CN201004548Y - Current leakage protector with zero line breaking protection - Google Patents
Current leakage protector with zero line breaking protection Download PDFInfo
- Publication number
- CN201004548Y CN201004548Y CNU2006201325213U CN200620132521U CN201004548Y CN 201004548 Y CN201004548 Y CN 201004548Y CN U2006201325213 U CNU2006201325213 U CN U2006201325213U CN 200620132521 U CN200620132521 U CN 200620132521U CN 201004548 Y CN201004548 Y CN 201004548Y
- Authority
- CN
- China
- Prior art keywords
- circuit
- zero line
- power
- control circuit
- utility
- 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
Images
Abstract
The utility model relates to a creepage protector with a zero line open circuit protection; expect that the creepage protection can be provided when the circuit is well-balanced, the protector can also cut a power automatically and stop supply outward to assure safety when the power zero line is break. The utility model mainly consists of a trip circuit, a power rectify accumulation circuit, a zero line open circuit detecting circuit as well as a creepage detecting control circuit. The circuit will lose power supply when the zero line of the input end breaks, then the control circuit can be supplied by the accumulation capacitance. The phase line feed the zero line of an output end through the circuit, making the electric potential between the zero line and the ground wire of the output end raised, then the control circuit output the trip signal and the accumulation capacitance trip coil discharges then the release trips operation to cut the power. The whole process needs no more than 0.3s. The utility model is suitable for a single-phase three class type power electro-device with a ground wire and can be widely used for protecting the household appliance and moveable electro-device.
Description
Affiliated technical field
The utility model relates to a kind of earth leakage protective device, and is especially a kind of when zero line generation open circuit fault, the earth leakage protective device that can shield.
Background technology
Now earth leakage protective device commonly used on the market is under the situation of circuit normal power supply, and as electric leakage or get an electric shock when taking place, and leakage current is when surpassing set point, and the supply of cutting off the electricity supply plays a protective role.When zero-power line generation open circuit fault and phase line just often; the control circuit of protector loses the power supply supply, so protector also just lost the effect of electric circuit inspection, action protection, this moment as electric leakage takes place or get an electric shock; protector can't play a protective role, and personal safety can not get ensureing.
Summary of the invention
Earth leakage protective device of the present utility model, decapacitation provide outside the circuit creepage protection function just often, and when zero-power line generation open circuit fault, protector can be cut off the electricity supply automatically, stops outside power supply, guarantees personal safety.Be particularly useful for the portable earth leakage protective device of the single-phase triple-pole type of ground wire.
The technical scheme that its technical problem that solves the utility model adopts is: whole protecting device circuit is made up of trip circuit, power rectifier accumulator, zero line break testing circuit, hookup, detection of electrical leakage control circuit and zero sequence current mutual inductor.
The zero line break testing circuit is made up of capacitor C 4, C5, resistance R 5, R7, diode D3, triode Q2.Resistance R 7 be connected between the base stage and ground wire GND of triode Q2 after capacitor C 5 is connected, resistance R 5, diode D3, capacitor C 4 also are connected between the base stage and emitter of triode Q2, the emitter connection control circuit KZ power cathode (being zero line N-out) of triode Q2, the input of collector electrode connection control circuit KZ.Trip circuit is made up of tripping coil K1, diode D2, controllable silicon Q1; The power rectifier accumulator is made up of resistance R 1, R2, diode D1, storage capacitor C1, C2.The end of tripping coil K1 and the positive pole of storage capacitor C1 join, and the anode of the other end and controllable silicon Q1 joins, and the negative pole of the negative electrode of controllable silicon Q1 and storage capacitor C1 joins, and the control utmost point and the control circuit KZ of controllable silicon Q1 join.Hookup is made up of resistance R 4, button K2; Control circuit KZ and zero sequence current mutual inductor ZCT adopt conventional openly circuit, and R3 and C3 are used for regulating leakage current sensitivity.
Realize the utility model technical functionality; do not need shape such as structure, shell to change to former earth leakage protective device; only need to change the wiring of printed circuit board (PCB); increase several electronic components; can reach the purpose that increases the zero line break defencive function, the type that increases that is specially adapted to earth leakage protective device manufacturer is produced in batches.
Description of drawings
Accompanying drawing is the circuit theory diagrams of the utility model embodiment
Embodiment
Circuit theory diagrams in conjunction with the accompanying drawings, the operation principle of further analysis circuit: after release K1 resets, power supply is storage capacitor C1 charging after current-limiting resistance R1, rectifier diode D1 rectification, be control circuit KZ power supply through current-limiting resistance R2, filter capacitor C2 simultaneously.During operate as normal, the size of current of the phase line of flowing through, zero line equates that phase place is opposite, the non-inductive electric current of zero-sequence transformer ZCT secondary coil, control circuit KZ no-output.
When electric leakage takes place in circuit and reach the setting current value, the induced current trigger control circuit KZ of zero-sequence transformer ZCT secondary coil, control circuit KZ exports trip signal, controllable silicon Q1 conducting, the electric energy of storage capacitor C1 discharges to tripping coil K1, tripping coil K1 action makes the release tripping operation, cuts off the electricity supply.
When input zero line N-in opened circuit, promptly the circuit of protector lost the power supply supply, and the control circuit KZ of protector is by storage capacitor C1, C2 continued power at this moment.Phase line L-in voltage is through load or the protector internal wiring feed zero line N-out to the protector output; current potential between output zero line N-out and the ground wire GND is raise; electric current is by the be utmost point of capacitor C 5, resistance R 7, triode Q2; make the Q2 conducting; one terminal potential of zero-sequence transformer ZCT secondary coil descends; trigger control circuit KZ exports trip signal; controllable silicon Q1 conducting; the electric energy of storage capacitor C1 discharges to tripping coil K1; tripping coil K1 action makes the release tripping operation; cut off the electricity supply, reach the purpose of protection personal safety.Whole course of action is not more than 0.3 second.
Claims (2)
1, a kind of earth leakage protective device with the zero line break protection; it is made up of trip circuit, power rectifier accumulator, zero line break testing circuit, hookup, control circuit and zero sequence current mutual inductor; it is characterized in that the zero line break testing circuit by resistance R 7 be connected between the b utmost point and ground wire GND of triode Q2 after capacitor C 5 is connected; resistance R 5, diode D3, capacitor C 4 also are connected in b, the c utmost point of triode Q2; the e utmost point of triode Q2 is pressed output zero line N-out, an input of the c utmost point connection control circuit of triode Q2.
2, the earth leakage protective device of band zero line break protection as claimed in claim 1; it is characterized in that tripping coil K1 one end in the trip circuit is connected with storage capacitor C1; the other end of C1 and controllable silicon Q1 even press; another utmost point of controllable silicon Q1 is connected with the other end of tripping coil K1, and the action power of tripping coil K1 is to be provided by storage capacitor C1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201325213U CN201004548Y (en) | 2006-08-15 | 2006-08-15 | Current leakage protector with zero line breaking protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201325213U CN201004548Y (en) | 2006-08-15 | 2006-08-15 | Current leakage protector with zero line breaking protection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201004548Y true CN201004548Y (en) | 2008-01-09 |
Family
ID=39040091
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006201325213U Expired - Fee Related CN201004548Y (en) | 2006-08-15 | 2006-08-15 | Current leakage protector with zero line breaking protection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201004548Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104577971A (en) * | 2014-12-26 | 2015-04-29 | 余姚市嘉荣电子电器有限公司 | Outage trip protection plug |
| CN105207171A (en) * | 2015-09-21 | 2015-12-30 | 余姚市嘉荣电子电器有限公司 | Automatic power-on and power-off control circuit for electric leakage protector |
-
2006
- 2006-08-15 CN CNU2006201325213U patent/CN201004548Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104577971A (en) * | 2014-12-26 | 2015-04-29 | 余姚市嘉荣电子电器有限公司 | Outage trip protection plug |
| CN104577971B (en) * | 2014-12-26 | 2017-11-14 | 余姚市嘉荣电子电器有限公司 | Power off trip protection plug |
| CN105207171A (en) * | 2015-09-21 | 2015-12-30 | 余姚市嘉荣电子电器有限公司 | Automatic power-on and power-off control circuit for electric leakage protector |
| CN105207171B (en) * | 2015-09-21 | 2018-02-06 | 余姚市嘉荣电子电器有限公司 | Earth leakage protective device powers on/off control circuit automatically |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202094431U (en) | Leakage protection plug | |
| CN201590645U (en) | AC input over-voltage and under-voltage protection device for electric apparatus | |
| CN103872658A (en) | Multifunctional self-recovery over-voltage and under-voltage protector | |
| CN201975754U (en) | Electric leakage overcurrent protection circuit | |
| CN201369470Y (en) | Earth-leakage protecting plug | |
| CN204967236U (en) | Leakage protector | |
| CN202917763U (en) | Electric leakage detection protection plug | |
| CN201181835Y (en) | Multifunctional earth-leakage protective equipment | |
| CN201004548Y (en) | Current leakage protector with zero line breaking protection | |
| CN203871841U (en) | Small-scale residual current motion protective circuit breaker | |
| CN103794425B (en) | Earth leakage protective device | |
| CN103066456B (en) | Protective plug capable of checking leakage of electricity | |
| CN102290689A (en) | Earth leakage protection plug | |
| CN201285429Y (en) | Detection alarm apparatus for leakage protection plug | |
| CN202503262U (en) | Electric leakage protection device | |
| CN201360136Y (en) | Novel residual current operating device with grounding wire protection function | |
| CN201260066Y (en) | Control circuit for multifunctional protection socket | |
| CN101931208B (en) | Leakage current detection protection circuit | |
| CN204376376U (en) | Based on the time lagged type residual current action breaker of Quick-type electric leakage integrated package | |
| CN204407861U (en) | A kind of Low-Voltage Leakage Protection | |
| CN209896685U (en) | Open central line leakage protection circuit | |
| CN203850562U (en) | Electric-leakage reminding device for electronic equipment | |
| CN202094432U (en) | Leakage protection plug | |
| CN217307248U (en) | Three-phase residual current protection circuit for charging pile | |
| CN201160221Y (en) | Auto-power-off synthetic protector |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SUZHOU JINSHANMEN TRANSFORMER CO., LTD. Free format text: FORMER OWNER: CHEN CHENGNAN Effective date: 20091204 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20091204 Address after: Wenzhou Shuangfeng town Taicang City Industrial Park in Suzhou city of Jiangsu province (new Yang Road), zip code: 215416 Patentee after: Suzhou Jinshanmen Transformer Co., Ltd. Address before: Yueqing City, Zhejiang Province, Weng Yang Zhen Sha tou Cun Yi Road 1, zip code: 325606 Patentee before: Chen Chengnan |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080109 Termination date: 20110815 |