CN2877102Y - Socket type grounding fault circuit breaker - Google Patents
Socket type grounding fault circuit breaker Download PDFInfo
- Publication number
- CN2877102Y CN2877102Y CN 200620039505 CN200620039505U CN2877102Y CN 2877102 Y CN2877102 Y CN 2877102Y CN 200620039505 CN200620039505 CN 200620039505 CN 200620039505 U CN200620039505 U CN 200620039505U CN 2877102 Y CN2877102 Y CN 2877102Y
- Authority
- CN
- China
- Prior art keywords
- circuit
- fault
- anode
- resistance
- breaker
- 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
Landscapes
- Emergency Protection Circuit Devices (AREA)
Abstract
A socket-type ground fault breaker capable of releasing electromagnetically and self-detecting ground fault. The breaker includes an input circuit, a leakage fault detection amplifying circuit, a ground fault detecting amplifying circuit, a signal control circuit consisting of an integrated circuit IC and a reset-release driving circuit, an output circuit, and a self-ground fault detecting circuit connected between the input circuit and the reset-release driving circuit. The breaker can indicate fault thereof and interrupt circuit from load terminal if a self-fault is detected to prevent people from getting an electric shock. The utility model has the advantages of high safety, convenience, and more functions.
Description
Technical field
The utility model relates to a kind of socket type earth-fault breaker, is called for short GFCI, especially relates to the GFCI that adopts electromagnetic release.
Background technology
At present, owing to ground-fault interrupter can prevent person electric shock to a certain extent and effectively prevent equipment and the fire incident that earth fault causes, thereby be subjected to extensive use.
Existing socket type earth-fault breaker comprises that input circuit, leak current fault detect amplifying circuit, the ground connection neutral fault detects amplifying circuit, signal control circuit, output circuit.Power supply signal arrives signal control circuit by input circuit behind rectification circuit A, leak current fault detects amplifying circuit generation detection of electrical leakage signal and inputs to signal control circuit, the ground connection neutral fault detects amplifying circuit and produces the Earth Fault Detection signal and export to signal control circuit, and signal control circuit is exported to output circuit respectively after to signal processing.
The rectification circuit of input circuit is made up of 4 rectifier diode D1, D2, D3, D4, and alternating current is transformed into direct current.D1, D2 junction, D3, D4 junction constitute ac input end and are connected with the power end of GFCI, and D2, D3 junction are the DC power supply load end, and narration claims " negative electrode of input circuit " afterwards herein, and D1, D4 junction are " anode of input circuit ",
During operate as normal, output of the socket of circuit breaker and wiring output all have electricity output, and circuit breaker is in reset mode.
The magnetic test coil that leak current fault detects amplifying circuit and ground connection neutral fault detection amplifying circuit is used to detect electric leakage signal and earth fault signal, when having detected electric leakage or earth fault, delivering to signal control circuit handles, integrated circuit (IC) in the signal control circuit checks whether this signal has injury or damage to people or equipment, if have then produce a triggering signal fast, trigger unidirectional controllable silicon S CR1 work, cause triode Q1 to end, actuating coil J1 is also along with quitting work, circuit breaker elasticity moving contact K1, K2, K3, K4 disconnects, the output of circuit breaker output no current, circuit breaker is in trip status.
Existing GFCI not only can connect load by the jack of top cover of faceplate, can also connect load by the load wiring screw, when having fault, circuit breaker itself inserts power supply as if input supply terminal, under no indication state, the user may continue to use, the electric shock situation often easily takes place, and has brought very big hidden danger to personal safety.
Summary of the invention
The purpose of this utility model provides and a kind ofly adopts electromagnetic type to thread off and have the socket type earth-fault breaker of self Earth Fault Detection function.
For this reason, the socket type earth-fault breaker that the utility model provides comprises that input circuit, leak current fault detect signal control circuit, output circuit that amplifying circuit, ground connection neutral fault detect amplifying circuit, are made up of the integrated circuit (IC) and the dropout drive circuit that resets, it also comprises self ground fault detection circuit, and self ground fault detection circuit is connected input circuit and resets between the dropout drive circuit.
Self ground fault detection circuit comprises end-of-life lamp LED2, NPN triode Q2, LED 1, photo resistance R12, normally closed switch S1 by testing button TEST and reset button RESET control, unidirectional controllable silicon S CR2, capacitor C 2, resistance R 6, the base stage of NPN triode Q2 through resistance be connected the anode of input circuit and the coil J1 of the dropout drive circuit that resets between, the base stage of NPN triode Q2 links to each other with the anode of unidirectional controllable silicon S CR2, the emitter of NPN triode Q2 links to each other with the collector electrode of the NPN triode Q1 of the dropout drive circuit that resets through diode D5, emitter links to each other with the negative electrode of end-of-life lamp LED2 through the negative electrode of diode D5, the anode of end-of-life lamp LED2 connects an end of switch S 1, the other end of switch S 1 links to each other with the negative electrode of LED 1, the anode of LED 1 connects the anode of power supply, LED 1 and photo resistance R12 cooperating, branch road one end of band photo resistance R12 is connected between the anode and coil J1 of input circuit, the other end inserts the negative electrode of input circuit, the route photo resistance R12 of band photo resistance R12, the parallel circuits of polar capacitor C2 and resistance R 6 is in series, the controlled end of unidirectional controllable silicon S CR2 be connected photo resistance R12 with by polar capacitor C2, the junction of the parallel circuits that resistance R 6 is formed.
In order better to reflect the "on" position of circuit breaker load end, can also be at a load end of the present utility model LED 3 branch roads in parallel.
Because above-mentioned female type fault earthing circuit breaker has possessed the deixis to the circuit breaker faults itself, and self out of order load end outage that makes circuit breaker simultaneously can detected, can prevent effectively that the person from getting an electric shock, and has characteristics safer, convenient, more perfect function.
Below in conjunction with drawings and Examples technology contents of the present utility model is described further.
Description of drawings
Fig. 1 is a circuit block diagram of the present utility model.
Fig. 2 is the electrical schematic diagram of a kind of embodiment of the utility model.
Embodiment
As shown in Figure 1, the socket type earth-fault breaker that the utility model provides comprises that input circuit, leak current fault detect signal control circuit, output circuit that amplifying circuit, ground connection neutral fault detect amplifying circuit, are made up of the integrated circuit (IC) and the dropout drive circuit that resets, it also comprises self ground fault detection circuit, and self ground fault detection circuit is connected input circuit and resets between the dropout drive circuit.
As shown in Figure 2, input circuit is by 4 rectifier diode D1, D2, D3, the rectification circuit that D4 forms, leak current fault detects amplifying circuit, the ground connection neutral fault detects amplifying circuit and comprises the magnetic test coil CT that is used to detect electric leakage signal and earth fault signal, NT, the dropout drive circuit that resets comprises controllable silicon SCR 1, triode Q1, coil J1 and biasing circuit, self ground fault detection circuit comprises end-of-life lamp LED2, NPN triode Q2, LED 1, photo resistance R12, normally closed switch S1 by testing button TEST and reset button RESET control, unidirectional controllable silicon S CR2, capacitor C 2, resistance R 6, the base stage of NPN triode Q2 through resistance be connected the anode of input circuit and the coil J1 of the dropout drive circuit that resets between, the base stage of NPN triode Q2 links to each other with the anode of unidirectional controllable silicon S CR2, the emitter of NPN triode Q2 links to each other with the collector electrode of the NPN triode Q1 of the dropout drive circuit that resets through diode D5, emitter links to each other with the negative electrode of end-of-life lamp LED2 through the negative electrode of diode D5, the anode of end-of-life lamp LED2 connects an end of switch S 1, the other end of switch S 1 links to each other with the negative electrode of LED 1, the anode of LED 1 connects the anode of power supply, LED 1 and photo resistance R12 cooperating, branch road one end of band photo resistance R12 is connected between the anode and coil J1 of input circuit, the other end inserts the negative electrode of input circuit, the route photo resistance R12 of band photo resistance R12, the parallel circuits of polar capacitor C2 and resistance R 6 is in series, the controlled end of unidirectional controllable silicon S CR2 be connected photo resistance R12 with by polar capacitor C2, the junction of the parallel circuits that resistance R 6 is formed, resistance R 6 makes that the charging interval of polar capacitor C2 is longer than the reaction time of circuit breaker ground fault function.
Self ground fault detection circuit power supply under the normal wiring switch on first or by reset button RESET after by testing button TEST situation under, whether detect circuit breaker self earth fault function normal.
When power supply is switched on first under normal wiring, triode Q1 conducting, solenoid J1 work, thereby drive K switch 1, K2, K3, the closed work of K4, the output circuit of socket type earth-fault breaker has electricity output, be that wiring lead-out terminal and socket lead-out terminal have electricity output, LED 3 is luminous, and the indication load end has.Self ground fault detection circuit work of socket type earth-fault breaker simultaneously, by detecting by analogue ground fault loop that the E point-the LED1-S1-Q1-D3-F point forms earth fault function to circuit breaker self, switch S 1 is a normally closed switch, and photo resistance R12 is because of the conducting of lighting of LED 1.
If the earth fault function of socket type earth-fault breaker is normal, the then SCR1 work of socket type earth-fault breaker of conducting because of the analogue ground fault loop, triode Q1 ends, the analogue ground fault loop disconnects, Light-Emitting Diode LED1 extinguishes, cut-off switch K1, K2, K3, K4, make socket type earth-fault breaker be in trip status, triode Q2 ends, photo resistance R12 ends because of extinguishing of LED 1, the charging interval of polar capacitor C2 is longer than the reaction time of circuit breaker ground fault function, so the time controllable silicon SCR 2 controlled end electromotive force be lower than its work potential, controllable silicon SCR 2 is not worked.Can reset by reset button RESET, make normally closed switch S1 open, disconnect the analogue ground fault loop, the circuit breaker work that normally resets.
If the earth fault function of socket type earth-fault breaker is undesired, integrated circuit (IC) does not have triggering signal output, SCR1 does not work, triode Q1 conducting, the conducting always of analogue ground fault loop, make photo resistance R12 conducting always, the charging interval of polar capacitor C2 is enough, controllable silicon SCR 2 work, triode Q2 ends, and coil J1 threads off, K switch 1, K2, K3, K4 disconnects, the load end outage of socket type earth-fault breaker, LED 3 extinguishes, and the indication load end does not have, thereby guaranteed safety, because end-of-life lamp LED2 lights always, the earth fault function of indication socket type earth-fault breaker is undesired, this socket type earth-fault breaker end-of-life simultaneously.
Under correct wiring, by reset button RESET, promptly conducting A point and B point disconnect normally closed switch S1 simultaneously, controllable silicon SCR 1 quits work, after reset button RESET disconnected A point and B point, controllable silicon SCR 1 was not still worked, triode Q1 work, press testing button TEST this moment, closed normally closed switch S1 is detected by analogue ground fault loop that the E point-LED1-S1-Q1-D3-F point the forms earth fault function to circuit breaker self, and the detection principle is same as above.
Claims (3)
1. socket type earth-fault breaker, comprise that input circuit, leak current fault detect signal control circuit, output circuit that amplifying circuit, ground connection neutral fault detect amplifying circuit, are made up of the integrated circuit (IC) and the dropout drive circuit that resets, it is characterized in that it also comprises self ground fault detection circuit, self ground fault detection circuit is connected input circuit and resets between the dropout drive circuit.
2. socket type earth-fault breaker according to claim 1, its feature is that also self ground fault detection circuit comprises end-of-life lamp (LED2), NPN triode (Q2), light-emitting diode (LED1), photo resistance (R12), normally closed switch (S1) by testing button (TEST) and reset button (RESET) control, one-way SCR (SCR2), electric capacity (C2), resistance (R6), the base stage of NPN triode (Q2) through resistance be connected the anode of input circuit and the coil of the dropout drive circuit that resets (J1) between, the base stage of NPN triode (Q2) links to each other with the anode of one-way SCR (SCR2), the emitter of NPN triode (Q2) links to each other through the collector electrode of diode (D5) with the NPN triode (Q1) of the dropout drive circuit that resets, emitter links to each other with the negative electrode of end-of-life lamp (LED2) through the negative electrode of diode (D5), the anode of end-of-life lamp (LED2) connects an end of switch (S1), the other end of switch (S1) links to each other with the negative electrode of light-emitting diode (LED1), the anode of light-emitting diode (LED1) connects the anode of power supply, light-emitting diode (LED1) and photo resistance (R12) cooperating, branch road one end of band photo resistance (R12) is connected between the anode and coil (J1) of input circuit, the other end inserts the negative electrode of input circuit, a route photo resistance (R12) of band photo resistance (R12), the parallel circuits of polar capacitor (C2) and resistance (R6) is in series, the controlled end of one-way SCR (SCR2) be connected photo resistance (R12) with by polar capacitor (C2), the junction of the parallel circuits that resistance (R6) is formed.
3. socket type earth-fault breaker according to claim 1 and 2, its feature also are the load end of a circuit breaker light-emitting diode (LED3) branch road in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620039505 CN2877102Y (en) | 2006-02-14 | 2006-02-14 | Socket type grounding fault circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620039505 CN2877102Y (en) | 2006-02-14 | 2006-02-14 | Socket type grounding fault circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2877102Y true CN2877102Y (en) | 2007-03-07 |
Family
ID=37820338
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620039505 Expired - Fee Related CN2877102Y (en) | 2006-02-14 | 2006-02-14 | Socket type grounding fault circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2877102Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008124961A1 (en) * | 2007-04-11 | 2008-10-23 | Hisetec Electronic Co., Ltd. | Ground fault circuit interrupter with life checking and indicating circuit |
| CN113659519A (en) * | 2021-05-21 | 2021-11-16 | 上海蕴原电器有限公司 | Failure automatic monitoring circuit and ground fault circuit breaker using same |
-
2006
- 2006-02-14 CN CN 200620039505 patent/CN2877102Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008124961A1 (en) * | 2007-04-11 | 2008-10-23 | Hisetec Electronic Co., Ltd. | Ground fault circuit interrupter with life checking and indicating circuit |
| CN113659519A (en) * | 2021-05-21 | 2021-11-16 | 上海蕴原电器有限公司 | Failure automatic monitoring circuit and ground fault circuit breaker using same |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN2768267Y (en) | Open-circuit-proof protector for current transformer | |
| CN101059548A (en) | Magnet coil break detection circuit | |
| CN109031107B (en) | Electronic auxiliary contact circuit for detecting on-off of high-voltage relay contact | |
| CN103490377A (en) | Protection circuit for electric leakage detection | |
| CN200950504Y (en) | Electric power plug having earth leakage protective function | |
| CN101872957B (en) | Leakage current detection protection circuit | |
| CN101872956B (en) | Leakage current detection protection circuit | |
| CN2877102Y (en) | Socket type grounding fault circuit breaker | |
| CN200959515Y (en) | Power-supply and cable inleakage inspection protecting circuit | |
| CN2877101Y (en) | Control circuit with displaying functions of preventing reverse connecting error and state | |
| CN101944716B (en) | Electricity leakage detection protective circuit | |
| CN201515205U (en) | Earth leakage checking protective circuit | |
| CN201422007Y (en) | Electric leakage inspecting protection circuit | |
| CN100433481C (en) | Earth fault breaker | |
| CN101895088A (en) | Leakage detection protection circuit | |
| CN201422009Y (en) | Leakage detection and protection circuit | |
| CN102255277A (en) | Leakage detection protection circuit | |
| CN203275565U (en) | Multifunctional grounding detector | |
| CN201422008Y (en) | Electric leakage inspecting protection circuit | |
| CN107658838B (en) | AC single-phase intelligent module | |
| CN203180491U (en) | Electric leakage protection device | |
| CN201774224U (en) | Novel electric-leakage detection protection circuit | |
| CN2852457Y (en) | Status display circuit | |
| CN2805070Y (en) | Earth fault circuit-breaker | |
| CN2304936Y (en) | Multifunctional wide range constant voltage protector |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070307 |