CN2262245Y - Voltage type current sensor - Google Patents
Voltage type current sensor Download PDFInfo
- Publication number
- CN2262245Y CN2262245Y CN 95240814 CN95240814U CN2262245Y CN 2262245 Y CN2262245 Y CN 2262245Y CN 95240814 CN95240814 CN 95240814 CN 95240814 U CN95240814 U CN 95240814U CN 2262245 Y CN2262245 Y CN 2262245Y
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- CN
- China
- Prior art keywords
- current
- sensor
- utility
- voltage
- casing
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- 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
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Abstract
The utility model provides a voltage type current sensor. The utility model applies the electromagnetic induction principle and adopts the structure that a circuit current cuts magnetic lines. The utility model is composed of a casing, a wire threading hole, magnetic cores, a current coil, a voltage coil, a resistor, a wire connecting terminal, etc., wherein, the casing can wrap the whole sensor; the central part of the casing has the wire threading hole penetrating the front part and the rear part of the sensor. A pair of magnetic cores are sheathed with the periphery of the wire threading hole; the current coil and the voltage coil are respectively wound on the magnetic cores; the resistor is connected with the upper part of the current coil, and the resistor is wrapped in the casing. The two groups of coils are respectively connected with the wire connecting terminal extending out of the casing. The sensor can enhance the safety performance, the detecting accuracy and the reliability of a detecting current, so that the utility model has wide popularized prospect in the field of power industry.
Description
The utility model relates to the measurement electric variable, is meant a kind of be used for power transmission lines and converting equipment current measurement especially, and the voltage-type current sensor of operating voltage and current signal can self be provided.
The current measurement of existing power transmission line and converting equipment and signal transmission are finished by current transformer, must provide power supply to it in addition during its operate as normal.The clamp on amperemeter dry cell power supply that generally uses in the power industry for example; The watt-hour meter of metering power consumption is directly powered by power circuit.Though these current measurement instruments can be finished the surveying work of electric current, itself must provide under the voltage condition and could work, and brings a lot of troubles for the current measurement work of power circuit, and has wasted the energy.Especially sometimes at the scene must artificial hot line job during detected transmission circuit electric current, directly influence operating personnel's personal safety.
The purpose of this utility model just is to overcome the defective that existing current measurement instrument exists, and provides a kind of and adopts the power transmission lines electric current cutting sensor magnetic core magnetic line of force and produce the voltage-type current sensor of sensor current and voltage.
Voltage-type current sensor application electromagnetic induction principle of the present utility model adopts line current cutting magnetic line structure, is made of shell, through wires hole, magnetic core, current coil, resistance, potential winding and connection terminal etc.Shell cladding whole sensor, the shell central part is the through wires hole that runs through the sensor front and back, one secondary magnetic core is enclosed within around the through wires hole, current coil and potential winding are wound on the magnetic core respectively, resistance both can be connected on and wrap in the housing on the current coil, also can install at external circuit, two groups of coils are connected on respectively on the connection terminal that stretches out shell, also can directly be connected with the circuit of detecting instrument device respectively.The voltage-type current sensor is installed on power transmission lines or the converting equipment circuit, also can be installed in and be installed on the relevant test line in the apparatus again, when the power bus-bar that passes from through wires hole passes through electric current, cutting magnetic line and produce current signal and voltage is exported by connection terminal through current coil and potential winding.Current signal can directly detect for apparatus, uses as signal source; Voltage can be used as the power supply power supply after external circuit rectification, filtering, voltage stabilizing, make the work of detecting instrument device.Voltage-type current sensor of the present utility model is applicable to the situation work that bus current 10A is above.This sensor also can provide to exchange or direct supply except as detecting the current sensor.
Advantage of the present utility model just is that the principle of using electromagnetic induction adopts line current cutting magnetic line structure, sensor can provide power supply and test signal simultaneously when power bus-bar is detected, and order. when detecting, make detecting instrument device and forceful electric power realize isolation, exempted the danger of artificial live testing, the security performance and the serviceable life of also having improved the detecting instrument device simultaneously, improve accuracy of detection and reliability.This voltage-type current sensor also has characteristics simple in structure, easy for installation.Thereby has promotion prospect widely in the power industry field.
Below in conjunction with accompanying drawing the utility model is further described.
Fig. 1 is a front elevation of the present utility model;
Fig. 2 is an A-A sectional view of the present utility model;
Fig. 3 is a wiring diagram of the present utility model.
See figures.1.and.2; The utility model by shell [1], through wires hole [2], Magnetic core [3], current coil [4], resistance [5], potential winding [6] and binding post [7] formation such as. Should guarantee insulation between coil and the magnetic core [3]. Through wires hole [2] Diameter dimension should be determined magnetic core according to the specification of magnetic core and the specification of power bus-bar [3], the specification of current coil [4] and potential winding [6] is according to the power bus-bar electric current And determine the signal amplitude that resistance [5] provides according to detecting instrument device needs and really Fixed.
With reference to Fig. 3, through the electric current cutting magnetic line, sensor produces respectively electricity such as figure Press and current signal.
Below be an example of the present utility model, the actual use of the present utility model is not limited to this embodiment.
Example 1: the power current display of working voltage type current sensor, specification are the power current display of 300A, and it has related parameter as follows:
1. more than enameled wire 1 circle of bus current 300A:2. display working current 1A:3. sensor current coil Φ more than 0.27; 4. about signal resistance 5.1 Ω; 5. about enameled wire 300 circles of sensor voltage coil Φ more than 0.27; 6. the sensor magnetic core is a ring type magnetic core; 7. the through wires hole diameter is Φ 3.5cm; 8. sensor output voltage 12V; 9. more than the sensor signal current 50mA.
The power current display need not to connect in addition power supply, directly pass behind the tested cable rack-mount, daily need not the maintenance.Through using this testing tool device can bear heavy current impact, show the state variation of bus current at any time, exempted the climb situation of hot line job of operating personnel, reduce production cost and saved the energy, protected the safety of transmission line equipment.Power supply department wishes to come into the market in batches as early as possible.
Claims (2)
1, a kind of voltage-type current sensor is characterized in that its application electromagnetic induction principle adopts line current cutting magnetic line structure, is made of shell, through wires hole, magnetic core, current coil, potential winding, resistance and connection terminal; Shell cladding whole sensor, the shell central part is the through wires hole that runs through the sensor front and back, and a secondary magnetic core is enclosed within around the through wires hole, and current coil and potential winding are wound on the magnetic core respectively, resistance is connected on and wraps on the current coil in the housing, and two groups of coils are connected on respectively on the connection terminal that stretches out shell.
2, voltage-type current sensor according to claim 1 is characterized in that resistance installs at external circuit, and two groups of coils directly are connected with the circuit of detecting instrument device respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95240814 CN2262245Y (en) | 1995-11-02 | 1995-11-02 | Voltage type current sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95240814 CN2262245Y (en) | 1995-11-02 | 1995-11-02 | Voltage type current sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2262245Y true CN2262245Y (en) | 1997-09-10 |
Family
ID=33882326
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95240814 Expired - Fee Related CN2262245Y (en) | 1995-11-02 | 1995-11-02 | Voltage type current sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2262245Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101438173B (en) * | 2006-05-08 | 2011-08-10 | 特克特朗尼克公司 | Current sensing circuit for use in a current measurement probe |
-
1995
- 1995-11-02 CN CN 95240814 patent/CN2262245Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101438173B (en) * | 2006-05-08 | 2011-08-10 | 特克特朗尼克公司 | Current sensing circuit for use in a current measurement probe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |