CN2403027Y - Fraudulent use avoiding arrangement for KWH meter - Google Patents
Fraudulent use avoiding arrangement for KWH meter Download PDFInfo
- Publication number
- CN2403027Y CN2403027Y CN 99258588 CN99258588U CN2403027Y CN 2403027 Y CN2403027 Y CN 2403027Y CN 99258588 CN99258588 CN 99258588 CN 99258588 U CN99258588 U CN 99258588U CN 2403027 Y CN2403027 Y CN 2403027Y
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- CN
- China
- Prior art keywords
- circuit
- fraudulent use
- triode
- electricity
- kwh meter
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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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- Burglar Alarm Systems (AREA)
Abstract
The utility model discloses a fraudulent use avoiding arrangement for KWH meter which uses an inner voltage coil L winded with a secondary winding L1 as a power or is serially connected with a pressure reducing circuit connected by a resistor and a capacitance in series on the fire wire receiving end of a voltage coil L. Then the fraudulent use avoiding arrangement for KWH meter is rectified through a bridge type circuit D 1 and is regulated through a voltage regulator IC 1, and the fraudulent use avoiding arrangement for KWH meter is connected with a light-operated magnetism charging and discharging circuit which uses a photoelectric coupler IC 2, a magnetic latching relay JM and transistors BG 1, BG 2 and BG 3 as kernel and a static photoelectric monitoring control circuit which uses two control two optical couplers IC 3 as kernel. The fraudulent use avoiding arrangement for KWH meter has a simple circuit, and the circuit doesn't have power consumption in normal working without influencing the degree of accuracy of the fraudulent use avoiding arrangement for KWH meter, and the fraudulent use avoiding arrangement for KWH meter can prevent every electric larceny behavior.
Description
The utility model relates to a kind of watt-hour meter, specifically a kind of ammeter anti-electricity-theft device.
The stealing mode comprises " line one ground ", " take off and collude ", " fire zero exchange ", " exchange of turnover fire ", " inclination " etc.Existing power-steeling preventing electric meter all adopts zero-sequence transformer to detect, and operating circuit is complicated, and anti-interference is relatively poor, maybe can only prevent one to two kind of stealing mode.Heating during common relay work is also generated heat during controllable silicon work, consumed energy, and controllable silicon job insecurity when low temperature, and volume is big, cost is high, is difficult for installing.
The purpose of this utility model is to provide a kind of circuit structure simple, does not have power consumption during operate as normal substantially, can prevent the ammeter anti-electricity-theft device of all electricity filching behaviors.
For achieving the above object, ammeter anti-electricity-theft device of the present utility model, it utilizes, and potential winding adds around secondary winding as power supply in the former table, after the bridge rectifier voltage stabilizing, in parallel again is the light-operated degaussing circuit of core and the light-operated charge circuit that is made of two triodes that is connected with magnetic latching relay with photoelectrical coupler, magnetic latching relay, triode, with light-operatedly disappear, charge circuit is connected, and to control two photo-couplers with two be the static light pyroelectric monitor control circuit of core.
Another technical scheme is: be connected with anti-electricity-theft device on former table potential winding inlet wire, after the resistance-capacitance depressurization circuit step-down of resistance and electric capacity parallel connection, bridge rectifier voltage stabilizing, in parallel again is the light-operated degaussing circuit of core and the light-operated charge circuit that is made of two triodes that is connected with magnetic latching relay with photoelectrical coupler, magnetic latching relay, triode, with light-operatedly disappear, charge circuit is connected, and to control two photo-couplers with two be the static light pyroelectric monitor control circuit of core.
Photoelectricity disappears because technique scheme adopts after with power supply step-down, rectification, voltage stabilizing again, charge circuit and static light pyroelectric monitor circuit, so there is not power consumption during ammeter anti-electricity-theft device operate as normal substantially, there is not the circuit heating problem, do not influence the degree of accuracy of watt-hour meter yet, antijamming capability is strong, can be in any rugged environment operate as normal, can prevent that " line one ground ", " take off and collude ", " fire zero exchange ", " exchange of turnover fire ", " inclination " from waiting all electricity filching behaviors.This device circuit is simple in structure, and element is few, and volume is little, is convenient to the modularization encapsulation, is easy to be installed in the table, and cost is no more than 15 yuan, and producer and user are acceptant, are applicable to various ammeters.
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Fig. 1 is the synoptic diagram of the utility model ammeter anti-electricity-theft device;
Fig. 2 is the circuit diagram of first kind of embodiment of ammeter anti-electricity-theft device shown in Figure 1;
Fig. 3 is the circuit diagram of second kind of embodiment of ammeter anti-electricity-theft device shown in Figure 1;
Fig. 4 is the connection layout of burglar-proof electric circuit and ammeter.
By Fig. 1, Fig. 2 as seen, the utility model ammeter anti-electricity-theft device is installed in the ammeter 7, and potential winding L adds around secondary winding L in this device utilization table
1As power supply, through bridge rectifier circuit D
1Use voltage stabilizer IC after the rectification
1Voltage stabilizing, in parallel again with photoelectrical coupler IC
2, magnetic latching relay JM, triode BG
1Be the light-operated degaussing circuit of core, this circuit also comprises diode in series D
2, capacitor C
1And C
2, in capacitor C
1And C
2Contact between connect photoelectrical coupler IC
2, photoelectrical coupler IC
2Pass through resistance R
1With voltage stabilizer IC
1Connect, pass through resistance R again
2JM is connected with magnetic latching relay, and relay J M is by diode D
3And D
4With voltage stabilizer IC
1Connect photoelectrical coupler IC
2Also with triode BG
1Base stage connect triode BG
1Collector be connected emitter and bridge rectifier circuit D with relay J M
1Form the loop, capacitor C
3Be connected in parallel on diode D
3And D
4Contact on.What be connected with relay J M has a triode BG
2And BG
3, they constitute photoelectricity charge circuit, triode BG
2Collector be connected with relay J M, base stage and triode BG
3Collector connect, the contact at these the two poles of the earth also passes through resistance R
3With diode D
4Series connection, triode BG
3Base stage connect by two controls, two photo-coupler IC
3Be the static light pyroelectric monitor control circuit of core, two controls, two photo-coupler IC
3Also with resistance R
3The series connection, also respectively with photoelectrical coupler IC
2With triode BG
1Base stage connect two controls, two photo-coupler IC
3Series capacitance C
4Back ground connection, resistance in series R
4After draw terminals 2, resistance in series R
5The back is connected triode BG with zero-power line terminals 4
2And BG
3Emitter be connected on altogether on the terminals 5 that magnetize.Also be in series with mercury transversal switch K between the hot terminal 0 of potential winding L and the terminals 2 in table, with dashed lines marks among the figure.Voltage stabilizer IC
1Can select 7812 or 7,815 two kinds of models for use.Magnetic latching relay JM is a bistable relay.
Fig. 3 is another kind of burglar-proof electric circuit figure, and it draws lead on the potential winding hot terminal 0 of watt-hour meter, and series connection is by the resistance-capacitance depressurization circuit of resistance R and capacitor C parallel connection on it, and all the circuit with shown in Figure 2 is identical for circuit and element connected mode thereafter.
Referring to the burglar-proof electric circuit of Fig. 4 and the connection layout of ammeter, power firestreak one tunnel and the interior current coil L of table
2Connect, the one tunnel is connected with the hot terminal 0 of the interior potential winding L of table.Bistable magnetic guard relay JM is by two relay J M
1And JM
2Constitute.Relay J M
1Contact be connected JM with terminals 2 on the burglar-proof electric circuit
1Contact 3 and table in current coil L
2Connect, contact 1 inserts termination load R as live wire
0, load R
0Loop and relay J M
2Contact 6 connect JM
2Another contact be connected with the terminals 5 that magnetize on the burglar-proof electric circuit, also have a contact to connect zero-power line terminals 4.
The principle of work of ammeter anti-electricity-theft device of the present utility model is as follows: with terminals 0,4,5 energized of anti-electricity-theft device, by the table in potential winding add around secondary or by the step-down of resistance-capacitance depressurization circuit after bridge rectifier circuit D
1Rectification, the voltage stabilizer voltage stabilizing is to capacitor C
1, C
2, C
3Charge as standby power supply.The while resistance R
3Be triode BG
2Provide base bias, triode BG
2Conducting, bistable magnetic guard relay JM is converted to another kind of stable state by a kind of stable state, connects feed circuit, cuts off simultaneously to magnetize terminals 5 and keep this kind state, the resistance R in the static light pyroelectric monitor control circuit
4, R
5And voltage stabilizer IC
1, photoelectrical coupler IC
2All do not work, only be in the static monitoring of no power consumption.
Since when a variety of causes has a power failure, the feed circuit non-transformer, and current potential reduces, standby power supply C
1, C
2By voltage stabilizer IC
1To resistance R
1Discharge, voltage stabilizer IC
1Turn-on transistor BG
1, standby power supply C
3By bistable magnetic guard relay JM, triode BG
1Form loop discharge demagnetization, JM is converted to the state that cuts off feed circuit by connection, and keeps this state by demagnetization, when power supply is sent a telegram here, repeats said process.
Further specify principle of work of the present utility model below in conjunction with several stealing modes.
1, a line one ground stealing.Change direct ground connection into owing to cut off zero line during stealing, be in power supply and be disconnected state, bistable magnetic guard relay JM is by demagnetization, burglar-proof electric circuit does not have current supply circuit, can not magnetize again and connect power supply, though burglar-proof electric circuit does not consume energy, there is a noble potential to keep degaussing circuit not work, so can prevent a line one ground stealing mode.
2, take off and collude stealing.Because hot terminal itself is exactly the feeder ear of burglar-proof electric circuit, also is feeder ear during with resistance-capacitance depressurization, as long as cut off a supply lines of burglar-proof electric circuit, all can demagnetization consequently cut off feed circuit, so can prevent a line one ground and take off the stealing mode of colluding.
3, fire zero connects switch exchange stealing.When live wire changes the zero line position, the resistance R of static light pyroelectric monitor control circuit
5Must be electric, by voltage stabilizer IC
1, capacitor C
4Form loop, photoelectrical coupler IC with watchcase
2Triggering and conducting triode BG
3, short circuit triode BG
2Bias voltage, BG
2No-bias can not conducting, and the bistable magnetic guard relay JM coil that magnetizes can not form the loop, and the energized that can not magnetize, photoelectrical coupler IC simultaneously
2Connect triode BG
1Bias voltage, demagnetization work.So can prevent Live line Zero line exchange stealing mode.
4, turnover live wire exchange stealing.During the exchange of turnover live wire, resistance R in the observation circuit
4Must be electric, principle of work and fire zero are identical when connecing switch exchange stealing.Resistance R
4Be connected on the terminals 2, during operate as normal, wiring 2 is cut off, and does not influence operate as normal.
5, inclination stealing.During the inclination stealing, mercury cut-off K energized and resistance R
4, resistance R
4Must be electric, its principle of work is identical when exchanging stealing with fire zero.Because the inclination stealing is few, power-steeling quantity is little, therefore, can increase and decrease this function as required.
Claims (4)
1, a kind of ammeter anti-electricity-theft device is characterized in that: this device utilizes the interior potential winding L of former table to add around secondary winding L
1As power supply, through bridge rectifier circuit D
1Rectification, voltage stabilizer IC
1After the voltage stabilizing, in parallel again with photoelectrical coupler IC
2, magnetic latching relay JM, triode BG
1For the light-operated degaussing circuit of core be connected with magnetic latching relay JM by triode BG
2, BG
3The light-operated charge circuit that constitutes and with saidly light-operatedly disappear, charge circuit is connected controls two photo-coupler IC with two
3Static light pyroelectric monitor control circuit for core.
2, ammeter anti-electricity-theft device according to claim 1 is characterized in that: be in series with mercury transversal switch K in the wiring (2) of the live wire of potential winding L (0) and said static light pyroelectric monitor control circuit in said table.
3, a kind of ammeter anti-electricity-theft device is characterized in that: this device is connected on the inlet wire of potential winding in the former table, and its live wire (0) is gone up the reduction voltage circuit of series connection by resistance R and capacitor C parallel connection, through bridge rectifier circuit D
1Rectification, voltage stabilizer IC
1After the voltage stabilizing, in parallel again with photoelectrical coupler IC
2, magnetic latching relay JM, triode BG
1For the photoelectricity degaussing circuit of core be connected with magnetic latching relay JM by triode BG
2, BG
3The photoelectricity charge circuit that constitutes and disappear with said photoelectricity, charge circuit is connected controls two photo-coupler IC with two
3Static light pyroelectric monitor control circuit for core.
4, ammeter anti-electricity-theft device according to claim 3 is characterized in that: be in series with mercury transversal switch K in the wiring (2) of the live wire of potential winding L (0) and said static light pyroelectric monitor control circuit in said table.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99258588 CN2403027Y (en) | 1999-12-24 | 1999-12-24 | Fraudulent use avoiding arrangement for KWH meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99258588 CN2403027Y (en) | 1999-12-24 | 1999-12-24 | Fraudulent use avoiding arrangement for KWH meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2403027Y true CN2403027Y (en) | 2000-10-25 |
Family
ID=34041144
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99258588 Expired - Fee Related CN2403027Y (en) | 1999-12-24 | 1999-12-24 | Fraudulent use avoiding arrangement for KWH meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2403027Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108226593A (en) * | 2016-12-15 | 2018-06-29 | 成都长城开发科技有限公司 | Electric energy meter and its anti-electricity-theft detection method |
-
1999
- 1999-12-24 CN CN 99258588 patent/CN2403027Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108226593A (en) * | 2016-12-15 | 2018-06-29 | 成都长城开发科技有限公司 | Electric energy meter and its anti-electricity-theft detection method |
| CN108226593B (en) * | 2016-12-15 | 2024-04-19 | 成都长城开发科技股份有限公司 | Electric energy meter and electricity larceny prevention detection method thereof |
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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 |