CN2166451Y - Anti-stealing electricity device for electric meter - Google Patents
Anti-stealing electricity device for electric meter Download PDFInfo
- Publication number
- CN2166451Y CN2166451Y CN 93224706 CN93224706U CN2166451Y CN 2166451 Y CN2166451 Y CN 2166451Y CN 93224706 CN93224706 CN 93224706 CN 93224706 U CN93224706 U CN 93224706U CN 2166451 Y CN2166451 Y CN 2166451Y
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- CN
- China
- Prior art keywords
- circuit
- electric meter
- electricity
- ammeter
- stealing
- 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
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Abstract
The utility model relates to an anti-stealing electricity device for an electric meter, relating to an electromechanical device used for measuring the time integral of the electric power. Bidirectional thyristor is strung into a supply return circuit. When the bidirectional thyristor is conducted, the circuit is switched on the circuit is cut off vice versa. A trigger signal circuit merged on both ends of the voltage coil of the electric meter and composed of resistance, capacitance, and a zener diode conveys the control signal to the bidirectional thyristor. The anti-stealing electricity device for an electric meter overcomes the disadvantages of complex line, high manufacturing cost, inconvenient installation of the existing anti-stealing electricity device for the electric meter. The anti-stealing electricity device for an electric meter has the advantages of small size and convenient installation, and has the advantage that the electricity stealing phenomenon can be effectively prevented.
Description
A kind of ammeter anti-electricity-theft device relates to the electromechanical assembly that is used to measure the electric power time integral, especially for the device of indication duplicity use.
At present, the anti-electricity-theft device that is used for watt-hour meter is of a great variety, its groundwork process overwhelming majority all is that induction obtains control signal from the potential winding of watt-hour meter or current coil, the break-make of coming electric current on the control load by the control signal start trigger, thus realize preventing the purpose of stealing.Chinese patent 85201011 discloses a kind of " interlocking does not have the open circuit loss watt-hour meter ".It is interchange condition of the inside adjunction boolean's AND algebraically Discr. (AND circuit) in parallel at existing watt-hour meter, allows the current coil of watt-hour meter be parallel on the condition that the exchanges AND circuit in parallel with the potential winding of watt-hour meter after the load series connection again.Whether differentiate its turn-on condition by AND circuit then and meet the demands, whether decision is to the load power supply.Though the generation of stealing electricity phenomenon can be indicated or prevent to this class arrangement on watt-hour meter for avoiding fraudulent use, but still has such shortcoming.The one, control signal is taken from the coil of watt-hour meter, thereby watt-hour meter itself is produced certain influence; The 2nd, circuit is complicated, and required components and parts are more, and volume is bigger, and inconvenience is installed relatively; The 3rd, manufacturing cost is higher.
The purpose of this utility model just provides a kind of circuit simply, only needs a small amount of components and parts just can reach the ammeter anti-electricity-theft device of power-steeling preventing effect.Provide simultaneously that a kind of volume is little, easy for installation, the ammeter anti-electricity-theft device of low cost of manufacture also is one of the purpose of this utility model.
For achieving the above object, adopt such technical scheme: by bidirectional triode thyristor as control element, seal in the current supply circuit of watt-hour meter with load, constitute the silicon controlled trigger signal circuit by resistance, electric capacity and Zener diode, this circuit is attempted by the potential winding two ends of watt-hour meter, and the control utmost point of an end of Zener diode and bidirectional triode thyristor joins.Just often provide trigger voltage by trigger circuit to bidirectional triode thyristor, make the bidirectional triode thyristor conducting, primary power is powered to consumer (load).When not connecting to neutral line of unhook stealing or watt-hour meter takes place, during by the ground wire stealing, the trigger pip circuit quits work, thereby controllable silicon automatic cut-off cut-out power supply stops to power to the load.Has only the watt-hour meter of recovery original state, controllable silicon conducting again.
Ammeter anti-electricity-theft device described in the utility model can prevent some artificial stealing electricity phenomenons effectively, has also simultaneously that circuit is simple, volume is little, easy for installation, advantage of low manufacturing cost.
Fig. 1 is the utility model circuit theory diagrams.
Fig. 2 increases circuit theory diagrams behind the filter network for the utility model.
Fig. 3 is the circuit theory diagrams behind the utility model increase capacity.
Below in conjunction with drawings and Examples the utility model is further described.
As shown in Figure 1, by bidirectional triode thyristor SKG as control element.Current coil (the L of watt-hour meter
1), bidirectional triode thyristor, load form the power supply series loop, so the silicon controlled switching can determine whether electrical network powers to the load.Resistance R
1, R
2, capacitor C
3And Zener diode D constitutes the silicon controlled trigger signal circuit, and wherein an end of Zener diode extremely links to each other with the control of bidirectional triode thyristor, one terminates at R
2With C
3Between.Whole trigger pip circuit is attempted by meter voltage coil (L
2) two ends.When artificial stealing electricity phenomenon took place, the potential winding decompression to the two-way controlled control signal of sending, made it to cut off current supply circuit by the silicon controlled trigger signal circuit.And when potential winding recovered original voltage, controllable silicon also recovered conducting.
To the interference of telecommunication equipment, in current supply circuit, incorporate into when preventing that controllable silicon from triggering by inductance L
3, capacitor C
1, C
2The π filter network of forming is referring to Fig. 2.Also can be by the current coil (L in the watt-hour meter
1) as inductance, same C
1, C
2Form the π filter network together and incorporate current supply circuit into.
In order to make this ammeter anti-electricity-theft device can adapt to more jumbo ammeter, can with bidirectional triode thyristor SKG be attempted by in the current supply circuit of watt-hour meter after relay (J) is connected in series.The contact and the load of relay are in series.When the potential winding decompression, the SCR control signal circuit triggers controllable silicon, thereby makes relay disconnect the contact that itself and load are in series.Prevent the generation of stealing electricity phenomenon thus.
This anti-electricity-theft device element is selected as follows: L
3=300～400 μ H, C
1=C
2=0.1～0.4 μ F, C
3=0.33～0.47 μ F, R
1=100K, R
2=510K, Zener diode are the HEP-EF type, and bidirectional triode thyristor is DTA10A600V or DCR10A600V.
Claims (4)
1, a kind of ammeter anti-electricity-theft device, include silicon controlled trigger signal circuit and control element bidirectional triode thyristor, described bidirectional triode thyristor is serially connected in the current supply circuit, it is characterized in that the trigger pip circuit is connected to ammeter potential winding two ends, and be made of resistance, electric capacity and a Zener diode, an end of Zener diode and the control utmost point of bidirectional triode thyristor join.
2, ammeter anti-electricity-theft device as claimed in claim 1 is characterized in that incorporating in the current supply circuit π filter network of being made up of inductance, electric capacity.
3, ammeter anti-electricity-theft device as claimed in claim 2 is characterized in that by the current coil in the ammeter as the inductance in the described π filter network.
4, ammeter anti-electricity-theft device as claimed in claim 1 is attempted by in the current supply circuit of watt-hour meter after it is characterized in that bidirectional triode thyristor and relay being connected in series, and contact of described relay and load are in series.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93224706 CN2166451Y (en) | 1993-09-17 | 1993-09-17 | Anti-stealing electricity device for electric meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93224706 CN2166451Y (en) | 1993-09-17 | 1993-09-17 | Anti-stealing electricity device for electric meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2166451Y true CN2166451Y (en) | 1994-05-25 |
Family
ID=33802670
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93224706 Expired - Fee Related CN2166451Y (en) | 1993-09-17 | 1993-09-17 | Anti-stealing electricity device for electric meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2166451Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109813960A (en) * | 2019-03-29 | 2019-05-28 | 国网河南省电力公司漯河供电公司 | One kind being based on the anti-electricity-theft intelligent kilowatt-hour meter of Internet of Things and monitoring system |
-
1993
- 1993-09-17 CN CN 93224706 patent/CN2166451Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109813960A (en) * | 2019-03-29 | 2019-05-28 | 国网河南省电力公司漯河供电公司 | One kind being based on the anti-electricity-theft intelligent kilowatt-hour meter of Internet of Things and monitoring system |
| CN109813960B (en) * | 2019-03-29 | 2024-02-20 | 国网河南省电力公司漯河供电公司 | Intelligent kilowatt-hour meter and monitoring system based on thing networking electricity larceny prevention |
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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 |