CN203054056U - Electronic voltage transformer - Google Patents
Electronic voltage transformer Download PDFInfo
- Publication number
- CN203054056U CN203054056U CN 201320035892 CN201320035892U CN203054056U CN 203054056 U CN203054056 U CN 203054056U CN 201320035892 CN201320035892 CN 201320035892 CN 201320035892 U CN201320035892 U CN 201320035892U CN 203054056 U CN203054056 U CN 203054056U
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- China
- Prior art keywords
- resistance
- connection terminal
- insulation shell
- resistor
- transformer
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Abstract
An electronic voltage transformer comprises a resistance voltage divider, an insulation shell and a flat base. The resistance voltage divider contains a first resistor and a second resistor which are connected in series through a wire. The two resistors are respectively provided with a shielding case. The upper end of the first resistor is fixed with a first primary amphenol connector. The lower end of the second resistor is connected with a second primary amphenol connector through a wire. A secondary amphenol connector is connected with a node C on the wire between the first resistor and the second resistor through a wire and is simultaneously connected with a lower wire of the second resistor. The insulation shell is fixed on the flat base. The secondary amphenol connector is an aviation plug. The insulation shell is integrally provided with a plurality of umbrella skirts. There is no iron core arranged inside the transformer. Thus, magnetic saturation problem will not be generated when the transformer is in use, and smooth power lines will not be influenced. The electronic voltage transformer has a simple structure, is small in size, and is used to reduce error source. By the adoption of the aluminium shielding cases, electromagnetic interference can be decreased to the maximum, and the transformer can operate more stably and reliably.
Description
Technical field
The utility model belongs to the voltage transformer (VT) field; be particularly related to a kind of electronic type voltage transformer; be applicable in 10kV and the following high-tension switch cabinet; use with electronic instrument, microcomputer measurement protection coordinative composition of equipments; realize multi-functionals such as measurement, control, protection, data transmission and electriferous state digital monitoring simultaneously; can not produce big electric current during second short circuit, can not produce ferroresonance yet, can use as high voltage display device and support insulator simultaneously.
Background technology
The 10KV voltage transformer (VT) that electric system is at present used is electromagnetic transformer basically; and electromagnetic transformer has many defectives;, volume big Heavy Weight not high such as the insulation degree, be easy to generate resonance, take place that second short circuit makes that mutual inductor burns easily, precision is subjected to load effect bigger etc.; so through regular meeting various accidents take place, the safety of serious threat operation of power networks.In view of the foregoing power department is badly in need of having a kind of mutual inductor to address these problems.
The utility model content
The purpose of this utility model provides a kind of electronic type voltage transformer, at some defectives of electromagnetic transformer, has made a kind of reduction electromagnetic interference (EMI), moves more reliable and more stable voltage transformer (VT).
The technical scheme that adopts is:
A kind of electronic type voltage transformer comprises resitstance voltage divider, insulation shell and flat base.
Its technical essential is:
Resitstance voltage divider comprises first resistance and second resistance, connects by lead between described two resistance.
The first resistance top is provided with first resistance by bolted first radome.
The second resistance outside is provided with second resistance passes through bolted secondary shielding cover, and the bottom of first resistance is positioned at the secondary shielding cover.
Fixedly there is the first primary connection terminal first resistance upper end, and the second resistance lower end is connected with the second primary connection terminal by lead.
The secondary connection terminal is connected by the C node on the lead between lead and first resistance and second resistance, and the secondary connection terminal is connected with the lower end lead of second resistance simultaneously.
Resitstance voltage divider is positioned at insulation shell inside, and the first primary connection terminal is positioned at the insulation shell top, and the second primary connection terminal and secondary connection terminal are positioned at the insulation shell bottom.Insulation shell is fixed on the flat base.Described secondary connection terminal is aviation plug.
First resistance is as high-tension resistive, and second resistance is as low resistance.Insulation shell is the epoxy resin housing.The first primary connection terminal is primary connection terminal (A), and the second primary connection terminal is primary connection terminal (N).Described two radomes do not contact mutually.
Can be integrally formed with a plurality of identical full skirts in described insulation shell upper outside.Described first radome and secondary shielding cover are the aluminium radome.
Be connected to the double layer screen twisted wire in the secondary connection terminal outer during use, mainly the resitstance voltage divider output signal be delivered to signal processing unit, realize getting rid of the outside electromagnetic interference function of shielding simultaneously.
Its advantage is:
This mutual inductor inside does not have iron core, can not produce magnetically saturated problem in the use, and it is unimpeded not influence supply line.Simple in structure, volume is little, has reduced error source.The aluminum radome can reduce electromagnetic interference (EMI) to greatest extent, makes the mutual inductor operation more reliable and more stable.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is vertical view of the present utility model.
Embodiment
A kind of electronic type voltage transformer comprises resitstance voltage divider, insulation shell 6 and flat base 10.
Resitstance voltage divider comprises first resistance 1 and second resistance 2, and is fixing by lead series connection and welding between described two resistance.
First resistance, 1 top is provided with first resistance 1 by bolted first radome 3.
Second resistance, 2 outsides are provided with second resistance 2 passes through bolted secondary shielding cover 4, and the bottom of first resistance 1 is positioned at secondary shielding cover 4.
First resistance, 1 upper end fixedly has the first primary connection terminal, 8, the second resistance, 2 lower ends to be connected with the second primary connection terminal 9 by lead.
Secondary connection terminal 7 is connected by the C node on the lead between lead and first resistance 1 and second resistance 2, and secondary connection terminal 7 is connected with the lower end lead of second resistance 2 simultaneously.
Resitstance voltage divider is cast in insulation shell 6 inside, and the first primary connection terminal 8 is positioned at insulation shell 6 tops, and the second primary connection terminal 9 and secondary connection terminal 7 are positioned at insulation shell 6 bottoms.Insulation shell 6 is fixed on the flat base 10.Described secondary connection terminal 7 is aviation plug.
First resistance 1 is as high-tension resistive, and second resistance 2 is as low resistance.Insulation shell 6 is the epoxy resin housing.The first primary connection terminal 8 is primary connection terminal (A), and the second primary connection terminal 9 is primary connection terminal (N).Described two radomes do not contact mutually.Described aviation plug is known technology, so repeated description not.
Be integrally formed with a plurality of identical full skirts 5 in described insulation shell 6 upper outside.Described first radome 3 and secondary shielding cover 4 are the aluminum radome.
This mutual inductor is a kind of electronic type voltage transformer of making based on the electric resistance partial pressure principle, and resitstance voltage divider is mainly exported the proportional small voltage signal that is converted to of busbar voltage.Replaced traditional electromagnetic potential transformer.This type mutual inductor inside does not have iron core, so can not produce magnetically saturated problem in using, even the secondary line short circuit, mutual inductor is not affected yet, and main is, and not influence supply line unimpeded.Since adopt electric resistance partial pressure, simple in structure, the very little very light in weight of volume (have only 10KG, the electromagnetic transformer of same parameter is at least at 30KG).This mutual inductor is because of no iron core, and no electromagnetic wire so do not produce added losses such as iron loss, copper loss, has reduced error source.High pressure and low resistance outside have an aluminum radome respectively, can reduce electromagnetic interference (EMI) to greatest extent, make the mutual inductor operation more reliable and more stable.This mutual inductor has increased full skirt 5, and creepage distance is increased, and anti-arc sudden strain of a muscle ability improves.This mutual inductor satisfies the requirement of GB20840.7 electronic type voltage transformer.Measure class of accuracy and can satisfy the 0.2/3P level.
Claims (2)
1. an electronic type voltage transformer comprises resitstance voltage divider, insulation shell (6) and flat base (10); It is characterized in that:
Resitstance voltage divider comprises first resistance (1) and second resistance (2), connects by lead between described two resistance;
First resistance (1) top is provided with first resistance (1) by bolted first radome (3);
Second resistance (2) outside is provided with second resistance (2) passes through bolted secondary shielding cover (4), and the bottom of first resistance (1) is positioned at secondary shielding cover (4);
Fixedly there is the first primary connection terminal (8) first resistance (1) upper end, and second resistance (2) lower end is connected with the second primary connection terminal (9) by lead;
Secondary connection terminal (7) is connected by the C node on the lead between lead and first resistance (1) and second resistance (2), and secondary connection terminal (7) is connected with the lower end lead of second resistance (2) simultaneously;
Resitstance voltage divider is positioned at insulation shell (6) inside, and the first primary connection terminal (8) is positioned at insulation shell (6) top, and the second primary connection terminal (9) and secondary connection terminal (7) are positioned at insulation shell (6) bottom; Insulation shell (6) is fixed on the flat base (10); Described secondary connection terminal (7) is aviation plug.
2. a kind of electronic type voltage transformer according to claim 1 is characterized in that: be integrally formed with a plurality of identical full skirts (5) in described insulation shell (6) upper outside; Described first radome (3) and secondary shielding cover (4) are the aluminium radome.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320035892 CN203054056U (en) | 2013-01-23 | 2013-01-23 | Electronic voltage transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320035892 CN203054056U (en) | 2013-01-23 | 2013-01-23 | Electronic voltage transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203054056U true CN203054056U (en) | 2013-07-10 |
Family
ID=48736996
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320035892 Expired - Fee Related CN203054056U (en) | 2013-01-23 | 2013-01-23 | Electronic voltage transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203054056U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104319087A (en) * | 2014-11-07 | 2015-01-28 | 北京双杰电气股份有限公司 | Voltage transformer |
| CN106054116A (en) * | 2016-08-12 | 2016-10-26 | 国网冀北电力有限公司承德供电公司 | Intelligent-type high-voltage metering device |
| CN110244110A (en) * | 2019-07-10 | 2019-09-17 | 无锡应达工业有限公司 | A kind of voltage sensor control module that more ratios are adjusted |
| CN111952019A (en) * | 2020-08-13 | 2020-11-17 | 许继集团有限公司 | Insulator of built-in capacitor EVT assembly and processing method thereof |
| CN112599343A (en) * | 2020-12-04 | 2021-04-02 | 北京双杰电气股份有限公司 | Novel built-in convenient electronic voltage transformer |
-
2013
- 2013-01-23 CN CN 201320035892 patent/CN203054056U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104319087A (en) * | 2014-11-07 | 2015-01-28 | 北京双杰电气股份有限公司 | Voltage transformer |
| CN106054116A (en) * | 2016-08-12 | 2016-10-26 | 国网冀北电力有限公司承德供电公司 | Intelligent-type high-voltage metering device |
| CN110244110A (en) * | 2019-07-10 | 2019-09-17 | 无锡应达工业有限公司 | A kind of voltage sensor control module that more ratios are adjusted |
| CN111952019A (en) * | 2020-08-13 | 2020-11-17 | 许继集团有限公司 | Insulator of built-in capacitor EVT assembly and processing method thereof |
| CN111952019B (en) * | 2020-08-13 | 2022-04-05 | 许继集团有限公司 | Insulator of built-in capacitor EVT assembly and processing method thereof |
| CN112599343A (en) * | 2020-12-04 | 2021-04-02 | 北京双杰电气股份有限公司 | Novel built-in convenient electronic voltage transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 116200, Liaoning City, Dalian province Pulandian Taiping Office Home Industrial Zone Patentee after: Sino Canton electric appliance Limited by Share Ltd Address before: 116200, Liaoning City, Dalian province Pulandian Taiping Office Home Industrial Zone Patentee before: Dalian Zhongguang Instrument Transformer Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130710 Termination date: 20210123 |