CN201364813Y - Variable transformation ratio current sensor - Google Patents
Variable transformation ratio current sensor Download PDFInfo
- Publication number
- CN201364813Y CN201364813Y CNU2008201797995U CN200820179799U CN201364813Y CN 201364813 Y CN201364813 Y CN 201364813Y CN U2008201797995 U CNU2008201797995 U CN U2008201797995U CN 200820179799 U CN200820179799 U CN 200820179799U CN 201364813 Y CN201364813 Y CN 201364813Y
- Authority
- CN
- China
- Prior art keywords
- coil
- current sensor
- transformation ratio
- variable transformation
- voltage divider
- 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
Images
Landscapes
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
Abstract
The utility model relates to a variable transformation ratio current sensor, which comprises a coil winding and is characterized in that a coil has no a center tap; two ends of the coil are connected with a resistance voltage divider; and wiring terminals are arranged between adjacent resistors of the resistance voltage divider. The variable transformation ratio current sensor achieves the variable transformation ratio by connecting the resistance voltage divider at two ends of the coil; the coil has no the center tap, so the winding process is simple, materials are saved, the cost is reduced and the production efficiency is improved; economic benefit is obviously increased; products have small size, light weight and high cost performance; one sensor can simultaneously meet the requirements of variable transformation ratio and is convenient for users to use; in addition, the variable transformation ratio current sensor has high measurement precision, wide range, safe and reliable running and no hidden dangers of accidents.
Description
Technical field
The utility model relates to a kind of electric component, especially in, do to measure in the low-tension switch cabinet or the polytropic ratio current sensor of protection usefulness.
Background technology
In recent years, electric power system develops to the direction of miniaturization, intellectuality, networking, electronic technology and computer technology have obtained using widely in electric power system and distribution automation system, and current sensor has become the indispensable equipment in the transformation and distribution system.The making principle of current sensor mainly contains two kinds: a kind of Rogowski coil principle that is based on is made; Another kind is based on little ironcore choke principle and makes.When making the current sensor of polytropic ratio, generally adopt the tapped mode of coil to wind the line, no-load voltage ratio is many more, needs the end of a thread of extraction just many more.Like this, the technique for coiling complexity of coil, test process is loaded down with trivial details, very easily goes wrong.Because the tap of coil, making increases with the line amount, and the overall dimension of coil increases, and the insulation wrapper material also increases thereupon, and the cost of manufacture of product increases, and production efficiency reduces.
Summary of the invention
The polytropic ratio current sensor that provides a kind of winding not have tap is provided the purpose of this utility model.
The purpose of this utility model is achieved in that the polytropic ratio current sensor, comprise coil windings, it is characterized in that coil is no tapped coil, the two ends of coil are connected with resitstance voltage divider, are provided with binding post between the adjacent resistor of resitstance voltage divider.
Coil windings and resitstance voltage divider are into a single integrated structure with poured with epoxy resin.
The polytropic ratio current sensor that the utility model provides is to connect resitstance voltage divider by the two ends at coil to realize polytropic ratio, and coil does not have centre tap, and technique for coiling is simple, saves material, reduces cost, and production efficiency improves; Economic benefit obviously increases; The volume of product is little, in light weight, cost performance is high; A transducer can satisfy the requirement of multiple no-load voltage ratio simultaneously, is user-friendly to; Certainty of measurement height, wide ranges; Safe and reliable to operation, accident free hidden danger.
Description of drawings
Fig. 1 is a schematic diagram of the present utility model.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing:
As shown in the figure, by the coil windings that coil and skeleton constitute, its skeleton can be a permeability magnetic material, also can be insulating material.Two ends at coil a, b are connected to resitstance voltage divider, resitstance voltage divider be by several resistance R 1, R2, R3 ..., the Rn formation of connecting, between each resistance, be respectively equipped with binding post S1, S2, S3 ... Sn+1 is as the secondary terminal of transducer.Coil windings and resitstance voltage divider are shaped with poured with epoxy resin, constitute the polytropic ratio current sensor.Primary Conductor P1-P2 passes from winding (ironcore choke or air core coil) center.
Operation principle of the present utility model is: when power current flows through, different voltage output will be arranged between each terminal from Primary Conductor, perhaps under the different functions of current, identical voltage output will be arranged between the terminal.As long as reasonably select the number of turn of winding and the resistance of each resistance, can on a transducer, realize a satisfactory n no-load voltage ratio.As: S1-S2:200A/0.15V; S1-S3:400A/0.15V; S1-S4:600A/0.15V; Deng.
Claims (2)
1, a kind of polytropic ratio current sensor comprises coil windings, it is characterized in that coil is no tapped coil, and the two ends of coil are connected with resitstance voltage divider, are provided with binding post between the adjacent resistor of resitstance voltage divider.
2, polytropic ratio current sensor according to claim 1 is characterized in that coil windings and resitstance voltage divider are into a single integrated structure with poured with epoxy resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201797995U CN201364813Y (en) | 2008-12-08 | 2008-12-08 | Variable transformation ratio current sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201797995U CN201364813Y (en) | 2008-12-08 | 2008-12-08 | Variable transformation ratio current sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201364813Y true CN201364813Y (en) | 2009-12-16 |
Family
ID=41475485
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201797995U Expired - Fee Related CN201364813Y (en) | 2008-12-08 | 2008-12-08 | Variable transformation ratio current sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201364813Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103105515A (en) * | 2011-11-14 | 2013-05-15 | 北京北方微电子基地设备工艺研究中心有限责任公司 | Processing equipment of current sensor, impedance matching device and plasma |
| CN113241245A (en) * | 2021-05-10 | 2021-08-10 | 大连北方互感器集团有限公司 | Current transformer with constant-value resistor and preparation method thereof |
-
2008
- 2008-12-08 CN CNU2008201797995U patent/CN201364813Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103105515A (en) * | 2011-11-14 | 2013-05-15 | 北京北方微电子基地设备工艺研究中心有限责任公司 | Processing equipment of current sensor, impedance matching device and plasma |
| CN113241245A (en) * | 2021-05-10 | 2021-08-10 | 大连北方互感器集团有限公司 | Current transformer with constant-value resistor and preparation method thereof |
| CN113241245B (en) * | 2021-05-10 | 2022-03-11 | 大连北方互感器集团有限公司 | Current transformer with constant-value resistor and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202258772U (en) | Epoxy pouring totally-closed support type electronic combined transformer for centrally installed switchgear | |
| CN205670479U (en) | The combination transformer that a kind of high pressure plug formula connects | |
| CN201364813Y (en) | Variable transformation ratio current sensor | |
| CN205670502U (en) | Three-phase hexa-atomic part Current Voltage Split assembled transformer | |
| CN201421466Y (en) | Small high-voltage kilowatt-hour meter directly arranged on 10KV power supply line | |
| CN101266878A (en) | Current mutual inductor with shunt resistor | |
| CN114512313B (en) | Current transformer with rated secondary current lower than 1A | |
| CN202975107U (en) | Column-structured electronic current transformer | |
| CN201956187U (en) | Electronic type voltage transformer | |
| CN101571553B (en) | Minitype high-voltage electric energy meter directly arranged in 10KV power supply circuit | |
| CN201364356Y (en) | Cascade current sensor | |
| CN201498356U (en) | Electronic combined power mutual inductor | |
| CN101930838A (en) | Electronic type voltage transformer | |
| CN201434883Y (en) | Rogowski coil electric quantity transducer | |
| CN202796410U (en) | Outdoor current transformer | |
| CN202084414U (en) | Combined-type zero sequence current mutual inductor | |
| CN206516474U (en) | Current transformer | |
| CN207148191U (en) | Intelligent suitching type current transformer | |
| CN203799858U (en) | Dry type current transformer high in no-load voltage ratio and capacity | |
| CN203366985U (en) | Novel electronic combined transformer | |
| CN219759356U (en) | Current transformer | |
| CN217361337U (en) | SMD transformer | |
| CN103472429A (en) | Multifunctional multi-transformation ratio comparison device | |
| CN201233808Y (en) | Current mutual inductor having shunting resistor | |
| CN107192974A (en) | Integration voltage current standard transformer |
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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091216 Termination date: 20171208 |