CN2393102Y - Apparatus for preventing fraudulent use of electricity and electroshock for electricity meter - Google Patents
Apparatus for preventing fraudulent use of electricity and electroshock for electricity meter Download PDFInfo
- Publication number
- CN2393102Y CN2393102Y CN 99243405 CN99243405U CN2393102Y CN 2393102 Y CN2393102 Y CN 2393102Y CN 99243405 CN99243405 CN 99243405 CN 99243405 U CN99243405 U CN 99243405U CN 2393102 Y CN2393102 Y CN 2393102Y
- Authority
- CN
- China
- Prior art keywords
- circuit
- electricity
- electroshock
- capacitor
- watt
- 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
Landscapes
- Burglar Alarm Systems (AREA)
Abstract
The utility model relates to an apparatus for preventing fraudulent use of electricity and electroshock for electricity meters. The utility model is formed by that azero sequence mutual inductor BL< 1 > and one end of a coil L< 1 > are connected with a base of an amplifier tube V< T > after coupled by a capacitor C< 2 >; a V< T > collector is connected with an N< 1 > of CD 4011 of a CMOS circuit; a diode D < 6 > is arranged between an N< 2 > and an N < 3 >; a delay circuit is composed of a capacitor C< 5 > and a resistor R < 5 >; a driving circuit is formed by that an N< 4 > is connected with a thyristor V< S > by a resistor R < 6 >; an input terminal of an AC relay J of a control circuit is connected to an outgoing line 3 of an electricity meter, and the outgoing line 3 of the electricity meter passes through the zero sequence mutual inductor BL< 1 >; an output terminal is connected with a voltage-stabilizing rectification circuit. The utility model can prevent fraudulent use of electricity and electroshock and surges, the power consumption is small, and the anti-interference ability is strong.
Description
The utility model relates to a kind of device that is used for the anti-electricity-theft protection against electric shock of watt-hour meter.
Existing arrangement on watt-hour meter for avoiding fraudulent use mainly adopts zero sequence current mutual inductor, and level detection device mercury cut-off and on-off circuit, voltage-stabilized power supply circuit, time base circuit ICB555, relay executive circuit are formed.Because the time base circuit in this structure is a twin-stage type integrated package, quiescent dissipation is bigger, so power consumption is also big.Executive circuit uses DC relay, and the accidental surge impact capacity that produces of defence thunderbolt and electrical network is poor, and anti-electricity-theft device is damaged.
The purpose of this utility model provides a kind of device that the anti-electricity-theft protection against electric shock of watt-hour meter, power consumption are little, can anti-surge impact that is used for.
Primary structure of the present utility model is by zero-sequence transformer, amplifying circuit, and delay circuit, driving circuit, regulator rectifier circuit and executive circuit are formed.Zero-sequence transformer BL wherein
1Coil L
1One end ground connection, the other end is through capacitor C
2Coupling meets amplifier tube V
TBase stage.Amplifier tube V
TCollector connects the N of cmos circuit CD4011
1, at N
2And N
3Between connect diode D
6, capacitor C
5, resistance R
5Form delay circuit, N
4Output terminal is through resistance R
6Meet controllable silicon V
sForm driving circuit, watt-hour meter output line 3.5 is from zero-sequence transformer BL
1In pass, the AC relay J input end of executive circuit is connected on the watt-hour meter output line 3, the relay J output terminal connects rectification circuit.The principle of work of this device is: zero-sequence transformer BL
1Directly obtain current signal and carry out sampling ratio from watt-hour meter output line 3.5, the detected current signal equal and opposite in direction of zero-sequence transformer under the normal condition, direction is opposite, coil L
1Be output as zero.When stealing or the generation of electric shock phenomenon, zero-sequence transformer BL
1Detected current signal is unequal.Magnetic flux can not be offset fully, and the electromotive force of generation makes coil L
1Produce alternating voltage through capacitor C
2To amplifier tube V
T, make the N of CD4011 simultaneously
1, N
2, N
3, N
4Output terminal carry out high-low level conversion, N
2Be output as high level, through diode D
6To capacitor C
5Charging, N
3Be input as Gao Ping, be output as low level, N
4Output transfer high level to by low level, pass through resistance R
6Trigger controllable silicon V
sConducting makes the relay J adhesive, normally closed contact K
1, K
2Open, watt-hour meter is externally power supply not, works as capacitor C
5Pass through resistance R
5Time-delay discharge in about 20 seconds reaches N
3Changing voltage the time, N
3Output then be transformed into high level, N by low level
4Output also change low level into, controllable silicon V by high level
sEnd, control circuit resets, normally closed contact K
1, K
2Closure, watt-hour meter is externally powered.If the stealing or the still existence of getting an electric shock, foregoing circuit moves again immediately, eliminates up to stealing or electric shock phenomenon.
Device described in the utility model, because executive circuit adopts AC relay J, its inductance value and impedance are all relatively large, are that executive circuit simultaneously has stronger anti-surge ability again, thereby this device is not fragile when being subjected to the accidental surge of external power grid or thunderbolt yet.Because of delay circuit, driving circuit uses cmos circuit CD4011, and its quiescent dissipation is little, and antijamming capability is strong, so this device was both anti-electricity-theft, and protection against electric shock, anti-surge again, power consumption is little, and antijamming capability is strong.
Accompanying drawing, watt-hour meter apparatus for preventing fraudulent use of electricity and electroshock electrical schematic diagram.
Below in conjunction with accompanying drawing the utility model is further described, after the output line 3.5 of watt-hour meter passes the mutual device BL1 of zero sequence, connect normally closed contact K
1, K
2, contact K
1, K
2Output terminal connects the binding post of watt-hour meter output line 3.5, commutator tube D
1, D
2, D
3, D
4Output terminal connect controllable silicon V
s, at controllable silicon V
sWith stabilivolt D
5Between connect current-limiting resistance R
1, capacitor C
1With stabilivolt D
5And connect stabilivolt and N
1Between connect resistance R
2, R
3, R
4, amplifier tube V
T, capacitor C
3, C
4Form amplifying circuit.
Claims (1)
- A kind of watt-hour meter apparatus for preventing fraudulent use of electricity and electroshock of being made up of zero-sequence transformer, amplifying circuit, delay circuit, driving circuit, regulator rectifier circuit and executive circuit is characterized in that zero-sequence transformer BL 1Coil L 1One end is through capacitor C 2Amplifier tube V is of coupled connections TBase stage, amplifier tube V TCollector meets the N of cmos circuit CD4011 1, at N 2With N 3Between meet diode D 6, capacitor C 5, resistance R 5, N 4Output terminal is through resistance R 6Meet controllable silicon V s, watt-hour meter output line 3.5 is from zero-sequence transformer BL 1Pass the input termination watt-hour meter output line 3 of AC relay J, output termination regulator rectifier circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99243405 CN2393102Y (en) | 1999-09-17 | 1999-09-17 | Apparatus for preventing fraudulent use of electricity and electroshock for electricity meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99243405 CN2393102Y (en) | 1999-09-17 | 1999-09-17 | Apparatus for preventing fraudulent use of electricity and electroshock for electricity meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2393102Y true CN2393102Y (en) | 2000-08-23 |
Family
ID=34029699
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99243405 Expired - Fee Related CN2393102Y (en) | 1999-09-17 | 1999-09-17 | Apparatus for preventing fraudulent use of electricity and electroshock for electricity meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2393102Y (en) |
-
1999
- 1999-09-17 CN CN 99243405 patent/CN2393102Y/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103166175B (en) | LED drive power protection circuit against input over-voltage | |
| CN100370664C (en) | Arc and leakage protector | |
| CN105553245A (en) | Soft start circuit | |
| CN100384043C (en) | Protector of leakage and electricity steal | |
| CN2393102Y (en) | Apparatus for preventing fraudulent use of electricity and electroshock for electricity meter | |
| CN203871841U (en) | Small-scale residual current motion protective circuit breaker | |
| CN2879200Y (en) | Anti-theft leakage-proof device for electricity meter | |
| CN204832315U (en) | Two -way current detection circuit | |
| CN204089154U (en) | The overvoltage crowbar of a kind of ultra-high-tension power transmission line ground wire power taking | |
| CN208241303U (en) | Three pole on-off leakage protecting plug of intelligent control type | |
| CN208173507U (en) | A kind of E-business service terminal device | |
| CN203205828U (en) | LED driving power supply input overvoltage protection circuit | |
| CN2296014Y (en) | Multifunctional A.C. wattmeter | |
| CN221353909U (en) | Leakage protection circuit | |
| CN204835677U (en) | Battery charging circuit that connects in parallel | |
| CN209525702U (en) | The dedicated buckle releaser circuit of pre-paying kilowatt-hour meter | |
| CN204631177U (en) | A kind of single phase low voltage distribution system Fault Pre pick-up unit | |
| CN2528141Y (en) | Electronic controller for earth leakage protection | |
| CN216354042U (en) | Direct current breaker | |
| CN2289265Y (en) | Water level inductive controller | |
| CN2169940Y (en) | Leakage, over voltage and over-load protector | |
| CN206505881U (en) | It is a kind of outside to control the residual current action breaker of dropout | |
| CN107257154A (en) | A kind of portable communication apparatus outdoor charger unit | |
| CN209859227U (en) | Special release circuit for prepayment electricity meter | |
| CN2299349Y (en) | Controller for preventing fraudulent use of electricity |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C57 | Notification of unclear or unknown address | ||
| DD01 | Delivery of document by public notice |
Addressee: Hao Yingyi Document name: Notice of termination |
|
| 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 |