CN2896506Y - GFCI with fault indication function - Google Patents
GFCI with fault indication function Download PDFInfo
- Publication number
- CN2896506Y CN2896506Y CN 200620070453 CN200620070453U CN2896506Y CN 2896506 Y CN2896506 Y CN 2896506Y CN 200620070453 CN200620070453 CN 200620070453 CN 200620070453 U CN200620070453 U CN 200620070453U CN 2896506 Y CN2896506 Y CN 2896506Y
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- CN
- China
- Prior art keywords
- circuit
- photoelectrical coupler
- gfci
- diode
- fuse
- 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 - Lifetime
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Abstract
The utility model relates to a grounding malfunction circuit breaker with fault-indicating function, which includes a creepage signal testing circuit and an electromagnetic tripping mechanism controlled and motivated by the creepage signal testing circuit. Wherein, the testing circuit places a creepage signal amplifying integrated circuit as the core, and is arranged with a malfunction alarm circuit, a rectifier bridge and a RC filter circuit to provide DC for the control circuit. The controlling output terminal of the creepage signal amplifying integrated circuit is connected to the igniter of the silicon-controlled rectifier (SCR). The malfunction alarm circuit includes a short-circuit protection element in serial connection to the AC input lines of the rectifier bridge, and an acousto-optical alarm circuit under the control of triggers from the protective element. In the case of the utility model of GFCI, when any diode of the rectifier bridge in the creepage signal testing circuit or the electrolytic capacitor of the RC filter circuit undergoes short circuit, the short-circuit protection element acts to trigger the acousto-optical alarm circuit to give off acousto-optic information to remind the user to make changes in time, thereby eliminating potential safety risks.
Description
Technical field
The utility model relates to a kind of earth fault line breaker (abbreviating GFCI as) of female type, the GFCI that particularly has fault indication function.
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.Development through two more than ten years, in GFCI manufacturer, be engaged in correlative study, under personnel's such as exploitation and test the joint efforts struggle and research of technique, no matter GFCI is on product quality, still in specification requirement and the satisfied requirement of using, all reached higher level, 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.
The utility model content
The purpose of this utility model is to provide a kind of when causing the GFCI cisco unity malfunction after inner some component wear for overcoming the deficiencies in the prior art, can make the user in time find the socket type earth-fault line-breaker with fault indication function of failure condition.
The utility model is that the achieve the above object technical solution that adopted is as follows: have the electromagnetic trip mechanism that the GFCI of fault indication function comprises leakaging signal detecting circuit and moved by described leakaging signal detecting circuit control; 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 controllable silicon SCR; GFCI with fault indication function is provided with failure alarm circuit, and failure alarm circuit comprises that is connected on the audible and visual alarm circuit that rectifier bridge exchanges the short circuit protection component in the incoming line and is subjected to its triggering control.
Beneficial effect compared with prior art is: GFCI of the present utility model is when arbitrary diode of rectifier bridge in its leakaging signal detecting circuit or the short circuit of RC filter circuit electrochemical capacitor; short circuit protection component action triggers audible and visual alarm circuit sends acoustic and light information prompting user and changes timely, thereby eliminates safe hidden trouble.
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
Description of drawings:
Accompanying drawing 1 is the utility model specific embodiment schematic appearance;
Accompanying drawing 2 is the electronic circuit schematic diagram of the utility model specific embodiment.
Embodiment:
As shown in Figure 1, socket type earth-fault line-breaker with fault indication function 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, rectifier bridge exchanges end and power input L, N connects, electromagnetic trip coil T3 one end is connected with input power cord L, the other end is connected to the controllable silicon SCR positive pole and is connected with another input power cord N with rectifier bridge through controllable silicon SCR, the controllable silicon SCR negative pole is connected with the direct current negative pole, 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 that electric leakage signal amplifies integrated RV4145 is connected to the trigger electrode of controllable silicon SCR, for improving interference free performance, prevent false triggering, between the trigger electrode of controllable silicon SCR and negative pole in parallel on anti-interference capacitor C5; Failure alarm circuit comprises that one is connected on the short circuit protection component in the rectifier bridge interchange incoming line and is subjected to its audible and visual alarm electrical short protection component that triggers control to adopt the short circuit protection component of fuse F1 or other deenergization lines under overcurrent situations as insurance resistance; the audible and visual alarm circuit comprises photoelectrical coupler U1; diode D5; current-limiting resistance R8 and light-emitting diode D6; diode D5; current-limiting resistance R8 be connected in parallel on fuse F1 two ends after photoelectrical coupler U1 input is connected; photoelectrical coupler U1 output be connected the DC power supply two ends after light-emitting diode D6 connects; also can be connect with buzzer the back or with light-emitting diode D6; be connected the DC power supply two ends after the parallel branch series connection of buzzer, the position of loam cake 3 respective leds D6 is provided with inspection hole or observation window 6.The electric leakage signal amplifying circuit of leakaging signal detecting circuit also can be selected LM1851 or GK4145 integrated circuit for use.Light-emitting diode D6 is a malfunction indicator lamp; For avoiding this novel earthing fault line-breaker to have weak current to pass through light-emitting diode D6 when the operate as normal, shunt capacitance C7 in parallel on light-emitting diode D6.
The failure alarm circuit operation principle is as follows: when socket type earth-fault line-breaker operate as normal, photoelectrical coupler U1 input has only utmost point weak current to pass through, deficiency is so that the conducting of photoelectrical coupler U1 output, allows the shinny or buzzer sounding of light-emitting diode D6; 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, this moment, photoelectrical coupler U1 input had big electric current to pass through, be enough to make the conducting of photoelectrical coupler U1 output, allow the alarm of the shinny or buzzer sounding of light-emitting diode D6; When short-circuit conditions appears in the resistance R 5 in the socket type earth-fault line-breaker RC filter circuit or controllable silicon SCR, the electric adhesive of electromagnetic trip coil T3, the output of socket type earth-fault line-breaker interrupt load power supply, the prompting user in time changes.
Claims (4)
1; a kind of GFCI with fault indication function; 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 controllable silicon SCR; it is characterized in that: described GFCI with fault indication function is provided with failure alarm circuit, and failure alarm circuit comprises that is connected on the audible and visual alarm circuit that rectifier bridge exchanges the short circuit protection component in the incoming line and is subjected to its triggering control.
2, the GFCI with fault indication function according to claim 1; it is characterized in that: described short circuit protection component is fuse (F1); described audible and visual alarm circuit comprises photoelectrical coupler (U1), diode (D5), current-limiting resistance (R8) and light-emitting diode (D6); described diode (D5), current-limiting resistance (R8) and be connected in parallel on fuse (F1) two ends after photoelectrical coupler (U1) input is connected, described photoelectrical coupler (U1) output be connected the DC power supply two ends after light-emitting diode (D6) is connected.
3, the GFCI with fault indication function according to claim 1; it is characterized in that: described short circuit protection component is fuse (F1); described audible and visual alarm circuit comprises photoelectrical coupler (U1), diode (D5), current-limiting resistance (R8) and buzzer; described diode (D5), current-limiting resistance (R8) and be connected in parallel on fuse (F1) two ends after photoelectrical coupler (U1) input is connected, described photoelectrical coupler (U1) output be connected the DC power supply two ends after buzzer is connected.
4, the GFCI with fault indication function according to claim 1; it is characterized in that: described short circuit protection component is fuse (F1); described audible and visual alarm circuit comprises photoelectrical coupler (U1), diode (D5), current-limiting resistance (R8) and buzzer; described diode (D5), current-limiting resistance (R8) and be connected in parallel on fuse (F1) two ends after photoelectrical coupler (U1) input is connected, described photoelectrical coupler (U1) output be connected the DC power supply two ends after the parallel branch of light-emitting diode (D6), buzzer is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620070453 CN2896506Y (en) | 2006-03-15 | 2006-03-15 | GFCI with fault indication function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620070453 CN2896506Y (en) | 2006-03-15 | 2006-03-15 | GFCI with fault indication function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2896506Y true CN2896506Y (en) | 2007-05-02 |
Family
ID=38066079
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620070453 Expired - Lifetime CN2896506Y (en) | 2006-03-15 | 2006-03-15 | GFCI with fault indication function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2896506Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100553060C (en) * | 2007-10-16 | 2009-10-21 | 陈贵 | Socket type earth-fault line-breaker with coil open circuit fault deixis |
| CN102610450A (en) * | 2012-02-04 | 2012-07-25 | 陈泽 | Socket-type grounded faulty line breaker |
| CN103208776A (en) * | 2013-01-23 | 2013-07-17 | 陈泽 | Breaker circuit with fault self-detection function |
-
2006
- 2006-03-15 CN CN 200620070453 patent/CN2896506Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100553060C (en) * | 2007-10-16 | 2009-10-21 | 陈贵 | Socket type earth-fault line-breaker with coil open circuit fault deixis |
| CN102610450A (en) * | 2012-02-04 | 2012-07-25 | 陈泽 | Socket-type grounded faulty line breaker |
| CN102610450B (en) * | 2012-02-04 | 2014-07-02 | 陈泽 | Socket-type grounded faulty line breaker |
| CN103208776A (en) * | 2013-01-23 | 2013-07-17 | 陈泽 | Breaker circuit with fault self-detection function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20070502 |
|
| EXPY | Termination of patent right or utility model |