1,2S2 connection, once around
Group tool there are two output end, respectively with the terminals on mutual inductor ontology（4）The end P1, P2 connection, the measure winding, protection
Winding and first winding are wound in the different location of transformer iron core and non-overlapping respectively.
2. double transformation ratio current transformers according to claim 1, it is characterised in that：Described terminals P1, P2 are located at electric current
The top of mutual inductor ontology.
3. double transformation ratio current transformers according to claim 1 or 2, it is characterised in that：The measure winding is by Φ
0.51mm enameled wires are formed with Φ 1.5mm enameled wire Double-wire parallel wounds.
4. double transformation ratio current transformers according to claim 1 or 2, it is characterised in that：The first winding is by 2 × 6mm
Dual-fiberglass wrapped flat copper wire coiling forms.
5. double transformation ratio current transformers according to claim 4, it is characterised in that：The measure winding, protective winding with
And inner insulating layer is set between first winding and transformer iron core, insulating layer is one layer of white cotton tape half lap successively from the inside to the outside, double
One layer of layer crimped paper half lap, one layer of insulating tape half lap, double-deck one layer of the crimped paper half lap.
6. double transformation ratio current transformers according to claim 5, it is characterised in that：On the outside of measure winding and protective winding
External insulation layer, external insulation layer are one layer of the double-deck crimped paper half lap, one layer of insulating tape half lap, the double-deck crimped paper half successively from the inside to the outside
It is one layer folded, two layers of electrical adhesive tape half lap.
7. double transformation ratio current transformers according to claim 1, it is characterised in that：The current transformer ontology is provided with
Fixation pedestal（3）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820011804.5U CN207800346U (en) | 2018-01-04 | 2018-01-04 | Double transformation ratio current transformers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820011804.5U CN207800346U (en) | 2018-01-04 | 2018-01-04 | Double transformation ratio current transformers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207800346U true CN207800346U (en) | 2018-08-31 |
Family
ID=63278218
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820011804.5U Active CN207800346U (en) | 2018-01-04 | 2018-01-04 | Double transformation ratio current transformers |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207800346U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109378201A (en) * | 2018-11-23 | 2019-02-22 | 厦门大互科技有限公司 | The current transformer of 35kV or less an epoxy resin pouring tap of band |
-
2018
- 2018-01-04 CN CN201820011804.5U patent/CN207800346U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109378201A (en) * | 2018-11-23 | 2019-02-22 | 厦门大互科技有限公司 | The current transformer of 35kV or less an epoxy resin pouring tap of band |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 053000 east side of Xinqiao new road, North District, Hengshui Development Zone, Hebei Province, north side of Xinqu fifth road Patentee after: Hongye Electric Group Co.,Ltd. Address before: 053000 east side of Xinqiao new road, North District, Hengshui Development Zone, Hebei Province, north side of Xinqu fifth road Patentee before: HEBEI HONGYE ELECTRIC Co.,Ltd. |