CN1920579A - Electric energy meter - Google Patents
Electric energy meter Download PDFInfo
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- CN1920579A CN1920579A CN 200610139485 CN200610139485A CN1920579A CN 1920579 A CN1920579 A CN 1920579A CN 200610139485 CN200610139485 CN 200610139485 CN 200610139485 A CN200610139485 A CN 200610139485A CN 1920579 A CN1920579 A CN 1920579A
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Abstract
The invention relates to a new electric energy meter for recognizing the current change of electric wire, wherein inside the insulated frame, the annular plastic tube support is coiled with secondary enameled wire coils; two connectors are scraped with enamel layer to be welded on two wiring posts, to be arranged inside insulated plastic frame, to pack the epoxide resin; the external testing circuit is connected one wiring post, 20Komega standard resistance, Cs5460A metering chip, digital display, and another wiring post of secondary coil resistance. When the first electric mother row is through the central hole of current inductance, and when the electric wire has the first current, the secondary coil will induce relative current valve, to display relative valve on Cs5460A metering chip and digital display, to instruct the current of first electric wire.
Description
Affiliated technical field
Patent of the present invention relates to the proving installation of current change in a kind of induction power circuit.That especially can discern current change in the power circuit is improved to the electric energy meter that energy-conservation, novel current mutual inductor with hollow coil, DC voltage-stabilizing working power, CW7800, resistance and Cs5460A computation chip and digital display type instrument etc. are formed by former electric energy meter on primary current mutual inductor basis.
Background technology:
At present, known electric energy meter is by attached data by shell, current transformer, charge system, structure, in the plastic casing by the ring-like silicon sheet core of core technology technology, wrap in the outer insulation course of ring-like silicon sheet core, secondary enameled wire loops, secondary enameled wire loop binding post etc. outside insulation course are formed.Power bus-bar row is by the central hole of current transformer, and the secondary connection post connects the indication reometer, generally does control, protection, measures usefulness.After line of electric force passes through primary current, sense the corresponding magnitude of current at secondary coil, on reometer, show, when the current transformer of general big electrorheological ratio passes through rated current at a line of electric force, consumed power at the loaded line of secondary coil winding and reometer will reach 5～40VA, the heating of current transformer, make the power distribution cabinet and the instrument volume of assembling bigger, be unfavorable for the microminiaturization of instrument, standardization, the quality quality of while silicon sheet core, promptly when primary current continued to rise, secondary current was in the characteristic of state of saturation, because general iron core all has coercive force to exist, so the magnetic flux surge behind the core sataration, may cause very big remanent magnetism in iron core, before this remanent magnetism is not by the working current degaussing, to make current transformer increase error, and directly influence the accuracy and the sensitivity of data, testing tool also will be with external working power.
Summary of the invention:
In order to overcome existing current transformer when a line of electric force passes through rated current, because the quality quality of silicon sheet core, when primary current surpasses rated current, saturated phenomenon appears in the electric current in the secondary load, and promptly when primary current continued to rise, secondary current was in state of saturation, directly influence the accuracy and the sensitivity of data, patent of the present invention provides a kind of electric energy meter, and this electric energy meter can not only be measured current change, and can provide power autonomous and electric energy meter that form.
Patent of the present invention solves the technical scheme that its technical matters adopts: in insulation crust, the used enameled wire of the secondary hollow coil that is wound with on the ring-like plastic pipe support directly is the end that 0.25mm enameled wire loop, the electrode among the 0.08-0.27mm connects a 20K Ω measuring resistance, signal input part one binding post of another termination one Cs5460A computation chip of resistance and digital display type instrument, another binding post of signal input part of Cs5460A computation chip and digital display type instrument and another binding post of secondary coil winding join; Ring-like silicon sheet core correct position cuts a slit, wrap in the outer insulation course of ring-like silicon sheet core, used enameled wire outside insulation course directly is the 0.45mm secondary enameled wire loop among the 0.21-0.86mm, secondary enameled wire loop two electrodes respectively with rectification circuit input end, positive supply output terminal and electric capacity one electrode, CW7800 input end Xiang Even connects, negative power end and electric capacity one electrode, CW7800 one electrode, electric capacity one electrode, the digital display type instrument negative electrode Xiang Even of Cs5460A computation chip connects another electrode of CW7800 output terminal and electric capacity, Cs5460A computation chip and digital display type instrument positive electrode Ya Even connect.Make the D.C. regulated power supply of secondary output current, Cs5460A computation chip and digital display type instrument or other working powers that needs by forming by rectifier cell, CW7800, electric capacity etc.D.C. regulated power supply, hollow coil and silicon sheet core coil are side by side, in the equidirectional plastic casing that is placed on same insulation, after connecing by each component Zhun Que Even of figure, use epoxy encapsulation.After a power bus-bar row passes the central hole of novel current mutual inductor with hollow coil, after line of electric force passes through primary current, sense the corresponding magnitude of current at the hollow secondary coil, silicon sheet core Current Transformer Secondary coil provides stabilized voltage supply, the magnitude of voltage that shows corresponding proportion on the electric energy meter that highly sensitive Cs5460A computation chip and digital display type instrument etc. are formed reaches the electric current of a power circuit of indication and power autonomous purpose.
The beneficial effect of patent of the present invention is: can be when the test measured object is electric current, the defective and the deficiency of primary current mutual inductor have been improved, only on primary current mutual inductor basis, increase DC voltage-stabilizing working power, CW7800, resistance and Cs5460A computation chip and digital display type instrument in the entire product structure, simple in structure.
Description of drawings:
Each embodiment further specifies patent of the present invention below in conjunction with accompanying drawing:
Fig. 1 is the stabilized voltage supply principal section core technology technical construction circuit theory diagrams that the silicon sheet core current transformer of the iron-core coil current transformer after improving is formed.
Fig. 2 is the longitudinal profile core technology technical construction circuit theory diagrams of the signal sampling sensor formed of the signal coil of the current mutual inductor with hollow coil after improving.
Fig. 3 is the side sectional structural map of combination back product.
Fig. 4 is the vertical view of combination back product.
Fig. 5 is that the three-phase electric energy meter master that is combined into of three cover hollow coils and silicon sheet core coil looks sectional structural map.
Among Fig. 1, Fig. 2,1. line of electric force perforation center, 2.3.8.9. secondary coil winding is drawn the end of a thread, 4. ring-like silicon sheet core, 5. Jue Yuan plastic casing 6. wraps in the outer insulation course of silicon sheet core, 10. the ring-like plastic pipe support of hollow insulation, 7.11. secondary enameled wire loop, 12. top covers, 13. slit, 14. divider resistance, 15.16.Cs5460A computation chip signal binding post, 17. positive pole of stabilized voltage supply, 18. stabilized voltage supply negative electrode, 19.Cs5460A computation chip and digital display type instrument.
Embodiment:
Among Fig. 1, in insulation crust, energy-conservation, novel current mutual inductor with hollow coil central hole (1), silicon sheet core (4) cutting one slit (13), be surrounded by insulation course (6) outward, being wound with enameled wire more directly is 0.45mm secondary enameled wire loop (7), secondary coil (2.3) two electrodes respectively with rectification circuit input end, positive supply output terminal and electric capacity one electrode, CW7800 Lose goes into Duan Xiang Even and connects, negative power end and electric capacity one electrode, CW7800 one electrode, electric capacity one electrode, (18) Xiang Even connect, another electrode of CW7800 output terminal and electric capacity for Cs5460A computation chip and digital display type instrument negative electrode, (17) Even connect for Cs5460A computation chip and digital display type instrument positive electrode.Make the D.C. regulated power supply of secondary output current, supply Cs5460A computation chip and digital display type instrument (19) or other to need the working power of occasion by forming by rectifier cell, CW7800, electric capacity etc.
Among Fig. 2, in insulation crust, energy-conservation, novel current mutual inductor with hollow coil central hole (1), being wound with enameled wire on the ring-like plastic pipe support (10) directly is the end that 0.25mm secondary enameled wire loop (11), an electrode (9) connect a 20K Ω measuring resistance, one binding post (16) of another termination one Cs5460A signal input part of resistance, another binding post (15) of Cs5460A signal input part joins with another electrode (8) of secondary coil winding.
Among Fig. 3, in insulation crust, D.C. regulated power supply, hollow coil (10) and silicon sheet core coil (4) side by side, in equidirectional plastic housing (5) body that is placed on same insulation, An Tu Even connect finish after, mutually insulated is used epoxy encapsulation.
Among Fig. 4, in insulation crust, D.C. regulated power supply, three cover hollow coils (10) and the subassembly of silicon sheet core coil (4) side by side, in equidirectional plastic housing (5) body that is placed on same insulation An Tu Even connect finish after, mutually insulated, need encapsulation with epoxy resin with border factually, form three-phase electric energy meter.
During Fig. 1,2 merges, in insulation crust, D.C. regulated power supply, a cover hollow coil (10) and the subassembly of silicon sheet core coil (4) side by side, in equidirectional plastic housing (5) body that is placed on same insulation An Tu Even connect finish after, mutually insulated, need encapsulation with epoxy resin with border factually, form single-phase electric energy meter.
Claims (8)
1. the automaton that can discern current change in the power circuit---electric energy meter, in insulation crust, the secondary enameled wire loop, divider resistance, D.C. regulated power supply, Cs5460A computation chip and digital display type instrument, electrical connection in order, it is characterized in that: Cs5460A computation chip and digital display type instrument one electrode and divider resistance one Duan electrical connection, the divider resistance other end and secondary enameled wire loop one Dian Ji electrical connection, another electrode of secondary enameled wire connects Cs5460A computation chip and digital display type instrument one electrode, silicon sheet core secondary enameled wire loop two electrodes respectively with rectification circuit input end Even Xiang, positive supply output terminal and electric capacity one electrode, CW7800 Lose goes into Duan Xiang Even and connects, negative power end and electric capacity one electrode, CW7800 one electrode, electric capacity one electrode, Cs5460A computation chip and digital display type instrument negative supply Dian Ji Xiang Even connect the CW7800 output terminal, another electrode of electric capacity, Cs5460A computation chip and digital display type instrument positive electrode Xiang Even connect.
2. electric energy meter according to claim 1 is characterized in that: the sampled signal secondary coil is wound on the ring-like plastic pipe support of insulation.
3. electric energy meter according to claim 1, it is characterized in that: the ring-like silicon sheet core of current transformer cuts a slit at correct position, be surrounded by insulation course outward, be wound with secondary coil, make the D.C. regulated power supply of secondary output current, the working power that supplies Cs5460A computation chip and digital display type instrument or other occasions to need by forming by rectifier cell, CW7800, electric capacity etc.
4. electric energy meter according to claim 1 is characterized in that: D.C. regulated power supply, hollow coil and silicon sheet core coil are side by side, in the equidirectional plastic casing that is placed on same insulation, connect An Tu Even and to use epoxy encapsulation after finishing.
5. electric energy meter according to claim 1 is characterized in that: Cs5460A computation chip and digital display type instrument are installed in current transformer top secondary lead wires near position again.
6. electric energy meter according to claim 1, it is characterized in that: in insulation crust, the subassembly of D.C. regulated power supply, three cover hollow coils and silicon sheet core coils side by side, equidirectional interior of plastic casing that is placed on same insulation An Tu Even connect finish after, mutually insulated, need encapsulation with epoxy resin with border factually, form three-phase electric energy meter.
7. electric energy meter according to claim 1, it is characterized in that: in insulation crust, the subassembly of D.C. regulated power supply, cover hollow coil and a silicon sheet core coil side by side, equidirectional interior of plastic casing that is placed on same insulation An Tu Even connect finish after, mutually insulated, need encapsulation with epoxy resin with border factually, form single-phase electric energy meter.
8. electric energy meter according to claim 1 is characterized in that: the used enameled wire of hollow coil directly is 0.08-0.27mm, and the used enameled wire of silicon sheet core secondary enameled wire loop directly is 0.21-0.86mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610139485 CN1920579A (en) | 2006-09-23 | 2006-09-23 | Electric energy meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610139485 CN1920579A (en) | 2006-09-23 | 2006-09-23 | Electric energy meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1920579A true CN1920579A (en) | 2007-02-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610139485 Pending CN1920579A (en) | 2006-09-23 | 2006-09-23 | Electric energy meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1920579A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102222888A (en) * | 2011-06-02 | 2011-10-19 | 浙江豪顿电气有限公司 | Lead-out end phase-failure protection method for leakage circuit breaker |
| CN117330813A (en) * | 2023-09-27 | 2024-01-02 | 苏州万龙电气集团股份有限公司 | Hollow current measurement method, hybrid current transformer and circuit breaker |
-
2006
- 2006-09-23 CN CN 200610139485 patent/CN1920579A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102222888A (en) * | 2011-06-02 | 2011-10-19 | 浙江豪顿电气有限公司 | Lead-out end phase-failure protection method for leakage circuit breaker |
| CN117330813A (en) * | 2023-09-27 | 2024-01-02 | 苏州万龙电气集团股份有限公司 | Hollow current measurement method, hybrid current transformer and circuit breaker |
| CN117330813B (en) * | 2023-09-27 | 2024-05-14 | 上海磊跃自动化设备有限公司 | Hollow current measurement method, hybrid current transformer and circuit breaker |
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