CN203324357U - Electronic voltage transformer used for detecting high voltage resistor current - Google Patents
Electronic voltage transformer used for detecting high voltage resistor current Download PDFInfo
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- CN203324357U CN203324357U CN2013203738051U CN201320373805U CN203324357U CN 203324357 U CN203324357 U CN 203324357U CN 2013203738051 U CN2013203738051 U CN 2013203738051U CN 201320373805 U CN201320373805 U CN 201320373805U CN 203324357 U CN203324357 U CN 203324357U
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- shielding cover
- current transformer
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- voltage
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- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
Abstract
The utility model relates to an electronic voltage transformer used for detecting a high voltage resistor current. The electronic voltage transformer is characterized in that a high precision current transformer is mounted in a metal foundation box, an upper end of the foundation box is equipped with a low voltage shielding cover, a leading wire of the low voltage shielding cover penetrates through a center of the current transformer and is connected with a grounding bolt, a secondary lead of the current transformer is connected with an aviation plug, an inner side of the low voltage shielding cover is connected with a lower end of a high voltage resistor, an upper end of the high voltage resistor is sequentially connected with a high voltage shielding cover and a high voltage primary wiring column, and the high voltage resistor, the high voltage shielding cover and the low voltage shielding cover are casted into one body through epoxy resin to form an insulation casing. The electronic voltage transformer has properties of simple insulation structure, high measuring precision, safe operation and strong practicality and is widely used in various types of high and middle voltage electric networks.
Description
Technical field
The utility model relates to a kind of electric power mutual-inductor, particularly a kind of electronic type voltage transformer that detects the high-tension resistive electric current.
Background technology
Electric power mutual-inductor is indispensable visual plant in transmission line of electricity; its effect is that relation is down to by the high voltage in transmission line of electricity and large electric current the standard figures that can directly measure by instrument according to a certain percentage, or provides electric current, voltage signal and action current for various relay protections.Traditional electromagnetic transformer insulation system complexity, the inherent shortcoming such as have magnetic saturation and ferroresonance phenomenon, dynamic range is little, volume and weight is large.Along with developing rapidly of digital transformer substation, the electronic mutual inductor that some are novel has appearred in prior art, at present, in 6～35KV electrical network, common electronic mutual inductor is resistance or capacitance-voltage-distributing type structure, there is the advantage such as measure bandwidth, dynamic property is good, the range of linearity is large, insulation system is simple, volume is little, but also have restricted application, do not realize that isolation fully, the electrical secondary system of primary system and electrical secondary system are subject to the weak points such as primary system interference.
Summary of the invention
The purpose of this utility model is in order to overcome above-mentioned weak point, and provides that a kind of insulation system is simple, measuring accuracy is high, uses the electronic type voltage transformer of the detection high-tension resistive electric current that safe, practical property is strong.
The purpose of this utility model is achieved in that a kind of electronic type voltage transformer that detects the high-tension resistive electric current, it is characterized in that it comprises insulation shell, the high-tension shielding cover, the low pressure radome, high-tension resistive, high precision current transformer, aviation plug, high pressure primary connection post, earth stud, the current transformer support, the metab box, wherein high precision current transformer is arranged in the metab box by the current transformer support, aviation plug, earth stud is arranged on respectively on metab box box body, the low pressure radome is installed in metab box upper end, low pressure radome lead-in wire is connected with earth stud through the high precision current transformer center, the high precision current transformer secondary wiring is connected with aviation plug, low pressure radome inner face connects the high-tension resistive lower end, the high-tension resistive upper end connects the high-tension shielding cover successively, high pressure primary connection post, by epoxy resin by high-tension resistive, the high-tension shielding cover, the low pressure radome pours into an integrated entity, form insulation shell.
The utility model is owing to adopting above design; flow through the weak current of high-tension resistive to earth terminal by the high precision current transformer measurement; its secondary current is sent to pulpit by wire, then converts corresponding secondary voltage signal to for instrument and protection interface through current-voltage.Insulation system is simple, and measuring accuracy is high, uses safety, practical, extensively is applicable to using in various height, medium voltage network.
The accompanying drawing explanation
Fig. 1 is the utility model example structure schematic diagram.
Embodiment
Now illustrated embodiment is made detailed description to the utility model by reference to the accompanying drawings.
As shown in Figure 1, a kind of electronic type voltage transformer that detects the high-tension resistive electric current, comprise insulation shell 1, high-tension shielding cover 2, low pressure radome 3, high-tension resistive 4, high precision current transformer 5, discharge tube 6, aviation plug 7, high pressure primary connection post 8, earth stud 9, current transformer support 10, discharge tube support 11, metab box 12.High precision current transformer 5, discharge tube 6 is respectively by current transformer support 10, discharge tube support 11 is arranged in metab box 12, aviation plug 7, earth stud 9 is arranged on respectively on metab box 12 box bodys, low pressure radome 3 is installed in metab box 12 upper ends, low pressure radome 3 lead-in wires are connected with earth stud 9 through high precision current transformer 5 centers, the lead-in wire two ends also connect discharge tube 6, high precision current transformer 5 secondary wirings are connected with aviation plug 7, low pressure radome 3 inner faces connect high-tension resistive 4 lower ends, high-tension resistive 4 upper ends connect high-tension shielding cover 2 successively, high pressure primary connection post 8, by epoxy resin by high-tension resistive 4, high-tension shielding cover 2, low pressure radome 3 pours into an integrated entity, form insulation shell 1.
Claims (1)
1. an electronic type voltage transformer that detects the high-tension resistive electric current, is characterized in that it comprises insulation shell (1), high-tension shielding cover (2), low pressure radome (3), high-tension resistive (4), high precision current transformer (5), aviation plug (7), high pressure primary connection post (8), earth stud (9), current transformer support (10), metab box (12), wherein high precision current transformer (5) is arranged in metab box (12) by current transformer support (10), aviation plug (7), earth stud (9) is arranged on respectively on metab box (12) box body, low pressure radome (3) is installed in metab box (12) upper end, low pressure radome (3) lead-in wire is connected with earth stud (9) through high precision current transformer (5) center, high precision current transformer (5) secondary wiring is connected with aviation plug (7), low pressure radome (3) inner face connects high-tension resistive (4) lower end, and high-tension resistive (4) upper end connects high-tension shielding cover (2) successively, high pressure primary connection post (8), by epoxy resin by high-tension resistive (4), high-tension shielding cover (2), low pressure radome (3) pours into an integrated entity, and forms insulation shell (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203738051U CN203324357U (en) | 2013-06-27 | 2013-06-27 | Electronic voltage transformer used for detecting high voltage resistor current |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203738051U CN203324357U (en) | 2013-06-27 | 2013-06-27 | Electronic voltage transformer used for detecting high voltage resistor current |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203324357U true CN203324357U (en) | 2013-12-04 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203738051U Expired - Fee Related CN203324357U (en) | 2013-06-27 | 2013-06-27 | Electronic voltage transformer used for detecting high voltage resistor current |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203324357U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104360132A (en) * | 2014-11-14 | 2015-02-18 | 国家电网公司 | Contact resistance live line measurement device |
| CN109239439A (en) * | 2018-10-16 | 2019-01-18 | 国网江苏省电力有限公司南京供电分公司 | A kind of embedded-type electric pressure sensor |
| 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 |
-
2013
- 2013-06-27 CN CN2013203738051U patent/CN203324357U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104360132A (en) * | 2014-11-14 | 2015-02-18 | 国家电网公司 | Contact resistance live line measurement device |
| CN109239439A (en) * | 2018-10-16 | 2019-01-18 | 国网江苏省电力有限公司南京供电分公司 | A kind of embedded-type electric pressure sensor |
| 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 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131204 Termination date: 20210627 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |