CN203365518U - Electronic mutual inductor with grooved iron core coil and resistance divider combination - Google Patents
Electronic mutual inductor with grooved iron core coil and resistance divider combination Download PDFInfo
- Publication number
- CN203365518U CN203365518U CN 201320426476 CN201320426476U CN203365518U CN 203365518 U CN203365518 U CN 203365518U CN 201320426476 CN201320426476 CN 201320426476 CN 201320426476 U CN201320426476 U CN 201320426476U CN 203365518 U CN203365518 U CN 203365518U
- Authority
- CN
- China
- Prior art keywords
- iron core
- mutual inductor
- voltage
- electronic mutual
- secondary coil
- 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)
- Transformers For Measuring Instruments (AREA)
- Testing Relating To Insulation (AREA)
Abstract
An electronic mutual inductor with a grooved iron core coil and resistance divider combination comprises a primary lead, a secondary coil, an iron core of the secondary coil, a sampling resistor, an aerial socket, a grounding bolt, a high-voltage sheild, a high-voltage arm resistor, a low-voltage shield, a low-voltage arm resistor and an insulating housing, and is characterized in that axial grooves are arranged in the iron core of the secondary coil. The air gap property of the grooves of the iron core is utilized to achieve measuring and protecting functions with one coil. The electronic mutual inductor is small, light and highly practical. The electronic mutual inductor employs a precise resistance divider for measuring voltage and is high in measuring accuracy.
Description
Technical field
The utility model relates to a kind of electric power mutual-inductor, particularly a kind of electronic mutual inductor with groove iron-core coil and resitstance voltage divider combination.
Background technology
At present; in the combination transformer used at 10～35KV electrical network; the measure portion of electronic current mutual inductor wherein, protection part are generally to adopt respectively low power current transformer, two coils of air core coil; if measure portion and protection part are adopted to a low power current transformer; owing to there being the magnetic saturation problem; just need to increase core section long-pending, volume is large, and cost is high.Common electronic type voltage transformer is generally resistance or capacitance-voltage-distributing type structure, in the electric resistance partial pressure type structure, adopt precision resistance voltage divider as sensing element, simple in structure, accuracy of measurement is high, volume is little, lightweight, and the electric capacity in the capacitance-voltage-distributing type structure easily is subject to the impact of environment temperature and change, thus reduce accuracy of measurement.
Summary of the invention
The purpose of this utility model is in order to overcome above-mentioned weak point, and provides a kind of simple in structure, and volume is little, lightweight, and accuracy of measurement is high, the practical electronic mutual inductor with groove iron-core coil and resitstance voltage divider combination.
The purpose of this utility model is achieved in that a kind of electronic mutual inductor with groove iron-core coil and resitstance voltage divider combination, comprise wire, secondary coil, secondary coil iron core, sample resistance, aviation socket, earth stud, high-tension shielding cover, high-voltage arm resistance, low pressure radome, low-voltage arm resistance, insulation shell, it is characterized in that having axial notch on the secondary coil iron core.
The utility model is owing to adopting above architecture advances, have the axial notch air gap on secondary coil iron core in current transformer, when rated current, the section that magnetic flux does not almost all cut off from iron core passes through, effect and low power current transformer are much the same, have very little error; When the first short circuit electric current is quite large and be in transient process the time, the section that corresponding iron core does not cut off is significantly saturated, magnetic flux almost all passes through from iron core air gap, so just improved former iron core-closed saturation point, make it not occur when 20 times of rated current saturated, reflect exactly the current status of circuit.Therefore, utilize the characteristic of its groove air gap, realized only with a coil, making the function of measuring and protecting simultaneously, volume is little, lightweight, practical.Voltage transformer (VT) adopts the precision resistance voltage divider measuring voltage, and accuracy of measurement is high.
The accompanying drawing explanation
Fig. 1 is the utility model example structure schematic diagram;
Fig. 2 is secondary coil iron core end face 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 and Figure 2, a kind of electronic mutual inductor with the combination of groove iron-core coil and resitstance voltage divider, comprise wire 1, secondary coil 2, secondary coil iron core 3, insulation shell 4, sample resistance 5, fairlead 6, discharge tube 7, aviation socket 8, earth stud 9, high-tension shielding cover 10, high-voltage arm resistance 11, low pressure radome 12, low-voltage arm resistance 13.Wherein on secondary coil iron core 3 inwalls, have axial notch 14, the degree of depth of groove 14 is 1/2 to 2/3 of iron core 3 radial thicknesss, one time wire 1 passes from the center of secondary coil 2, the secondary wiring of secondary coil 2 and sample resistance 5 and connect after, by lead-in wire, through fairlead 6, with aviation socket 8, be connected, high-voltage arm resistance 11 1 ends connect high-tension shielding cover 10, high-tension shielding cover 10 is connected with a wire 1, high-voltage arm resistance 11 other ends are connected with low-voltage arm resistance 13 1 ends, low-voltage arm resistance 13 other ends are connected with low pressure radome 12, low pressure radome 12 is connected with earth stud 9, low-voltage arm resistance 13 two ends are connected with aviation socket 8 with discharge tube 7 Lian Houzai, by epoxy resin, that each is zero, parts pour into an integrated entity, form insulation shell 4, aviation socket 8 is arranged on insulation shell 4 one sides.
Claims (1)
1. the electronic mutual inductor with the combination of groove iron-core coil and resitstance voltage divider, comprise a wire (1), secondary coil (2), secondary coil iron core (3), sample resistance (5), aviation socket (8), earth stud (9), high-tension shielding cover (10), high-voltage arm resistance (11), low pressure radome (12), low-voltage arm resistance (13), insulation shell (4), it is characterized in that on secondary coil iron core (3) having axial notch (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320426476 CN203365518U (en) | 2013-07-18 | 2013-07-18 | Electronic mutual inductor with grooved iron core coil and resistance divider combination |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320426476 CN203365518U (en) | 2013-07-18 | 2013-07-18 | Electronic mutual inductor with grooved iron core coil and resistance divider combination |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203365518U true CN203365518U (en) | 2013-12-25 |
Family
ID=49813263
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320426476 Expired - Fee Related CN203365518U (en) | 2013-07-18 | 2013-07-18 | Electronic mutual inductor with grooved iron core coil and resistance divider combination |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203365518U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106093511A (en) * | 2016-08-26 | 2016-11-09 | 三峡大学 | A kind of iron-core coil high-precision electronic insertion current transformer containing air gap |
| CN107768871A (en) * | 2017-11-06 | 2018-03-06 | 江苏科兴电器有限公司 | A kind of cable intermediate connector with voltage sensor function |
-
2013
- 2013-07-18 CN CN 201320426476 patent/CN203365518U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106093511A (en) * | 2016-08-26 | 2016-11-09 | 三峡大学 | A kind of iron-core coil high-precision electronic insertion current transformer containing air gap |
| CN106093511B (en) * | 2016-08-26 | 2023-10-27 | 三峡大学 | High-precision electronic current transformer with iron core coil containing air gap |
| CN107768871A (en) * | 2017-11-06 | 2018-03-06 | 江苏科兴电器有限公司 | A kind of cable intermediate connector with voltage sensor function |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203406161U (en) | Hollow coil with closed magnetic circuit and resistance voltage divider combined electronic instrument transformer | |
| CN203405507U (en) | Integrally cast electronic voltage transformer for detecting current | |
| KR102567205B1 (en) | Sensor with separate capacitor for high voltage detachable connector | |
| US10732206B2 (en) | Current sensor and method of assembly | |
| CN203054056U (en) | Electronic voltage transformer | |
| CN101377976A (en) | Electronic voltage transformer | |
| CN203365518U (en) | Electronic mutual inductor with grooved iron core coil and resistance divider combination | |
| WO2011130905A1 (en) | Pulse current sensor and lightning protection cabinet with surge wave recording composed of the sensor | |
| CN102682985B (en) | High-voltage electronic type voltage transformer | |
| CN201556523U (en) | High voltage dry type current transformer with protecting gap | |
| CN202929092U (en) | High-precision Rogowski coil current transformer | |
| CN202975107U (en) | Column-structured electronic current transformer | |
| CN203324357U (en) | Electronic voltage transformer used for detecting high voltage resistor current | |
| CN103155057A (en) | Multifunctional measuring device | |
| CN203366985U (en) | Novel electronic combined transformer | |
| CN203406160U (en) | Combined instrument transformer provided with closed magnetic circuit type hollow coil | |
| CN203406159U (en) | Hollow coil with closed magnetic circuit and coaxial capacitor combined electronic instrument transformer | |
| CN203366986U (en) | Electronic transformer with combination of notched iron core coil and coaxial capacitance | |
| CN202601407U (en) | High-voltage electronic type voltage transformer | |
| CN201716359U (en) | Non-contact electronic type voltage sampling device | |
| JP2014003607A (en) | Line impedance stabilization network | |
| CN203366981U (en) | Electronic current transformer with air-gap iron core with groove | |
| CN206516474U (en) | Current transformer | |
| CN108550493B (en) | Switch integration middling pressure electronic voltage transformer | |
| CN106093535A (en) | Pole |
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: 20131225 Termination date: 20210718 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |