CN201274418Y - Electricity limiter capable of presetting amplitude of current - Google Patents
Electricity limiter capable of presetting amplitude of current Download PDFInfo
- Publication number
- CN201274418Y CN201274418Y CNU2008201877716U CN200820187771U CN201274418Y CN 201274418 Y CN201274418 Y CN 201274418Y CN U2008201877716 U CNU2008201877716 U CN U2008201877716U CN 200820187771 U CN200820187771 U CN 200820187771U CN 201274418 Y CN201274418 Y CN 201274418Y
- Authority
- CN
- China
- Prior art keywords
- electricity
- contactor
- current
- current transformer
- relay
- 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
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
- Y04S20/242—Home appliances
Landscapes
- Emergency Protection Circuit Devices (AREA)
Abstract
The utility model relates to an electricity limiter capable of pre-setting the magnitude of current, which is used for electricity limitation. The technical scheme is as follows: the electricity limiter comprises an alternating current contactor and a current transformer; wherein, a consumer load is connected with the mains supply through the alternating current contactor and the current transformer; after being rectified by a bridge rectifier, the voltage induced by the secondary side of the current transformer is connected with composite triodes and a relay; and the on-off of the alternating current contactor is controlled by the relay. The utility model has the following advantages: after the consumer uses a high-power energy-consuming electric appliance, such as an electric oven, without authorization, the load current of a circuit can be increased, and the on-off of the composite triodes is controlled by the current transformer, so that the on-off of the alternating current contactor can be controlled; and the electricity limiter, which is mounted at the power inlet side such as a consumer, dormitory and a private factory, can monitor and limit the electricity consumption of the consumer in order to drastically crack down the behavior of stealing electricity and using high-power electric appliances, thus saving energy.
Description
One, technical field:
The utility model relates to a kind of electric power device of rationing the power supply, but particularly relates to a kind of electricity-limiter of preset current size.
Two, background technology:
Our country advocates energy-saving and emission-reduction energetically now, and particularly during the course of the Olympic Games, for guaranteeing to run well the Green Olympics, country emphasizes that hereinafter various places carry out power saving operation.Also doing the work of this respect as power supply department, the proposal every family tries not to use high-power power consumption electrical equipment, sternly hits electricity filching behavior etc. always.
Three, summary of the invention:
The purpose of this utility model is exactly the above-mentioned defective that exists at prior art, but a kind of electricity-limiter of preset current size is provided, and is installed in electric power incoming line sides such as user or dormitory, private savings factory, can monitor, limit user's electricity consumption situation.
Its technical scheme is: comprise the A.C. contactor summation current transformer, customer charge inserts civil power through the A.C. contactor summation current transformer, the voltage of described Current Transformer Secondary side induction connects compound transistor and relay after the rectification of bridge heap, by the switch of relay control A.C. contactor;
When current load circuit increases, the current transformer primary side current increases, sense the also proportional increase of voltage signal of secondary side, through bridge heap bridge rectifier, the voltage on potentiometer reaches the conducting voltage of compound transistor, the compound transistor conducting, the actuating of relay, normally closed contact disconnects the power supply of ac contactor coil, and the A.C. contactor dead electricity is returned, its normally open contact disconnect user power supply stops user's power supply.
The conducting voltage of above-mentioned compound transistor is 1.4V.
Above-mentioned relay connects and is used to indicate the light-emitting diode of electricity consumption excess load, and is provided with the reset button that is used to restore electricity.
The beneficial effects of the utility model are: after the user inserts high-power power consumption electrical equipment privately, as electric furnace etc., current load circuit is increased, whether control the compound transistor conducting by current transformer, and then the switch of control A.C. contactor, be installed in electric power incoming line sides such as user or dormitory, private savings factory, can user's electricity consumption situation be monitored, limit, the energy has been saved in the severe behavior of hitting electricity filching behavior and using high-power electric appliance.
Four, description of drawings:
Accompanying drawing 1 is a circuit connection diagram of the present utility model.
Five, embodiment:
1., transformer T selects 3-5W, 220V/12V in conjunction with the accompanying drawings, the utility model will be further described: element is selected for use and is made:; 2. multiple tube V1, V2 select 3DG27 or 9013 and β 〉=100; 3. relay J is selected the JZX-2F type, and this relay has many docking points, can and connect use contact, to increase contact rating.
Current transformer LH need make by oneself, winding method is: primary coil L1 with Φ 1.2mm enamelled wire on the magnet ring of overall diameter 3cm, thick 0.5cm, wide 0.5cm (also available iron core) around the 6-10 circle, secondary coil winds afterwards L1 to be sealed in the alternating current 220V live wire around 60-100 circle (determining the reliable in action of this circuit) with the enamelled wire of Φ 0.35mm and gets final product.
Its operation principle is: with reference to accompanying drawing 1, customer charge inserts civil power through A.C. contactor C summation current transformer LH.When customer charge does not surpass the electric current predetermined value, the output voltage of the voltage of current transformer LH secondary side induction after bridge heap QL2 rectification can not make compound transistor V1, V2 saturation conduction, relay J is failure to actuate, normally closed contact J1 closure, connect ac contactor coil C, contactor powers up action, its normally open contact C closure, and the user gets electric work.
After the user inserts high-power power consumption electrical equipment privately, as electric furnace etc., current load circuit is increased, be that current transformer LH primary side current increases, sense the also proportional increase of voltage signal of secondary side, through bridge heap bridge rectifier, voltage on potentiometer RW reaches the conducting voltage 1.4V of compound transistor V1, V2, V1, V2 conducting, the relay J action, normally closed contact J1 disconnects the ac contactor coil c-power supply, and the A.C. contactor dead electricity is returned, its its normally open contact C disconnect user power supply stops user's power supply.Simultaneously, relay normally open contact J2 closure, relay J realizes self-sustaining, LED 2 is luminous, indication user's electricity consumption excess load.After having only the user to reduce load, and press reset button FA, just can restore electricity.
The working power of circuit relay electrical equipment J and multiple tube V1, V2 is provided after integrated voltage stabilizer AN7812 voltage stabilizing by transformer T step-down, bridge heap QL1 bridge rectifier again.LED 1 is used for the working power indication.Potentiometer RW is used to regulate the size of restriction load current.
Claims (3)
- But 1, a kind of electricity-limiter of preset current size, it is characterized in that: comprise the A.C. contactor summation current transformer, customer charge inserts civil power through the A.C. contactor summation current transformer, the voltage of described Current Transformer Secondary side induction connects compound transistor and relay after the rectification of bridge heap, by the switch of relay control A.C. contactor;When current load circuit increases, the current transformer primary side current increases, sense the also proportional increase of voltage signal of secondary side, through bridge heap bridge rectifier, the voltage on potentiometer reaches the conducting voltage of compound transistor, the compound transistor conducting, the actuating of relay, normally closed contact disconnects the power supply of ac contactor coil, and the A.C. contactor dead electricity is returned, its normally open contact disconnect user power supply stops user's power supply.
- But 2, the electricity-limiter of preset current size according to claim 1 is characterized in that: the conducting voltage of described compound transistor is 1.4V.
- But 3, the electricity-limiter of preset current size according to claim 1 is characterized in that: described relay connects and is used to indicate the light-emitting diode of electricity consumption excess load, and is provided with the reset button that is used to restore electricity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201877716U CN201274418Y (en) | 2008-08-18 | 2008-08-18 | Electricity limiter capable of presetting amplitude of current |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201877716U CN201274418Y (en) | 2008-08-18 | 2008-08-18 | Electricity limiter capable of presetting amplitude of current |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201274418Y true CN201274418Y (en) | 2009-07-15 |
Family
ID=40884758
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201877716U Expired - Fee Related CN201274418Y (en) | 2008-08-18 | 2008-08-18 | Electricity limiter capable of presetting amplitude of current |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201274418Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104362581A (en) * | 2014-12-05 | 2015-02-18 | 成都安思科技有限公司 | Self-resetting electronic safety circuit |
-
2008
- 2008-08-18 CN CNU2008201877716U patent/CN201274418Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104362581A (en) * | 2014-12-05 | 2015-02-18 | 成都安思科技有限公司 | Self-resetting electronic safety circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090715 Termination date: 20100818 |