CN2085967U - Multipurpose protector for preventing fraudulent use and leakage of electricity - Google Patents
Multipurpose protector for preventing fraudulent use and leakage of electricity Download PDFInfo
- Publication number
- CN2085967U CN2085967U CN 90217771 CN90217771U CN2085967U CN 2085967 U CN2085967 U CN 2085967U CN 90217771 CN90217771 CN 90217771 CN 90217771 U CN90217771 U CN 90217771U CN 2085967 U CN2085967 U CN 2085967U
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- resistance
- electricity
- circuit
- leakage
- theft
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Abstract
The utility model relates to a multipurpose protector for preventing the fraudulent use and the leakage of electricity, which is composed of a signal detection device (zero sequence mutual inductor and a current mutual inductor), a logical comparison circuit, a rectification circuit, a filter circuit, a triggering circuit, a silicon controlled rectifier, an electromagnet switch K and a tripping test circuit. The utility model has the working principle that signals of electricity theft, electricity leakage, over current, etc. are detected by the signal detection device in the protector. The signals are amplified through the triggering circuit after comparison to trigger and conduct the silicon controlled rectifier. Thereby, the electromagnetic switch is controlled to act to cut off a power supply, and thus, the goals of electricity theft prevention, electricity leakage and over current protection can be achieved. The utility model has the advantages of a plurality of protection functions, etc.
Description
The utility model be anti-electricity-theft, electric leakage uses protector, belong to the circuit brake field.
Existing earth leakage protective device, anti-electricity-theft device, function singleness, anti-electricity-theft range of control is little, and a user will carry out earth leakage protection, and prevents stealing, and several protectors will be installed, and has increased certain difficulty to the installation of user and power supply department.
The purpose of the utility model is in order to provide a kind of energy anti-electricity-theft, and the overcurrent protection of leaking electricity, and strick precaution, protection domain are big, simple in structure, easy to install, and protector is used in the anti-electricity-theft electric leakage with multiple function more.
The utility model by signal supervisory instrument (zero-sequence transformer ZCT1, current transformer ZCT2, ZCT3), logic comparator circuit (resistance R 1, R2, R3, stabilivolt R5), rectification circuit (surge absorbing element ZNR, rectifier bridge D1-D4), filtering circuit (resistance R 4, capacitor C 1), trigger circuit (amplifier FD, capacitor C 2, resistance R 5, stabilivolt D6), controllable silicon CR, electromagnetic switch K, trial jump circuit (button AN, resistance R 6) is formed.Zero-sequence transformer ZCT1 is installed on the power lead of user power utilization device; current transformer ZCT2, ZCT3; on the incoming line that is installed in electric supply meter; zero-sequence transformer ZCT1 one end ground connection; the other end is connected with resistance R 1; current transformer ZCT2; ZCF3 is connected in series; link ground connection, the other end of ZCT2 is connected with resistance R 3, and the other end of resistance R 1, R2, R3 connects into a bit; insert amplifier FD input end; amplifier FD output terminal and controllable silicon CR are connected with the control utmost point, on resistance R 3 and meet a stabilivolt D5, form current foldback circuit.Electromagnetic switch K is serially connected on the subscriber's drop, and tripping coil J one end among the electromagnetic switch K is connected with power lead, and the other end is connected with rectification circuit input end A.
Accompanying drawing is anti-electricity-theft, the electric leakage protector line schematic diagrams of using more.
Elaborate below in conjunction with accompanying drawing.
Zero-sequence transformer ZCT1 is installed on the power lead of user power utilization device in the signal supervisory instrument, when circuit or electrical appliance electric leakage, zero-sequence transformer ZCT1, by resistance R 1 in the signal process logic comparator circuit of induction acquisition, be input to the input end of amplifier FD in the trigger circuit, signal after amplifier F amplifies is input to the control utmost point of controllable silicon CR, thereby make controllable silicon CR conducting, current transformer ZCT2 in the signal supervisory instrument, ZCT3 is installed in respectively on the power input line and output line of electric supply meter, detecting house lead in respectively equates with signal magnitude on the current coil in electric meter, direction is opposite, through resistance R 2 in the logic comparator circuit, R3 carries out balance, and signal is zero.As stealing takes place, then the signal of ZCT2 detection is greater than the signal of ZCT3 detection, the unbalanced signal that produces on R2, R3 is input to amplifier FD input end in the trigger circuit, is input to the controllable silicon CR control utmost point after signal amplifies through amplifier FD, triggers the controllable silicon conducting.The overcurrent protection circuit be with stabilivolt D5 and resistance R 3 and be connected in current transformer ZCT3 and amplifier FD input end between; the electric current of crossing when link tester is during greater than rated current; the voltage that the detected current signal of ZCT3 forms on resistance R 3 is greater than the voltage stabilizing value of stabilivolt D5; D5 punctures; amplifier obtains signal, triggers controllable silicon CR conducting after amplifier FD amplifies.After the controllable silicon CR conducting, the output terminal C of rectifier bridge D1-D4, D two ends form the loop by controllable silicon CR in rectification circuit, the entire circuit conducting, and the tripping coil J energising among the electromagnetic switch K, electromagnetic switch K inhales moving opening, and cuts off the electricity supply.
In sum, under the situation of electric leakage, stealing, circuit overcurrent, that the utility model can reach is anticreep, the purpose of stealing, overcurrent protection.
Resistance R 6 in the trial jump circuit, button AN is connected in series between the power lead, press the button AN and make electric current increase in the circuit, by the detected signal of pick-up unit ZCT3, form higher voltage through resistance R 3, electric voltage stabilizing value greater than stabilivolt D5, make amplifier FD picked up signal, FD amplifies through the trigger circuit amplifier, trigger the controllable silicon conducting,, regulate current transformer ZCT2 in order to the work of check circuit and electromagnetic switch whether normally when mounted, the distance between the ZCT3 installation site can be regulated the zone of anti-electricity-theft control.
Claims (3)
1; a kind of anti-electricity-theft; the electric leakage protectors of using more; by signal supervisory instrument (zero-sequence transformer ZCT1; current transformer ZCT2; ZCT3); logic comparator circuit (resistance R 1; R2; R3 and stabilivolt D5); rectification circuit (surge absorbing element ZNR, rectifier bridge D1-D4); filtering circuit (resistance R 4; capacitor C 1), trigger circuit (amplifier FD; capacitor C 2; resistance R 5, stabilivolt D6), controllable silicon CR; electromagnetic switch K and trial jump circuit (button AN; resistance R 6) form, it is characterized in that: zero-sequence transformer ZCT1 one end ground connection in the signal supervisory instrument, the other end is connected with resistance R 1; current transformer ZCT2; ZCT3 is connected in series, link ground connection, and the other end of ZCT2 is connected with resistance R 2; the other end of ZCT3 is connected with resistance R 3, resistance R 1; R2; the other end of R3 connects into the input end that a bit inserts amplifier FD.
2, use protector according to anti-electricity-theft, the electric leakage of claim 1 defined more, it is characterized in that the output terminal of amplifier FD is connected with the controllable silicon CR control utmost point.
3, use protector according to anti-electricity-theft, the electric leakage of claim 1 defined more, it is characterized in that electromagnetic switch K series connection on user's electric power incoming line, tripping coil J one end among the electromagnetic switch K is connected with power lead, and the other end is connected with rectification circuit input end A.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90217771 CN2085967U (en) | 1990-08-09 | 1990-08-09 | Multipurpose protector for preventing fraudulent use and leakage of electricity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90217771 CN2085967U (en) | 1990-08-09 | 1990-08-09 | Multipurpose protector for preventing fraudulent use and leakage of electricity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2085967U true CN2085967U (en) | 1991-10-02 |
Family
ID=4896700
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90217771 Withdrawn CN2085967U (en) | 1990-08-09 | 1990-08-09 | Multipurpose protector for preventing fraudulent use and leakage of electricity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2085967U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100384043C (en) * | 2005-08-26 | 2008-04-23 | 李明 | Protector of leakage and electricity steal |
| WO2011047525A1 (en) * | 2009-10-20 | 2011-04-28 | 湖北盛佳电器设备有限公司 | Anti-disconnection breaker |
| CN102231569A (en) * | 2011-07-11 | 2011-11-02 | 中电普瑞科技有限公司 | Control protection system and method for metal oxide varistor (MOV) branch circuit |
| CN104709381A (en) * | 2015-03-23 | 2015-06-17 | 河南银泰新能源汽车有限公司 | Anti-theft device for power supply |
| CN109507477A (en) * | 2018-12-28 | 2019-03-22 | 牡丹江电力电容器有限责任公司 | The anti-electricity-theft holographic control system in oil field |
-
1990
- 1990-08-09 CN CN 90217771 patent/CN2085967U/en not_active Withdrawn
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100384043C (en) * | 2005-08-26 | 2008-04-23 | 李明 | Protector of leakage and electricity steal |
| WO2011047525A1 (en) * | 2009-10-20 | 2011-04-28 | 湖北盛佳电器设备有限公司 | Anti-disconnection breaker |
| CN102231569A (en) * | 2011-07-11 | 2011-11-02 | 中电普瑞科技有限公司 | Control protection system and method for metal oxide varistor (MOV) branch circuit |
| CN104709381A (en) * | 2015-03-23 | 2015-06-17 | 河南银泰新能源汽车有限公司 | Anti-theft device for power supply |
| CN104709381B (en) * | 2015-03-23 | 2017-05-17 | 河南银泰新能源汽车有限公司 | Anti-theft device for power supply |
| CN109507477A (en) * | 2018-12-28 | 2019-03-22 | 牡丹江电力电容器有限责任公司 | The anti-electricity-theft holographic control system in oil field |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| 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 |