CN102931633A - Leakage protection circuit with real-time failure display function - Google Patents
Leakage protection circuit with real-time failure display function Download PDFInfo
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- CN102931633A CN102931633A CN2012103773411A CN201210377341A CN102931633A CN 102931633 A CN102931633 A CN 102931633A CN 2012103773411 A CN2012103773411 A CN 2012103773411A CN 201210377341 A CN201210377341 A CN 201210377341A CN 102931633 A CN102931633 A CN 102931633A
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Abstract
The invention provides a leakage protection circuit with a real-time failure display function. The leakage protection circuit comprises a normally-on combination switch and a fault indicating lamp circuit, wherein the combination switch is linked with a reset button and simultaneously serves as a leakage current generating switch and an end-of-life detecting switch; a movable contact terminal of the combination switch is contacted and connected with an electric conduction contact terminal instantly when the reset button is pressed, so that a leakage current generating simulation circuit which passes through double induction coils in a crossing manner is formed by trip coils; the movable contact terminal of the combination switch is separated from the electric conduction contact terminal when the reset button drives a main loop switch to be closed and reset successfully; and the fault indicating lamp circuit is connected with the two ends of each trip coil in parallel, and a fault indicating lamp is lighted when the trip coils are in open circuit. The leakage protection circuit has the beneficial effects that due to the combination of the combination switch and the fault indicating lamp, the leakage protection circuit can give an alarm timely when faults occur, and is safe and convenient to use; the leakage current generating simulating switch and a test switch are combined to to form a whole body, so that a circuit structure is simplified; and as the circuit is arranged reasonably, the temperature rise can be reduced effectively, and the light striking can be prevented.
Description
Technical field
The present invention relates to is a kind of leakage protection circuit with instant fault Presentation Function that is installed in the earth leakage protective socket.
Background technology
Raising along with the electrical safety requirement; but state indication etc. function is threaded off, carried out when resetting success to mechanical forced when earth leakage protective socket need to have earth leakage protective, reverse-connection protection, end-of-life; existing leakage protection circuit does not have instant fault Presentation Function usually; namely in the normal use procedure after resetting successfully, circuit can not carry out instant playback when the components and parts fault occurring suddenly.Usually; only can bear in short-term large electric current owing to tripping coil in the elements such as the control chip in the leakage protection circuit, controllable silicon, tripping coil; the probability that tripping coil blows in the various faults is the highest, also tends to cause tripping coil to blow if control chip or controllable silicon damage.Therefore whether keep normally substantially can finish instant fault Presentation Function by display circuit monitoring tripping coil.Also there are some to have work state display function in the existing leakage protection circuit, be that 201020287432.2 utility model patent discloses a kind of leakage current detection protection circuit such as the patent No., it comprises induction coil for detection of leakage current, self-excitation coil, control chip for detection of the low resistance fault, the tripping coil that is built-in with iron core, controllable silicon, with the major loop switch of reset button interlock etc.; This leakage current detection protection circuit also comprises a display circuit, and this display circuit is by dichromatic LED, and diode and current-limiting resistance consist of; After reset button resets, only have a kind of light-emitting diode of color bright in the dichromatic LED; After reset button was threaded off, the light-emitting diode of two kinds of colors in the dichromatic LED was all bright; When this leakage current detection protection circuit wiring was correct, the light-emitting diode of two kinds of colors of dichromatic LED Cao was all bright, otherwise when this leakage current detection protection circuit wiring error, the light-emitting diode of two kinds of colors in the dichromatic LED does not all work.
Existing leakage protection circuit generally all is provided with and the simulation leakage current generating switch of reset button interlock and the Test Switchboard that links with testing button, and circuit structure is complicated.The patent No. is that 201020287432.2 utility model patent exists above-mentioned situation equally, and therefore, the application provides a kind of will simulate the leakage current generating switch and Test Switchboard unites two into one and can in time carry out the leakage protection circuit that fault shows.
Summary of the invention
The problems referred to above for prior art exists the invention provides a kind of leakage protection circuit with instant fault Presentation Function.
For achieving the above object, the present invention institute is by the following technical solutions:
Leakage protection circuit with instant fault Presentation Function, comprise power input, power output end, load end, two induction coil L1 for detection of leakage current and low resistance fault, L2, control chip IC1, be built-in with the tripping coil S0L of iron core, controllable silicon V4, major loop switch (KR2-1 with the reset button interlock, KR2-2), also comprise one with reset button interlock, while is as the open type unit switch KR-2 of leakage current generating switch and life-span stop detection switch, the moving contact jaw of unit switch is pressed moment and the conducting of conductive contact end in contact in reset button, make tripping coil SOL form the simulation leakage current generating loop that intersection is passed two induction coils, the moving contact jaw of unit switch separates with the conductive contact end when reset button drive major loop switch closure resets success; Also be provided with malfunction indicator lamp LED1-R circuit, malfunction indicator lamp LED1-R circuit is in parallel with the tripping coil two ends, lights when tripping coil is opened a way.
Further, the moving contact jaw of described unit switch links to each other with one of power output end, unit switch has a pair ofly presses moment contact simultaneously conducting with moving contact jaw conductive contact end in reset button, and the major loop switch that one of conductive contact end and homophase are positioned at the moving contact jaw of unit switch moves contact jaw and contact conducting when the major loop switch is not closed; Another conductive contact end of unit switch links to each other in one of the moving contact jaw of unit switch by out of phase in current-limiting resistance and the power input, follow reset button at the moving contact jaw of unit switch and press the life-span stop detection loop that moment formation intersection is passed two induction coils, this conductive contact end links to each other with the controllable silicon negative electrode through diode V1C simultaneously; Out of phase links to each other in one of the moving contact jaw of unit switch in silicon controlled negative electrode and the power input, and the input of tripping coil is positioned at one of the moving contact jaw of unit switch with homophase and links to each other, and formation does not intersect the tripping coil path that passes pair induction coils.
Further, the moving contact jaw of described major loop switch (KR2-1, KR2-2) is positioned at the below of major loop switches conductive contact jaw, follow reset button lead closure when lifting, one of conductive contact end of described unit switch contacts conducting by a terminal that is suspended in one of major loop switch below with this major loop switches conductive contact jaw when the major loop switch is not closed.
Further, also comprise a working station indicator LED1-G, the anode of working station indicator links to each other with the power input of out of phase in the moving contact jaw of unit switch by a resistance R 5, diode V2, the negative electrode of working station indicator links to each other with the power end of control chip IC1, and working station indicator LED1-G is also bright through link to each other with one of power input successful time point that resets of tripping coil.
Preferably, the moving contact jaw of described major loop switch (KR2-1, KR2-2) is positioned at the top of major loop switches conductive contact jaw, depresses closure when reset button is depressed moment and simultaneously closed reduction success of unit switch; The moving contact jaw of described unit switch links to each other with one of power output end, the conductive contact end of unit switch links to each other in one of the moving contact jaw of unit switch by out of phase in current-limiting resistance H2 and the power input, follow reset button at the moving contact jaw of unit switch and press the life-span stop detection loop that moment formation intersection is passed two induction coils, unit switch conductive contact end links to each other with the controllable silicon negative electrode through diode V1C simultaneously; Out of phase links to each other in another phase power input of the moving contact jaw of unit switch in silicon controlled negative electrode and the power input, another phase power input that the input of tripping coil and homophase are positioned at the moving contact jaw of unit switch links to each other, forms not intersect the tripping coil path that passes pair induction coils.
Preferably, described power output end and load end respectively are provided with the pair of conductive contact jaw, the moving contact jaw of major loop switch (KR2-1, KR2-2) is positioned at the below of major loop switches conductive contact jaw, follows the reset button lead and consists of up and down overlap condition of contact with the conductive contact end in contact of power output end and load end is closed simultaneously when lifting; The moving contact jaw of described unit switch links to each other with one of power output end, unit switch has a pair ofly presses moment contact simultaneously conducting with moving contact jaw conductive contact end in reset button, and the major loop switch that one of conductive contact end and homophase are positioned at the moving contact jaw of unit switch moves contact jaw and contact conducting when the major loop switch is not closed; Another conductive contact end of unit switch links to each other in one of the moving contact jaw of unit switch by out of phase in current-limiting resistance and the power input, follows reset button at the moving contact jaw of unit switch and presses moment and form and intersect the life-span stop detection loop of passing pair induction coils; Silicon controlled negative electrode homophase in diode V1C and power output end is positioned at one of the moving contact jaw of unit switch and links to each other, out of phase links to each other in one of the moving contact jaw of unit switch in the input of tripping coil and the power input that passes two induction coils, forms not intersect the tripping coil path that passes pair induction coils.
Preferably, described power output end and load end respectively are provided with the pair of conductive contact jaw, the moving contact jaw of major loop switch (KR2-1, KR2-2) is positioned at the below of major loop switches conductive contact jaw, follows the reset button lead closed with the conductive contact end in contact of power output end and load end simultaneously when lifting; The moving contact jaw of described unit switch links to each other with one of power source loads sleeve end, unit switch has a pair ofly presses moment contact simultaneously conducting with moving contact jaw conductive contact end in reset button, and the major loop switch that one of conductive contact end and homophase are positioned at the moving contact jaw of unit switch moves contact jaw and contact conducting when the major loop switch is not closed; Another conductive contact end of unit switch links to each other in one of the moving contact jaw of unit switch by out of phase in a current-limiting resistance (H2) and the power input, follows reset button at the moving contact jaw of unit switch and presses moment and form and intersect the life-span stop detection loop of passing pair induction coils; Silicon controlled negative electrode out of phase in diode V1C and the power input that passes two induction coils links to each other in one of the moving contact jaw of unit switch, homophase is positioned at one of the moving contact jaw of unit switch and links to each other in the input of tripping coil and the power source loads sleeve end, forms not intersect the tripping coil path that passes pair induction coils.
Preferably, described power output end and load end respectively are provided with the pair of conductive contact jaw, the major loop switch has two pairs of moving contact jaws that cooperate with power output end and load end conductive contact end respectively, moving contact jaw is positioned at the below of major loop switches conductive contact jaw, follows the reset button lead closed with the conductive contact end in contact of power output end and load end simultaneously when lifting; The moving contact jaw of described unit switch links to each other with one of power input that passes two induction coils by a current-limiting resistance, the conductive contact end of unit switch links to each other with the power input of another out of phase, follows reset button at the moving contact jaw of unit switch and presses the life-span stop detection loop that moment formation intersection is passed two induction coils; Silicon controlled negative electrode out of phase in diode V1C and the power input that passes two induction coils links to each other in one of the moving contact jaw of unit switch, homophase is positioned at one of the moving contact jaw of unit switch and links to each other in the input of tripping coil and the power input that passes two induction coils, forms not intersect the tripping coil path that passes pair induction coils.
Preferably, described power output end and load end respectively are provided with the pair of conductive contact jaw, the moving contact jaw of major loop switch (KR2-1, KR2-2) is positioned at the below of major loop switches conductive contact jaw, follows the reset button lead closed with the conductive contact end in contact of power output end and load end simultaneously when lifting; The moving contact jaw of described unit switch links to each other with one of power input that passes two induction coils, the conductive contact end of unit switch links to each other with the power input of another out of phase by a current-limiting resistance, follows reset button at the moving contact jaw of unit switch and presses the life-span stop detection loop that moment formation intersection is passed two induction coils; Silicon controlled negative electrode homophase in diode V1C and the power input that passes two induction coils is positioned at one of the moving contact jaw of unit switch and links to each other, out of phase links to each other in one of the moving contact jaw of unit switch in the input of tripping coil and the power input that passes two induction coils, forms not intersect the tripping coil path that passes pair induction coils.
Preferably, described power output end and load end respectively are provided with the pair of conductive contact jaw, the moving contact jaw of major loop switch (KR2-1, KR2-2) is positioned at the top of major loop switches conductive contact jaw, and following the reset button lead, to depress moment simultaneously closed with the conductive contact end in contact of power output end and load end; The moving contact jaw of described unit switch links to each other with one of power output end or load sleeve end, the conductive contact end of unit switch links to each other with the power input of another out of phase by a current-limiting resistance, follows reset button at the moving contact jaw of unit switch and presses the life-span stop detection loop that moment formation intersection is passed two induction coils; Silicon controlled negative electrode out of phase in diode V1C and power output end or load sleeve end links to each other in one of the moving contact jaw of unit switch, homophase is positioned at one of the moving contact jaw of unit switch and links to each other in the input of tripping coil and the power output end, forms not intersect the tripping coil path that passes pair induction coils.
Preferably, described power output end and load end respectively are provided with the pair of conductive contact jaw, the moving contact jaw of major loop switch (KR2-1, KR2-2) is positioned at the top of major loop switches conductive contact jaw, and following the reset button lead, to depress moment simultaneously closed with the conductive contact end in contact of power output end and load end; The moving contact jaw of described unit switch links to each other with one of power output end, the conductive contact end of unit switch links to each other with the power input of another out of phase by a current-limiting resistance, follows reset button at the moving contact jaw of unit switch and presses the life-span stop detection loop that moment formation intersection is passed two induction coils; The silicon controlled negative electrode is positioned at one of the moving contact jaw of unit switch by homophase in a terminal that is suspended in the moving contact jaw of major loop switch below and the power input that passes two induction coils and links to each other when the major loop switch closure, the input of tripping coil links to each other in one of the moving contact jaw of unit switch by out of phase in a terminal that is suspended in the moving contact jaw of major loop switch below and the power input that passes two induction coils, forms not intersect the tripping coil path that passes pair induction coils.
Preferably, described power output end and load end respectively are provided with the pair of conductive contact jaw, the moving contact jaw of major loop switch (KR2-1, KR2-2) is positioned at the top of major loop switches conductive contact jaw, and following the reset button lead, to depress moment simultaneously closed with the conductive contact end in contact of power output end and load end; The moving contact jaw of described unit switch links to each other with one of power output end, the conductive contact end of unit switch links to each other with the power input of another out of phase by a current-limiting resistance, follows reset button at the moving contact jaw of unit switch and presses the life-span stop detection loop that moment formation intersection is passed two induction coils; Silicon controlled negative electrode out of phase in diode V1C and power input links to each other in one of the moving contact jaw of unit switch, homophase is positioned at one of the moving contact jaw of unit switch and links to each other in the input of tripping coil and the power input, forms not intersect the tripping coil path that passes pair induction coils.
Another preferred version as malfunction indicator lamp, the negative electrode of described malfunction indicator lamp LED1-R links to each other with the power input of out of phase in the moving contact jaw of unit switch by a resistance R 5, diode V1b, and the output of the anode tripping coil of malfunction indicator lamp links to each other.
Further, comprise that also one is used for the timer DSQ of timely checking circuit functional completeness, the power end Vcc of timer DSQ links to each other with the tripping coil output, the output OUT of timer DSQ links to each other with the gate pole of controllable silicon V4, the earth terminal of timer DSQ links to each other with the earth terminal of control chip, also links to each other with the controllable silicon negative electrode.
Further, the moving contact jaw of described major loop switch (KR2-1, KR2-2) is provided with the metal discharge sheet of a pair of matched in clearance, and the front end of metal discharge sheet has discharge cambered surface or discharge tip.
Further, quiet conductive contact end one end of described unit switch is suspended in the top of movable contact link, and the other end links to each other with power input, and the middle part has and cooperate the discharge part 35A that consists of one group of discharge conductor with another power supply conductivity splaying.
Further, described unit switch conductive contact end 35B draws a terminal with discharge part 35A, and this terminal links to each other with one of power input; Described testing button is linkedly set with a quiet contact conductor, and quiet contact conductor one end 25B contacts conducting movably with the terminal that unit switch conductive contact end is drawn
Compared with prior art, beneficial effect of the present invention is: be combined with malfunction indicator lamp by unit switch, and instant playback operating state and when breaking down, in time reminding in the course of work after resetting successfully, safe and convenient to use; Simulation leakage current generating switch and Test Switchboard unite two into one, and circuit structure is simplified; Circuit arranges rationally, effectively reduces temperature rise, prevents sparking; Timer timely checking circuit functional completeness is set, and the major loop switch arranges the metal discharge sheet, further improves fail safe.
Description of drawings
Fig. 1 is the circuit diagram of the embodiment of the invention one;
Fig. 2 is the circuit diagram of the embodiment of the invention two;
Fig. 3 is the circuit diagram of the embodiment of the invention three;
Fig. 4 is the circuit diagram of the embodiment of the invention four;
Fig. 5 is the circuit diagram of the embodiment of the invention five;
Fig. 6 is the circuit diagram of the embodiment of the invention six;
Fig. 7 is the circuit diagram of the embodiment of the invention seven;
Fig. 8 is the circuit diagram of the embodiment of the invention eight;
Fig. 9 is the circuit diagram of the embodiment of the invention nine;
Figure 10 is the circuit diagram of the embodiment of the invention ten.
Embodiment
The present invention is further detailed explanation below in conjunction with drawings and Examples:
Implement one
With reference to shown in Figure 1, leakage protection circuit with instant fault Presentation Function, comprise power input, power output end, load end, two induction coil L1 for detection of leakage current and low resistance fault, L2, control chip IC1, be built-in with the tripping coil S0L of iron core, controllable silicon V4, major loop switch (KR2-1 with the reset button interlock, KR2-2), also comprise one with reset button interlock, while is as the open type unit switch KR-2 of leakage current generating switch and life-span stop detection switch, the moving contact jaw of unit switch is pressed moment and the conducting of conductive contact end in contact in reset button, make tripping coil SOL form the simulation leakage current generating loop that intersection is passed two induction coils, the moving contact jaw of unit switch separates with the conductive contact end when reset button drive major loop switch closure resets success; Also be provided with malfunction indicator lamp LED1-R circuit (comprising LED1-R, R6, V3 in this example), malfunction indicator lamp LED1-R circuit is in parallel with tripping coil SOL two ends, lights when tripping coil is opened a way.
The moving contact jaw of unit switch KR-2 links to each other with one of power output end (this example is the live wire end), unit switch KR-2 has and a pair ofly presses moment contact simultaneously conducting with moving contact jaw conductive contact end in reset button, and the major loop K switch R2-1 that one of conductive contact end and homophase are positioned at the moving contact jaw of unit switch moves contact jaw and contact conducting when the major loop switch is not closed; Another conductive contact end of unit switch KR-2 links to each other in a phase WHITE of the moving contact jaw of unit switch by out of phase in current-limiting resistance H2 and the power input, follow reset button at the moving contact jaw of unit switch and press the life-span stop detection loop that moment formation intersection is passed two induction coil L1, L2, this conductive contact end links to each other with the controllable silicon negative electrode through diode V1c simultaneously; Out of phase links to each other in a phase WHITE of the moving contact jaw of unit switch in silicon controlled negative electrode and the power input, the phase HOT that the input of tripping coil and homophase are positioned at the moving contact jaw of unit switch links to each other, forms not intersect the tripping coil path that passes pair induction coils.
The moving contact jaw of major loop switch (KR2-1, KR2-2) is positioned at the below of major loop switches conductive contact jaw, follow reset button lead closure when lifting, one of conductive contact end of described unit switch contacts conducting by a terminal that is suspended in one of major loop switch below with this major loop switches conductive contact jaw when the major loop switch is not closed.
For when resetting success, carrying out the operating state indication; this leakage protection circuit also comprises a working station indicator LED1-G; the anode of working station indicator links to each other with the power input of out of phase in the moving contact jaw of unit switch by a resistance R 5, diode V2; the anode of working station indicator links to each other with the power end of control chip IC1, and working station indicator LED1-G is bright at the successful time point that resets through the tripping coil channel selector.
For further optimizing the physical structure in the earth leakage protective socket; quiet conductive contact end one end of unit switch is suspended in the top of movable contact link; the other end links to each other with power input, and the middle part has and cooperate the discharge part 35A that consists of one group of discharge conductor with another power supply conductivity splaying.Unit switch conductive contact end 35B draws a terminal with discharge part 35A, and this terminal links to each other with one of power input; Described testing button is linkedly set with a quiet contact conductor, and quiet contact conductor one end 25B contacts conducting movably with the terminal that unit switch conductive contact end is drawn.
Embodiment two
With reference to shown in Figure 2, the moving contact jaw of the major loop switch of the present embodiment (KR2-1, KR2-2) is positioned at the top of major loop switches conductive contact jaw, depresses closure when reset button TEST depresses moment and reset success; The moving contact jaw of described unit switch KR-2 links to each other with one of power output end, the conductive contact end of unit switch links to each other in one of the moving contact jaw of unit switch by out of phase in current-limiting resistance H2 and the power input, follow reset button at the moving contact jaw of unit switch and press the life-span stop detection loop that moment formation intersection is passed two induction coils, unit switch conductive contact end links to each other with controllable silicon V4 negative electrode simultaneously; Silicon controlled negative electrode out of phase in diode V1c and power input links to each other in one of the moving contact jaw of unit switch, the input of tripping coil SOL and homophase are positioned at one of the moving contact jaw of unit switch and link to each other, form not intersect the tripping coil path that passes couple induction coil L1, L2.
Embodiment three
With reference to shown in Figure 3, the present embodiment power output end and load end respectively are provided with the pair of conductive contact jaw, the moving contact jaw of major loop switch (KR2-1, KR2-2) is positioned at the below of major loop switches conductive contact jaw, follows the reset button lead and consists of up and down overlap condition of contact with the conductive contact end in contact of power output end and load end is closed simultaneously when lifting; The moving contact jaw of described unit switch links to each other with one of power output end, unit switch has a pair ofly presses moment contact simultaneously conducting with moving contact jaw conductive contact end in reset button, and the major loop switch that one of conductive contact end and homophase are positioned at the moving contact jaw of unit switch moves contact jaw and contact conducting when the major loop switch is not closed; Another conductive contact end of unit switch links to each other in one of the moving contact jaw of unit switch by out of phase in current-limiting resistance and the power input, follows reset button at the moving contact jaw of unit switch and presses moment and form and intersect the life-span stop detection loop of passing pair induction coils; Silicon controlled negative electrode homophase in diode (V1c) and power output end is positioned at one of the moving contact jaw of unit switch and links to each other, out of phase links to each other in one of the moving contact jaw of unit switch in the input of tripping coil and the power input that passes two induction coils, forms not intersect the tripping coil path that passes pair induction coils.
Embodiment four
With reference to shown in Figure 4, the present embodiment power output end and load end respectively are provided with the pair of conductive contact jaw, the moving contact jaw of major loop switch (KR2-1, KR2-2) is positioned at the below of major loop switches conductive contact jaw, follows the reset button lead closed with the conductive contact end in contact of power output end and load end simultaneously when lifting; The moving contact jaw of described unit switch links to each other with one of power source loads sleeve, unit switch has a pair ofly presses moment contact simultaneously conducting with moving contact jaw conductive contact end in reset button, and the major loop switch that one of conductive contact end and homophase are positioned at the moving contact jaw of unit switch moves contact jaw and contact conducting when the major loop switch is not closed; Another conductive contact end of unit switch links to each other in one of the moving contact jaw of unit switch by out of phase in current-limiting resistance H2 and the power input, follows reset button at the moving contact jaw of unit switch and presses moment and form and intersect the life-span stop detection loop of passing pair induction coils; Silicon controlled negative electrode out of phase in diode V1c and the power input that passes two induction coils links to each other in one of the moving contact jaw of unit switch, homophase is positioned at one of the moving contact jaw of unit switch and links to each other in the input of tripping coil and the power source loads sleeve, forms not intersect the tripping coil path that passes pair induction coils.
Embodiment five
With reference to shown in Figure 5, described power output end and the load end of the present embodiment respectively are provided with the pair of conductive contact jaw, the major loop switch has two pairs of moving contact jaws that cooperate with power output end and load end conductive contact end respectively, moving contact jaw is positioned at the below of major loop switches conductive contact jaw, follows the reset button lead closed with the conductive contact end in contact of power output end and load end simultaneously when lifting; The moving contact jaw of described unit switch links to each other with one of power input that passes two induction coils by a current-limiting resistance, the conductive contact end of unit switch links to each other with the power input of another out of phase, follows reset button at the moving contact jaw of unit switch and presses the life-span stop detection loop that moment formation intersection is passed two induction coils; Out of phase links to each other in one of the moving contact jaw of unit switch in silicon controlled negative electrode and the power input that passes two induction coils, homophase is positioned at one of the moving contact jaw of unit switch and links to each other in the input of tripping coil and the power input that passes two induction coils, forms not intersect the tripping coil path that passes pair induction coils.
Embodiment six
With reference to shown in Figure 6, described power output end and the load end of the present embodiment respectively are provided with the pair of conductive contact jaw, the moving contact jaw of major loop switch (KR2-1, KR2-2) is positioned at the below of major loop switches conductive contact jaw, follows the reset button lead closed with the conductive contact end in contact of power output end and load end simultaneously when lifting; The moving contact jaw of described unit switch links to each other with one of power input that passes two induction coils, the conductive contact end of unit switch links to each other with the power input of another out of phase by a current-limiting resistance, follows reset button at the moving contact jaw of unit switch and presses the life-span stop detection loop that moment formation intersection is passed two induction coils; Homophase is positioned at one of the moving contact jaw of unit switch and links to each other in silicon controlled negative electrode and the power input that passes two induction coils, out of phase links to each other in one of the moving contact jaw of unit switch in the input of tripping coil and the power input that passes two induction coils, forms not intersect the tripping coil path that passes pair induction coils.
Embodiment seven
With reference to shown in Figure 7, power output end and load end LOAD respectively are provided with the pair of conductive contact jaw, the moving contact jaw of major loop switch (KR2-1, KR2-2) is positioned at the top of major loop switches conductive contact jaw, and following the reset button lead, to depress moment simultaneously closed with the conductive contact end in contact of power output end and load end; The moving contact jaw of described unit switch KR-2 links to each other with one of power output end or load sleeve end, the conductive contact end of unit switch links to each other with the power input of another out of phase by a current-limiting resistance, follows reset button at the moving contact jaw of unit switch and presses the life-span stop detection loop that moment formation intersection is passed two induction coils; Silicon controlled negative electrode out of phase in diode (V1C) and power output end or load sleeve end links to each other in one of the moving contact jaw of unit switch, homophase is positioned at one of the moving contact jaw of unit switch and links to each other in the input of tripping coil and the power output end, forms not intersect the tripping coil path that passes pair induction coils.
Embodiment eight
With reference to shown in Figure 8, the power output end of the present embodiment and load end respectively are provided with the pair of conductive contact jaw, the moving contact jaw of major loop switch (KR2-1, KR2-2) is positioned at the top of major loop switches conductive contact jaw, and following the reset button lead, to depress moment simultaneously closed with the conductive contact end in contact of power output end and load end; The moving contact jaw of described unit switch links to each other with one of power output end, the conductive contact end of unit switch links to each other with the power input of another out of phase by a current-limiting resistance, follows reset button at the moving contact jaw of unit switch and presses the life-span stop detection loop that moment formation intersection is passed two induction coils; The silicon controlled negative electrode is positioned at one of the moving contact jaw of unit switch by homophase in a terminal that is suspended in the moving contact jaw of major loop switch below and the power input that passes two induction coils and links to each other when the major loop switch closure, the input of tripping coil links to each other in one of the moving contact jaw of unit switch by out of phase in a terminal that is suspended in the moving contact jaw of major loop switch below and the power input that passes two induction coils, forms not intersect the tripping coil path that passes pair induction coils.
Embodiment nine
With reference to shown in Figure 9, described power output end and the load end of the present embodiment respectively are provided with the pair of conductive contact jaw, the moving contact jaw of major loop switch (KR2-1, KR2-2) is positioned at the top of major loop switches conductive contact jaw, and following the reset button lead, to depress moment simultaneously closed with the conductive contact end in contact of power output end and load end; The moving contact jaw of described unit switch links to each other with one of power output end, the conductive contact end of unit switch links to each other with the power input of another out of phase by a current-limiting resistance, follows reset button at the moving contact jaw of unit switch and presses the life-span stop detection loop that moment formation intersection is passed two induction coils; Out of phase links to each other in one of the moving contact jaw of unit switch in silicon controlled negative electrode and the power input, homophase is positioned at one of the moving contact jaw of unit switch and links to each other in the input of tripping coil and the power input, forms not intersect the tripping coil path that passes pair induction coils.
Embodiment ten
With reference to shown in Figure 10, the present embodiment circuit structure and embodiment nine are basic identical, be that from embodiment nine differences the connection of malfunction indicator lamp is different, the negative electrode of malfunction indicator lamp LED1-R links to each other with the power input of out of phase in the moving contact jaw of unit switch by a resistance R 5, diode V1b, and the anode of malfunction indicator lamp links to each other with the output of tripping coil.
For energy-saving and cost-reducing; this leakage protection circuit with instant fault Presentation Function comprises that also one is used for the timer DSQ of timely checking circuit functional completeness; the power end Vcc of timer DSQ links to each other with the tripping coil output; the output OUT of timer DSQ links to each other with the gate pole of controllable silicon V4, and the earth terminal of timer DSQ links to each other with the earth terminal of control chip.Timer DSQ regularly sends a Continuity signal to the controllable silicon gate pole, if circuit function is intact, and the major loop switch trip, leakage protection circuit is in power down mode,, then can not normally trip the earth leakage protective socket that prompting user more renews if the life-span stops.
For preventing that instantaneous pressure from causing damage to circuit, the moving contact lever of major loop switch (KR2-1, KR2-2) is provided with the metal discharge sheet of a pair of matched in clearance, and the front end of metal discharge sheet has discharge cambered surface or discharge tip.The setting of timer DSQ and discharge sheet is equally applicable to previous embodiment.
Although the present invention illustrates and describes by the reference preferred embodiment,, those of ordinary skills should understand, and can be not limited to the description of above-described embodiment, in the scope of claims, can do the various variations on form and the details.
Claims (16)
1. the leakage protection circuit that has instant fault Presentation Function, comprise power input, power output end, load end, two induction coil (L1 for detection of leakage current and low resistance fault, L2), control chip (IC1), be built-in with the tripping coil (S0L) of iron core, controllable silicon (V4), major loop switch (KR2-1 with the reset button interlock, KR2-2), it is characterized in that: also comprise one with reset button interlock, while is as the open type unit switch (KR-2) of leakage current generating switch and life-span stop detection switch, the moving contact jaw of unit switch is pressed moment and the conducting of conductive contact end in contact in reset button, make tripping coil (SOL) form the simulation leakage current generating loop that intersection is passed two induction coils, the moving contact jaw of unit switch separates with the conductive contact end when reset button drive major loop switch closure resets success; Also be provided with malfunction indicator lamp (LED1-R) circuit, malfunction indicator lamp (LED1-R) circuit is in parallel with the tripping coil two ends, lights when tripping coil is opened a way.
2. the leakage protection circuit with instant fault Presentation Function according to claim 1, it is characterized in that: the moving contact jaw of described unit switch links to each other with one of power output end, unit switch has a pair ofly presses moment contact simultaneously conducting with moving contact jaw conductive contact end in reset button, and the major loop switch that one of conductive contact end and homophase are positioned at the moving contact jaw of unit switch moves contact jaw and contact conducting when the major loop switch is not closed; Another conductive contact end of unit switch links to each other in one of the moving contact jaw of unit switch by out of phase in current-limiting resistance and the power input, follow reset button at the moving contact jaw of unit switch and press the life-span stop detection loop that moment formation intersection is passed two induction coils, this conductive contact end links to each other with the controllable silicon negative electrode through diode (V1c) simultaneously; Out of phase links to each other in one of the moving contact jaw of unit switch in silicon controlled negative electrode and the power input, and the input of tripping coil is positioned at one of the moving contact jaw of unit switch with homophase and links to each other, and formation does not intersect the tripping coil path that passes pair induction coils.
3. the leakage protection circuit with instant fault Presentation Function according to claim 2; it is characterized in that: the moving contact jaw of described major loop switch (KR2-1, KR2-2) is positioned at the below of major loop switches conductive contact jaw; follow reset button lead closure when lifting, one of conductive contact end of described unit switch contacts conducting by a terminal that is suspended in one of major loop switch below with this major loop switches conductive contact jaw when the major loop switch is not closed.
4. the leakage protection circuit with instant fault Presentation Function according to claim 3; it is characterized in that: also comprise a working station indicator (LED1-G); the anode of working station indicator links to each other with power input by a resistance (R5), diode (V2); the negative electrode of working station indicator links to each other with the power end of control chip (IC1), and working station indicator (LED1-G) is also bright through link to each other with one of power input successful time point that resets of diode (V1a), resistance (R1), tripping coil.
5. the leakage protection circuit with instant fault Presentation Function according to claim 1, it is characterized in that: the moving contact jaw of described major loop switch (KR2-1, KR2-2) is positioned at the top of major loop switches conductive contact jaw, depresses closure when reset button is depressed moment and simultaneously closed reduction success of unit switch; The moving contact jaw of described unit switch links to each other with one of power output end, the conductive contact end of unit switch links to each other in one of the moving contact jaw of unit switch by out of phase in a current-limiting resistance (H2) and the power input, follow reset button at the moving contact jaw of unit switch and press the life-span stop detection loop that moment formation intersection is passed two induction coils, unit switch conductive contact end links to each other with the controllable silicon negative electrode through diode (V1c) simultaneously; Out of phase links to each other in another phase power input of the moving contact jaw of unit switch in silicon controlled negative electrode and the power input, another phase power input that the input of tripping coil and homophase are positioned at the moving contact jaw of unit switch links to each other, forms not intersect the tripping coil path that passes pair induction coils.
6. the leakage protection circuit with instant fault Presentation Function according to claim 1, it is characterized in that: described power output end and load end respectively are provided with the pair of conductive contact jaw, the moving contact jaw of major loop switch (KR2-1, KR2-2) is positioned at the below of major loop switches conductive contact jaw, follows the reset button lead and consists of up and down overlap condition of contact with the conductive contact end in contact of power output end and load end is closed simultaneously when lifting; The moving contact jaw of described unit switch links to each other with one of power output end, unit switch has a pair ofly presses moment contact simultaneously conducting with moving contact jaw conductive contact end in reset button, and the major loop switch that one of conductive contact end and homophase are positioned at the moving contact jaw of unit switch moves contact jaw and contact conducting when the major loop switch is not closed; Another conductive contact end of unit switch links to each other in one of the moving contact jaw of unit switch by out of phase in current-limiting resistance and the power input, follows reset button at the moving contact jaw of unit switch and presses moment and form and intersect the life-span stop detection loop of passing pair induction coils; Silicon controlled negative electrode homophase in diode (V1c) and power output end is positioned at one of the moving contact jaw of unit switch and links to each other, out of phase links to each other in one of the moving stiff end of mains switch in the input of tripping coil and the power input that passes two induction coils, forms not intersect the tripping coil path that passes pair induction coils.
7. the leakage protection circuit with instant fault Presentation Function according to claim 1, it is characterized in that: described power output end and load end respectively are provided with the pair of conductive contact jaw, the moving contact jaw of major loop switch (KR2-1, KR2-2) is positioned at the below of major loop switches conductive contact jaw, follows the reset button lead closed with the conductive contact end in contact of power output end and load end simultaneously when lifting; The moving contact jaw of described unit switch links to each other with one of power source loads sleeve, unit switch has a pair ofly presses moment contact simultaneously conducting with moving contact jaw conductive contact end in reset button, and the major loop switch that one of conductive contact end and homophase are positioned at the moving contact jaw of unit switch moves contact jaw and contact conducting when the major loop switch is not closed; Another conductive contact end of unit switch links to each other in one of the moving contact jaw of unit switch by out of phase in a current-limiting resistance (H2) and the power input, follows reset button at the moving contact jaw of unit switch and presses moment and form and intersect the life-span stop detection loop of passing pair induction coils; Silicon controlled negative electrode out of phase in diode (V1c) and the power input that passes two induction coils links to each other in one of the moving contact jaw of unit switch, homophase is positioned at one of the moving contact jaw of unit switch and links to each other in the input of tripping coil and the power source loads sleeve, forms not intersect the tripping coil path that passes pair induction coils.
8. the leakage protection circuit with instant fault Presentation Function according to claim 1, it is characterized in that: described power output end and load end respectively are provided with the pair of conductive contact jaw, the major loop switch has two pairs of moving contact jaws that cooperate with power output end and load end conductive contact end respectively, moving contact jaw is positioned at the below of major loop switches conductive contact jaw, follows the reset button lead closed with the conductive contact end in contact of power output end and load end simultaneously when lifting; The moving contact jaw of described unit switch links to each other with one of power input that passes two induction coils by a current-limiting resistance, the conductive contact end of unit switch links to each other with the power input of another out of phase, follows reset button at the moving contact jaw of unit switch and presses the life-span stop detection loop that moment formation intersection is passed two induction coils; Silicon controlled negative electrode out of phase in diode (V1c) and the power input that passes two induction coils links to each other in one of the moving contact jaw of unit switch, homophase is positioned at one of the moving contact jaw of unit switch and links to each other in the input of tripping coil and the power input that passes two induction coils, forms not intersect the tripping coil path that passes pair induction coils.
9. the leakage protection circuit with instant fault Presentation Function according to claim 8, it is characterized in that: described power output end and load end respectively are provided with the pair of conductive contact jaw, the moving contact jaw of major loop switch (KR2-1, KR2-2) is positioned at the below of major loop switches conductive contact jaw, follows the reset button lead closed with the conductive contact end in contact of power output end and load end simultaneously when lifting; The moving contact jaw of described unit switch links to each other with one of power input that passes two induction coils, the conductive contact end of unit switch links to each other with the power input of another out of phase by a current-limiting resistance, follows reset button at the moving contact jaw of unit switch and presses the life-span stop detection loop that moment formation intersection is passed two induction coils; Silicon controlled negative electrode homophase in diode (V1c) and the power input that passes two induction coils is positioned at one of the moving contact jaw of unit switch and links to each other, out of phase links to each other in one of the moving contact jaw of unit switch in the input of tripping coil and the power input that passes two induction coils, forms not intersect the tripping coil path that passes pair induction coils.
10. the leakage protection circuit with instant fault Presentation Function according to claim 1, it is characterized in that: described power output end and load end respectively are provided with the pair of conductive contact jaw, the moving contact jaw of major loop switch (KR2-1, KR2-2) is positioned at the top of major loop switches conductive contact jaw, and following the reset button lead, to depress moment simultaneously closed with the conductive contact end in contact of power output end and load end; The moving contact jaw of described unit switch links to each other with one of power output end or load sleeve end, the conductive contact end of unit switch links to each other with the power input of another out of phase by a current-limiting resistance, follows reset button at the moving contact jaw of unit switch and presses the life-span stop detection loop that moment formation intersection is passed two induction coils; Silicon controlled negative electrode out of phase in diode (V1c) and power output end or load sleeve end links to each other in the terminal one of the moving contact jaw of unit switch, homophase is positioned at one of the moving contact jaw of unit switch and links to each other in the input of tripping coil and power output end or the load sleeve end, forms not intersect the tripping coil path that passes pair induction coils.
11. the leakage protection circuit with instant fault Presentation Function according to claim 1, it is characterized in that: described power output end and load end respectively are provided with the pair of conductive contact jaw, the moving contact jaw of major loop switch (KR2-1, KR2-2) is positioned at the top of major loop switches conductive contact jaw, and following the reset button lead, to depress moment simultaneously closed with the conductive contact end in contact of power output end and load end; The moving contact jaw of described unit switch links to each other with one of power output end, the conductive contact end of unit switch links to each other with the power input of another out of phase by a current-limiting resistance, follows reset button at the moving contact jaw of unit switch and presses the life-span stop detection loop that moment formation intersection is passed two induction coils; The silicon controlled negative electrode is positioned at one of the moving contact jaw of unit switch by homophase in a terminal that is suspended in the moving contact jaw of major loop switch below and the power input that passes two induction coils and links to each other when the major loop switch closure, the input of tripping coil links to each other in one of the moving contact jaw of unit switch by out of phase in a terminal that is suspended in the moving contact jaw of major loop switch below and the power input that passes two induction coils, forms not intersect the tripping coil path that passes pair induction coils.
12. the leakage protection circuit with instant fault Presentation Function according to claim 1, it is characterized in that: described power output end and load end respectively are provided with the pair of conductive contact jaw, the moving contact jaw of major loop switch (KR2-1, KR2-2) is positioned at the top of major loop switches conductive contact jaw, and following the reset button lead, to depress moment simultaneously closed with the conductive contact end in contact of power output end and load end; The moving contact jaw of described unit switch links to each other with one of power output end, the conductive contact end of unit switch links to each other with the power input of another out of phase by a current-limiting resistance, follows reset button at the moving contact jaw of unit switch and presses the life-span stop detection loop that moment formation intersection is passed two induction coils; Silicon controlled negative electrode out of phase in diode (V1c) and power input links to each other in one of the moving contact jaw of unit switch, homophase is positioned at one of the moving contact jaw of unit switch and links to each other in the input of tripping coil and the power input, forms not intersect the tripping coil path that passes pair induction coils.
13. according to claim 1 to 12 each described leakage protection circuits with instant fault Presentation Function; it is characterized in that: comprise that also one is used for the timer (DSQ) of timely checking circuit functional completeness; the power end (Vcc) of timer (DSQ) links to each other with the tripping coil output; the output (OUT) of timer (DSQ) links to each other with the gate pole of controllable silicon (V4); the earth terminal of timer (DSQ) links to each other with the earth terminal of control chip, also links to each other with the controllable silicon negative electrode.
14. according to claim 1 to 12 each described leakage protection circuits with instant fault Presentation Function; it is characterized in that: the moving contact jaw of described major loop switch (KR2-1, KR2-2) is provided with the metal discharge sheet of a pair of matched in clearance, and the front end of metal discharge sheet has discharge cambered surface or discharge tip.
15. the leakage protection circuit with instant fault Presentation Function according to claim 1; it is characterized in that: quiet conductive contact end one end of described unit switch is suspended in the top of movable contact link; the other end links to each other with power input, and the middle part has the discharge part (35A) that cooperates one group of discharge of formation conductor with another power supply conductivity splaying.
16. the leakage protection circuit with instant fault Presentation Function according to claim 1 is characterized in that: described unit switch conductive contact end (35B) is drawn a terminal with discharge part (35A), and this terminal links to each other with one of power input; Described testing button is linkedly set with a quiet contact conductor, and quiet contact conductor one end (25B) contacts conducting movably with the terminal that unit switch conductive contact end is drawn.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103773411A CN102931633A (en) | 2012-10-05 | 2012-10-05 | Leakage protection circuit with real-time failure display function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103773411A CN102931633A (en) | 2012-10-05 | 2012-10-05 | Leakage protection circuit with real-time failure display function |
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| Publication Number | Publication Date |
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| CN102931633A true CN102931633A (en) | 2013-02-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012103773411A Pending CN102931633A (en) | 2012-10-05 | 2012-10-05 | Leakage protection circuit with real-time failure display function |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201774226U (en) * | 2010-03-29 | 2011-03-23 | 黄华道 | Novel electricity-saving leakage detection protecting circuit |
| CN102306924A (en) * | 2011-09-14 | 2012-01-04 | 黄华道 | Leakage detecting protection circuit capable of periodically automatically detecting function integrity |
| CN102593785A (en) * | 2012-02-13 | 2012-07-18 | 黄德富 | Protective circuit for electric leakage detection |
| US20120187958A1 (en) * | 2011-01-25 | 2012-07-26 | Huadao Huang | Electric leakage detection protective circuit with magnetic lock mechanism |
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- 2012-10-05 CN CN2012103773411A patent/CN102931633A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201774226U (en) * | 2010-03-29 | 2011-03-23 | 黄华道 | Novel electricity-saving leakage detection protecting circuit |
| US20120187958A1 (en) * | 2011-01-25 | 2012-07-26 | Huadao Huang | Electric leakage detection protective circuit with magnetic lock mechanism |
| CN102306924A (en) * | 2011-09-14 | 2012-01-04 | 黄华道 | Leakage detecting protection circuit capable of periodically automatically detecting function integrity |
| CN102593785A (en) * | 2012-02-13 | 2012-07-18 | 黄德富 | Protective circuit for electric leakage detection |
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Application publication date: 20130213 |