CN100553060C - Socket type earth-fault line-breaker with coil open circuit fault deixis - Google Patents
Socket type earth-fault line-breaker with coil open circuit fault deixis Download PDFInfo
- Publication number
- CN100553060C CN100553060C CNB2007101347512A CN200710134751A CN100553060C CN 100553060 C CN100553060 C CN 100553060C CN B2007101347512 A CNB2007101347512 A CN B2007101347512A CN 200710134751 A CN200710134751 A CN 200710134751A CN 100553060 C CN100553060 C CN 100553060C
- Authority
- CN
- China
- Prior art keywords
- circuit
- rectifier bridge
- fault
- current
- controllable silicon
- 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)
- Breakers (AREA)
Abstract
The present invention relates to a kind of socket type earth-fault line-breaker with coil open circuit fault deixis, comprise that with the electric leakage signal amplification circuit be core leakaging signal detecting circuit and electromagnetic trip mechanism, rectifier bridge and filter circuit, described electromagnetic trip coil T3 is connected on the AC side of rectifier bridge, GFCI with fault indication function also is provided with failure alarm circuit, and described failure alarm circuit is subjected to rectifier bridge output control.When GFCI of the present invention open circuit fault occurred as electromagnetic trip coil T3, the rectifier bridge output voltage was zero, and the triggering warning circuit sends acoustic and light information prompting user and changes timely, thereby eliminates safe hidden trouble.
Description
Technical field
The earth fault line breaker that the present invention relates to a kind of female type abbreviates GFCI as, particularly has the GFCI of coil open circuit fault deixis.
Background technology
Existing common GFCI comprises pedestal, the loam cake that is provided with jack, leakaging signal detecting circuit usually and is subjected to described leakaging signal detecting circuit control and the electromagnetic trip mechanism of action, contact assembly, grounding assembly, power supply input coupling assembling, load coupling assembling etc.Not only can provide power supply for load by the jack of loam cake, can also be by the load coupling assembling to connecting electric thereon.Leakaging signal detecting circuit is a core with the electric leakage signal amplification circuit, rectifier bridge and RC filter circuit provide DC power supply for control circuit, the control output end of electric leakage signal amplification circuit is connected to the trigger electrode of dropout controllable silicon SCR 1, dropout controllable silicon SCR 1 is connected in the electric power loop of tripping coil T3, power line L, N all pass test magnetic ring coil T1 and neutral magnetic ring coil T2, and the output of test magnetic ring coil T1 and neutral magnetic ring coil T2 all is connected to the electric leakage signal amplification circuit.The electric current of power line L, N should equate under the normal condition.In case the electric leakage accident takes place, then power line L, N electric current produce difference.Induction coil monitors its difference between current in the earth leakage protective device, and converts thereof into voltage signal.Amplify back output through the electric leakage signal amplification circuit, in case when its difference was set threshold values greater than certain, the output control signal made the tripping mechanism action, being connected between cut-out load power consumption equipment and the power line, thus play a protective role.But traditional earth fault line breaker does not possess the defencive function of end-of-life phase, promptly refer to after some component wear in this faulty line circuit breaker circuit, cause in the circuit breaker life termination, appropriate reaction should be arranged, in time warn the user with this, this earth fault line breaker has lost the earth leakage protective function of its due neutral line, should change timely; Otherwise the user can think that its function is still normal by mistake, in case electric leakage occurs, will exist the potential safety hazard that causes the person and property damage because of electric shock.In recent years through being engaged in correlative study in the GFCI manufacturer; under personnel's such as exploitation and test the joint efforts struggle and research of technique; developed the multiple socket type earth-fault line-breaker with fault indication function that can make the user in time find failure condition; as at Granted publication on May 2nd, 2007; the patent No. is 200620070453.2; name is called disclosed GFCI in " GFCI with fault indication function "; when by failure alarm circuit is set arbitrary diode of rectifier bridge in the leakaging signal detecting circuit or RC filter circuit electrochemical capacitor being short-circuited fault, short circuit protection component action triggers audible and visual alarm circuit sends the acoustic and light information prompting.But, up to the present, these socket type earth-fault line-breakers with fault indication function all are to carry out faulty indication when short-circuit conditions occurring at inner components and parts, seldom have when open circuit conditions occurring and carry out faulty indication, carry out faulty indication when particularly open circuit conditions appears in tripping coil at inner components and parts.
Summary of the invention
The objective of the invention is to provides a kind of and can carry out the socket type earth-fault line-breaker with coil open circuit fault deixis of faulty indication when particularly open circuit conditions appears in tripping coil when inner some element for overcoming the deficiencies in the prior art.
The present invention is that the achieve the above object technical solution that adopted is as follows: the GFCI with coil open circuit fault deixis; comprise leakaging signal detecting circuit and be subjected to described leakaging signal detecting circuit control and the electromagnetic trip mechanism of action; described leakaging signal detecting circuit is a core with the electric leakage signal amplification circuit; rectifier bridge and RC filter circuit provide DC power supply for control circuit; the control output end of electric leakage signal amplification circuit is connected to the trigger electrode of dropout controllable silicon SCR 1; dropout controllable silicon SCR 1 is connected in the electric power loop of electromagnetic trip coil T3; described GFCI with coil open circuit fault deixis also is provided with the failure alarm circuit of the DC power supply control that is subjected to rectifier bridge; described failure alarm circuit sends alarm signal when rectifier bridge does not have DC power supply output; it is characterized in that: described electromagnetic trip coil T3 first end is connected with input power cord L through short circuit protection component; it is anodal and connect and compose the electric power loop of electromagnetic trip coil T3 through dropout controllable silicon SCR 1 and rectifier bridge and another input power cord N that second of electromagnetic trip coil T3 is connected to dropout controllable silicon SCR 1; one of described rectifier bridge exchanges end and is connected with power input N; another interchange end of rectifier bridge is connected with second end of electromagnetic trip coil T3 makes electromagnetic trip coil T3 be connected on the AC side of rectifier bridge simultaneously; described failure alarm circuit comprises that is connected across a current-limiting circuit and a circuit of LED that exchanges on the incoming line; be parallel with alarm controllable silicon SCR 2 on the circuit of LED; the trigger electrode of alarm controllable silicon SCR 2 is connected with dc power anode through triggering branch road, and described triggering branch road makes alarm controllable silicon SCR 2 be in conducting state.
Beneficial effect compared with prior art is: because described electromagnetic trip coil T3 of the present invention is connected on the AC side of rectifier bridge, therefore, when open fault appears in electromagnetic trip coil T3, causing DC power supply is zero, be subjected to the failure alarm circuit of the DC power supply control of rectifier bridge to send optical information prompting user and change timely, thereby eliminate safe hidden trouble.
The invention will be further described below in conjunction with the drawings and specific embodiments.
Description of drawings
Accompanying drawing 1 is a specific embodiment of the invention schematic appearance;
Accompanying drawing 2 is the electronic circuit schematic diagram of the specific embodiment of the invention;
Accompanying drawing 3 is the electronic circuit schematic diagram of another kind of specific embodiment.
Embodiment
As shown in Figure 1; GFCI with coil open circuit fault deixis still comprises pedestal 1; be provided with the loam cake 3 of jack 2; leakaging signal detecting circuit and be subjected to the control of described leakaging signal detecting circuit and the electromagnetic trip mechanism of action; reset key 4; feeler switch 5; grounding assembly; power supply input coupling assembling and load coupling assembling; its internal structure is similar to existing socket type earth-fault line-breaker with mounting means; wherein leakaging signal detecting circuit as shown in Figure 2; leakaging signal detecting circuit is a core with electric leakage signal amplification circuit RV4145; diode D1-D4 and resistance R 5; capacitor C 4 constitutes rectifier bridge and filter circuit provides DC power supply for RV4145; power line L; N all passes test magnetic ring coil T1 and neutral magnetic ring coil T2; the output of test magnetic ring coil T1 and neutral magnetic ring coil T2 all is connected to electric leakage signal and amplifies on the integrated RV4145; the control output end of electric leakage signal amplification circuit RV4145 is connected to the trigger electrode of dropout controllable silicon SCR 1; electromagnetic trip coil T3 first end is connected with input power cord L through short circuit protection component; it is anodal and through dropout controllable silicon SCR 1 that second of electromagnetic trip coil T3 is connected to dropout controllable silicon SCR 1; dc power cathode and rectifier bridge and another input power cord N connect and compose the electric power loop of electromagnetic trip coil T3; an interchange end of described rectifier bridge is connected with power input N, and another interchange end of rectifier bridge is connected with second end of electromagnetic trip coil T3 makes electromagnetic trip coil T3 be connected on the AC side of rectifier bridge simultaneously.The concrete form of failure alarm circuit can have multiple, as long as failure alarm circuit is controlled by the DC power supply of rectifier bridge, sending alarm signal when rectifier bridge does not have DC power supply output gets final product, in this specific embodiment, exchanging cross-over connection diode D6, the second current-limiting resistance R9 on the incoming line, the first current-limiting resistance R8 and LED 2 series arms formation failure alarm circuit, LED 2 is as the end-of-life indicator light.Be that the first current-limiting resistance R8 and LED 2 two ends are parallel with alarm controllable silicon SCR 2 on the circuit of LED, the trigger electrode of alarm controllable silicon SCR 2 is connected with dc power anode via the triggering branch road that the 3rd current-limiting resistance R10 constitutes, as shown in Figure 3, triggering branch road also can be to be in series by the 3rd current-limiting resistance R10 and voltage stabilizing didoe D7, the resistance of the 3rd current-limiting resistance R10 will make alarm controllable silicon SCR 2 be in conducting state, and the pressure drop deficiency that makes alarm controllable silicon SCR 2 two ends is so that LED 2 conductings are shinny.For improving interference free performance, prevent false triggering, between the trigger electrode of dropout controllable silicon SCR 1 and dc power cathode in parallel on anti-interference capacitor C5; The electrical short protection component adopts the short circuit protection component of fuse F1 or other deenergization lines under overcurrent situations as insuring resistance etc.The fusing value of fuse F1 is set at the electric current that GFCI normally resets, produces when threading off can not make fuse F1 fusing, having only in the power circuit of major loop and electric leakage signal amplification circuit has element the short-circuit fault to occur, when making electric current in the circuit greater than the fusing value of fuse F1, fuse F1 just can fuse.The position of loam cake 3 respective leds LED2 is provided with inspection hole or observation window 6.The electric leakage signal amplifying circuit of leakaging signal detecting circuit neither be unique, can also select the chip of identical or close function such as LM1851 or GK4145 integrated circuit for use.
The failure alarm circuit operation principle is as follows: when socket type earth-fault line-breaker operate as normal, the bigger resistance of the 3rd current-limiting resistance R10 makes alarm controllable silicon SCR 2 be in conducting state, and the pressure drop deficiency that makes alarm controllable silicon SCR 2 two ends is so that LED 2 conductings are shinny.When open fault appears in electromagnetic trip coil T3, DC power supply is zero, the trigger voltage that causes alarming controllable silicon SCR 2 is zero, and alarm controllable silicon SCR 2 is ended, and is connected across the circuit of LED that exchanges on the incoming line and sends optical information prompting user and change timely.Originally the GFCI that has coil open circuit fault deixis carries out the faulty indication except can open circuit conditions occur to tripping coil T3 the time, when arbitrary element such as electrochemical capacitor is short-circuited in the diode D1-D4 of rectifier bridge in the socket type earth-fault line-breaker or the RC filter circuit, the fuse F1 fusing of generating heat, the trigger voltage of alarm controllable silicon SCR 2 is zero, alarm controllable silicon SCR 2 is ended, the LED 2 same shinny alarm signals of sending, the prompting user in time changes.In addition, as test magnetic ring coil T1 and neutral magnetic ring coil T2 and 1 short circuit of dropout controllable silicon SCR, GFCI can thread off automatically, and cut-out is connected with load, and can not reset once more, also represents end-of-life.
Be the partial fault phenomenon and the end-of-life led status table of comparisons below:
| The element sequence number | Phenomenon of the failure | The end-of-life indicator light | Whether thread off |
| F1 | Open circuit | Bright | |
| T3 | Open circuit | Bright | |
| D1～D4 | Puncture short | Bright | |
| R5 | Short circuit, open circuit | Bright | |
| C4 | Short circuit | Bright | |
| IC | Puncture short | Bright | |
| SCR1 | Puncture short | Thread off | |
| SCR2 | Open circuit | Bright | |
| R10 | Open circuit | Bright | |
| D7 | Open circuit | Bright | |
| C6 | Puncture short | Thread off | |
| T1 | Short circuit | Thread off | |
| T2 | Short circuit | Thread off | |
| T3 | Short circuit | Bright |
Claims (3)
1; a kind of socket type earth-fault line-breaker with coil open circuit fault deixis; comprise leakaging signal detecting circuit and be subjected to described leakaging signal detecting circuit control and the electromagnetic trip mechanism of action; described leakaging signal detecting circuit is a core with the electric leakage signal amplification circuit; rectifier bridge and RC filter circuit provide DC power supply for control circuit; the control output end of electric leakage signal amplification circuit is connected to the trigger electrode of dropout controllable silicon (SCR1); dropout controllable silicon (SCR1) is connected in the electric power loop of electromagnetic trip coil (T3); described socket type earth-fault line-breaker with coil open circuit fault deixis also is provided with the failure alarm circuit of the DC power supply control that is subjected to rectifier bridge; described failure alarm circuit sends alarm signal when rectifier bridge does not have DC power supply output; it is characterized in that: described electromagnetic trip coil (T3) first end is connected with input power cord L through short circuit protection component; it is anodal and connect and compose the electric power loop of electromagnetic trip coil (T3) through dropout controllable silicon (SCR1) and rectifier bridge and another input power cord N that second of electromagnetic trip coil (T3) is connected to dropout controllable silicon (SCR1); one of described rectifier bridge exchanges end and is connected with power input N; another interchange end of rectifier bridge is connected with second end of electromagnetic trip coil (T3) makes electromagnetic trip coil (T3) be connected on the AC side of rectifier bridge simultaneously; described failure alarm circuit comprises that is connected across a current-limiting circuit and a circuit of LED that exchanges on the incoming line; be parallel with alarm controllable silicon (SCR2) on the circuit of LED; the trigger electrode of alarm controllable silicon (SCR2) is connected with dc power anode through triggering branch road, and described triggering branch road makes alarm controllable silicon (SCR2) be in conducting state.
2, the socket type earth-fault line-breaker with coil open circuit fault deixis according to claim 1; it is characterized in that: described short circuit protection component is fuse (F1); described current-limiting circuit and circuit of LED are in series by diode (D6), second current-limiting resistance (R9), first current-limiting resistance (R8) and light-emitting diode (LED2); alarm controllable silicon (SCR 2) is connected in parallel on first current-limiting resistance (R8) and the light-emitting diode (LED2), triggers route the 3rd current-limiting resistance (R10) and constitutes.
3, the socket type earth-fault line-breaker with coil open circuit fault deixis according to claim 1; it is characterized in that: described short circuit protection component is fuse (F1); described current-limiting circuit and circuit of LED are in series by diode (D6), second current-limiting resistance (R9), first current-limiting resistance (R8) and light-emitting diode (LED2); alarm controllable silicon (SCR 2) is connected in parallel on first current-limiting resistance (R8) and the light-emitting diode (LED2), triggers route the 3rd current-limiting resistance (R10) and voltage stabilizing didoe (D7) and is in series.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101347512A CN100553060C (en) | 2007-10-16 | 2007-10-16 | Socket type earth-fault line-breaker with coil open circuit fault deixis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101347512A CN100553060C (en) | 2007-10-16 | 2007-10-16 | Socket type earth-fault line-breaker with coil open circuit fault deixis |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101202434A CN101202434A (en) | 2008-06-18 |
| CN100553060C true CN100553060C (en) | 2009-10-21 |
Family
ID=39517452
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007101347512A Expired - Fee Related CN100553060C (en) | 2007-10-16 | 2007-10-16 | Socket type earth-fault line-breaker with coil open circuit fault deixis |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100553060C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102610450B (en) * | 2012-02-04 | 2014-07-02 | 陈泽 | Socket-type grounded faulty line breaker |
| EP3035360B1 (en) * | 2014-12-16 | 2017-03-08 | General Electric Technology GmbH | Improvements in or relating to circuit interruption devices |
| CN105977907B (en) * | 2016-01-08 | 2019-01-11 | 上海蕴原电器有限公司 | Electricity-saving type ground-fault interrupter |
| CN110676808B (en) * | 2019-09-17 | 2021-12-03 | 深圳市晶扬电子有限公司 | Silicon controlled rectifier fault self-testing method, circuit, connector and electrical equipment |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5541800A (en) * | 1995-03-22 | 1996-07-30 | Hubbell Incorporated | Reverse wiring indicator for GFCI receptacles |
| CN2896630Y (en) * | 2006-05-23 | 2007-05-02 | 陈贵 | GFCI with indication function of ending service life |
| CN2896506Y (en) * | 2006-03-15 | 2007-05-02 | 陈贵 | GFCI with fault indication function |
-
2007
- 2007-10-16 CN CNB2007101347512A patent/CN100553060C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5541800A (en) * | 1995-03-22 | 1996-07-30 | Hubbell Incorporated | Reverse wiring indicator for GFCI receptacles |
| CN2896506Y (en) * | 2006-03-15 | 2007-05-02 | 陈贵 | GFCI with fault indication function |
| CN2896630Y (en) * | 2006-05-23 | 2007-05-02 | 陈贵 | GFCI with indication function of ending service life |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101202434A (en) | 2008-06-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101847802B (en) | Electric leakage protection plug | |
| CN102544930B (en) | Leakage protection plug | |
| CN103208776A (en) | Breaker circuit with fault self-detection function | |
| CN204144599U (en) | A kind of leakage protecting plug | |
| US7791850B2 (en) | Ground fault circuit interrupter control circuit | |
| CN101546902A (en) | Device for monitoring working state of fuse | |
| CN102324717B (en) | Leakage protection device | |
| CN100553060C (en) | Socket type earth-fault line-breaker with coil open circuit fault deixis | |
| CN201369470Y (en) | Earth-leakage protecting plug | |
| CN202957575U (en) | Electric leakage breaker | |
| CN105896196A (en) | Intelligent electric leakage protection plug | |
| CN101872956B (en) | Leakage current detection protection circuit | |
| CN202817702U (en) | Current leakage protection device | |
| CN201181835Y (en) | Multifunctional earth-leakage protective equipment | |
| CN201094134Y (en) | Residual current operation protector with self-diagnostic function | |
| CN103107514B (en) | The detection means of defence of electricity leakage on outer surface of electrical equipment and system | |
| CN200976338Y (en) | GFCI having full fault indication and forced release function | |
| CN201230196Y (en) | Apparatus for monitoring working state of fuse | |
| CN101388540A (en) | Leakage protection circuit having life end detection and display functions | |
| CN2896506Y (en) | GFCI with fault indication function | |
| CN2896507Y (en) | High-safety earthing-fault-line breaker | |
| CN101944716B (en) | Electricity leakage detection protective circuit | |
| CN2896630Y (en) | GFCI with indication function of ending service life | |
| CN2909508Y (en) | GFCI with service life end indicating function | |
| CN2911950Y (en) | GFCI having functions of fault indicating and forced tripping |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180320 Address after: 516023 Guangdong city of Huizhou province Xiaojinkou Kim Hing Street No. 11 Patentee after: Huizhou confidence Electrical Appliance Manufacturing Co., Ltd. Address before: 325604 Liushi Town, Yueqing, Zhejiang province Xue Zhai Industrial Zone Patentee before: Chen Gui |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091021 Termination date: 20181016 |