CN201489081U - Voltage shifting device for power frequency withstand test equipment - Google Patents
Voltage shifting device for power frequency withstand test equipment Download PDFInfo
- Publication number
- CN201489081U CN201489081U CN2009201508241U CN200920150824U CN201489081U CN 201489081 U CN201489081 U CN 201489081U CN 2009201508241 U CN2009201508241 U CN 2009201508241U CN 200920150824 U CN200920150824 U CN 200920150824U CN 201489081 U CN201489081 U CN 201489081U
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- voltage
- voltage coil
- power frequency
- coil
- test equipment
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- Testing Relating To Insulation (AREA)
Abstract
The utility model discloses a voltage shifting device for power frequency withstand test equipment. The voltage shifting device comprises an iron core, a mandrel, a low-voltage coil and a high-voltage coil; wherein the iron core is rectangular, the mandrel is connected on the iron core, the low-voltage coil is winded on the mandrel, and the high-voltage coil is winded on the low-voltage coil. The voltage shifting device is characterized in that the high-voltage coil adopts single-stage winding, and the number of turns of the high-voltage coil is larger in the middle and smaller on the two sides, forming a tower shape. Further, the layers of the high-voltage coil are isolated through double-layer polyester film, and SF6 gas is filled between two layers of polyester film. The structure has the advantages that by adopting the structure, impact can be effectively prevented, and the insulation performance can be improved, so that the test equipment can be directly abutted with products to perform on-site power frequency withstand tests and partial discharge tests.
Description
Technical field
The utility model relates to the power frequency withstand test equipment that a kind of testing high voltage equipment is used, and is specifically related to a kind of can directly the butt joint with product, carries out the voltage changer of the power frequency withstand test equipment of on-the-spot industrial frequency withstand voltage test and local discharge test.
Background technology
The voltage changer of power frequency withstand test equipment in the market, the tandem formula that is wound as of its high-tension coil, this structure impact resistance is poor, during detection, easily equipment itself is caused damage; In addition, the isolation between its coil layer and the layer adopts grease to isolate, and the insulating property of this isolation neither be very desirable.
The utility model content
Main task of the present utility model is to provide a kind of voltage changer of power frequency withstand test equipment, be specifically related to a kind of can directly the butt joint, carry out the voltage changer of the power frequency withstand test equipment of on-the-spot industrial frequency withstand voltage test and local discharge test with product.
In order to solve above technical matters, the voltage changer of a kind of power frequency withstand test equipment of the present utility model, constitute by iron core, plug, low-voltage coil, high-tension coil, described iron core is a hollow, plug is connected on the iron core, and low-voltage coil is on plug, and high-tension coil is on low-voltage coil, it is characterized in that: described high-tension coil is that single stage type is reeled, and the number of turns of high-tension coil is the few pagoda shape in middle many both sides.
Further, isolate with the double-layer polyester film between the layer of described high-tension coil and the layer, between the two layers polyester film, be filled with SF6 gas.The advantage of above structure is: the utility model high-tension coil adopts single stage type to reel, and effectively shock resistance during detection, is avoided equipment itself is caused damage; In addition, the isolation between its coil layer and the layer adopts mylar and SF6 gas to isolate, and the insulating property of this isolation improve a lot than existing grease isolation; Vertical above-mentioned advantage makes this checkout equipment directly to dock with product, carries out on-the-spot industrial frequency withstand voltage test and local discharge test.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the structural representation of the utility model high-tension coil;
Fig. 3 is the partial enlarged drawing of the utility model high-tension coil.
Embodiment
As shown in Figure 1, hollow iron core 1 is housed in power frequency withstand test equipment, unshakable in one's determination 1 is as a whole with plug 2, adopts the flat type copper wire multiply and around low-voltage coil 3, be wound with high-tension coil 4 on low-voltage coil 3 on plug 2.
As shown in Figure 2, described high-tension coil 4 is that single stage type reels, during coiling, the number of plies in the middle of the both sides number of plies is less than, whole winding be shaped as pagoda shape.
Because high-tension coil 4 has higher voltage, therefore, insulation is indispensable.The insulation of the utility model high-tension coil 4 is as shown in Figure 3: the layer of high-tension coil 4 with layer between establish double-layer polyester film 5, between two layers polyester film 5, fill SF6 gas 7, form separation layer by mylar 5 and SF6 gas 7, reach good insulation effect between 4 layers of high-tension coils and the layer, thereby make the utility model can accomplish and directly to dock with product, carry out on-the-spot industrial frequency withstand voltage test and local discharge test.
Claims (2)
1. the voltage changer of a power frequency withstand test equipment, constitute by iron core, plug, low-voltage coil, high-tension coil, described iron core is a hollow, plug is connected on the iron core, low-voltage coil is on plug, high-tension coil is characterized in that on low-voltage coil: described high-tension coil is that single stage type is reeled, and the number of turns of high-tension coil is the few pagoda shape in middle many both sides.
2. the voltage changer of a kind of power frequency withstand test equipment according to claim 1 is characterized in that: isolate with the double-layer polyester film between the layer of described high-tension coil and the layer, be filled with SF6 gas between the two layers polyester film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201508241U CN201489081U (en) | 2009-04-28 | 2009-04-28 | Voltage shifting device for power frequency withstand test equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201508241U CN201489081U (en) | 2009-04-28 | 2009-04-28 | Voltage shifting device for power frequency withstand test equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201489081U true CN201489081U (en) | 2010-05-26 |
Family
ID=42427953
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201508241U Expired - Fee Related CN201489081U (en) | 2009-04-28 | 2009-04-28 | Voltage shifting device for power frequency withstand test equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201489081U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110534311A (en) * | 2019-08-21 | 2019-12-03 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | A kind of magnetic control resonance transformer winding iron core structure |
-
2009
- 2009-04-28 CN CN2009201508241U patent/CN201489081U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110534311A (en) * | 2019-08-21 | 2019-12-03 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | A kind of magnetic control resonance transformer winding iron core structure |
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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: 20100526 Termination date: 20160428 |