CN209805410U - High-reliability residual current protection device control circuit - Google Patents
High-reliability residual current protection device control circuit Download PDFInfo
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- CN209805410U CN209805410U CN201920377291.4U CN201920377291U CN209805410U CN 209805410 U CN209805410 U CN 209805410U CN 201920377291 U CN201920377291 U CN 201920377291U CN 209805410 U CN209805410 U CN 209805410U
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Abstract
the utility model provides a highly reliable residual current protection device control circuit, which comprises a release, an electronic trip circuit, an electromagnetic trip circuit, a control circuit, a diode D1 and a capacitor C1; the electronic tripping circuit is connected with the tripper through a diode D1, the electromagnetic tripping circuit is connected with the tripper through a capacitor C1, the electronic tripping circuit is connected with the electromagnetic tripping circuit through a diode D1 and a capacitor C1, a switch K1 capable of controlling the disconnection or short circuit of the electromagnetic tripping circuit is connected between the tripper and the electromagnetic tripping circuit, the control circuit is connected with a switch K1 and the electronic tripping circuit, and the control circuit controls the disconnection or short circuit of the switch K1 by detecting the working voltage of the electronic tripping circuit.
Description
Technical Field
The utility model relates to a circuit breaker control circuit technical field, concretely relates to high reliable residual current protection device control circuit.
background
The earth leakage circuit breakers on the market are mainly classified into residual current circuit breakers related to the power supply voltage (also referred to as electronic type) and residual current circuit breakers unrelated to the power supply voltage (also referred to as electromagnetic type).
In the residual current circuit breaker irrelevant to the power supply voltage, a signal induced by the mutual inductor is a leakage signal and is also taken as the driving energy of the tripper, leakage protection can be realized without a power supply, the safety is high, but the surge current resistance is poor, the function is single, and only AC type and A type leakage protection can be realized.
the residual current circuit breaker related to the power supply voltage uses an electronic circuit board, not only can realize AC type and A type leakage protection, but also can realize B type leakage protection, but the protection function fails under the condition that only one live wire is used.
SUMMERY OF THE UTILITY MODEL
To the problem pointed out in the background art, the utility model provides a high reliable residual current protection device control circuit, through diode D1's reverse isolation and electric capacity C1's the effect of stopping direct make electronic trip circuit signal and electromagnetic trip signal can not mutual interference on the action tripper, realized dual input, single drive's circuit, realized with the residual current operated circuit breaker that mains voltage is relevant and with the effectual combination of the residual current operated circuit breaker that mains voltage is irrelevant together. Simultaneously, in order to solve the poor problem of the anti surge current capability of electromagnetic type residual current circuit breaker, improve the high reliable requirement behind the combination, the utility model discloses monitor the mains voltage of circuit, electronic tripping circuit work when realizing that mains voltage is higher than the setting value shields electromagnetic tripping circuit signal, when only a live wire, unties the shielding to electromagnetic circuit automatically, realizes under the low-voltage product protect function in addition.
The technical scheme of the utility model is realized like this:
A high-reliability residual current protection device control circuit comprises a release, an electronic trip circuit, an electromagnetic trip circuit, a diode D1 and a capacitor C1; the electronic tripping circuit is connected with the tripper through a diode D1, the electromagnetic tripping circuit is connected with the tripper through a capacitor C1, and the electronic tripping circuit is connected with the electromagnetic tripping circuit through a diode D1 and a capacitor C1.
The utility model discloses still further set up to, still include control circuit and switch K1, be connected with the switch K1 of steerable electromagnetism trip circuit disconnection or short circuit between release and the electromagnetism trip circuit, control circuit and switch K1 and electron trip circuit connection, control circuit comes control switch K1's disconnection or short circuit through the operating voltage who detects electron trip circuit.
the utility model discloses still further set up as, control circuit include resistance R2, resistance R3, voltage detector Q2, resistance R4, resistance R5;
One end of the resistor R2 is respectively connected with the power circuit and the electronic trip circuit, and the other end of the resistor R2 is respectively connected with one end of the resistor R3 and the voltage detector Q2;
The other end of the resistor R3 is respectively connected with a power supply circuit, a voltage detector Q2, one end of a resistor R5, an emitter of a switch K1, a release and an electronic release circuit;
the voltage detector Q2 is connected with one end of the resistor R4, the power circuit, one end of the resistor R5, the emitter of the switch K1, the tripper and the electronic tripping circuit;
The other end of the resistor R4 is connected with the other end of the resistor R5 and the base of the switch K1;
One end of the resistor R5 is connected with the base of the switch K1, and the other end of the resistor R5 is connected with the power circuit, the emitter of the switch K1, the release and the electronic release circuit;
The collector of the switch K1 is connected with the electromagnetic trip circuit and the capacitor C1, and the emitter of the switch K1 is connected with the power circuit, the trip and the electronic trip circuit.
the utility model is further provided with a high voltage detection control circuit which is connected between the power circuit and the control circuit;
the high-voltage detection control circuit comprises a triode Q1, a resistor R1 and a voltage regulator tube Z1, wherein the base electrode of the triode Q1 is connected with one end of the resistor R1, the other end of the resistor R1 is connected with one end of a voltage regulator tube Z1, the other end of the voltage regulator tube Z1 is respectively connected with a power circuit, a control circuit, an emitting electrode of a switch K1, a release and an electronic tripping circuit, the collecting electrode of a triode Q1 is connected with the control circuit and the electronic tripping circuit, and the emitting electrode of the triode Q1 is connected with the power circuit.
the utility model discloses still further set up to, still include high voltage detection control circuit, high voltage detection control circuit include triode Q1, resistance R1, stabilivolt Z1, triode Q1's base is connected with resistance R1's one end, resistance R1's the other end is connected with stabilivolt Z1's one end, stabilivolt Z1's the other end respectively with power supply circuit, control circuit connects, switch K1's projecting pole, the release, electron dropout circuit connects, triode Q1's projecting pole and resistance R2's one end, power supply circuit connects, triode Q1's collecting electrode and electron dropout circuit connect.
The utility model discloses still further set up to, switch K1 is triode or field effect transistor or relay.
By adopting the technical scheme, the beneficial effects of the utility model are that:
The utility model provides a high reliable residual current protection device control circuit, electronic type drive signal makes electronic trip circuit signal and electromagnetism trip signal can not the effect of mutual interference on the release through the reverse isolation of diode D1 and the DC blocking of electric capacity C1, has realized dual input, and single driven circuit has realized effectively combining together with the residual current operated circuit breaker that mains voltage is relevant and the residual current operated circuit breaker that mains voltage is irrelevant;
The power supply voltage of the circuit is further monitored, so that the electronic circuit works when the power supply voltage is higher than a set value, electromagnetic trip circuit signals are shielded, when only one live wire is available, the shielding of the electromagnetic circuit is automatically released, and the product has a protection function under no voltage.
drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a circuit diagram of the present invention;
FIG. 2 is a circuit diagram of the present invention;
Fig. 3 is a schematic diagram of the delay time in the present invention;
Fig. 4 is a circuit diagram of the present invention;
fig. 5 is a circuit diagram of the present invention;
fig. 6 is a circuit diagram of the present invention;
fig. 7 is a circuit diagram of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
the present invention is described below with reference to fig. 1-7:
A high-reliability residual current protection device control circuit comprises a release, an electronic trip circuit, an electromagnetic trip circuit, a diode D1 and a capacitor C1; the electronic tripping circuit is connected with the tripper through a diode D1, the electromagnetic tripping circuit is connected with the tripper through a capacitor C1, and the electronic tripping circuit is connected with the electromagnetic tripping circuit through a diode D1 and a capacitor C1.
the electronic tripping driving signal enables an electronic tripping circuit signal and an electromagnetic tripping signal to act on the tripper without mutual interference through the reverse isolation action of the diode D1 and the blocking action of the capacitor C1, so that a double-input single-drive circuit is realized, and the effective combination of a residual current operated circuit breaker related to the power supply voltage and a residual current operated circuit breaker unrelated to the power supply voltage is realized.
when the electronic trip circuit detects a leakage signal and outputs a direct current signal through the diode D1 to drive the trip, the capacitor C1 plays a role in blocking the direct current, so that the output electronic trip signal cannot be interfered by the electromagnetic trip circuit.
When the electromagnetic tripping circuit detects a leakage signal and outputs an alternating current signal to drive the tripper through the capacitor C1, the diode D1 is cut off in the reverse direction, so that the output electromagnetic tripping signal cannot be interfered by the electronic tripping circuit.
the electronic trip circuit protection device further comprises a control circuit and a switch K1, wherein a switch K1 capable of controlling the electromagnetic trip circuit to be disconnected or short-circuited is connected between the trip device and the electromagnetic trip circuit, the control circuit is connected with the switch K1 and the electronic trip circuit, and the control circuit controls the switch K1 to be disconnected or short-circuited by detecting the working voltage of the electronic trip circuit.
In order to solve the poor problem of electromagnetic type residual current circuit breaker anti-current flow ability, improve the high reliable requirement after the combination, the utility model discloses further provide and be connected with the switch K1 that can shield electromagnetic trip circuit between release and the electromagnetic trip circuit, switch K1 is by control circuit control.
The control circuit comprises a resistor R2, a resistor R3, a voltage detector Q2, a resistor R4 and a resistor R5.
One end of the resistor R2 is connected to the power supply circuit and the electronic trip circuit, respectively, and the other end of the resistor R2 is connected to one end of the resistor R3 and the voltage detector Q2, respectively.
The other end of the resistor R3 is connected to the power supply circuit, the voltage detector Q2, one end of the resistor R5, the emitter of the switch K1, the trip, and the electronic trip circuit, respectively.
the voltage detector Q2 is connected to one end of the resistor R4, the power supply circuit, one end of the resistor R5, the emitter of the switch K1, the trip, and the electronic trip circuit.
The other end of the resistor R4 is connected with the other end of the resistor R5 and the base of the switch K1.
One end of the resistor R5 is connected with the base of the switch K1, and the other end of the resistor R5 is connected with the power circuit, the emitter of the switch K1, the release and the electronic release circuit.
The collector of the switch K1 is connected with the electromagnetic trip circuit and the capacitor C1, and the emitter of the switch K1 is connected with the power circuit, the trip and the electronic trip circuit.
the resistor R2 and the resistor R3 in the control circuit divide the power supply voltage of the electronic trip circuit and then detect the voltage by the voltage detector Q2.
When the power supply voltage of the electronic tripping circuit is higher than a set value V2, the control circuit outputs a control signal after T2 time delay, and the control switch K1 is in short circuit or breaks the electromagnetic tripping circuit to shield the electromagnetic tripping circuit signal.
When only one live wire is available, the power supply of the electronic tripping circuit does not work, the power supply voltage is lower than the set value voltage V1, the control circuit outputs a control signal, the control switch K1 cancels the shielding electromagnetic tripping circuit, and the electromagnetic tripping circuit works normally.
in design, the voltage V1 and the voltage V2 may be equal or unequal.
The power supply circuit also comprises a high-voltage detection control circuit, and the high-voltage detection control circuit is connected between the power supply circuit and the control circuit.
The high-voltage detection control circuit comprises a triode Q1, a resistor R1 and a voltage regulator tube Z1, wherein the base electrode of the triode Q1 is connected with one end of the resistor R1, the other end of the resistor R1 is connected with one end of a voltage regulator tube Z1, the other end of the voltage regulator tube Z1 is respectively connected with a power circuit, a control circuit, an emitting electrode of a switch K1, a release and an electronic tripping circuit, the collecting electrode of a triode Q1 is connected with the control circuit and the electronic tripping circuit, and the emitting electrode of the triode Q1 is connected with the power circuit.
The high-voltage detection circuit comprises a triode Q1, a resistor R1 and a voltage regulator tube Z1, wherein the base electrode of the triode Q1 is connected with one end of the resistor R1, the other end of the resistor R1 is connected with one end of the voltage regulator tube Z1, the other end of the voltage regulator tube Z1 is respectively connected with a power circuit and a control circuit, the emitter electrode of a switch K1, a release and an electronic tripping circuit, the emitter electrode of a triode Q1 is connected with one end of the resistor R2 and the power circuit, and the collector electrode of the triode Q1 is connected with the electronic tripping circuit. Wherein, the switch K1 is a triode, a field effect transistor or a relay.
when the output voltage Vcc of the power supply circuit after passing through the power supply conversion circuit is greater than a set value and is also greater than a voltage regulator tube Z1, the triode Q1 is conducted, and the electronic trip circuit is electrified to start working. Meanwhile, the voltage detector Q2 samples the voltage V + through the resistor R2 and the resistor R3, and if the voltage V + is greater than a set value, the voltage detector Q2 outputs a signal, the switch K1 is turned on, a leakage signal provided by the electromagnetic trip circuit is turned off, and the leakage signal provided by the electromagnetic trip circuit cannot drive the trip.
When only one live wire is needed, the power supply conversion circuit cannot work, the voltage Vcc is 0V and is smaller than a voltage regulator tube Z1, the triode Q1 is not conducted, the voltage V + is also 0V and is smaller than the working voltage of the electronic tripping circuit, the electronic tripping circuit stops working, the leakage signal of the electronic tripping circuit cannot play a role of protection, meanwhile, the voltage V + is smaller than a sampling voltage point set by the voltage detector Q2, the voltage detector Q2 has no output signal, the switch K1 is not conducted, the electromagnetic tripping circuit is unlocked, and the leakage signal of the electromagnetic circuit provides leakage protection.
The above description is only for the preferred embodiment of the present invention and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. the utility model provides a high reliable residual current protection device control circuit which characterized in that: the device comprises a release, an electronic trip circuit, an electromagnetic trip circuit, a diode D1 and a capacitor C1; the electronic tripping circuit is connected with the tripper through a diode D1, the electromagnetic tripping circuit is connected with the tripper through a capacitor C1, and the electronic tripping circuit is connected with the electromagnetic tripping circuit through a diode D1 and a capacitor C1.
2. A highly reliable residual current protection device control circuit according to claim 1, characterized in that: the electronic trip circuit protection device further comprises a control circuit and a switch K1, wherein a switch K1 capable of controlling the electromagnetic trip circuit to be disconnected or short-circuited is connected between the trip device and the electromagnetic trip circuit, the control circuit is connected with the switch K1 and the electronic trip circuit, and the control circuit controls the switch K1 to be disconnected or short-circuited by detecting the working voltage of the electronic trip circuit.
3. A highly reliable residual current protection device control circuit according to claim 2, characterized in that: the control circuit comprises a resistor R2, a resistor R3, a voltage detector Q2, a resistor R4 and a resistor R5;
One end of the resistor R2 is respectively connected with the power circuit and the electronic trip circuit, and the other end of the resistor R2 is respectively connected with one end of the resistor R3 and the voltage detector Q2;
The other end of the resistor R3 is respectively connected with a power supply circuit, a voltage detector Q2, one end of a resistor R5, an emitter of a switch K1, a release and an electronic release circuit;
The voltage detector Q2 is connected with one end of the resistor R4, the power circuit, one end of the resistor R5, the emitter of the switch K1, the tripper and the electronic tripping circuit;
The other end of the resistor R4 is connected with the other end of the resistor R5 and the base of the switch K1;
One end of the resistor R5 is connected with the base of the switch K1, and the other end of the resistor R5 is connected with the power circuit, the emitter of the switch K1, the release and the electronic release circuit;
The collector of the switch K1 is connected with the electromagnetic trip circuit and the capacitor C1, and the emitter of the switch K1 is connected with the power circuit, the trip and the electronic trip circuit.
4. A highly reliable residual current protection device control circuit according to claim 3, characterized in that: the high-voltage detection control circuit is connected between the power supply circuit and the control circuit;
the high-voltage detection control circuit comprises a triode Q1, a resistor R1 and a voltage regulator tube Z1, wherein the base electrode of the triode Q1 is connected with one end of the resistor R1, the other end of the resistor R1 is connected with one end of a voltage regulator tube Z1, the other end of the voltage regulator tube Z1 is respectively connected with a power circuit, a control circuit, an emitting electrode of a switch K1, a release and an electronic tripping circuit, the collecting electrode of a triode Q1 is connected with the control circuit and the electronic tripping circuit, and the emitting electrode of the triode Q1 is connected with the power circuit.
5. A highly reliable residual current protection device control circuit according to claim 3, characterized in that: the high-voltage detection circuit comprises a triode Q1, a resistor R1 and a voltage regulator tube Z1, wherein the base electrode of the triode Q1 is connected with one end of the resistor R1, the other end of the resistor R1 is connected with one end of a voltage regulator tube Z1, the other end of the voltage regulator tube Z1 is respectively connected with a power circuit, a control circuit, an emitter of a switch K1, a release and an electronic tripping circuit, the emitter of a triode Q1 is connected with one end of the resistor R2 and the power circuit, and the collector of the triode Q1 is connected with the electronic tripping circuit.
6. A highly reliable residual current protection device control circuit according to claim 4 or 5, characterized in that: the switch K1 is a triode or a field effect transistor or a relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920377291.4U CN209805410U (en) | 2019-03-23 | 2019-03-23 | High-reliability residual current protection device control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920377291.4U CN209805410U (en) | 2019-03-23 | 2019-03-23 | High-reliability residual current protection device control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209805410U true CN209805410U (en) | 2019-12-17 |
Family
ID=68826122
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920377291.4U Active CN209805410U (en) | 2019-03-23 | 2019-03-23 | High-reliability residual current protection device control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209805410U (en) |
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2019
- 2019-03-23 CN CN201920377291.4U patent/CN209805410U/en active Active
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