CN201994150U - Power-type precise metallic-film resistor used for power transmission and transformation of high-voltage power grid - Google Patents
Power-type precise metallic-film resistor used for power transmission and transformation of high-voltage power grid Download PDFInfo
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- CN201994150U CN201994150U CN2011200633171U CN201120063317U CN201994150U CN 201994150 U CN201994150 U CN 201994150U CN 2011200633171 U CN2011200633171 U CN 2011200633171U CN 201120063317 U CN201120063317 U CN 201120063317U CN 201994150 U CN201994150 U CN 201994150U
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- resistor
- film resistor
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Abstract
The utility model relates to a power-type precise metallic-film resistor used for power transmission and transformation of a high-voltage power grid. The power-type precise metallic-film resistor comprises a resistance body (1), an outgoing line (2) and an insulating encapsulation (3), wherein the resistance body (1) comprises a resistance matrix (4) and a resistance membrane (5); the resistance membrane (5) is wrapped on the outer surface of the resistance matrix (4); the insulating encapsulation (3) is wrapped on the outer surface of the resistance membrane (5); and a cylinder ceramic outer shell (6) is encapsulated outside the insulating encapsulation (3). In the power-type precise metallic-film resistor, since the high-purity alumina ceramic material is adopted as the resistance matrix and is encapsulated by the cylinder ceramic outer shell, the radiating volume of the resistor is increased, the thermal stability is improved, the external interference is reduced, so that the power-type precise metallic-film resistor can meet the use requirements of a high-voltage circuit and can be suitable for outwork.
Description
Technical field
The utility model relates to a kind of resistor, particularly a kind of high voltage resistor.
Background technology
The core component of the electric resistance partial pressure type voltage instrument transformer that generally adopts in the high-voltage fence is the high pressure voltage grading resistor at present.But voltage transformer requires very high to the required precision and the thermal stability of resistor, and out of doors in the operation, usually the technical indicator of first-selected thick-film resistor is difficult to reach the requirement of instrument transformer, even best thick-film resistor can not adapt to outdoor study, and outdoor study is inevitably, because the electrical network power transmission and transformation can not be carried out indoor.
The utility model content
The technical problems to be solved in the utility model is to provide a kind of rapid heat dissipation, and the thermal stability height is applicable to outdoor high voltage resistor.
For solving the problems of the technologies described above, the basic design of the technical solution adopted in the utility model is: a kind of high-voltage fence power transmission and transformation power-type precision metal film resistor, comprise resistive element, lead-out wire, insulation is sealed, and wherein resistive element is made up of resistance base body and resistance film, and resistance film is coated on the outer surface of resistance base body, the insulating bag package overlays on the outer surface of resistance film, also is packaged with a cylinder ceramic package outside insulation is sealed.
As further improvement of the utility model, also has ring uplift on the side of described cylinder ceramic package.
As further improvement of the utility model, described resistance base body is with containing 99%Al
2O
3Alumina ceramic material make.
As further improvement of the utility model, described resistance film is the target of HIGH-PURITY SILICON and the oxygen film that micro-oxygenation forms.
As further improvement of the utility model, the lead-out wire of described resistor is the multiply tin annealed copper wire.
As further improvement of the utility model, described lead-out wire is extended with the reservation line outside ceramic package.
The utility model is a matrix owing to employing contains the high-purity alumina ceramic material, reached the requirement of the inner high compactness of resistive element, surperficial best bright finish, high-flatness, high reliability, good heat dissipation, for high accuracy, low-temperature coefficient and the high stability that improves resistor lays the foundation.And the resistance film of resistor is the target of HIGH-PURITY SILICON and the oxygen film that micro-oxygenation forms, the resistance to impact height of rete.
The effect that also can play damp proof insulation except that insulation is sealed in the insulation that is coated on the rete outer surface.
To the improvement of lead-out wire is for adapting to the load-bearing and the objective circumstances of distortion repeatedly when installing, and changes the single tinned wird of former straight cutting resistor into the multiply tin annealed copper wire, guarantee to install and use not break in the process also promptly not open a way, and the increase bearing capacity.
Ring uplift on the side of ceramic package also can satisfy the requirement that high-tension resistive surface equipotential is installed.
With the cylinder ceramic package, the heat radiation volume of resistor strengthens by encapsulation, and thermal stability also can improve greatly, and the external interference that is subjected to also can reduce.Thereby this high voltage resistor, the instructions for use of high-tension circuit can be satisfied, and the requirement of outwork can be adapted to.
Description of drawings
Fig. 1 is the structural principle schematic diagrames of a kind of high-voltage fence power transmission and transformation of the present utility model with the power-type precision metal film resistor;
Fig. 2 is the left view of Fig. 1.
Embodiment
Be described further below in conjunction with the structural principle of accompanying drawing a kind of execution mode of the present utility model:
A kind of high-voltage fence power transmission and transformation power-type precision metal film resistor comprises resistive element 1, lead-out wire 2, and insulation seals 3, and wherein resistive element is made up of resistance base body 4 and resistance film 5; With containing 99%Al
2O
3The resistance base body 4 made of alumina ceramic material, the oxygen film that the resistance film 5 on its outer surface forms for target and micro-oxygenation with HIGH-PURITY SILICON; Again the multiply tin annealed copper wire is connected on the resistive element 1 as lead-out wire 2, coats lacquer type organic coating formation insulation at the outer surface of resistance film 5 then and seal 3; Seal in insulation on 3 the basis and encapsulate cylinder ceramic package 6.Described cylinder ceramic package 6 bottom surface diameters are 13.5mm, and length is 24mm, in its side ring uplift 7 is arranged, and diameter is 16mm, and length is 14mm; Also be extended with the reservation line 2 of lead-out wire outside cylinder ceramic package 6, length is 17mm-23mm.
As a kind of preferred, when resistance base body is handled, to high about about 250 ℃ of the treatment temperature of embryo at the bottom of the metalfilmresistor, such processing can improve the stability of resistance base body and its temperature coefficient is stabilized in 15ppm/ ℃ than usually for its heat treatment temperature.
As a kind of preferred, after the resistance definite value, its half-finished processing is increased two procedures, i.e. the long-time energising of high voltage is aging, reaches 120 seconds such as 3W1M Ω resistance is applied AC value voltage 2500V; And the constant temperature insulation is aging, wears out 24 hours about 135 ℃.
Through the resistor after the above-mentioned processing, its power headroom improved nearly 1 times suitable with thick-film resistor power, can reach 5W.
In conjunction with the accompanying drawings embodiment of the present utility model has been done detailed description above, but the utility model is not limited to the foregoing description, in the ken that those skilled in the art of the present technique possessed, can also under the prerequisite that does not break away from the utility model aim, make various variations.
Claims (7)
1. high-voltage fence power transmission and transformation power-type precision metal film resistor, comprise resistive element (1), lead-out wire (2), (3) are sealed in insulation, wherein resistive element (1) is made up of resistance base body (4) and resistance film (5), resistance film (5) is coated on the outer surface of resistance base body (4), and the outer surface that (3) are coated on resistance film (5) is sealed in insulation, it is characterized in that: seal in insulation and also be packaged with a cylinder ceramic package (6) outside (3).
2. by the described resistor of claim 1, it is characterized in that: described cylinder ceramic package (6) bottom surface diameter is 13.5mm, and length is 24mm.
3. by the described resistor of claim 2, it is characterized in that: also have ring uplift (7) on described cylinder ceramic package (6) side, its diameter is 16mm, and length is 14mm.
4. by the described resistor of claim 1, it is characterized in that: described lead-out wire (2) is the multiply tin annealed copper wire.
5. by the described resistor of claim 4, it is characterized in that: the reservation line length that described lead-out wire (2) extends outside ceramic package (6) is 17mm-23mm.
6. by the described resistor of claim 1, it is characterized in that: the material of described resistance film (5) is the target of HIGH-PURITY SILICON.
7. by the described resistor of claim 6, it is characterized in that: described resistance film (5) is the oxygen film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200633171U CN201994150U (en) | 2011-03-11 | 2011-03-11 | Power-type precise metallic-film resistor used for power transmission and transformation of high-voltage power grid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200633171U CN201994150U (en) | 2011-03-11 | 2011-03-11 | Power-type precise metallic-film resistor used for power transmission and transformation of high-voltage power grid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201994150U true CN201994150U (en) | 2011-09-28 |
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ID=44670630
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200633171U Expired - Fee Related CN201994150U (en) | 2011-03-11 | 2011-03-11 | Power-type precise metallic-film resistor used for power transmission and transformation of high-voltage power grid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201994150U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104882234A (en) * | 2015-06-05 | 2015-09-02 | 广东明路电力电子有限公司 | Power resistor of three-dimensional network structure and processing technique of power resistor |
-
2011
- 2011-03-11 CN CN2011200633171U patent/CN201994150U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104882234A (en) * | 2015-06-05 | 2015-09-02 | 广东明路电力电子有限公司 | Power resistor of three-dimensional network structure and processing technique of power resistor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110928 Termination date: 20140311 |