CN204720306U - A kind of novel high saturation magnetic induction casting transformer - Google Patents
A kind of novel high saturation magnetic induction casting transformer Download PDFInfo
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- CN204720306U CN204720306U CN201520484758.7U CN201520484758U CN204720306U CN 204720306 U CN204720306 U CN 204720306U CN 201520484758 U CN201520484758 U CN 201520484758U CN 204720306 U CN204720306 U CN 204720306U
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- annular core
- winding
- secondary winding
- insulating cylinder
- cutting mouth
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Abstract
The utility model discloses a kind of novel high saturation magnetic induction casting transformer, comprise annular core, described annular core is provided with cutting mouth, annular core is cut into two parts by described cutting mouth, the stem stem of described annular core is arranged with insulating cylinder, described insulating cylinder is wound with secondary winding, described secondary winding is wound with a winding, between winding and secondary winding, there is insulating barrier described one time; Described annular core is stepped, and annular core is that the lamination of different in width is formed by stacking, and the sectional area of annular core is 44-46cm
2, the described secondary winding number of turn is 86 circles.The utility model use safety, adopts the annular core with cutting mouth, reduces magnetic hysteresis loss, and conveniently puts insulating cylinder thus realize independent coiling winding, namely direct wrapped on insulating cylinder.
Description
Technical field
The utility model relates to instrument transformer field, particularly relates to the novel high saturation magnetic induction casting transformer of one of 10kV.
Background technology
At present, known 10kV casting transformer is under 1.9Un/ √ 3 (secondary voltage, 132V) voltage, and magnetic is close saturated, once system generation single phase ground fault, very likely causes ferro resonance, the system failure is expanded.Partial discharge does not reach national standard in 1.2Un, 1.2Un/ √ 3 times partial discharges.
Utility model content
Technical problem to be solved in the utility model, be exactly propose a kind of novel high saturation magnetic induction casting transformer, it is under 1.9Un/ √ 3 voltage, and magnetic is close still in unsaturation scope, reduce the possibility causing ferro resonance, and partial discharge is within national requirements.
For solving the problems of the technologies described above, technology of the present utility model by the following technical solutions:
A kind of novel high saturation magnetic induction casting transformer, comprise annular core, described annular core is provided with cutting mouth, annular core is cut into two parts by described cutting mouth, the stem stem of described annular core is arranged with insulating cylinder, described insulating cylinder is wound with secondary winding, described secondary winding is wound with a winding, between winding and secondary winding, there is insulating barrier described one time; Described annular core is stepped, and annular core is that the lamination of different in width is formed by stacking, and the sectional area of annular core is 44-46cm
2, the described secondary winding number of turn is 86 circles, and the number of turn of a winding is determined according to the voltage ratio of secondary winding and instrument transformer.
It is conveniently be enclosed within the stem stem of annular core by the insulating cylinder being wound with secondary winding that annular core is cut into two parts by cutting mouth of the present utility model, treats that two of annular core parts are closed up and are fixed into entirety and use after putting by insulating cylinder again.
As preferably, in order to meet the requirement of product partial discharge further, the end of a described winding is provided with the electrode that radius is 2 millimeters, thus increase arc transition diameter, reduce most high workload field intensity, make partial discharge under 1.2Um voltage, be less than 50pC, under 1.2Un/ √ 3 voltage, be less than 10pC.
Compared with prior art, the beneficial effect that the utility model has is: the utility model use safety, adopts the annular core with cutting mouth, reduces magnetic hysteresis loss, and conveniently puts insulating cylinder thus realize independent coiling winding, namely direct wrapped on insulating cylinder.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model preferred embodiment;
Fig. 2 is the structural representation of the annular core of the utility model preferred embodiment.
In figure: 1-annular core; 2-secondary winding; 3-winding; 4-cutting mouth; 5-insulating cylinder; 6-electrode.
Embodiment
For the understanding the utility model making those skilled in the art more clear and intuitive, below in conjunction with accompanying drawing, the utility model is further described.
Be preferred embodiment of the present utility model as shown in Figure 1-2.
A kind of novel high saturation magnetic induction casting transformer, comprise annular core 1, secondary winding 2 and a winding 3, annular core 1 is the stepped iron core that the lamination of different in width is formed by stacking, and the sectional area of annular core 1 is 44-46cm
2, the number of turn of secondary winding 2 is 86 circles, and the number of turn of a winding is determined according to voltage ratio.Annular core 1 is provided with cutting mouth 4, annular core 1 is cut into two parts by cutting mouth 4, the stem stem of annular core 1 is provided with insulating cylinder 5, concrete grammar is, secondary winding 2 is first wound on insulating cylinder 5, and then the insulating cylinder 5 with secondary winding 2 is set on annular core 1, one time winding 3 is wound in secondary winding 2, between a winding 3 and secondary winding 2, there is insulating barrier, it is that conveniently insulating cylinder 5 is enclosed within the stem stem of annular core 1 that annular core 1 is cut into two parts by cutting mouth 4 of the present utility model, treat that two of annular core 1 parts are closed up and are fixed into entirety and use after putting by insulating cylinder 5 again, in order to meet the requirement of product partial discharge further, the end of a winding 3 is provided with the electrode 6 that radius is 2 millimeters, thus increases arc transition diameter, reduces most high workload field intensity, make partial discharge be less than 50pC under 1.2Un voltage, under 1.2Un/ √ 3 voltage, be less than 10pC.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection range of the present utility model.
Claims (2)
1. a novel high saturation magnetic induction casting transformer, comprise annular core, described annular core is provided with cutting mouth, annular core is cut into two parts by described cutting mouth, the stem stem of described annular core is arranged with insulating cylinder, described insulating cylinder is wound with secondary winding, described secondary winding is wound with a winding, between winding and secondary winding, there is insulating barrier described one time; Described annular core is stepped, and annular core is that the lamination of different in width is formed by stacking, and the sectional area of annular core is 44-46cm
2, the described secondary winding number of turn is 86 circles.
2. novel high saturation magnetic induction casting transformer according to claim 1, is characterized in that: the end of a described winding is provided with the electrode that radius is 2 millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520484758.7U CN204720306U (en) | 2015-07-07 | 2015-07-07 | A kind of novel high saturation magnetic induction casting transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520484758.7U CN204720306U (en) | 2015-07-07 | 2015-07-07 | A kind of novel high saturation magnetic induction casting transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204720306U true CN204720306U (en) | 2015-10-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201520484758.7U Active CN204720306U (en) | 2015-07-07 | 2015-07-07 | A kind of novel high saturation magnetic induction casting transformer |
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| CN (1) | CN204720306U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110275056A (en) * | 2019-07-31 | 2019-09-24 | 西南交通大学 | A kind of rewinding material multipoint earth faults current calculation method considering the classification of silicon steel sheet cross-sectional width |
-
2015
- 2015-07-07 CN CN201520484758.7U patent/CN204720306U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110275056A (en) * | 2019-07-31 | 2019-09-24 | 西南交通大学 | A kind of rewinding material multipoint earth faults current calculation method considering the classification of silicon steel sheet cross-sectional width |
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Legal Events
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |