CN201435305Y - Current and voltage transformer module - Google Patents
Current and voltage transformer module Download PDFInfo
- Publication number
- CN201435305Y CN201435305Y CN2009201030920U CN200920103092U CN201435305Y CN 201435305 Y CN201435305 Y CN 201435305Y CN 2009201030920 U CN2009201030920 U CN 2009201030920U CN 200920103092 U CN200920103092 U CN 200920103092U CN 201435305 Y CN201435305 Y CN 201435305Y
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- current
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- voltage transformer
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Abstract
The utility model relates to a current and voltage transformer module, which is characterized in that two or three current transformer units and two or three voltage transformer units are arranged onan insulated casing of the current and voltage transformer module; a lead wire of a secondary current coil of each current transformer unit is led out through a current output pin and connected with an electric-energy meter current metering circuit, and a standard terminal piece is arranged on a current inputting lead wire serving as a current signal inputting terminal; a lead wire of a secondaryvoltage coil of each voltage transformer unit is led out through a voltage output pin and connected with an electric-energy meter follow-up circuit, and current-limiting resistors are respectively connected in series on a voltage-input lead wire Ua, a voltage-input lead wire Ub and a voltage-input lead wire Uc; and the other ends of lead wires of a primary voltage coil are connected in parallel toform a voltage-output lead wire Un. The current and voltage transformer module not only possesses the same high current metering accuracy as an ordinary current transformer, but also measures the voltage signals at a high degree of accuracy.
Description
Technical field
The utility model relates to a kind of ammeter parts of measuring electric current, voltage function simultaneously that have, and is specially a kind of current-voltage transformer module.
Background technology
Existing instrument transformer generally is divided into current transformer and voltage transformer, and current transformer is used for the electronic electric energy meter current circuit and does current measurement, for electric energy computation chip is carried current signal; Voltage transformer is used for the electronic electric energy meter voltage circuit and does voltage measurement, for electric energy computation chip is carried voltage signal, therefore, mostly be in the existing three-phase electric energy meter and use 3 current transformers and 3 voltage transformers (or transformer) respectively, the cost height, volume is big, occupies very large space in electric energy meter., miniaturization development integrated along with electric energy meter, existing current transformer and voltage transformer can not meet the demands.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of current-voltage transformer module of measuring electric current, two kinds of signals of voltage simultaneously that has, voltage transformer in the current-voltage transformer module is the current mode voltage transformer, the input and output electric current is 1: 1, at the input string current-limiting resistance is arranged, by regulating the current-limiting resistance size, thereby be applicable to different electric pressures, output end voltage is regulated output voltage values by sampling resistor size in the change electric energy meter subsequent conditioning circuit.
The utility model adopts following technical scheme:
The utility model is in the insulation crust of current-voltage transformer module, 2 or 3 current transformer unit and 2 or 3 voltage transformer unit can be set, the lead-in wire of the secondary current coil of each current transformer unit is drawn with electric current output needle pin respectively and is connected electrical energy meter electricity flowmeter amount circuit, electric current input lead as the current signal input is provided with the standard terminal plate, the lead-in wire of the secondary voltage coil of each voltage transformer unit is drawn by voltage output stitch respectively and is connected the electric energy meter subsequent conditioning circuit, voltage input lead Ua, voltage input lead Ub, the current-limiting resistance of connecting respectively on the voltage input lead Uc, the lead-in wire other end of primary voltage coil connect together and constitute voltage input lead Un; Current transformer unit, voltage transformer unit, current-limiting resistance are encapsulated in the insulation crust by the epoxy resin one, and the position of the installing hole of reserving on the position of electric current output stitch and voltage output stitch and the electric energy meter pcb board is corresponding setting.
About summation current transformer unit, the utility model voltage transformer unit is in insulation crust, about or front and back be provided with.
The utility model good effect is as follows:
The utility model is a kind of current-voltage transformer module of measuring electric current, two kinds of signals of voltage simultaneously that has, voltage transformer in the current-voltage transformer module is the current mode voltage transformer, the input and output electric current is 1: 1, at the input string current-limiting resistance is arranged, by regulating the current-limiting resistance size, thereby be applicable to different electric pressures, output end voltage is regulated output voltage values by sampling resistor size in the change electric energy meter subsequent conditioning circuit.
The utility model not only has the very high metering current accuracy of general current transformer, all right high accuracy measurement voltage signal, resistance, the current transformer unit, the voltage transformer unit uses epoxy encapsulation in an insulation shell, not only having solved general instrument transformer only can provide the defective of single current signal or single voltage signal, and it is little to take the electric energy meter space, signal stabilization, the accuracy height, cost is low, the utility model stitch is drawn, and directly is welded on the PCB circuit board, and is easy for installation, the interior wiring of electric energy meter is more become rationally, help the miniaturization of electric energy meter.
Description of drawings
Accompanying drawing 1 is the utility model principle schematic;
Accompanying drawing 2 is the utility model structural representation;
Accompanying drawing 3 is looked outside drawing for the utility model left side.
In the accompanying drawings: 1 current-voltage transformer module, 2 voltages output stitch, 3 insulation crusts, 4 voltage transformer unit, 5 electric currents output stitch, 6 voltage input lead Un, 7 voltage input lead Uc, 8 voltage input lead Ub, 9 voltage input lead Ua, 10 electric current input leads, 11 current-limiting resistances, 12 current transformer unit.
Embodiment
The utility model is built-in 2 or 3 current transformer unit and 2 or 3 voltage transformer unit in the insulation shell of current transformer.Each current transformer unit is made of primary current coil, iron core, secondary current coil, isolate fully between primary current coil and secondary current coil, the lead-in wire of secondary current coil is drawn with stitch respectively, directly be welded on the PCB circuit board, for the electric energy meter chip provides current signal, the lead-in wire of primary current coil has the standard terminal plate, as the current signal input; Each voltage transformer unit is made of primary voltage coil, secondary voltage coil, iron core, primary voltage coil and secondary voltage coil are isolated fully, the lead-in wire of secondary voltage coil is drawn with stitch respectively, directly be welded on the PCB circuit board, sampling resistor with the electric energy meter subsequent conditioning circuit, for chip provides voltage signal, the current-limiting resistance of connecting respectively on the lead-in wire one end Ua of primary voltage coil, Ub, the Uc, the lead-in wire other end of primary voltage coil connects together and is Un.
About each summation current transformer unit, voltage transformer unit of the utility model can be, about or front and back be provided with.
Accompanying drawing 1,2,3 is an embodiment of the present utility model, shown in accompanying drawing 1,2,3, the utility model is in insulation crust 3, current transformer unit 12 is made of primary current coil, iron core, secondary current coil, isolate fully between primary current coil and secondary current coil, the lead-in wire of secondary current coil is drawn with electric current output needle pin 5 respectively, separately separate connection electrical energy meter electricity flowmeter amount circuit, for the electric energy meter chip provides current signal, the electric current input lead
Have the standard terminal plate, as the current signal input; Voltage transformer unit 4 is made of primary voltage coil, iron core, secondary voltage coil, primary voltage coil and secondary voltage coil are isolated fully, the lead-in wire of secondary voltage coil is drawn with voltage output needle pin 2 respectively, connect the electric energy meter subsequent conditioning circuit, by the sampling resistor of subsequent conditioning circuit, for the electric energy meter chip provides voltage signal.
In every current-voltage transformer module of the utility model 12 or 3 current transformer unit 12 and 2 or 3 voltage transformer unit 4 can be set, can satisfy the different requirements of phase three-wire three and three-phase and four-line, and isolate mutually between different current transformers unit 12 and the voltage transformer unit 4, adopt the embedding of epoxy resin one during production, do not have the friction of colliding with between each mutual inductor unit, realize good insulation performance.
Shown in accompanying drawing 1,2,3, in an embodiment, current-voltage transformer module 1 is conjuncted setting, has three current transformer unit 12 and three voltage transformer unit 4 compositions.The lead-in wire of the secondary current coil of each current transformer unit 12 is drawn with electric current output needle pin 5 respectively, separate connection electrical energy meter electricity flowmeter amount circuit separately, for the electric energy meter chip provides current signal, electric current input lead 6 has the standard terminal plate, as the current signal input; The lead-in wire of the secondary voltage coil of each voltage transformer unit 4 is drawn with voltage output needle pin 2 respectively, connect the electric energy meter subsequent conditioning circuit, sampling resistor by subsequent conditioning circuit, for the electric energy meter chip provides voltage signal, the current-limiting resistance 11 of connecting respectively on voltage input lead Ua9, voltage input lead Ub8, the voltage input lead Uc7, the lead-in wire other end of primary voltage coil connects together and is voltage input lead Un6.By epoxy resin current transformer unit 12, voltage transformer unit 4, current-limiting resistance 11 one are encapsulated in the insulation crust 3 during production, the installing hole of reserving on the position of electric current output stitch 5 and voltage output stitch 2 and the electric energy meter pcb board is supporting, makes things convenient for electric energy meter to install.
Claims (2)
1, a kind of current-voltage transformer module, it is characterized in that in the insulation crust (3) of current-voltage transformer module (1), 2 or 3 current transformer unit (12) and 2 or 3 voltage transformer unit (4) can be set, the lead-in wire of the secondary current coil of each current transformer unit (12) uses electric current output needle pin (5) to draw connection electrical energy meter electricity flowmeter amount circuit respectively, as the electric current input lead of current signal input
Be provided with the standard terminal plate, the lead-in wire of the secondary voltage coil of each voltage transformer unit (4) is drawn by voltage output stitch (2) respectively and is connected the electric energy meter subsequent conditioning circuit, the current-limiting resistance (11) of connecting respectively on voltage input lead Ua (9), voltage input lead Ub (8), the voltage input lead Uc (7), the lead-in wire other end of primary voltage coil connect together and constitute voltage input lead Un (6); Current transformer unit (12), voltage transformer unit (4), current-limiting resistance (11) are encapsulated in the insulation crust (3) by the epoxy resin one, and the position of the installing hole of reserving on the position that electric current output stitch (5) and voltage are exported stitch (2) and the electric energy meter pcb board is corresponding setting.
2, a kind of current-voltage transformer module according to claim 1, it is characterized in that summation current transformer unit, voltage transformer unit (12) (4) in insulation crust (3), be about, about or front and back be provided with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201030920U CN201435305Y (en) | 2009-06-03 | 2009-06-03 | Current and voltage transformer module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201030920U CN201435305Y (en) | 2009-06-03 | 2009-06-03 | Current and voltage transformer module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201435305Y true CN201435305Y (en) | 2010-03-31 |
Family
ID=42054120
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201030920U Expired - Lifetime CN201435305Y (en) | 2009-06-03 | 2009-06-03 | Current and voltage transformer module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201435305Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104637663A (en) * | 2015-03-02 | 2015-05-20 | 国网四川省电力公司成都供电公司 | Integrated multi-transformation-ratio transformer and data collection method thereof |
| CN104769443A (en) * | 2012-11-26 | 2015-07-08 | 三菱电机株式会社 | Electric current detection device |
| CN105097256A (en) * | 2014-05-21 | 2015-11-25 | 朱佳瑞 | Voltage current transformer and manufacturing method |
| CN105575642A (en) * | 2016-02-29 | 2016-05-11 | 济南铂晶电子科技有限公司 | Three-phase integrated voltage transformer internally provided with resistors |
| CN111108569A (en) * | 2018-08-28 | 2020-05-05 | 株式会社高本技术 | Independent printed circuit board current transformer device suitable for circuit breaker instantaneous current detection |
-
2009
- 2009-06-03 CN CN2009201030920U patent/CN201435305Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104769443A (en) * | 2012-11-26 | 2015-07-08 | 三菱电机株式会社 | Electric current detection device |
| CN104769443B (en) * | 2012-11-26 | 2017-09-01 | 三菱电机株式会社 | Current sensing means |
| CN105097256A (en) * | 2014-05-21 | 2015-11-25 | 朱佳瑞 | Voltage current transformer and manufacturing method |
| CN104637663A (en) * | 2015-03-02 | 2015-05-20 | 国网四川省电力公司成都供电公司 | Integrated multi-transformation-ratio transformer and data collection method thereof |
| CN105575642A (en) * | 2016-02-29 | 2016-05-11 | 济南铂晶电子科技有限公司 | Three-phase integrated voltage transformer internally provided with resistors |
| CN111108569A (en) * | 2018-08-28 | 2020-05-05 | 株式会社高本技术 | Independent printed circuit board current transformer device suitable for circuit breaker instantaneous current detection |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Current and voltage transformer module Effective date of registration: 20160531 Granted publication date: 20100331 Pledgee: Bank of China, Limited by Share Ltd, Xinji branch Pledgor: Hebei Shenke Electronics Co., Ltd. Registration number: 2016130000007 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100331 |
|
| CX01 | Expiry of patent term | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20200825 Granted publication date: 20100331 Pledgee: Bank of China, Limited by Share Ltd, Xinji branch Pledgor: HEBEI SHENKE ELECTRONICS Co.,Ltd. Registration number: 2016130000007 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right |