CN204927009U - Single circle structure mutual -inductor of low office value of putting - Google Patents
Single circle structure mutual -inductor of low office value of putting Download PDFInfo
- Publication number
- CN204927009U CN204927009U CN201520586163.2U CN201520586163U CN204927009U CN 204927009 U CN204927009 U CN 204927009U CN 201520586163 U CN201520586163 U CN 201520586163U CN 204927009 U CN204927009 U CN 204927009U
- Authority
- CN
- China
- Prior art keywords
- terminal
- mutual
- value
- inductor
- instrument transformer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
The utility model relates to a single circle structure mutual -inductor of low office value of putting, below including semiconductor crepe paper 2, P1 terminal 3, conducting rod 4, mutual -inductor coil 6, a terminal of P2 terminal 7, characterized by is equipped with conducting rod 4, and the inboard of pole 4 is equipped with C shape semiconductor cardboard 5, C shape semiconductor cardboard 5 is fixed on conducting rod 4 through semiconductor crepe paper 2, mutual -inductor coil 6 embolias in the mutual -inductor primary winding. The advantage: make whole mutual -inductor primary winding form an even electric field under the high voltage, each position electric field field intensity distribution of mutual -inductor ware body is even, and the field intensity is excessive mild, the undistorted condition of field intensity. Measure its office during the value of putting under the test voltage state, its apparent volume of discharging is less, innings value of putting can reduce the mutual -inductor under the high voltage state inside.
Description
Technical field
The utility model relates to the single turn structure instrument transformer that value is put in a kind of low office, belong to instrument transformer technical field.
Background technology
In instrument transformer production and use procedure, the quality that office puts not only has reacted the quality of instrument transformer interior quality, more involves the useful life of instrument transformer, so mutual inductance general ability problem of putting is the problem that instrument transformer manufacturer and user compare concern always.Along with the development of technology, many instrument transformers can both reach lower office and put value, but still have the mutual inductance general ability of some structures to put value and there is certain problem, instrument transformer as some single turn structures is put the high experimental tests current political situation to put value higher carrying out office, user's requirement can not be met, sometimes even can scrap because of can not GB be met, not only waste material, make also can not be guaranteed the delivery date of product simultaneously.
Existing single turn instrument transformer structure, this kind of structure only to instrument transformer terminal (by P1 terminal 3, P2 terminal 7 is formed) and a winding forming of conducting rod 4 to do electric fields uniform coated, any shielding or electric field treatment measure is not done between P1 outlet terminal 3 and P2 outlet terminal 7, under action of high voltage, one time winding will there will be Electric Field Distribution inequality, especially there is larger distortion along with the sudden change of medium in electric field between two outlet terminals, also there is the unfavorable conditions such as most advanced and sophisticated simultaneously, when a terminal applies voltage, electric interpolar discharge will be there is because of the distortion of the uneven of electric field and electric field near a terminal, creeping discharge, the multiple discharge scenario such as point discharge.Under test voltage state, measure its office when putting value, its Apparent discharge magnitude is comparatively large, after repeatedly processing, gets rid of surface and waits and still can not reduce its office during other factors and put value, as shown in Figure 3 instrument transformer.
Summary of the invention
The utility model proposes the single turn structure instrument transformer that value is put in a kind of low office, its object is intended to the above-mentioned defect overcome existing for prior art, and the quality that raising office puts, meets user's requirement.
Technical solution of the present utility model: the single turn structure instrument transformer of value is put in low office, comprise semiconductor crimped paper 2, P1 terminal 3, conducting rod 4, mutual inductor coil 6, P2 terminal 7, it is characterized in that the below of a terminal is provided with conducting rod 4, the inner side of electric pole 4 is provided with C shape semiconductor cardboard 5; C shape semiconductor cardboard 5 is fixed on conducting rod 4 by semiconductor crimped paper 2; Mutual inductor coil 6 is inserted in instrument transformer winding.
Advantage of the present utility model: make whole instrument transformer winding form a uniform electric field under high voltages, instrument transformer device body each position electric field strength is evenly distributed, field intensity is excessively mild, situation that field intensity is undistorted.Under test voltage state, measure its office when putting value, its Apparent discharge magnitude is less, and value is put in the office that can reduce instrument transformer inside under high-voltage state.
Accompanying drawing explanation
Fig. 1 is the concise and to the point construction drawing of semiconductor cardboard;
Fig. 2 is the structural representation that the single turn structure instrument transformer of value is put in low office;
Fig. 3 original single turn instrument transformer structural representation.
In figure 1 is hard insulating board, 2 be semiconductor crimped paper, 3 are P1 terminals, 4 are conducting rods, 5 are C type semiconductor cardboards, 6 are mutual inductor coils, 7 is P2 terminals.
Embodiment
As shown in drawings, the single turn structure instrument transformer of value is put in low office, comprises semiconductor crimped paper 2, P1 terminal 3, conducting rod 4, mutual inductor coil 6, P2 terminal 7, it is characterized in that the below of a terminal is provided with conducting rod 4, and the inner side of electric pole 4 is provided with C shape semiconductor cardboard 5; C shape semiconductor cardboard 5 is fixed on conducting rod 4 by semiconductor crimped paper 2; Mutual inductor coil 6 is inserted in instrument transformer winding.
A described terminal is made up of P1 outlet terminal 3 and P2 outlet terminal 7;
Described C shape semiconductor cardboard 5 is entwined by hard insulating board 1, semiconductor crimped paper 2, and the width of described hard insulating board 1 is consistent with a termination width;
Described P1 terminal 3 and P2 terminal 7 weld with conducting rod 4;
Described instrument transformer winding is made up of P1 terminal 3, P2 terminal 7, conducting rod 4;
The manufacture method of the single turn structure instrument transformer of value is put in low office, comprises the steps:
(1) make C type semiconductor cardboard 5, comprise,
1) first semiconductor crimped paper 2 is wrapped on hard insulating board 1 with the canoe of half lap one deck;
2) ensure that whole hard insulating board 1 is covered by semiconductor crimped paper 2 when being wound around;
3) width of hard insulating board 1 is consistent with a termination width, and stand-by after completing, one time terminal comprises P1 outlet terminal and P2 outlet terminal,
4) instrument transformer P1 terminal 3 and P2 terminal 7 are welded with conducting rod 4, be inserted in by mutual inductor coil 6 in instrument transformer winding after completing welding, instrument transformer winding is made up of P1 terminal 3, P2 terminal 7, conducting rod 4; As shown in Figure 1;
(2) first integral coating is carried out with semiconductor crimped paper 2 pairs of instrument transformers terminal and conducting rod 4;
(3) the C type semiconductor cardboard 5 after completing is placed the back side of instrument transformer P1 terminal 3 and P2 terminal 7;
(4) C type semiconductor cardboard 5 is fixed on the back side of P1 terminal 3 and P2 terminal 7;
(5) with semiconductor crimped paper 2, C type semiconductor cardboard 5 and a winding of instrument transformer are done integral coating again;
(6) after completing above-mentioned steps, C type semiconductor cardboard 5 and instrument transformer winding form a uniform electric field under high voltages, and instrument transformer device body each position electric field strength is evenly distributed, and field intensity is excessively mild, simultaneously the undistorted situation of field intensity.Under test voltage state, measure its office when putting value, its Apparent discharge magnitude is less, as shown in Figure 2.
Concrete case study on implementation: make 5 35kV current transformers by Fig. 2 new construction and carry out local discharge test, during local discharge test, high voltage is applied to P1 terminal 3 or P2 terminal 7, the outlet terminal of mutual inductor coil 6 connects earth connection, test by GB partial discharge program, power-frequency voltage to instrument transformer during rated voltage is applied to instrument transformer terminal 3 or 7 and does not occur visual partial discharge situation, continue to be applied to 1.5 times of rated voltages to start to occur electric discharge, continue to boost to specified industrial frequency withstand voltage 80% keeps 60S, start step-down, its Apparent discharge magnitude is detected when being depressurized to 1.2Um/ √ 3 voltage, its result is 1-5pC, be better than GB.
This current transformer new construction of experiment results proved is far superior to old structure in partial discharge performance.
Claims (6)
1. the single turn structure instrument transformer of value is put in low office, comprises semiconductor crimped paper, P1 terminal, conducting rod, mutual inductor coil, P2 terminal, it is characterized in that the below of a terminal is provided with conducting rod, and the inner side of electric pole is provided with C shape semiconductor cardboard; C shape semiconductor cardboard is fixed on conducting rod by semiconductor crimped paper; Mutual inductor coil is inserted in instrument transformer winding.
2. the single turn structure instrument transformer of value is put in low office according to claim 1, it is characterized in that a described terminal is made up of P1 outlet terminal and P2 outlet terminal.
3. the single turn structure instrument transformer of value is put in low office according to claim 1, it is characterized in that described C shape semiconductor cardboard is entwined by hard insulating board, semiconductor crimped paper.
4. the single turn structure instrument transformer of value is put in low office according to claim 3, it is characterized in that the width of described hard insulating board is consistent with a termination width.
5. the single turn structure instrument transformer of value is put in low office according to claim 2, it is characterized in that described P1 terminal and P2 terminal weld with conducting rod.
6. the single turn structure instrument transformer of value is put in low office according to claim 1, it is characterized in that described instrument transformer winding is made up of P1 terminal, P2 terminal, conducting rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520586163.2U CN204927009U (en) | 2015-08-06 | 2015-08-06 | Single circle structure mutual -inductor of low office value of putting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520586163.2U CN204927009U (en) | 2015-08-06 | 2015-08-06 | Single circle structure mutual -inductor of low office value of putting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204927009U true CN204927009U (en) | 2015-12-30 |
Family
ID=54976117
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520586163.2U Expired - Fee Related CN204927009U (en) | 2015-08-06 | 2015-08-06 | Single circle structure mutual -inductor of low office value of putting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204927009U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104992828A (en) * | 2015-08-06 | 2015-10-21 | 河南森源电气股份有限公司 | Low-partial-discharge-value single-structure-based mutual inductor and manufacturing method thereof |
| CN108461267A (en) * | 2018-03-15 | 2018-08-28 | 大连北方互感器集团有限公司 | A kind of current transformer with primary coil high-tension shielding |
-
2015
- 2015-08-06 CN CN201520586163.2U patent/CN204927009U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104992828A (en) * | 2015-08-06 | 2015-10-21 | 河南森源电气股份有限公司 | Low-partial-discharge-value single-structure-based mutual inductor and manufacturing method thereof |
| CN108461267A (en) * | 2018-03-15 | 2018-08-28 | 大连北方互感器集团有限公司 | A kind of current transformer with primary coil high-tension shielding |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204927009U (en) | Single circle structure mutual -inductor of low office value of putting | |
| CN103503091A (en) | Continuously transposed conductor | |
| CN109767897A (en) | Voltage transformer coil first winding and its winding method | |
| CN106384658B (en) | A kind of oil-immersed inverted current transformer major insulation wraps up coupling method | |
| CN103513171A (en) | Power-frequency voltage-withstand testing equipment and method for composite post insulator | |
| CN104992828A (en) | Low-partial-discharge-value single-structure-based mutual inductor and manufacturing method thereof | |
| CN202121767U (en) | Large power voice coil | |
| CN203551730U (en) | A composite post insulator power-frequency voltage-withstand testing device | |
| CN105074845A (en) | Oil-filled transformer | |
| CN102360797B (en) | Radial double split foil winding and winding method thereof | |
| CN106771813A (en) | A kind of Tesla transformer secondary coils break-make measuring method | |
| CN203466055U (en) | Compensated current transformer | |
| CN203225166U (en) | Main insulation structure of 10kV transformer | |
| CN202650805U (en) | Low-voltage coil of three-voltage dry-type transformer | |
| CN211858365U (en) | Primary coil shielding structure of voltage transformer | |
| CN201622936U (en) | DC support filter capacitor for automobile | |
| CN203491041U (en) | Inductor | |
| CN201910312U (en) | Novel intermediate voltage transformer | |
| CN204289044U (en) | A kind of coil of transformer shields indirectly | |
| CN110060847A (en) | A kind of anti-sudden short circuit amorphous alloy oil immersion type full-enclosed distribution transformer | |
| CN110265212A (en) | A kind of coil assembly and production technology of current transformer | |
| CN202120731U (en) | Radial double-splitting foil coil | |
| CN209328649U (en) | A kind of high-impedance transformer | |
| CN204792358U (en) | Take transformer of soft square ring | |
| CN102708949B (en) | Conductor composited in radially and axially parallel way for three times and processing method thereof |
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: 20151230 Termination date: 20190806 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |