CN107731488B - Multisection voltage transformer convenient to adjust error - Google Patents
Multisection voltage transformer convenient to adjust error Download PDFInfo
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- CN107731488B CN107731488B CN201711106982.2A CN201711106982A CN107731488B CN 107731488 B CN107731488 B CN 107731488B CN 201711106982 A CN201711106982 A CN 201711106982A CN 107731488 B CN107731488 B CN 107731488B
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- capacitive voltage
- voltage divider
- diameter
- capacitive
- oil tank
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- 239000003990 capacitor Substances 0.000 claims abstract description 33
- 238000007789 sealing Methods 0.000 claims description 10
- 230000001105 regulatory effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/29—Terminals; Tapping arrangements for signal inductances
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/40—Structural association with built-in electric component, e.g. fuse
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/20—Instruments transformers
- H01F38/22—Instruments transformers for single phase ac
- H01F38/24—Voltage transformers
- H01F38/26—Constructions
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Housings And Mounting Of Transformers (AREA)
Abstract
The invention discloses a multisection voltage transformer convenient for error adjustment, which comprises a capacitor and an electromagnetic device which are connected through a connecting wire, wherein the capacitor comprises a plurality of sections of capacitive voltage dividers with different diameters, a first equalizing ring, a second equalizing ring and a base; the multiple sections of capacitive voltage dividers are sequentially connected in series from small to large in diameter to form a capacitive voltage divider group; the maximum diameter end of the capacitive voltage divider group is fixedly arranged on the base; the first equalizing ring is arranged at the diameter minimum end of the capacitive voltage divider group, and the second equalizing ring is arranged at the joint of the capacitive voltage divider group and the base; the electromagnetic device comprises an oil tank and an error adjusting terminal box arranged outside any side wall of the oil tank, and a ratio difference adjusting terminal plate and an angle difference adjusting terminal plate are arranged in the error adjusting terminal box. The invention has the advantages of stable structure, easy assembly and convenient debugging.
Description
Technical Field
The invention relates to a voltage transformer, in particular to a multisection voltage transformer convenient for error adjustment.
Background
The capacitive voltage transformer is divided by a series capacitor, then is reduced and isolated by an electromagnetic transformer, and is used as a voltage transformer for a meter, relay protection and the like, and the capacitive voltage transformer can also couple carrier frequency to a power transmission line for long-distance communication, remote measurement, selective line high-frequency protection, remote control, tele-typing and the like. The capacitor and the electromagnetic device of the conventional capacitive voltage transformer are integrated, and the capacitor is disposed at the upper side of the electromagnetic device. Recently, a split type voltage transformer has been developed, in which a capacitor and an electromagnetic device are separately provided and connected by a connection wire. However, the mutual inductor with the multi-section capacitive voltage divider is not present, and the error adjustment of the traditional electromagnetic device is inconvenient, which causes the defects of high manufacturing cost and high maintenance cost of the mutual inductor, so that improvement is necessary.
Disclosure of Invention
In order to solve the technical problems, the invention provides a multisection voltage transformer which is convenient for adjusting errors, and the multisection voltage transformer comprises a capacitor and an electromagnetic device, wherein the capacitor is connected with the electromagnetic device through a connecting wire;
the capacitor comprises a plurality of sections of capacitive voltage dividers with different diameters, a first equalizing ring, a second equalizing ring and a base; the multiple sections of capacitive voltage dividers are sequentially connected in series from small to large in diameter to form a capacitive voltage divider group; the maximum diameter end of the capacitive voltage divider group is fixedly arranged on the base; the first equalizing ring is arranged at the diameter minimum end of the capacitive voltage divider group, and the second equalizing ring is arranged at the joint of the capacitive voltage divider group and the base;
the electromagnetic device comprises an oil tank and an error adjusting terminal box arranged outside any side wall of the oil tank, wherein a comparison difference adjusting terminal plate and an angle difference adjusting terminal plate are arranged in the error adjusting terminal box, and comparison difference error adjustment and angle difference error adjustment can be carried out on the electromagnetic device outside the oil tank.
Further, a sealing plate and a disposable connecting terminal are arranged at the smallest diameter end of the capacitive voltage divider group, and a sealing ring is arranged between the sealing plate and the smallest diameter end of the capacitive voltage divider group.
Further, a medium-voltage wiring terminal is arranged between the capacitive voltage divider group and the base.
Further, the capacitive voltage divider comprises a first capacitive voltage divider, a second capacitive voltage divider, a third capacitive voltage divider, a fourth capacitive voltage divider and a fifth capacitive voltage divider; the first to fifth capacitive voltage dividers are sequentially connected in series through a connecting piece to form a capacitive voltage divider group.
Further, the diameter of the first capacitive voltage divider is equal to the diameter of the second capacitive voltage divider, the diameter of the fourth capacitive voltage divider is equal to the diameter of the fifth capacitive voltage divider, one end of the third capacitive voltage divider is equal to the second capacitive voltage divider, and the other end of the third capacitive voltage divider is equal to the fourth capacitive voltage divider.
Further, the capacitive voltage divider comprises an insulating sleeve, a capacitor and an expander, wherein the capacitor is arranged in the insulating sleeve, and the expander is arranged on one side of the insulating sleeve.
Further, a capacitor medium voltage terminal is arranged on any side wall of the base.
Further, the electromagnetic device further comprises an intermediate transformer, a compensating reactor, a damper and a secondary junction box; the intermediate transformer, the compensating reactor and the damper are arranged in the oil tank shell, and the secondary junction box is arranged outside any side wall of the oil tank shell; the compensating reactor is connected with the error adjusting terminal box, and the intermediate transformer is connected with the secondary junction box.
Further, the tail end of the primary coil is connected with the head section of the main coil of the compensation reactor, and then the tap coil of the compensation reactor and the tap coil of the intermediate transformer are sequentially connected, so that the tap coil is in low potential.
Further, an electromagnetic device medium-voltage terminal is arranged on the side wall of the oil tank shell, and the intermediate transformer is further connected with the electromagnetic device medium-voltage terminal.
Further, the capacitor medium voltage terminal and the electromagnetic device medium voltage terminal are connected with the capacitor and the electromagnetic device through connecting wires.
Further, the oil tank shell is further provided with an oil meter and an oil drain valve, the oil meter is arranged at the top end of any side wall of the oil tank shell, and the oil drain valve is arranged at the bottom end of any side wall of the oil tank shell.
Further, through holes are formed in four corners of the bottom end of the oil tank shell and are used for fixedly mounting the oil tank.
The capacitor and the electromagnetic unit of the mutual inductor are separated and are connected through respective medium voltage terminals in operation. The capacitor is multi-section, the diameters of the multi-section capacitor are sequentially reduced from bottom to top, and the structure is stable; the electromagnetic device is provided with the external error adjusting terminal box, and manual debugging can be facilitated during equipment debugging. Therefore, the invention has the advantages of stable structure, easy assembly and convenient debugging.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions and advantages of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are only some embodiments of the invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the composition of a voltage transformer according to the present invention;
FIG. 2 is an A-direction view of the compositional schematic of FIG. 1 with the equalizing ring removed;
FIG. 3 is a schematic diagram of the structure of a capacitor in the transformer of the present invention;
fig. 4 is a front view of an electromagnetic device in the transformer according to the present invention;
fig. 5 is a top view of an electromagnetic device in the transformer of the present invention;
fig. 6 is a left side view of an electromagnetic device in the transformer of the present invention;
fig. 7 is a right side view of an electromagnetic device in the transformer of the present invention.
Wherein, the reference numerals in the figures are as follows: 1-a first capacitive voltage divider; 2-a second capacitive voltage divider; 201-an expander; 202-insulating tube sleeve; 203-capacitance; 3-a third capacitive voltage divider; 4-fourth capacitive voltage divider; 5-a fifth capacitive voltage divider; 6, a base; 7-a first equalizing ring; 8-a second equalizing ring; 9-sealing plates; 10-medium voltage wiring terminals; 11-a capacitor medium voltage terminal; 12-an oil tank shell; 13-an error adjustment terminal box; 131-a differential adjustment terminal plate; 132-angle difference adjusting terminal plates; 14-a secondary junction box; 15-an electromagnetic medium voltage terminal; 16-a damper; 17-compensating reactors; 18-an intermediate transformer; 19-oil meter; 20-oil drain valve.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings, for the purpose of making the objects, technical solutions and advantages of the present invention more apparent. It will be apparent that the described embodiments are merely one embodiment of the invention, and not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic may be included in at least one implementation of the invention. In the description of the present invention, it should be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or number of technical features indicated. Thus, a feature defining "a first" or "a second" may include one or more of the feature, either explicitly or implicitly. Moreover, the terms "first," "second," and the like, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise described herein.
Examples:
as shown in fig. 1 to 7, the present embodiment provides a multisection voltage transformer for facilitating error adjustment, comprising a capacitor and an electromagnetic device, the capacitor and the electromagnetic device being connected by a connecting wire,
the capacitor comprises a plurality of sections of capacitive voltage dividers with different diameters, a first equalizing ring 7, a second equalizing ring 8 and a base 6; the multiple sections of capacitive voltage dividers are sequentially connected in series from small to large in diameter to form a capacitive voltage divider group; the maximum diameter end of the capacitive voltage divider group is fixedly arranged on the base 6; the first equalizing ring 7 is arranged at the diameter minimum end of the capacitive voltage divider group, and the second equalizing ring 8 is arranged at the joint of the capacitive voltage divider group and the base 6;
the electromagnetic device comprises an oil tank and an error adjusting terminal box 13 arranged outside any side wall of the oil tank, and a comparison difference adjusting terminal plate 131 and an angle difference adjusting terminal plate 132 are arranged in the error adjusting terminal box 13, so that the electromagnetic device can be subjected to comparison difference error adjustment and angle difference error adjustment outside the oil tank.
Further, a sealing plate 9 and a disposable connecting terminal are arranged at the smallest diameter end of the capacitive voltage divider group, and a sealing ring is arranged between the sealing plate 9 and the smallest diameter end of the capacitive voltage divider group.
Further, a medium voltage connection terminal 10 is arranged between the capacitive voltage divider group and the base 6.
Further, the capacitive voltage divider comprises a first capacitive voltage divider 1, a second capacitive voltage divider 2, a third capacitive voltage divider 3, a fourth capacitive voltage divider 4 and a fifth capacitive voltage divider 5; the first to fifth capacitive voltage dividers are sequentially connected in series to form a capacitive voltage divider group.
Further, the diameter of the first capacitive voltage divider 1 is equal to the diameter of the second capacitive voltage divider 2, the diameter of the fourth capacitive voltage divider 4 is equal to the diameter of the fifth capacitive voltage divider 5, one end of the third capacitive voltage divider 3 is equal to the second capacitive voltage divider 2, and the other end is equal to the fourth capacitive voltage divider 4.
Further, the capacitive voltage divider comprises an expander 201, an insulating sleeve 202 and a capacitor 203, wherein the capacitor 203 is arranged in the insulating sleeve 202, and the expander 201 is arranged on one side of the insulating sleeve 202.
Further, a capacitor medium voltage terminal 11 is arranged on any side wall of the base 6.
Further, the electromagnetic device further includes an intermediate transformer 18, a compensation reactor 17, a damper 16, and a secondary junction box 14; the intermediate transformer 18, the compensating reactor 17 and the damper 16 are arranged in the oil tank shell 12, and the secondary junction box 14 is arranged outside any side wall of the oil tank shell 12; the compensation reactor 17 is connected to the error adjustment terminal box 13, and the intermediate transformer 18 is connected to the secondary terminal box 14.
Further, the tail end of the primary coil is connected with the head section of the main coil of the compensation reactor 17, and then the tap coil of the compensation reactor 17 and the tap coil of the intermediate transformer 18 are sequentially connected, so that the tap coil can be at a low potential.
Further, an electromagnetic medium voltage terminal 15 is provided on a side wall of the oil tank case 12, and the intermediate transformer 18 is further connected to the electromagnetic medium voltage terminal 15.
Further, the capacitor medium voltage terminal 11 and the electromagnetic medium voltage terminal 15 connect the capacitor and the electromagnetic device through a connection wire.
Further, the oil tank shell 12 is further provided with an oil gauge 19 and an oil drain valve 20, the oil gauge 19 is disposed at the top end of any side wall of the oil tank shell 12, and the oil drain valve 20 is disposed at the bottom end of any side wall of the oil tank shell 12.
While the foregoing is directed to the preferred embodiments of the present invention, it will be appreciated by those skilled in the art that changes and modifications may be made without departing from the principles of the invention, such changes and modifications are also intended to be within the scope of the invention.
Claims (7)
1. The multisection voltage transformer convenient for error adjustment comprises a capacitor and an electromagnetic device, wherein the capacitor and the electromagnetic device are connected through a connecting wire,
the capacitor comprises a plurality of sections of capacitive voltage dividers with different diameters, a first equalizing ring (7), a second equalizing ring (8) and a base (6); the capacitive voltage dividers with the multiple sections and the incomplete same diameter are sequentially connected in series from small to large according to the diameters to form a capacitive voltage divider group; the diameter maximum end of the capacitive voltage divider group is fixedly arranged on the base (6); the first equalizing ring (7) is arranged at the diameter minimum end of the capacitive voltage divider group, and the second equalizing ring (8) is arranged at the joint of the capacitive voltage divider group and the base (6);
the electromagnetic device comprises an oil tank and an error adjusting terminal box (13) arranged outside any side wall of the oil tank, wherein a ratio difference adjusting terminal plate (131) and an angle difference adjusting terminal plate (132) are arranged in the error adjusting terminal box (13), and the ratio difference error adjustment and the angle difference error adjustment of the electromagnetic device can be carried out outside the oil tank;
the capacitive voltage divider comprises a first capacitive voltage divider (1), a second capacitive voltage divider (2), a third capacitive voltage divider (3), a fourth capacitive voltage divider (4) and a fifth capacitive voltage divider (5); the first to fifth capacitive voltage dividers are sequentially connected in series to form a capacitive voltage divider group;
the diameter of the first capacitive voltage divider (1) is equal to the diameter of the second capacitive voltage divider (2), the diameter of the fourth capacitive voltage divider (4) is equal to the diameter of the fifth capacitive voltage divider (5), one end of the third capacitive voltage divider (3) is equal to the diameter of the second capacitive voltage divider (2), and the other end of the third capacitive voltage divider is equal to the diameter of the fourth capacitive voltage divider (4);
the electromagnetic device further comprises an intermediate transformer (18), a compensating reactor (17), a damper (16) and a secondary junction box (14); the intermediate transformer (18), the compensating reactor (17) and the damper (16) are arranged in the oil tank shell (12), and the secondary junction box (14) is arranged outside any side wall of the oil tank shell (12); the compensation reactor (17) is connected with the error regulating terminal box (13), and the intermediate transformer (18) is connected with the secondary junction box (14).
2. The multi-section voltage transformer convenient for error adjustment according to claim 1, wherein a sealing plate (9) and a disposable connecting terminal are arranged at the smallest diameter end of the capacitive voltage divider group, and a sealing ring is arranged between the sealing plate (9) and the smallest diameter end of the capacitive voltage divider group.
3. A multisection voltage transformer for facilitating error adjustment according to claim 1 or 2, characterized in that a medium voltage connection terminal (10) is provided between the capacitive voltage divider group and the base (6).
4. The multi-section voltage transformer convenient for error adjustment according to claim 1, wherein a capacitor medium voltage terminal (11) is arranged on any side wall of the base (6).
5. The multisection voltage transformer for facilitating error adjustment according to claim 4, wherein an electromagnetic medium voltage terminal (15) is provided on a side wall of the tank case (12), and the intermediate transformer (18) is further connected to the electromagnetic medium voltage terminal (15).
6. A multisection voltage transformer facilitating error adjustment according to claim 5, characterized in that the capacitor medium voltage terminal (11) and the electromagnetic medium voltage terminal (15) connect the capacitor and the electromagnetic device by means of a connecting wire.
7. The multisection voltage transformer convenient for error adjustment according to claim 1, wherein an oil meter (19) and an oil drain valve (20) are further arranged on the oil tank shell (12), the oil meter (19) is arranged at the top end of any side wall of the oil tank shell (12), and the oil drain valve (20) is arranged at the bottom end of any side wall of the oil tank shell (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711106982.2A CN107731488B (en) | 2017-11-10 | 2017-11-10 | Multisection voltage transformer convenient to adjust error |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711106982.2A CN107731488B (en) | 2017-11-10 | 2017-11-10 | Multisection voltage transformer convenient to adjust error |
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| Publication Number | Publication Date |
|---|---|
| CN107731488A CN107731488A (en) | 2018-02-23 |
| CN107731488B true CN107731488B (en) | 2024-02-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711106982.2A Active CN107731488B (en) | 2017-11-10 | 2017-11-10 | Multisection voltage transformer convenient to adjust error |
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003059733A (en) * | 2001-08-09 | 2003-02-28 | Nissin Electric Co Ltd | Error adjusting device for voltage transformer |
| EP1624312A1 (en) * | 2004-08-06 | 2006-02-08 | Passoni & Villa Fabbrica Isolatori e Condensatori S.p.A. | Electronic measurement transformer for combined current and voltage measurements. |
| CN201298448Y (en) * | 2008-10-27 | 2009-08-26 | 中国西电电气股份有限公司 | A split type voltage mutual inductor |
| CN201877752U (en) * | 2010-12-09 | 2011-06-22 | 天津市百利纽泰克电气科技有限公司 | Error adjustment connecting box and capacitor voltage transformer with same |
| CN201887715U (en) * | 2010-11-15 | 2011-06-29 | 山东泰开互感器有限公司 | Voltage transformer error regulating device |
| WO2013098226A1 (en) * | 2011-12-31 | 2013-07-04 | Siemens Aktiengesellschaft | Combined transformer for power system |
| CN104166032A (en) * | 2014-08-20 | 2014-11-26 | 桂林电力电容器有限责任公司 | High voltage capacitor voltage transformer |
| CN105301550A (en) * | 2015-11-27 | 2016-02-03 | 国网宁夏电力公司电力科学研究院 | Split series combined voltage transformer |
| WO2017101530A1 (en) * | 2015-12-14 | 2017-06-22 | 全球能源互联网研究院 | Capacitive voltage transformer |
| CN207558570U (en) * | 2017-11-10 | 2018-06-29 | 江苏思源赫兹互感器有限公司 | A kind of more piece voltage transformer convenient for adjusting error |
-
2017
- 2017-11-10 CN CN201711106982.2A patent/CN107731488B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003059733A (en) * | 2001-08-09 | 2003-02-28 | Nissin Electric Co Ltd | Error adjusting device for voltage transformer |
| EP1624312A1 (en) * | 2004-08-06 | 2006-02-08 | Passoni & Villa Fabbrica Isolatori e Condensatori S.p.A. | Electronic measurement transformer for combined current and voltage measurements. |
| CN201298448Y (en) * | 2008-10-27 | 2009-08-26 | 中国西电电气股份有限公司 | A split type voltage mutual inductor |
| CN201887715U (en) * | 2010-11-15 | 2011-06-29 | 山东泰开互感器有限公司 | Voltage transformer error regulating device |
| CN201877752U (en) * | 2010-12-09 | 2011-06-22 | 天津市百利纽泰克电气科技有限公司 | Error adjustment connecting box and capacitor voltage transformer with same |
| WO2013098226A1 (en) * | 2011-12-31 | 2013-07-04 | Siemens Aktiengesellschaft | Combined transformer for power system |
| CN104166032A (en) * | 2014-08-20 | 2014-11-26 | 桂林电力电容器有限责任公司 | High voltage capacitor voltage transformer |
| CN105301550A (en) * | 2015-11-27 | 2016-02-03 | 国网宁夏电力公司电力科学研究院 | Split series combined voltage transformer |
| WO2017101530A1 (en) * | 2015-12-14 | 2017-06-22 | 全球能源互联网研究院 | Capacitive voltage transformer |
| CN207558570U (en) * | 2017-11-10 | 2018-06-29 | 江苏思源赫兹互感器有限公司 | A kind of more piece voltage transformer convenient for adjusting error |
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| Publication number | Publication date |
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| CN107731488A (en) | 2018-02-23 |
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