CN106816858A - Time lagged type residual current circuit breaker circuit - Google Patents
Time lagged type residual current circuit breaker circuit Download PDFInfo
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- CN106816858A CN106816858A CN201510872608.8A CN201510872608A CN106816858A CN 106816858 A CN106816858 A CN 106816858A CN 201510872608 A CN201510872608 A CN 201510872608A CN 106816858 A CN106816858 A CN 106816858A
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- 238000001914 filtration Methods 0.000 claims abstract description 58
- 238000001514 detection method Methods 0.000 claims abstract description 22
- 238000002474 experimental method Methods 0.000 claims description 9
- 230000005611 electricity Effects 0.000 claims description 7
- 239000003381 stabilizer Substances 0.000 claims description 6
- 238000004088 simulation Methods 0.000 claims description 2
- 230000006641 stabilisation Effects 0.000 abstract description 5
- 238000011105 stabilization Methods 0.000 abstract description 5
- 238000007600 charging Methods 0.000 description 9
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 5
- 229910052710 silicon Inorganic materials 0.000 description 5
- 239000010703 silicon Substances 0.000 description 5
- 230000003750 conditioning effect Effects 0.000 description 2
- 238000010277 constant-current charging Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
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- 230000000087 stabilizing effect Effects 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
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Abstract
A kind of time lagged type residual current circuit breaker circuit, including residual current collecting unit, rectification filtering unit, constant-current charge unit, voltage detection unit and execution unit；The current acquisition unit exports to rectification filtering unit the induced-current of generation；The rectification filtering unit receives the AC signal of current acquisition unit output, is exported to constant-current charge unit after rectification is carried out to it；The constant-current charge unit includes electric capacity C7, and when circuit produces residual current, constant-current charge unit carries out constant-current charge to electric capacity C7；The voltage of the voltage detection unit detection electric capacity C7, when C7 voltages are more than trigger voltage, drives execution unit work.Time lagged type residual current circuit breaker circuit of the invention, uses the mode of constant-current charge to be charged for electric capacity, the deferred action performance with stabilization.
Description
Technical field
The invention belongs to Low Voltage Electrical Apparatus, it is related to a kind of time lagged type residual current circuit breaker circuit.
Background technology
Time lagged type residual current action breaker is on the basis of plain edition residual current action breaker, to increase
The functional characteristic of deferred action is added, can be prevented effectively from because external circuit or breaker being interfered and producing
Misoperation.In existing product, the purpose of deferred action is reached using RC charging circuits more.However, passing through RC
Charging circuit realizes time delay, because the size and angle of flow of residual current have to the time-delay action of product
There is certain influence, the delay performance of breaker is unstable.
The content of the invention
It is an object of the invention to overcome existing product delay performance in the case of different current leakages unstable
Technological deficiency, there is provided a kind of simple structure, reliability are high, be capable of achieving stabilization delay performance time lagged type
Residual current circuit breaker circuit.
To achieve the above object, present invention employs following technical scheme：
A kind of time lagged type residual current circuit breaker circuit, including residual current collecting unit 1, rectification filtering unit
2nd, constant-current charge unit 3, voltage detection unit 4 and execution unit 5；The current acquisition unit 1 will be produced
Raw induced-current is exported to rectification filtering unit 2；The rectification filtering unit 2 receives current acquisition unit 1
The AC signal of output, exports to constant-current charge unit 3 after rectification is carried out to it；The constant-current charge unit 3
Including electric capacity C7, when circuit produces residual current, constant-current charge unit 3 carries out constant-current charge to electric capacity C7；
The voltage of the detection electric capacity of the voltage detection unit 4 C7, when C7 voltages are more than trigger voltage, driving is held
Row unit 5 works.
Preferably, the constant-current charge unit 3 also includes by triode Q1 and in the same direction by multiple diodes
The first end of the diode group VD2, the diode group VD2 that are in series and the emitter stage of triode Q1 connect
The output head anode of the rectification filtering unit 2 is connected on, second end of the diode group VD2 is connected to three
The base stage of pole pipe Q1, the colelctor electrode of the triode Q1 is connected to the first end of electric capacity C7, the electric capacity C7
The second end be connected to the negative pole of output end of the rectification filtering unit 2.
Preferably, the constant-current charge unit 3 also includes resistance R2 and resistance R3, the resistance R2 series connection
Between the emitter stage of the output head anode of the rectification filtering unit 2 and triode Q1, triode Q1 is realized
Current limliting；The first end of the resistance R3 and second end of diode group VD2 and the base stage of triode Q1
Connection, second end of resistance R3 is connected to the negative pole of output end of the rectification filtering unit 2, so that diode group
VD2 is turned on.
Preferably, the constant-current charge unit 3 also includes resistance R5, and the resistance R5 first ends are connected to three
The colelctor electrode of pole pipe Q1 and the first end of electric capacity C7, second end of resistance R5 are connected to the rectifying and wave-filtering list
First 2 negative pole of output end；When the residual current that circuit is produced disappears, when the triode Q1 is closed, electric capacity C7
Discharged by resistance R5.
Preferably, the voltage detection unit 4 includes voltage checking chip VD5 and switch element 41；It is described
The input of voltage checking chip VD5 is connected to the first end of electric capacity C7, the ground connection of voltage checking chip VD5
End is connected to the negative pole of output end of rectification filtering unit 2, and the output end of voltage checking chip VD5 is connected to switch
Unit 41；When the voltage of electric capacity C7 is less than the detection voltage of voltage checking chip VD5, the voltage detecting
The output end voltage of chip VD5 is low-voltage；When the voltage of electric capacity C7 is equal to or more than voltage checking chip VD5
Detection voltage when, the output end of the voltage checking chip VD5 is high voltage.
Preferably, the switch element 41 include triode Q2, triode Q3, resistance R4, resistance R6 and
Electric capacity C8；The colelctor electrode of the triode Q2 and the base stage of triode Q3 are connected to voltage and examine by resistance R6
The output end of chip VD5 is surveyed, while be also connected to the output end of rectification filtering unit 2 by series resistance R4 bearing
Pole, the electric capacity C8 is connected between the base stage of triode Q3 and the negative pole of output end of rectification filtering unit 2,
The emitter stage of the triode Q2 is connected with execution unit 5, the base stage of the triode Q2 and three pole
The colelctor electrode connection of pipe Q3, emitter stage and the negative pole of output end of rectification filtering unit 2 of the triode Q3 connect
Connect；When the output end voltage of the VD5 is zero or electric close to the negative pole of output end of the rectification filtering unit 2
During pressure, triode Q2 and triode Q3 are closed, and switch element 41 is closed, the emitter stage of triode Q2 with
It is approximate open-circuit condition between the negative pole of output end of rectification filtering unit 2；When the output end voltage of the VD5 connects
When being bordering on 2 output head anode voltage of the rectification filtering unit, triode Q2 and triode Q3 is turned on, and is opened
Close unit 41 open-minded, be approximate between the emitter stage and the negative pole of output end of rectification filtering unit 2 of triode Q2
Conducting state.
Preferably, the residual current collecting unit 1 includes coil L1, electric capacity C3, resistance R1 and TVS
Diode VD1, L1 are the secondary coils of current transformer；The electric capacity C3 and resistance R1 are connected in parallel on described
The two ends of coil L1 constitute the load matched of coil L1；The TVS diode VD1 is also connected in parallel on coil L1
Two ends.
Preferably, the rectification filtering unit 2 include diode group VD3, diode group VD4, electric capacity C2,
C4, C5, C6, and electric capacity C1；It is whole that the diode group VD3 and diode group VD4 constitutes full-wave bridge
Current circuit, is converted into the AC signal that current acquisition unit 1 is exported direct current signal and exports；Electric capacity C2 and
C5 respectively with two diodes in parallel of diode group VD3, C4 and C6 is respectively with the two of diode group VD4
Individual diodes in parallel, the High-frequency Interference in filtering circuit；The electric capacity C1 is connected in parallel on the output of rectifier circuit
End, is smoothed and is filtered to the output voltage of the full-wave bridge rectifier circuit.
Preferably, the execution unit 5 includes coil L2 and voltage-stabiliser tube VZ1；The first end of the coil L2
The emitter stage of the triode Q2 is connected to, the second end is connected to the first end of electric capacity C7, the voltage-stabiliser tube
VZ1 is connected in parallel on coil L2 two ends；When the switch element 41 is when closing is changed into opening, coil L2 conductings
And drive the executing agency of breaker to act.
Preferably, also including simulated experiment unit 6；The simulated experiment unit 6 include by external power source AC,
The simulation residual current test loop that button SB and resistance R1 are composed in series, the loop is mutual from the electric current
Passed through in sensor.
Time lagged type residual current circuit breaker circuit of the invention, for electric capacity fills by way of using constant-current charge
Electricity, is capable of achieving the delay performance of stabilization.Capacitance voltage is detected using voltage checking chip simultaneously, and driving is held
Row mechanism action, can have time lagged type residual current circuit breaker circuit under the conditions of different current leakages
Accurately and reliably acting characteristic.
Brief description of the drawings
Fig. 1 is the circuit diagram of time lagged type residual current circuit breaker circuit of the present invention；
Fig. 2 is another circuit diagram of time lagged type residual current circuit breaker circuit of the present invention.
Specific embodiment
Below in conjunction with the embodiment that accompanying drawing is given, time lagged type residual current circuit breaker electricity of the present invention is further illustrated
The specific embodiment on road.Time lagged type residual current circuit breaker circuit of the present invention is not limited to retouching for following examples
State.
As depicted in figs. 1 and 2, the present invention discloses a kind of time lagged type residual current circuit breaker circuit, including surplus
Aftercurrent collecting unit 1, rectification filtering unit 2, constant-current charge unit 3, voltage detection unit 4, execution
Unit 5 and simulated experiment unit 6.The current acquisition unit 1 perceives the residual current that external circuit is produced,
And export to rectification filtering unit 2 induced-current of generation；The rectification filtering unit 2 receives current acquisition
The alternating current impression signal of the output of unit 1, exports to constant-current charge unit 3 after rectification and filtering are carried out to it；Institute
Stating constant-current charge unit 3 includes electric capacity C7, when circuit produces residual current, 3 pairs of electricity of constant-current charge unit
Holding C7 carries out constant-current charge；The voltage of the detection electric capacity of the voltage detection unit 4 C7, when C7 voltages are more than
During trigger voltage, execution unit 5 is driven to work, so as to drive the executing agency of breaker to act.
As shown in figure 1, the embodiment one of time lagged type residual current circuit breaker circuit of the present invention, the remaining electricity
Stream collecting unit 1 includes coil L1, electric capacity C3, resistance R1 and TVS diode VD1.L1 is mutual electric current
The secondary coil of sensor, the wire of external circuit is passed through from the current transformer, is remained when external circuit is produced
During aftercurrent, coil L1 two ends produce the induced-current of alternation.Electric capacity C3 and resistance R1 are connected in parallel on the line
The two ends of L1 are enclosed, the load matched of coil L1 is constituted.The TVS diode VD1 is that two-way transient state punctures
Diode, diode VD1 is also connected in parallel on the two ends of coil L1, and Main Function is to absorb the surge that L1 is produced
Power, the output electromotive force of limitation current acquisition unit 1, limitation peakflux density prevents magnetic core saturation,
And subsequent conditioning circuit normal work in the case where voltage is allowed is protected, and output voltage is limited in a safe range, protect
Destruction of the component protected in back-end circuit from surge pulse.
The rectification filtering unit 2 include diode group VD3, diode group VD4, electric capacity C2, C4, C5,
C6, and electric capacity C1.The diode group VD3 and diode group VD4 constitutes full-wave bridge rectifier circuit,
The AC signal rectification that current acquisition unit 1 is exported turns into direct current signal and exports；Two pole in the present embodiment
Pipe group VD3 and diode group VD4 is double diode (doudble diode), it is also possible to two discrete two poles
Tube elements replace.Electric capacity C2 and C5 respectively with two diodes in parallel of diode group VD3, C4 and C6 point
Not with two diodes in parallel of diode group VD4, for the High-frequency Interference in filtering circuit, to diode
Group VD3, diode group VD4 play a protective role.The electric capacity C1 is connected in parallel on the output end of rectifier circuit,
The output voltage of the full-wave bridge rectifier circuit is smoothed and filtered.
The constant-current charge unit 3 includes electric capacity C7, triode Q1 and multiple diode series aiding connection
Diode group VD2, diode group VD2 are double and extreme, and the triode Q1 and diode group VD2 is constituted
Constant-current charging circuit, is that electric capacity C7 carries out constant-current charge.The first end and triode of the diode group VD2
The emitter stage of Q1 is both connected to the output head anode of the rectification filtering unit 2, the diode group VD2's
Second end is connected to the base stage of triode Q1, and the colelctor electrode of the triode Q1 is connected to the first of electric capacity C7
End, second end of the electric capacity C7 is connected to the negative pole of output end of the rectification filtering unit 2, is configured to C7
The constant-current charging circuit of charging.In the present embodiment, diode group VD2 includes two diodes, works as rectification
During 2 output drive voltage of filter unit, diode group VD2 two ends can produce the pressure drop of constant about 1.4V,
Triode Q1 steady operations are ensured in magnifying state, and ensure to flow through transistor collector for electric capacity C7 charges
Electric current be essentially steady state value so that, the voltage at electric capacity C7 two ends is raised with constant speed.In this implementation
In example, the constant-current charge unit 3 also includes that resistance R2 and resistance R3, the resistance R2 are connected on described
Between the emitter stage of the output head anode of rectification filtering unit 2 and triode Q1, Main Function is to flowing through three poles
The electric current of pipe Q1 emitter stages carries out current limliting；The first end of the resistance R3 and second end of diode group VD2
And the base stage connection of triode Q1, second end of resistance R3 is connected to the rectification filtering unit 2 and exports
End negative pole, Main Function be make diode group VD2 turn on, so as to triode Q1 emitter stage and base stage it
Between formed stabilization pressure drop.
The voltage detection unit 4 includes voltage checking chip VD5 and switch element 41.The voltage detecting
The input of chip VD5 is connected to the first end of electric capacity C7, and the earth terminal of voltage checking chip VD5 is connected to
The negative pole of output end of rectification filtering unit 2, the output end of voltage checking chip VD5 is connected to switch element 41.
The voltage checking chip VD5 has following working characteristics：When input terminal voltage is less than voltage is released,
Output end voltage is low-voltage, is the negative pole of output end of the rectification filtering unit 2 electricity close to ground connection terminal voltage
Pressure；When input terminal voltage is equal to or more than release voltage, the output end voltage position of voltage checking chip VD5
High voltage, is the voltage of electric capacity C7 first ends close to input voltage, while output end can also produce a fixed width
The high trigger pulses of degree, drive back-end circuit work.The voltage checking chip VD5 can use market
The product of the series such as upper common high-accuracy voltage detection device, such as S-808XXCL.In the present embodiment,
The detection voltage of the voltage checking chip VD5 is set as 3V, and need can be met from S-80830CL chips
Ask, it is of course also possible to select other chips of close specification.
The switch element 41 includes triode Q2, triode Q3, resistance R4, resistance R6 and electric capacity C8.
The triode Q2 and triode Q3 constitutes magnetic silicon controlled switch circuit, is switched as the enable of execution unit 5.
Triode Q2 and triode Q3 also can be used micro-trigger controlled silicon to replace.The colelctor electrode of triode Q2 and three poles
The base stage of pipe Q3 is connected to the output end of voltage checking chip VD5 by resistance R6, while also passing through resistance
R4 is connected in series in the negative pole of output end of rectification filtering unit 2, and the electric capacity C8 is connected to the base of triode Q3
Between pole and the negative pole of output end of rectification filtering unit 2.R6 is current-limiting resistance, determines voltage checking chip VD5
The trigger current size of magnetic silicon controlled switch circuit triggering end is flowed into during chip output high level state.Resistance R4,
Electric capacity C8 answers high-frequency signal for absorbing a certain amount of spatial impression, prevents magnetic silicon controlled switch circuit triggering end hanging
The phenomenon that misleads for producing, further improves circuit reliability.
The emitter stage of the triode Q2 is connected with execution unit 5, the base stage of the triode Q2 with it is described
The colelctor electrode connection of triode Q3, emitter stage and the output end of rectification filtering unit 2 of the triode Q3 are born
Pole connects.When the input of the VD5 is less than 3V, output end voltage is zero or is filtered close to the rectification
The negative pole of output end voltage of ripple unit 2, triode Q2 and triode Q3 are closed, and switch element 41 is closed, and three
It is approximate open-circuit condition between the emitter stage of pole pipe Q2 and the negative pole of output end of rectification filtering unit 2.As the VD5
Input terminal voltage be more than or equal to 3V when, output end voltage close to the rectification filtering unit 2 output rectify
Pole tension, VD5 output ends provide trigger current by resistance R6, what triode Q2 and triode Q3 was constituted
Control silicon circuit conducting, switch element 41 is open-minded, and emitter stage and the rectification filtering unit 2 of triode Q2 are exported
It is approximate conducting state between the negative pole of end, execution unit 5 is acted.
The execution unit 5 includes coil L2 and voltage-stabiliser tube VZ1.The first end of the coil L2 is connected to institute
The emitter stage of triode Q2 is stated, the second end is connected to the first end of electric capacity C7.When the switch element 41 by
When closing is changed into opening, coil L2 is turned on and is driven the executing agency of breaker to act.The voltage-stabiliser tube VZ1
Coil L2 two ends are connected in parallel on, it, when switch element 41 is changed into closing from opening, is coil L2 that Main Function is
Afterflow, improves the reliability of circuit.
The simulated experiment unit 6 includes the mould being composed in series by external power source AC, button SB and resistance R1
Intend residual current test loop, the loop passes through from the current transformer.The external power source AC is
It is simulated experiment and specified AC power is provided, the button SB is simulated experiment switch, the resistance R1
Current limliting is carried out to loop.When breaker apparatus combined floodgate normal work, user presses button SB, simulated experiment
The loop conducting of unit 6, coil L1 produces residual current, drives subsequent conditioning circuit in detecting current transformer
Work, the final executing agency for driving breaker acts.When equipment operation irregularity, user presses button SB,
Will be unable to drive executing agency's action of breaker, reminding the user that needs to check equipment.
As shown in Fig. 2 the embodiment two of time lagged type residual current circuit breaker circuit of the present invention, the present embodiment with
The difference of embodiment one is, the constant-current charge unit 3 also includes resistance R5, the resistance R5 the
One end is connected to the colelctor electrode of triode Q1 and the first end of electric capacity C7, and second end of resistance R5 is connected to institute
State the negative pole of output end of rectification filtering unit 2.Breaker delay precision coherence request it is high, action the frequency it is high
Occasion using the scheme described in the present embodiment, Main Function be the residual current produced when circuit disappear, institute
After stating triode Q1 closings, electric capacity C7 can be substantially discharged by resistance R5 within an operation cycle.In reality
In the application of border, the resistance of resistance R5 should be than larger.
The course of work of time lagged type residual current circuit breaker circuit of the present invention is as follows：
(1) when external circuit normal work, residual current is 0, the excitation of breaker circuit no current；
(2) when external circuit leaks electricity, produce residual current, through current transformer coil L1 sensing and
Be that electric capacity C7 charges in the way of constant current after rectifying and wave-filtering, the voltage of electric capacity C7 under controllable state gradually
Raise, the elevated speed of voltage is only dependent upon charging current and electric capacity C7 size, big with residual current
It is small unrelated；
(3) through charging after a while, electric capacity C7 voltages reach detection voltage value, voltage checking chip
VD5 exports triggering level, and turns on ghyristor circuit, further driving coil L2, so as to drive execution
Mechanism action；The duration for holding C7 chargings is the delay duration of the breaker of setting；
(4) after executing agency's action, external circuit power supply is closed, residual current disappears, and electric capacity C7 passes through
Resistance R5 and other circuit loops discharge, and time lagged type residual current circuit breaker circuit returns to original state.
Above content is to combine specific preferred embodiment further description made for the present invention, no
Can assert that specific implementation of the invention is confined to these explanations.It is common for the technical field of the invention
For technical staff, without departing from the inventive concept of the premise, some simple deductions can also be made or replaced
Change, for example, still use traditional RC charging circuits, but before the charging circuit to rectifying and wave-filtering after output
Voltage stabilizing is carried out, the delay time of controllable charging process and stabilization can be also obtained, this should all be considered as belonging to this
The protection domain of invention.
Claims (10)
1. a kind of time lagged type residual current circuit breaker circuit, it is characterised in that：Including residual current collecting unit
(1), rectification filtering unit (2), constant-current charge unit (3), voltage detection unit (4) and execution unit
(5)；The current acquisition unit (1) exports to rectification filtering unit (2) induced-current of generation；Institute
The AC signal that rectification filtering unit (2) receives current acquisition unit (1) output is stated, rectification is carried out to it
After export to constant-current charge unit (3)；The constant-current charge unit (3) includes electric capacity C7, when circuit is produced
During residual current, constant-current charge unit (3) carries out constant-current charge to electric capacity C7；The voltage detection unit
(4) voltage of detection electric capacity C7, when C7 voltages are more than trigger voltage, drives execution unit (5) work
Make.
2. time lagged type residual current circuit breaker circuit according to claim 1, it is characterised in that：It is described
Constant-current charge unit (3) also includes by triode Q1, and by two poles of multiple diode series aiding connections
Pipe group VD2, the first end of the diode group VD2 and the emitter stage of triode Q1 are connected to the rectification filter
The output head anode of ripple unit (2), second end of the diode group VD2 is connected to the base of triode Q1
Pole, the colelctor electrode of the triode Q1 is connected to the first end of electric capacity C7, and second end of the electric capacity C7 connects
It is connected on the negative pole of output end of the rectification filtering unit (2).
3. time lagged type residual current circuit breaker circuit according to claim 2, it is characterised in that：It is described
Constant-current charge unit (3) also includes that resistance R2 and resistance R3, the resistance R2 are connected on the rectifying and wave-filtering
Between unit (2) output head anode and the emitter stage of triode Q1, the current limliting of triode Q1 is realized；It is described
The first end of resistance R3 is connected with second end of diode group VD2 and the base stage of triode Q1, resistance R3
The second end be connected to the rectification filtering unit (2) negative pole of output end so that diode group VD2 turn on.
4. time lagged type residual current circuit breaker circuit according to claim 2, it is characterised in that：It is described
Constant-current charge unit (3) also includes resistance R5, and the resistance R5 first ends are connected to the current collection of triode Q1
Pole and the first end of electric capacity C7, second end of resistance R5 are connected to the rectification filtering unit (2) output end
Negative pole；When the residual current that circuit is produced disappears, when the triode Q1 is closed, electric capacity C7 passes through resistance
R5 discharges.
5. time lagged type residual current circuit breaker circuit according to claim 1, it is characterised in that：It is described
Voltage detection unit (4) includes voltage checking chip VD5 and switch element (41)；The voltage detecting core
The input of piece VD5 is connected to the first end of electric capacity C7, and the earth terminal of voltage checking chip VD5 is connected to whole
Stream filter unit (2) negative pole of output end, the output end of voltage checking chip VD5 is connected to switch element (41)；
When the voltage of electric capacity C7 is less than the detection voltage of voltage checking chip VD5, the voltage checking chip VD5
Output end voltage be low-voltage；When the voltage of electric capacity C7 is equal to or more than the detection of voltage checking chip VD5
During voltage, the output end of the voltage checking chip VD5 is high voltage.
6. time lagged type residual current circuit breaker circuit according to claim 5, it is characterised in that：It is described
Switch element (41) includes triode Q2, triode Q3, resistance R4, resistance R6 and electric capacity C8；It is described
The colelctor electrode of triode Q2 and the base stage of triode Q3 are connected to voltage checking chip VD5's by resistance R6
Output end, while rectification filtering unit (2) negative pole of output end is also connected to by series resistance R4, it is described
Electric capacity C8 is connected between the base stage of triode Q3 and rectification filtering unit (2) negative pole of output end, and described three
The emitter stage of pole pipe Q2 is connected with execution unit (5), the base stage of the triode Q2 and the triode Q3
Colelctor electrode connection, the emitter stage of the triode Q3 is connected with rectification filtering unit (2) negative pole of output end；
It is zero or close to the rectification filtering unit (2) negative pole of output end voltage when the output end voltage of the VD5
When, triode Q2 and triode Q3 are closed, and switch element (41) is closed, the emitter stage of triode Q2 with
It is approximate open-circuit condition between rectification filtering unit (2) negative pole of output end；When the output end voltage of the VD5
During close to the rectification filtering unit (2) output head anode voltage, triode Q2 and triode Q3 is turned on,
Switch element (41) is open-minded, the emitter stage of triode Q2 and rectification filtering unit (2) negative pole of output end it
Between be approximate conducting state.
7. time lagged type residual current circuit breaker circuit according to claim 1, it is characterised in that：It is described
Residual current collecting unit (1) includes coil L1, electric capacity C3, resistance R1 and TVS diode VD1, L1
It is the secondary coil of current transformer；The electric capacity C3 and resistance R1 are connected in parallel on the two ends structure of the coil L1
Into the load matched of coil L1；The TVS diode VD1 is also connected in parallel on the two ends of coil L1.
8. time lagged type residual current circuit breaker circuit according to claim 1, it is characterised in that：It is described
Rectification filtering unit (2) includes diode group VD3, diode group VD4, electric capacity C2, C4, C5, C6,
And electric capacity C1；The diode group VD3 and diode group VD4 constitutes full-wave bridge rectifier circuit, by electricity
The AC signal of stream collecting unit (1) output is converted into direct current signal and exports；Electric capacity C2 and C5 respectively with
Two diodes in parallel of diode group VD3, C4 and C6 is respectively with two diodes of diode group VD4 simultaneously
Connection, the High-frequency Interference in filtering circuit；The electric capacity C1 is connected in parallel on the output end of rectifier circuit, to described
The output voltage of full-wave bridge rectifier circuit is smoothed and filtered.
9. time lagged type residual current circuit breaker circuit according to claim 1, it is characterised in that：It is described
Execution unit (5) includes coil L2 and voltage-stabiliser tube VZ1；The first end of the coil L2 is connected to described three
The emitter stage of pole pipe Q2, the second end is connected to the first end of electric capacity C7, and the voltage-stabiliser tube VZ1 is in parallel online
Circle L2 two ends；When the switch element (41) is when closing is changed into opening, coil L2 is turned on and driven disconnected
Executing agency's action of road device.
10. time lagged type residual current circuit breaker circuit according to claim 1, it is characterised in that：Also wrap
Include simulated experiment unit (6)；The simulated experiment unit (6) including by external power source AC, button SB and
The simulation residual current test loop that resistance R1 is composed in series, the loop passes through from the current transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510872608.8A CN106816858A (en) | 2015-12-02 | 2015-12-02 | Time lagged type residual current circuit breaker circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510872608.8A CN106816858A (en) | 2015-12-02 | 2015-12-02 | Time lagged type residual current circuit breaker circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106816858A true CN106816858A (en) | 2017-06-09 |
Family
ID=59107518
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510872608.8A Pending CN106816858A (en) | 2015-12-02 | 2015-12-02 | Time lagged type residual current circuit breaker circuit |
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| Country | Link |
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| CN (1) | CN106816858A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109905021A (en) * | 2017-12-11 | 2019-06-18 | 通用电气照明解决方案有限公司 | Power adapter, power conversion method and lighting device |
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| CN2043020U (en) * | 1988-10-15 | 1989-08-16 | 刘豫东 | One-way leakage of electricity protection switch |
| CN201584749U (en) * | 2009-12-04 | 2010-09-15 | 无锡华阳科技有限公司 | Pulse DC current leakage and over-voltage protection device |
| CN102035169A (en) * | 2009-09-28 | 2011-04-27 | 研祥智能科技股份有限公司 | Input overvoltage protection circuit and DC-DC power supply conversion device |
| CN202649296U (en) * | 2012-06-20 | 2013-01-02 | 傅碧辉 | Speech warning circuit of DC power source |
| CN203377585U (en) * | 2013-08-28 | 2014-01-01 | 德力西电气有限公司 | Residual current protection circuit |
| CN205565681U (en) * | 2015-12-02 | 2016-09-07 | 浙江正泰电器股份有限公司 | Time -delayed residual current circuit -breaker circuit |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2043020U (en) * | 1988-10-15 | 1989-08-16 | 刘豫东 | One-way leakage of electricity protection switch |
| CN102035169A (en) * | 2009-09-28 | 2011-04-27 | 研祥智能科技股份有限公司 | Input overvoltage protection circuit and DC-DC power supply conversion device |
| CN201584749U (en) * | 2009-12-04 | 2010-09-15 | 无锡华阳科技有限公司 | Pulse DC current leakage and over-voltage protection device |
| CN202649296U (en) * | 2012-06-20 | 2013-01-02 | 傅碧辉 | Speech warning circuit of DC power source |
| CN203377585U (en) * | 2013-08-28 | 2014-01-01 | 德力西电气有限公司 | Residual current protection circuit |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109905021A (en) * | 2017-12-11 | 2019-06-18 | 通用电气照明解决方案有限公司 | Power adapter, power conversion method and lighting device |
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Application publication date: 20170609 |