CN203690089U - Full-shielding high-voltage isolation type voltage transformer - Google Patents
Full-shielding high-voltage isolation type voltage transformer Download PDFInfo
- Publication number
- CN203690089U CN203690089U CN201320833911.3U CN201320833911U CN203690089U CN 203690089 U CN203690089 U CN 203690089U CN 201320833911 U CN201320833911 U CN 201320833911U CN 203690089 U CN203690089 U CN 203690089U
- Authority
- CN
- China
- Prior art keywords
- flange
- voltage
- full
- high pressure
- shielding electrode
- 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 - Lifetime
Links
- 238000002955 isolation Methods 0.000 title abstract 3
- 238000004804 winding Methods 0.000 claims description 61
- 239000012212 insulator Substances 0.000 claims description 38
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 14
- 229910000889 permalloy Inorganic materials 0.000 claims description 14
- 238000009413 insulation Methods 0.000 claims description 13
- 229920002799 BoPET Polymers 0.000 claims description 10
- 239000004593 Epoxy Substances 0.000 claims description 8
- 239000003292 glue Substances 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 8
- 229920006267 polyester film Polymers 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 7
- 239000011229 interlayer Substances 0.000 claims description 6
- 239000010410 layer Substances 0.000 claims description 6
- 230000007704 transition Effects 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 abstract description 6
- 238000000034 method Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 3
- 230000005684 electric field Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 2
- 230000003746 surface roughness Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Landscapes
- Regulation Of General Use Transformers (AREA)
- Transformers For Measuring Instruments (AREA)
Abstract
The utility model provides a full-shielding high-voltage isolation type voltage transformer which comprises a tubular secondary low-voltage shielding electrode (1) coaxially mounted in an annular primary high-voltage shielding electrode (2), and flanges for respectively fixing the primary high-voltage shielding electrode (2) and the secondary low-voltage shielding electrode (1), wherein the flanges (12 and 23) for fixing the primary high-voltage shielding electrode (2) are arranged on the outer side of the primary high-voltage shielding electrode (2) in a parallel manner; the axial lines of the flanges (3 and 4) for fixing the secondary low-voltage shielding electrode (1) are perpendicularly intersected on the axial line of the secondary low-voltage shielding electrode (1). According to the full-shielding high-voltage isolation type voltage transformer, the accuracy of the voltage transformer is improved, and superposition of secondary voltage can be realized when two single-stage voltage transformers are connected in series, so that a voltage series addition is pushed to perform value transmission to a higher voltage level.
Description
Technical field:
The utility model relates to a kind of instrument transformer, is specifically related to a kind of full-shield high pressure isolating voltage mutual inductor, belongs to instrument voltage transformer technical field.
Background technology:
The transmission of quantity value that adopts voltage mutual inductor serial addition to carry out voltage ratio in China's power-frequency voltage magnitude tracing system is traced to the source, the method is directly connected first and second bucking electrode of two voltage transformers in operating process, require when each screen potential change, can not exert an influence to the error of voltage transformer in checking procedure; But in fact, due to shielding imperfection, in the time that screen potential changes, leakage current flows through excitation winding, has affected the error of voltage transformer, and along with the rising of electric pressure, it is more obvious that capacitive is leaked the impact bringing.
From the current study, standard set-up more than 220kV electric pressure is difficult to re-use Voltage Series addition and carries out the transmission work of value, therefore for use Voltage Series add normal direction more voltage levels carry out transmission of quantity value, with regard to solving the problem of voltage transformer secondary Voltage Series, reduce first and second winding capacitive simultaneously and leak the impact that measure error is caused.
A kind of full-shield high pressure isolating voltage mutual inductor that the utility model provides has been realized two
voltage mutual inductor serial become
tandem standard potential transformer.
Summary of the invention:
The utility model provides a kind of full-shield high pressure isolating voltage mutual inductor, its object is: according to the requirement of voltage mutual inductor serial addition circuit, realize the voltage stack of two voltage transformer first and second windings of series connection, reduce capacitive between first and second winding and reveal the impact that measure error is caused, guarantee that first and second winding error characteristics separately in cascade process remain unchanged, voltage mutual inductor serial addition is applied in the power-frequency voltage ratio standard of voltage levels (220kV～1000kV) more.
The technical solution adopted in the utility model is: a kind of full-shield high pressure isolating voltage mutual inductor, is characterized in that:
Described voltage transformer comprises the tubulose secondary low-voltage bucking electrode (1) being coaxially installed in a high-tension shielding electrode of ring-type (2), the flange of fixing respectively a described high-tension shielding electrode (2) and described secondary low-voltage bucking electrode (1);
Flange (12) be located at a described high-tension shielding electrode (2) outside parallel with flange (23) of a fixing described high-tension shielding electrode (2);
The fixing flange (3) of described secondary low-voltage bucking electrode (1) and the intersect vertical axis of flange (4) are in the axis of described secondary low-voltage bucking electrode (1).
Preferably, described voltage transformer is installed in the middle of the sealing device being made up of cylindrical shell (16), flange (19), flange (20), flange (14), disc insulator (15), disc insulator (21) and housing bottom end cover (18).
Preferably, described cylindrical shell (16) two ends are welded with described flange (19) and described flange (20), between described flange (19) and described flange (14), fix the edge of described disc insulator (15), the edge of described flange (20) fixing pot type insulator (21) and described housing bottom end cover (18).
Preferably, disc insulator (15) is coaxially fixing with flange (12); Disc insulator (21) is coaxially fixing with flange (23).
Preferably, the madial wall of cylindrical shell (16) is arranged with two fixed blocks (17); Described two fixed blocks (17) are by fixing to flange (3) and flange (4).
Preferably, described housing bottom end cover (18) equals cylindrical shell (16) cross section, is highly less than the cylindrical structure of cylindrical shell (16) for cross section, described cylindrical shell (16), described flange (19), described flange (20), described flange (14), described disc insulator (15), described disc insulator (21) and described housing bottom end cover (18) all coaxial install and intersect vertical axis in the axis of a described high-tension shielding electrode (2).
Preferably, a described high-tension shielding electrode (2) surfaces externally and internally is connected by arc surface transition.
Preferably, a described high-tension shielding electrode (2) inside is provided with and the coaxial mounted insulating epoxy pipe of a described high-tension shielding electrode (2) (7); The winding (6) that the surperficial coiling of described insulating epoxy pipe (7) is coaxial with a described high-tension shielding electrode (2); Between a described winding (6), adopt some glue polyester film (5) insulation.
Preferably, a described winding (6) number of turn is 325 circles, point two-layer coiling composition, and interlayer adopts some glue polyester film (5) insulation.
Preferably, described secondary low-voltage bucking electrode (1) inside is provided with and the permalloy iron core (8) of the coaxial mounted cylindrical structure of described secondary low-voltage bucking electrode (1); The surperficial coiling mylar tape of described permalloy iron core (8) (10); The secondary winding (9) that the surperficial coiling of described mylar tape (10) is coaxial with described secondary low-voltage bucking electrode (1).
Preferably, the number of turn of described secondary winding (9) is that 325 circles divide two-layer coiling composition, and interlayer adopts mylar tape (10) insulation.
Preferably, it is semicircle that described permalloy iron core (8) adopts two cross sections and equal-sized permalloy iron core forms spelling, and is then fixed between flange (3) and flange (4).
Preferably, in described sealing device, be filled with SF
6compressed Gas.
Preferably, the axle center of described disc insulator (15) and described disc insulator (21) is respectively equipped with the circular hole (22) that diameter equates with the center-hole diameter of flange (12) and flange (23).
Preferably, a described high-tension shielding electrode (2) is drawn two wiring by the centre bore of flange (12) and the circular hole in disc insulator (15) axle center.
Preferably, between described flange (3) and described flange (4), be provided with a circular hole (13), the dead in line of the axis of circular hole (13) and secondary low-voltage bucking electrode (1), described cylindrical shell (16) outside is provided with patchboard; Described secondary low-voltage bucking electrode (1) is drawn two wiring by circular hole (13), is connected to the patchboard on described cylindrical shell (16) after drawing.
Preferably, the port that a winding (6) is 220kV～1000kV with potential difference respectively with secondary winding (9) is connected.
With immediate technical scheme ratio, the beneficial effects of the utility model are:
(1) full-shield high pressure isolating voltage mutual inductor compact conformation of the present utility model, at the capacitor of the stable performance of input series connection of a winding, with the anti-formation resonance of winding leakage inductance, has improved the accuracy of voltage transformer;
(2) one times winding is arranged on high-tension shielding electrode interior one time, secondary winding is arranged on secondary low-voltage bucking electrode inside, make the potential change of a winding not change the capacitive Leakage Current to secondary winding, thereby the error of voltage transformer is not impacted;
(3) high-tension shielding electrodes and secondary low-voltage bucking electrode are arranged on and are filled with SF
6the sealing metal cylindrical shell inside of Compressed Gas, has guaranteed that by perfect shielding measure two voltage transformers keep original error performance constant in serial addition circuit measuring process;
(4) windings, secondary winding, high-tension shielding electrode and secondary low-voltage bucking electrode are coaxially installed, a high-tension shielding electrode design circlewise, surface roughness is better than 3.2 μ m, space electric field is distributed more even, obtains better insulation property;
(5) one times winding is connected with higher level's voltage transformer; Secondary winding is connected with subordinate voltage transformer, and the stack of secondary voltage can realize two single electrode voltage mutual inductor serials time promotes Voltage Series and adds the electric pressure that normal direction is higher and carry out transmission of quantity value.
Accompanying drawing explanation:
Fig. 1 is contour structures schematic diagram of the present utility model.
Fig. 2 is part section structural representation of the present utility model.
Fig. 3 is single unit system profile of the present utility model.
Fig. 4 is Voltage Series addition principle line map of the present utility model.
Description of symbols in Fig. 1: 1-secondary low-voltage bucking electrode; High-tension shielding electrode of 2-; The flange of the fixing secondary low-voltage bucking electrode of 3-; The flange of the fixing secondary low-voltage bucking electrode of 4-; 12-fixes the flange of a high-tension shielding electrode; What 13-wound the line for bis-times draws circular hole.
Description of symbols in Fig. 2: 5-point glue polyester film; Winding of 6-; 7-insulating epoxy pipe; 8-permalloy iron core; 9-secondary winding; 10-mylar tape; High-tension shielding electrode opening section of 11-.
Description of symbols in Fig. 3: 12-fixes the flange of a high-tension shielding electrode; The flange of 14-fixing pot type insulator; The flange of 19-cylindrical shell one end; 22-once winds the line and draws circular hole; The flange of 15-disc insulator, 16-cylindrical shell, 17-fixed block, the 20-housing other end; 18-housing bottom end cover; 21-disc insulator; 23-fixes the flange of a high-tension shielding electrode.
Description of symbols in Fig. 4: T1-rated primary voltage is
higher level's voltage transformer; T2-rated primary voltage is
subordinate's voltage transformer; T3-rated primary voltage is
full-shield high pressure isolating voltage mutual inductor.
Embodiment:
In order better to understand the utility model, further illustrate content of the present utility model below in conjunction with accompanying drawing example.
As shown in Figure 1:
The utility model provides a kind of full-shield high pressure isolating voltage mutual inductor, it is characterized in that:
Voltage transformer comprises the tubulose secondary low-voltage bucking electrode (1) being coaxially installed in a high-tension shielding electrode of ring-type (2), the flange of fixing respectively a high-tension shielding electrode (2) and secondary low-voltage bucking electrode (1);
Fix flange (12) be located at a high-tension shielding electrode (2) outside parallel with flange (23) of a high-tension shielding electrode (2);
The fixing flange (3) of secondary low-voltage bucking electrode (1) and the intersect vertical axis of flange (4) are in the axis of secondary low-voltage bucking electrode (1);
Between flange (3) and flange (4), be provided with a circular hole (13), the dead in line of the axis of circular hole (13) and secondary low-voltage bucking electrode (1);
A high-tension shielding electrode (2) and secondary low-voltage bucking electrode (1) all adopt aluminium alloy to make.
As shown in Figure 2:
It is entirety processing that a high-tension shielding electrode (2) adds man-hour, welding, later stage manually cuts out a fracture, the permalloy iron core (8) of secondary low-voltage bucking electrode (1) is positioned in the ring of a high-tension shielding electrode (2), the part (11) again this fracture being cut utilizes inner screw crimping mode to install back, forms an entirety; A high-tension shielding electrode (2) surfaces externally and internally is connected by arc surface transition, and chamfering and polishing are all done in all junctions, and surface roughness is better than 3.2 μ m, makes electrode surface Electric Field Distribution more even.
A described high-tension shielding electrode (2) inside is provided with and the coaxial mounted insulating epoxy pipe of a described high-tension shielding electrode (2) (7); The winding (6) that the surperficial coiling of described insulating epoxy pipe (7) is coaxial with a described high-tension shielding electrode (2); Between a described winding (6), adopt some glue polyester film (5) insulation, a described winding (6) and described some glue polyester film (5) form high pressure winding jointly.
A winding (6) shields completely in a high-tension shielding electrode (2) of ring-type, effectively must prevent that the winding (6) with high potential from producing Leakage Current to the secondary winding with electronegative potential (9).
A winding (6) number of turn is 325 circles, and it is that the high strength enamelled wire of 1.35mm divides two-layer coiling composition that a winding (6) is selected diameter, and interlayer adopts a some glue polyester film (5) insulation.
Secondary low-voltage bucking electrode (1) inside is provided with the permalloy iron core (8) with the coaxial mounted cylindrical structure of secondary low-voltage bucking electrode (1); The surperficial coiling mylar tape of permalloy iron core (8) (10); The secondary winding (9) that the surperficial coiling of mylar tape (10) is coaxial with secondary low-voltage bucking electrode (1), shields secondary winding (9) by the secondary low-voltage bucking electrode (1) of tubulose.
The number of turn of secondary winding (9) is 325 circles, and it is that the high strength enamelled wire of 1.0mm divides two-layer coiling composition that secondary winding (9) is selected diameter, and interlayer adopts mylar tape (10) insulation.
It is semicircle that permalloy iron core adopts two cross sections and equal-sized permalloy iron core forms spelling, and is then fixed between the flange of secondary low-voltage bucking electrode.
A winding (6) and secondary winding (9) and bucking electrode thereof are all designed to coaxial configuration, make the space electric field homogenizing as far as possible that distributes, and obtain better insulation property.
As shown in Figure 3:
Voltage transformer is installed in the middle of the sealing device being made up of cylindrical shell (16), flange (19), flange (20), flange (14), disc insulator (15), disc insulator (21) and housing bottom end cover (18), is filled with SF in sealing device
6compressed Gas, makes a described high-tension shielding electrode and the insulation of described secondary low-voltage bucking electrode.
Cylindrical shell (16) two ends are welded with flange (19) and flange (20), the edge of fixing pot type insulator (15), the edge of flange (20) fixing pot type insulator (21) and housing bottom end cover (18) between flange (19) and flange (14).
Disc insulator (15) is coaxially fixing with flange (12); Disc insulator (21) is coaxially fixing with flange (23).
The madial wall of cylindrical shell (16) is arranged with two fixed blocks (17); Two fixed blocks (17) are by fixing to flange (3) and flange (4).
Housing bottom end cover (18) equals cylindrical shell (16) cross section, is highly less than the cylindrical structure of cylindrical shell (16) for cross section, cylindrical shell (16), flange (19), flange (20), flange (14), disc insulator (15), disc insulator (21) and housing bottom end cover (18) all coaxial install and intersect vertical axis in the axis of a high-tension shielding electrode (2).
The axle center of disc insulator (15) and disc insulator (21) is respectively equipped with the circular hole (22) that diameter equates with the center-hole diameter of flange (12) and flange (23).
A high-tension shielding electrode (2) is drawn two wiring by the centre bore of flange (12) and the circular hole in disc insulator (15) axle center.
Between flange (3) and flange (4), be provided with a circular hole (13), the dead in line of the axis of circular hole (13) and secondary low-voltage bucking electrode (1), cylindrical shell (16) outside is provided with patchboard; Secondary low-voltage bucking electrode (1) is drawn two wiring by circular hole (13), is connected to the patchboard on cylindrical shell (16) after drawing.
Cylindrical shell adopts aluminium alloy to make and forms; Disc insulator (15) and disc insulator (21) all adopt silicon dioxide and epoxy material cast to make.
As shown in Figure 4: T1-rated primary voltage is
higher level's voltage transformer; T2-rated primary voltage is
subordinate's voltage transformer; T3-rated primary voltage is
full-shield high pressure isolating voltage mutual inductor.
Higher level's voltage transformer T
1a winding A
1n
1with the voltage transformer T of subordinate
2a winding A
2n
2series connection, a winding AX of composition tandem instrument transformer, voltage
Higher level's secondary winding a
1n
1in parallel with a winding (6) of full-shield high pressure isolating voltage mutual inductor, the secondary winding (9) of full-shield high pressure isolating voltage mutual inductor and the voltage transformer T of subordinate
2secondary winding a
2n
2series connection; Higher level's secondary winding a thus
1n
1by full-shield high pressure isolating voltage mutual inductor T
3secondary winding a with subordinate
2n
2series connection, the secondary winding ax of composition tandem instrument transformer, voltage
the stack of secondary voltage while realizing two single electrode voltage mutual inductor serials, thus advance Voltage Series add normal direction more voltage levels carry out transmission of quantity value.
A winding (6) is connected with the port that secondary winding (9) is 220kV～1000kV with potential difference respectively.
In side circuit for the impact on voltage transformer accuracy of the large leakage inductance amount that reduces to cause due to the insulation distance between first and second winding, at the capacitor of the stable performance of input series connection of a winding (6), with the anti-formation resonance of winding leakage inductance, further improve the accuracy of voltage transformer.
These are only embodiment of the present utility model, be not limited to the utility model, all within spirit of the present utility model and principle, any modification of making, be equal to replacement, improvement etc., within all should being included in the claim scope of the present utility model that application awaits the reply.
Claims (17)
1. a full-shield high pressure isolating voltage mutual inductor, is characterized in that:
Described voltage transformer comprises the tubulose secondary low-voltage bucking electrode (1) being coaxially installed in a high-tension shielding electrode of ring-type (2), the flange of fixing respectively a described high-tension shielding electrode (2) and described secondary low-voltage bucking electrode (1);
Flange (12) be located at a described high-tension shielding electrode (2) outside parallel with flange (23) of a fixing described high-tension shielding electrode (2);
The fixing flange (3) of described secondary low-voltage bucking electrode (1) and the intersect vertical axis of flange (4) are in the axis of described secondary low-voltage bucking electrode (1).
2. a kind of full-shield high pressure isolating voltage mutual inductor as claimed in claim 1, is characterized in that:
Described voltage transformer is installed in the middle of the sealing device being made up of cylindrical shell (16), flange (19), flange (20), flange (14), disc insulator (15), disc insulator (21) and housing bottom end cover (18).
3. a kind of full-shield high pressure isolating voltage mutual inductor as claimed in claim 2, is characterized in that:
Described cylindrical shell (16) two ends are welded with described flange (19) and described flange (20), between described flange (19) and described flange (14), fix the edge of described disc insulator (15), the edge of described flange (20) fixing pot type insulator (21) and described housing bottom end cover (18).
4. a kind of full-shield high pressure isolating voltage mutual inductor as claimed in claim 3, is characterized in that:
Disc insulator (15) is coaxially fixing with flange (12); Disc insulator (21) is coaxially fixing with flange (23).
5. a kind of full-shield high pressure isolating voltage mutual inductor as claimed in claim 2, is characterized in that:
The madial wall of cylindrical shell (16) is arranged with two fixed blocks (17); Described two fixed blocks (17) are by fixing to flange (3) and flange (4).
6. a kind of full-shield high pressure isolating voltage mutual inductor as claimed in claim 2, is characterized in that:
Described housing bottom end cover (18) equals cylindrical shell (16) cross section, is highly less than the cylindrical structure of cylindrical shell (16) for cross section, described cylindrical shell (16), described flange (19), described flange (20), described flange (14), described disc insulator (15), described disc insulator (21) and described housing bottom end cover (18) all coaxial install and intersect vertical axis in the axis of a described high-tension shielding electrode (2).
7. a kind of full-shield high pressure isolating voltage mutual inductor as claimed in claim 1, is characterized in that:
A described high-tension shielding electrode (2) surfaces externally and internally is connected by arc surface transition.
8. a kind of full-shield high pressure isolating voltage mutual inductor as claimed in claim 1, is characterized in that:
A described high-tension shielding electrode (2) inside is provided with and the coaxial mounted insulating epoxy pipe of a described high-tension shielding electrode (2) (7); The winding (6) that the surperficial coiling of described insulating epoxy pipe (7) is coaxial with a described high-tension shielding electrode (2); Between a described winding (6), adopt some glue polyester film (5) insulation.
9. a kind of full-shield high pressure isolating voltage mutual inductor as claimed in claim 8, is characterized in that:
A described winding (6) number of turn is 325 circles, point two-layer coiling composition, and interlayer adopts some glue polyester film (5) insulation.
10. a kind of full-shield high pressure isolating voltage mutual inductor as claimed in claim 1, is characterized in that:
Described secondary low-voltage bucking electrode (1) inside is provided with the permalloy iron core (8) with the coaxial mounted cylindrical structure of described secondary low-voltage bucking electrode (1); The surperficial coiling mylar tape of described permalloy iron core (8) (10); The secondary winding (9) that the surperficial coiling of described mylar tape (10) is coaxial with described secondary low-voltage bucking electrode (1).
11. a kind of full-shield high pressure isolating voltage mutual inductors as claimed in claim 10, is characterized in that:
The number of turn of described secondary winding (9) is that 325 circles divide two-layer coiling composition, and interlayer adopts mylar tape (10) insulation.
12. a kind of full-shield high pressure isolating voltage mutual inductors as claimed in claim 10, is characterized in that:
It is semicircle that described permalloy iron core (8) adopts two cross sections and equal-sized permalloy iron core forms spelling, and is then fixed between flange (3) and flange (4).
13. a kind of full-shield high pressure isolating voltage mutual inductors as claimed in claim 2, is characterized in that:
In described sealing device, be filled with SF6 Compressed Gas.
14. a kind of full-shield high pressure isolating voltage mutual inductors as claimed in claim 2, is characterized in that:
The axle center of described disc insulator (15) and described disc insulator (21) is respectively equipped with the circular hole (22) that diameter equates with the center-hole diameter of flange (12) and flange (23).
15. a kind of full-shield high pressure isolating voltage mutual inductors as claimed in claim 14, is characterized in that:
A high-tension shielding electrode (2) is drawn two wiring by the centre bore of flange (12) and the circular hole in disc insulator (15) axle center.
16. a kind of full-shield high pressure isolating voltage mutual inductors as claimed in claim 2, is characterized in that:
Between flange (3) and flange (4), be provided with a circular hole (13), the dead in line of the axis of circular hole (13) and secondary low-voltage bucking electrode (1), described cylindrical shell (16) outside is provided with patchboard; Described secondary low-voltage bucking electrode (1) is drawn two wiring by circular hole (13), is connected to the patchboard on described cylindrical shell (16) after drawing.
17. a kind of full-shield high pressure isolating voltage mutual inductors as described in claim 9 or 11, is characterized in that:
A winding (6) is connected with the port that secondary winding (9) is 220kV～1000kV with potential difference respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320833911.3U CN203690089U (en) | 2013-12-17 | 2013-12-17 | Full-shielding high-voltage isolation type voltage transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320833911.3U CN203690089U (en) | 2013-12-17 | 2013-12-17 | Full-shielding high-voltage isolation type voltage transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203690089U true CN203690089U (en) | 2014-07-02 |
Family
ID=51011963
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320833911.3U Expired - Lifetime CN203690089U (en) | 2013-12-17 | 2013-12-17 | Full-shielding high-voltage isolation type voltage transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203690089U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103730247A (en) * | 2013-12-17 | 2014-04-16 | 国家电网公司 | Full-shielding high-voltage isolated-type voltage transformer |
| CN104569898A (en) * | 2015-01-04 | 2015-04-29 | 国家电网公司 | Fixing and voltage sharing device for vehicle-mounted standard voltage transformer used for verifying transformer of 500 kV |
| CN109346302A (en) * | 2018-12-03 | 2019-02-15 | 大连北方互感器集团有限公司 | A kind of voltage transformer shielded with high-tension shielding and low pressure |
-
2013
- 2013-12-17 CN CN201320833911.3U patent/CN203690089U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103730247A (en) * | 2013-12-17 | 2014-04-16 | 国家电网公司 | Full-shielding high-voltage isolated-type voltage transformer |
| WO2015090119A1 (en) * | 2013-12-17 | 2015-06-25 | 国家电网公司 | Full-shielding high-voltage isolated-type voltage transformer |
| CN103730247B (en) * | 2013-12-17 | 2016-04-20 | 国家电网公司 | A kind of full-shield high_voltage isolation type voltage transformer |
| CN104569898A (en) * | 2015-01-04 | 2015-04-29 | 国家电网公司 | Fixing and voltage sharing device for vehicle-mounted standard voltage transformer used for verifying transformer of 500 kV |
| CN109346302A (en) * | 2018-12-03 | 2019-02-15 | 大连北方互感器集团有限公司 | A kind of voltage transformer shielded with high-tension shielding and low pressure |
| CN109346302B (en) * | 2018-12-03 | 2023-08-08 | 大连北方互感器集团有限公司 | Voltage transformer with high-voltage shielding and low-voltage shielding |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103730247B (en) | A kind of full-shield high_voltage isolation type voltage transformer | |
| CN203406161U (en) | Hollow coil with closed magnetic circuit and resistance voltage divider combined electronic instrument transformer | |
| CN203690089U (en) | Full-shielding high-voltage isolation type voltage transformer | |
| CN103456473B (en) | A kind of integral type oil-paper bushing | |
| KR101229631B1 (en) | Magnetic shield style transformer | |
| CN103545100A (en) | Voltage transformer | |
| CN101958190B (en) | Shielding and isolating voltage mutual inductor | |
| CN203013493U (en) | Electronic voltage transformer for high-voltage cubicle type gas insulated switchgear | |
| CN107462858A (en) | A kind of voltage transformer magnitude tracing method and device | |
| CN103143870B (en) | A kind of outer support welding tooling of shielding cylinder connection and using method thereof | |
| CN102945739B (en) | Power-frequency single-phase resonant transformer for calibration and boosting of voltage transformer | |
| CN204331013U (en) | A kind of 10kV ~ 35kV high voltage electric energy magnitude tracing standard set-up | |
| CN204067022U (en) | Comprehensive error compensation type instrument transformer | |
| CN201689776U (en) | Shield isolation voltage transformer below 10 kV | |
| CN203406160U (en) | Combined instrument transformer provided with closed magnetic circuit type hollow coil | |
| CN201698884U (en) | Shielded isolation voltage mutual inductor | |
| CN204558218U (en) | A kind of SF6 vacuum on-load operation switch switch core insulation against ground structure | |
| CN202855519U (en) | Power frequency single-phase resonance transformer used for calibrating and boosting voltage of voltage transformer on site | |
| CN206516474U (en) | Current transformer | |
| CN202837419U (en) | Novel SF6-insulated AC high-voltage test transformer apparatus | |
| CN102867636A (en) | Electronic voltage transformer matching with high-voltage GIS | |
| CN205104354U (en) | Mini voltage transformer | |
| CN204834307U (en) | Insulator arrangement of dry -type transformer coil | |
| CN203521146U (en) | Three-phase gas voltage transformer | |
| CN202495328U (en) | Low-voltage adjustable compensating inductor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140702 |