CN205195230U - Circuit in earthleakage protective equipment automation - Google Patents
Circuit in earthleakage protective equipment automation Download PDFInfo
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- CN205195230U CN205195230U CN201520954066.4U CN201520954066U CN205195230U CN 205195230 U CN205195230 U CN 205195230U CN 201520954066 U CN201520954066 U CN 201520954066U CN 205195230 U CN205195230 U CN 205195230U
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- leakage protective
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Abstract
The utility model discloses a circuit in earthleakage protective equipment automation, including rectifier circuit, the interlocking device of mechanism and leakage protection circuit, still be equipped with the automatic electric trigger circuit of going up, go up electric coil L1 and silicon controlled rectifier Q2, electric trigger circuit connects silicon controlled rectifier Q2 ignite in the automation, it is used for the interlocking device of actuation mechanism to go up electric coil L1, going up electric coil L1 and silicon controlled rectifier Q2 and carrying out electrical connection, Q2 switches on, goes up the actuation of electric coil L1. Realize with less component that the single triggers, save the private circuit, reduce cost and volume, electric actuation technique key is that autotrigger and secondary artificially trigger passively in the automation, and this function realizes extensible to multipurpose application field, and it is the equivalent switch to go up electric actuation, has replaced big power relay control mode and secondary to trigger passively and can realize that singlechip extension application has realized intelligent combination control mode.
Description
Technical field
The utility model relates to earth leakage protective device technical field, particularly the automatic electrification circuit of a kind of earth leakage protective device.
Background technology
Single-phase silicon-controlledly to be used in direct current once will there be maintenance conducting function after triggering, if being used in after triggering in alternating current caused controllable silicon to automatically shut down because controllable silicon anode has exist null cycle, to use in alternating current-direct current Hybrid mode circuit to allow controllable silicon and under the prerequisite of not power-off, realize conducting or cut-off and the angle of flow is controlled, dedicated trigger circuit must be had, due to special circuit cost high and need outward element assist, cause wiring board volume large, installing space is restricted often, not easily Miniaturization Design.
Utility model content
(1) technical problem that will solve
The purpose of this utility model will overcome above-mentioned shortcoming exactly, aims to provide the automatic electrification circuit of a kind of earth leakage protective device.
(2) technical scheme
For achieving the above object, the automatic electrification circuit of earth leakage protective device of the present utility model, comprises rectification circuit, mechanism's interlock and leakage protection circuit, is also provided with the circuits for triggering that automatically power on, upper electric coil L1 and controllable silicon Q2; The described circuits for triggering that automatically power on connect controllable silicon Q2 trigger electrode, and described upper electric coil L1 is used for adhesive mechanism interlock; Upper electric coil L1 and controllable silicon Q2 is electrically connected, Q2 conducting, upper electric coil L1 adhesive.
The described circuits for triggering that automatically power on comprise storage capacitor C1, triode Q1, electric capacity C2 and resistance R3; Described resistance R3 one end connects storage capacitor C1 positive pole, and the other end connects electric capacity C2, and described triode Q1 base stage is controlled by electric capacity C2; Described triode Q1 collector electrode connects one end of electric capacity C3, and the described electric capacity C3 other end and controllable silicon Q2 trigger electrode are electrically connected.
Also comprise secondary switching circuit, described secondary switching circuit is the loop that reset key S1, diode D2 and described electric capacity C2 are formed.
Resistance R2 is provided with between described storage capacitor C1 and triode Q1 collector electrode; Described controllable silicon Q2 trigger electrode is connected with electric capacity C4 and resistance R5.
Between the electric capacity C3 other end and controllable silicon Q2 trigger electrode, voltage stabilizing didoe D7 is set.
Described resistance R2, electric capacity C3, voltage stabilizing didoe D7, resistance R5 and electric capacity C4 form delay control circuit.
The delay time of described delay control circuit is adjustable.
Described leakage protection circuit comprises the zero sequence current mutual inductor for responding to zero live wire electric leakage, and for responding to the ground wire instrument transformer of ground wire electric leakage, and earth leakage protective IC; Earth leakage protective IC is for receiving the induced potential of zero sequence current mutual inductor and ground wire instrument transformer.
Described voltage stabilizing didoe D7 dropping resistor replaces.
The controllable silicon Q3 also comprising power-off coil L2 and be electrically connected with power-off coil L2, described power-off coil L2 are used for release mechanism interlock, and described controllable silicon Q3 trigger electrode is controlled by earth leakage protective IC.
(3) beneficial effect
Compared with prior art, the technical solution of the utility model has the following advantages: realize single with less element and trigger, save special circuit, reduce cost and volume; Automatically the adhesive key problem in technology that powers on automatically triggers and the artificial passive triggering of secondary, this functional realiey may extend into multipurpose and uses field, power on adhesive and equivalent switch, instead of high power relay control mode and the passive triggering of secondary can realize single-chip microcomputer extension uses and achieve intelligent combination control model.
Accompanying drawing explanation
Fig. 1 is the module map of the automatic electrification circuit of earth leakage protective device of the present utility model;
Fig. 2 is the circuit theory diagrams of the embodiment one of the automatic electrification circuit of earth leakage protective device of the present utility model;
Fig. 3 is the circuit theory diagrams of the embodiment two of the automatic electrification circuit of earth leakage protective device of the present utility model;
Fig. 4 is the circuit theory diagrams that in the utility model Fig. 2, dropping resistor substitutes voltage stabilizing didoe;
Fig. 5 is the circuit theory diagrams that in the utility model Fig. 3, dropping resistor substitutes voltage stabilizing didoe.
Embodiment
Below in conjunction with drawings and Examples, embodiment of the present utility model is described in further detail.Following examples for illustration of the utility model, but are not used for limiting scope of the present utility model.
Embodiment one
Circuit module figure as shown in Figure 1, the automatic electrification circuit of earth leakage protective device of the present utility model, comprise rectification circuit, mechanism interlock S2-S3 and leakage protection circuit, rectification circuit comprises current-limiting resistance R1 and rectifier diode D1, is also provided with the circuits for triggering that automatically power on, upper electric coil L1 and controllable silicon Q2; The described circuits for triggering that automatically power on connect controllable silicon Q2 trigger electrode, and described upper electric coil L1 is used for adhesive mechanism interlock S2-S3; Upper electric coil L1 and controllable silicon Q2 is electrically connected, Q2 conducting, upper electric coil L1 adhesive.
As shown in Figure 2, the described circuits for triggering that automatically power on comprise storage capacitor C1, triode Q1, electric capacity C2 and resistance R3 to circuit theory diagrams; Described resistance R3 one end connects storage capacitor C1 positive pole, and the other end connects electric capacity C2, and described triode Q1 base stage is controlled by electric capacity C2; Described triode Q1 collector electrode connects one end of electric capacity C3, and the described electric capacity C3 other end and controllable silicon Q2 trigger electrode are electrically connected.Wherein, storage capacitor C1 is parallel with voltage stabilizing didoe D6.
In the present embodiment, in order to ensure the stability of subsequent voltage, between the electric capacity C3 other end and controllable silicon Q2 trigger electrode, voltage stabilizing didoe D7 is set.
Also comprise secondary switching circuit, described secondary switching circuit is the loop that reset key S1, diode D2 and described electric capacity C2 are formed.
Resistance R2 is provided with between described storage capacitor C1 and triode Q1 collector electrode; Described controllable silicon Q2 trigger electrode is connected with electric capacity C4 and resistance R5.
Described resistance R2, electric capacity C3, voltage stabilizing didoe D7, resistance R5 and electric capacity C4 form delay control circuit.Voltage stabilizing didoe D7 can ensure the accuracy of delay time.
As shown in Figure 4,5, described voltage stabilizing didoe D7 dropping resistor RV1 replaces.
The delay time of described delay control circuit is adjustable.
Described leakage protection circuit comprises the zero sequence current mutual inductor ZCT1 for responding to zero live wire electric leakage, and for responding to the ground wire instrument transformer ZCT2 of ground wire electric leakage, and earth leakage protective IC; Earth leakage protective IC is for receiving the induced potential of zero sequence current mutual inductor ZCT1 and ground wire instrument transformer ZCT2.
The controllable silicon Q3 also comprising power-off coil L2 and be electrically connected with power-off coil L2, described power-off coil L2 are used for release mechanism interlock S2-S3, and described controllable silicon Q3 trigger electrode is controlled by earth leakage protective IC.
Embodiment two
As shown in Figure 3, increase anti-interference capacitor, improve the interference free performance of earth leakage protective device at resistance R3 two ends, diode D2 can substitute with resistance R6.
Utility model works principle is as follows
Automatically upper Electricity Functional
Switch on power, supply voltage through R1 current limliting, D1 rectification, C1 filtering, after D6 voltage stabilizing, through R3, C2 makes Q1 saturation conduction, completes delayed and makes complete machine be in stable state, after C2 voltage is full of, supply voltage is through R2, C3, D7 make Q2 controlled silicon conducting 20 ~ 30mS (time is adjustable), now go up electric coil L1 adhesive 1 time, the synchronous adhesive of adhesive driving mechanical interlock S2-S3 of upper electric coil L1 self-locking, load continuous is powered output; When load zero sequence current mutual inductor ZCT1 or ground wire instrument transformer ZCT2 has leakage current, earth leakage protective IC protective circuit drives controllable silicon Q3 conducting, and power-off coil L2 adhesive, makes load switch S2, S3 synchronous release, thus achieve leakage tripping defencive function;
Electricity Functional on secondary
For off-position, press reset key S1, C2 terminal voltage forms short-circuit loop release through S1, D2, after unclamping S1, namely get back to the trigger mode that automatically powers on, and load obtains electricity and exports.
This circuit has following features
1, switch on power and automatically power on and maintain mechanical self-latching load supplying state;
Load auto-breaking and maintain mechanical self-latching state when 2, producing electric leakage or test button by K1;
3, protective circuit is connected to mechanism interlock S2-S3 output switching terminal, and under mechanism interlock S2-S3 off-state, load circuit element is without the need to consuming electric energy;
4, the release of S1 reset switch effectively, can realize each triggered time to guarantee unanimously;
5, for guaranteeing that low-voltage does not allow work, adjust R2 in circuit, R3 divider resistance scale parameter can realize low-voltage not flop phenomenon, protects controller and the electricity consumption of electricity consumption payload security.
The utility model realizes single with less element and triggers, and saves special circuit, reduces cost and volume; Automatically the adhesive key problem in technology that powers on automatically triggers and the artificial passive triggering of secondary, this functional realiey may extend into multipurpose and uses field, power on adhesive and equivalent switch, instead of high power relay control mode and the passive triggering of secondary can realize single-chip microcomputer extension uses and achieve intelligent combination control model.
In sum, above-mentioned execution mode is not restricted execution mode of the present utility model, and the modification that all those skilled in the art carry out on the basis of flesh and blood of the present utility model or equivalent deformation, all at technology category of the present utility model.
Claims (10)
1. the automatic electrification circuit of earth leakage protective device, comprises rectification circuit, mechanism's interlock and leakage protection circuit, it is characterized in that: be also provided with the circuits for triggering that automatically power on, upper electric coil L1 and controllable silicon Q2; The described circuits for triggering that automatically power on connect controllable silicon Q2 trigger electrode, and described upper electric coil L1 is used for adhesive mechanism interlock; Upper electric coil L1 and controllable silicon Q2 is electrically connected.
2. the automatic electrification circuit of earth leakage protective device as claimed in claim 1, is characterized in that: the described circuits for triggering that automatically power on comprise storage capacitor C1, triode Q1, electric capacity C2 and resistance R3; Described resistance R3 one end connects storage capacitor C1 positive pole, and the other end connects electric capacity C2, and described triode Q1 base stage is controlled by electric capacity C2; Described triode Q1 collector electrode connects one end of electric capacity C3, and the trigger electrode of the described electric capacity C3 other end and controllable silicon Q2 is electrically connected.
3. the automatic electrification circuit of earth leakage protective device as claimed in claim 2, is characterized in that: also comprise secondary switching circuit, and described secondary switching circuit is the loop that reset key S1, diode D2 and described electric capacity C2 are formed.
4. the automatic electrification circuit of earth leakage protective device as claimed in claim 2, is characterized in that: be provided with resistance R2 between described storage capacitor C1 and triode Q1 collector electrode; Described controllable silicon Q2 trigger electrode is connected with electric capacity C4 and resistance R5.
5. the automatic electrification circuit of earth leakage protective device as claimed in claim 2, is characterized in that: arrange voltage stabilizing didoe D7 between the described electric capacity C3 other end and controllable silicon Q2 trigger electrode.
6. the automatic electrification circuit of earth leakage protective device as claimed in claim 5, is characterized in that: described resistance R2, electric capacity C3, voltage stabilizing didoe D7, resistance R5 and electric capacity C4 form delay control circuit.
7. the automatic electrification circuit of earth leakage protective device as claimed in claim 6, is characterized in that: the delay time of described delay control circuit is adjustable.
8. the automatic electrification circuit of earth leakage protective device as claimed in claim 6, it is characterized in that: described leakage protection circuit comprises the zero sequence current mutual inductor for responding to zero live wire electric leakage, and for responding to the ground wire instrument transformer of ground wire electric leakage, and earth leakage protective IC; Earth leakage protective IC is for receiving the induced potential of zero sequence current mutual inductor and ground wire instrument transformer.
9. the automatic electrification circuit of earth leakage protective device as claimed in claim 6, is characterized in that: described voltage stabilizing didoe D7 dropping resistor replaces.
10. the automatic electrification circuit of earth leakage protective device as claimed in claim 8; it is characterized in that: the controllable silicon Q3 also comprising power-off coil L2 and be electrically connected with power-off coil L2; described power-off coil L2 is used for release mechanism interlock, and described controllable silicon Q3 trigger electrode is controlled by earth leakage protective IC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520954066.4U CN205195230U (en) | 2015-11-26 | 2015-11-26 | Circuit in earthleakage protective equipment automation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520954066.4U CN205195230U (en) | 2015-11-26 | 2015-11-26 | Circuit in earthleakage protective equipment automation |
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| CN205195230U true CN205195230U (en) | 2016-04-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520954066.4U Active CN205195230U (en) | 2015-11-26 | 2015-11-26 | Circuit in earthleakage protective equipment automation |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105356409A (en) * | 2015-11-26 | 2016-02-24 | 余姚市嘉荣电子电器有限公司 | Automatic electrifying circuit for earth leakage protection apparatus |
| CN108011351A (en) * | 2016-12-20 | 2018-05-08 | 芜湖美的厨卫电器制造有限公司 | The protective device and electric heater of power cord |
| CN109217236A (en) * | 2017-06-29 | 2019-01-15 | 芜湖美的厨卫电器制造有限公司 | Gas heater and its protective device |
-
2015
- 2015-11-26 CN CN201520954066.4U patent/CN205195230U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105356409A (en) * | 2015-11-26 | 2016-02-24 | 余姚市嘉荣电子电器有限公司 | Automatic electrifying circuit for earth leakage protection apparatus |
| CN105356409B (en) * | 2015-11-26 | 2018-09-14 | 余姚市嘉荣电子电器有限公司 | The automatic electrification circuit of earth leakage protective device |
| CN108011351A (en) * | 2016-12-20 | 2018-05-08 | 芜湖美的厨卫电器制造有限公司 | The protective device and electric heater of power cord |
| CN109217236A (en) * | 2017-06-29 | 2019-01-15 | 芜湖美的厨卫电器制造有限公司 | Gas heater and its protective device |
| CN109217235A (en) * | 2017-06-29 | 2019-01-15 | 芜湖美的厨卫电器制造有限公司 | Gas heater and its protective device |
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