CN107370125A - Breaker and its dropout drive circuit - Google Patents
Breaker and its dropout drive circuit Download PDFInfo
- Publication number
- CN107370125A CN107370125A CN201710693434.8A CN201710693434A CN107370125A CN 107370125 A CN107370125 A CN 107370125A CN 201710693434 A CN201710693434 A CN 201710693434A CN 107370125 A CN107370125 A CN 107370125A
- Authority
- CN
- China
- Prior art keywords
- line
- controllable silicon
- diode
- rectifier bridge
- circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/26—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents
- H02H3/32—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/123—Automatic release mechanisms with or without manual release using a solid-state trip unit
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/123—Automatic release mechanisms with or without manual release using a solid-state trip unit
- H01H2071/124—Automatic release mechanisms with or without manual release using a solid-state trip unit with a hybrid structure, the solid state trip device being combined with a thermal or a electromagnetic trip
Abstract
The invention discloses a kind of breaker and its dropout drive circuit, breaker includes tripping coil, first switch and second switch, first switch and the first line of power line are connected in series, and the second circuit that second switch is connected on power line is connected in series, and dropout drive circuit includes：Rectifier bridge, its first end are connected with one end of tripping coil, and its second end is connected with first line, and the other end of tripping coil is connected with the second circuit；Controllable silicon, its one end are connected with the 3rd end of rectifier bridge, and its other end is connected with the 4th end of rectifier bridge, and it is used to control tripping coil to be powered, to drive first switch and second switch to disconnect by tripping coil；Control unit; its one end is connected with the control terminal of controllable silicon; its other end is connected with the shielded line of power line; it is used to control controlled silicon conducting when power line leaks electricity; so that tripping coil is powered; so as to carry out open circuit protection when leaking electricity in circuit, simplify circuit structure and wire laying mode.
Description
Technical field
The present invention relates to detection of electrical leakage technical field, the dropout drive circuit and one kind of more particularly to a kind of breaker have
The breaker of the dropout drive circuit.
Background technology
During the use of household electrical appliance, there is the possibility of electric leakage in the coupling part between household electrical appliance and AC power
Property, once leak electricity, it will household electrical appliance are caused to damage, or even people is damaged.In the related art, household electrical appliance
Electric-leakage detection circuit is usually provided with, to disconnect the connection with AC power when leaking electricity.But existing for correlation technique
Problem is that circuit structure and line layout are complicated, and manufacturing process is cumbersome.
Therefore, need to be improved in correlation technique.
The content of the invention
It is contemplated that at least solves one of technical problem in correlation technique to a certain extent.Therefore, the present invention
One purpose is the dropout drive circuit for proposing a kind of breaker, can carry out open circuit protection in electric leakage, and simplify electricity
Line structure and line layout.
It is another object of the present invention to propose a kind of breaker.
To reach above-mentioned purpose, one aspect of the present invention embodiment proposes a kind of dropout drive circuit of breaker, described
Breaker includes tripping coil, first switch and second switch, and the first switch is connected in series in the first line of power line,
The second switch is connected in series in the second circuit of power line, wherein, the dropout drive circuit includes：Rectifier bridge, it is described
The first end of rectifier bridge is connected with one end of the tripping coil, and the second end of the rectifier bridge is connected with the first line,
Wherein, the other end of the tripping coil is connected with the second circuit；Controllable silicon, one end of the controllable silicon and the rectifier bridge
3rd end is connected, and the other end of the controllable silicon is connected with the 4th end of the rectifier bridge, and the controllable silicon is described for controlling
Tripping coil is powered, to drive the first switch and the second switch to disconnect by the tripping coil；Control unit, institute
The one end for stating control unit is connected with the control terminal of the controllable silicon, the screen of the other end of described control unit and the power line
Cover circuit to be connected, described control unit is used to control the controlled silicon conducting when the power line leaks electricity, so that described
Tripping coil is powered.
The dropout drive circuit of the breaker proposed according to embodiments of the present invention, leaked by control unit in power line
Controlled silicon conducting is controlled when electric, controllable silicon, rectifier bridge and tripping coil form current loop in controlled silicon conducting, so as to thread off
Coil electricity simultaneously drives first switch and second switch to disconnect by tripping coil.Thus, the breaker of the embodiment of the present invention
Dropout drive circuit disconnecting circuit when AC power is leaked electricity, and can be disconnected in the positive-negative half-cycle of AC power, improve
The precision of action, prevent from leaking electricity caused by household electrical appliance damage and personal injury, and simplify circuit structure, line layout
It is more succinct.
According to one embodiment of present invention, the rectifier bridge includes the first diode to the 4th diode, wherein, it is described
The negative electrode of first diode is connected with the anode of second diode and is used as the first end of the rectifier bridge, and the described 2nd 2
The negative electrode of pole pipe is connected with the negative electrode of the 3rd diode and is used as the 3rd end of the rectifier bridge, the 3rd diode
Anode is connected with the negative electrode of the 4th diode and is used as the second end of the rectifier bridge, the anode of the 4th diode with
The anode of first diode is connected and is used as the 4th end of the rectifier bridge.
According to one embodiment of present invention, one end of the controllable silicon is that the other end of anode and the controllable silicon is cloudy
Pole, described control unit include：The first resistor and second resistance of series connection, the first resistor of the series connection and the one of second resistance
End is connected with the shielded line of the power line, the first resistor of the series connection and the other end of second resistance and the controllable silicon
The other end be connected, there is first node between the first resistor and second resistance of the series connection, the first node with it is described
The control pole of controllable silicon is connected；First electric capacity, first electric capacity are connected in parallel on the control pole of the controllable silicon and the controllable silicon
The other end between.
According to one embodiment of present invention, the dropout drive circuit of the breaker also includes：Indicating member, the finger
Show that unit is connected in parallel between the first line and second circuit, the indicating member is used to leak in the power line
It is stopped when electric.
According to one embodiment of present invention, the indicating member includes：Light emitting diode, the sun of the light emitting diode
Pole is connected with the 3rd end of the rectifier bridge；3rd resistor, one end of the 3rd resistor and the negative electrode of the light emitting diode
It is connected, the other end of the 3rd resistor is connected with the first line.
According to one embodiment of present invention, the dropout drive circuit of the breaker also includes：Protection location, the guarantor
Shield unit is connected in parallel between one end and the other end of the controllable silicon, and the protection location is used to protect the controllable silicon.
According to one embodiment of present invention, the protection location includes the first piezo-resistance.
According to one embodiment of present invention, the first line can be live wire or zero line, and second circuit can be zero
Line or live wire.
To reach above-mentioned purpose, a kind of breaker that another aspect of the present invention embodiment proposes, including described breaker
Dropout drive circuit.
The breaker proposed according to embodiments of the present invention, by the dropout drive circuit of above-mentioned breaker, leaking electricity
When disconnecting circuit, and can be disconnected in the positive-negative half-cycle of AC power, improve the precision of action, prevent caused family of leaking electricity
Electrical appliance damages and personal injury, and simplifies circuit structure, and line layout is more succinct.
Brief description of the drawings
Fig. 1 is the block diagram of the dropout drive circuit of breaker according to embodiments of the present invention；
Fig. 2 is the circuit theory diagrams of the dropout drive circuit of breaker according to embodiments of the present invention；And
Fig. 3 is the block diagram of breaker according to embodiments of the present invention.
Reference：
Breaker 10, tripping coil 101, first switch 102 and second switch 103；
Dropout drive circuit 20, controllable silicon 201, rectifier bridge 202 and the control unit 203 of breaker；
First line I and the second circuit II；First diode D1 to the 4th diode D4；
First resistor R1, second resistance R2 and the first electric capacity C1；
Indicating member 204 and protection location 205；
LED, 3rd resistor R3 and the first piezo-resistance MOV1.
Embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to for explaining the present invention, and is not considered as limiting the invention.
Below with reference to the accompanying drawings come describe the embodiment of the present invention proposition breaker and its dropout drive circuit.The present invention's
In one specific embodiment, breaker and its dropout drive circuit can be applied to household electrical appliance, such as air conditioner, refrigerator etc., family
Electrical appliance can be attached in power line by power line incoming transport power supply, breaker and its dropout drive circuit, thus, taken off
Drive circuit is detained when detecting that power line leaks electricity, breaker open circuit can be driven with the company of cut off the electricity supply line and AC power
Connect.
Fig. 1 is the block diagram of the dropout drive circuit of breaker according to embodiments of the present invention.It is as shown in figure 1, disconnected
Road device 10 includes tripping coil 101, first switch 102 and second switch 103, and first switch 102 is connected in series in power line
In first line I, second switch 103 is connected in series in the second circuit II of power line.As shown in figure 1, the dropout of breaker
Drive circuit 20 includes：Controllable silicon 201, rectifier bridge 202 and control unit 203.
Wherein, the first end 1 of rectifier bridge 202 is connected with one end of tripping coil 101, the second end 2 of rectifier bridge 202 and
One circuit I is connected, wherein, the other end of tripping coil 101 is connected with the second circuit II；Controllable silicon 201, the one of controllable silicon 201
End is connected with the 3rd end 3 of rectifier bridge 202, and the other end of controllable silicon 201 is connected with the 4th end 4 of rectifier bridge 202, controllable silicon
201 are used to control tripping coil 101 to be powered, to drive first switch 102 and second switch 103 to disconnect by tripping coil 101；
Control unit 203, one end of control unit 203 are connected with the control terminal of controllable silicon 201, the other end and the electricity of control unit 203
The shielded line 30 of source line is connected, and control unit 203 is used to control controllable silicon 201 to turn on when power line leaks electricity, so that
Tripping coil 101 is powered.
According to one embodiment of present invention, first line I can be that live wire L or zero line N, the second circuit II can be zero line N
Or live wire L.
Specifically, the first line I of power line and the second circuit II one end are connected with AC power, and the of power line
One circuit I and the second circuit II other end are connected with household electrical appliance, in normal state, first switch 102 and second switch
103 closures, AC power are powered by first line I and the second circuit II for household electrical appliance.When power line leaks electricity, control
Unit 203 processed generates trigger signal, and trigger signal is exported to the control terminal of controllable silicon 201, controllable silicon 201 and terminated in control
Trigger signal conducting is received, controllable silicon 201, rectifier bridge 202 and tripping coil 101 form current loop, and tripping coil 101 is logical
Electricity, and then drive first switch 102 and second switch 103 to disconnect, thus, the action of dropout drive circuit is threaded off, and realizes household electric
Electrically connected disconnection between device and AC power, AC power are cut off, and are realized when leaking electricity to electrical equipment and people
The protection of body.
So that first line I is zero line and the second circuit II is live wire as an example, the work of the dropout drive circuit 20 of breaker
Principle is as follows：
When leaking electricity, control unit 203 exports trigger signal to the control terminal of controllable silicon 201, now if First Line
Road I electric current is in the first of negative half-cycle, i.e. current potential, then rectifier bridge 202 of the first line I current potential less than the second circuit II
The current potential at end 1 is higher than the current potential at the 3rd end 3 of rectifier bridge 202, and the current potential at the 4th end 4 of rectifier bridge 202 is higher than rectifier bridge 202
The current potential at the second end 2, controllable silicon 201 turn on, and the tie point conducting of rectifier bridge 202, wherein, first of rectifier bridge 202
Road will illustrate in described below, and thus controllable silicon 201, the tie point of rectifier bridge 202 and tripping coil 101 form electricity
Road is flowed back to, tripping coil 101 is powered, and then drives first switch 102 and second switch 103 to disconnect, thus, dropout drive circuit
Action is threaded off, and realizes the electrically connected disconnection between household electrical appliance and AC power, AC power is cut off, realizes and leak electricity
When to electrical equipment and the person protection；If first line I electric current is in the current potential of positive half period, i.e. first line I
Higher than the second circuit II current potential, then the current potential at the second end 2 of rectifier bridge 202 higher than the 3rd end 3 of rectifier bridge 202 current potential,
The current potential at the 4th end 4 of rectifier bridge 202 is higher than the current potential of the first end 1 of rectifier bridge 202, and controllable silicon 201 turns on, and rectifier bridge
202 the second branch road conducting, wherein, the second branch road of rectifier bridge 202 will illustrate in described below, thus controllable silicon
201st, the second branch road of rectifier bridge 202 and tripping coil 101 form current loop, and tripping coil 101 is powered, and then drive first
Switch 102 and second switch 103 are disconnected, and thus, the action of dropout drive circuit is threaded off, and is realized between household electrical appliance and AC power
Electrically connected disconnection, AC power is cut off, and realizes when leaking electricity to electrical equipment and personal protection.
It should be noted that when first line I is live wire, power line leaks electricity when the second circuit II is zero line, its work
It is consistent with above-mentioned analysis to make principle, this is no longer going to repeat them.
Thus, the dropout drive circuit of breaker of the invention disconnecting circuit when leaking electricity, and in AC power
Positive-negative half-cycle can disconnect, and improve the precision of action, prevent leak electricity caused household electrical appliance damage and personal injury, and letter
Circuit structure is changed, line layout is more succinct.
It is former that the circuit structure of the dropout drive circuit of the breaker of the embodiment of the present invention and work are described with reference to Fig. 2
Reason, wherein, first line I is zero line, and the second circuit II is live wire.
According to one embodiment of present invention, as shown in Fig. 2 rectifier bridge 202 includes the first diode D1 to the four or two pole
Pipe D4, wherein, the first diode D1 negative electrode is connected with the second diode D2 anode and is used as the first end 1 of rectifier bridge 202,
Second diode D2 negative electrode is connected with the 3rd diode D3 negative electrode and is used as the 3rd end 3 of rectifier bridge 202, the 3rd diode
D3 anode is connected with the 4th diode D4 negative electrode and is used as the second end 2 of rectifier bridge 202, the 4th diode D4 anode with
First diode D1 anode is connected and is used as the 4th end 4 of rectifier bridge 202.Wherein, the second diode D2 and the 4th diode
D4 forms the tie point of rectifier bridge 202, and the first diode D1 and the 3rd diode D3 form the second branch road of rectifier bridge 202.
According to one embodiment of present invention, one end of controllable silicon 201 is that the other end of anode and controllable silicon 201 is cloudy
Pole, control unit 203 include：The first resistor R1 and second resistance R2 and the first electric capacity C1 of series connection, wherein, the first of series connection
Resistance R1 and second resistance R2 one end are connected with the shielded line of power line, the first resistor R1's and second resistance R2 of series connection
The other end is connected with the other end of controllable silicon 201, has first node between the first resistor R1 and second resistance R2 of series connection, the
One node is connected with the control pole of controllable silicon 201；First electric capacity C1 is connected in parallel on the control pole and controllable silicon 201 of controllable silicon 201
Between the other end.
Specifically, it is assumed that first line I is that zero line leaks electricity, then shielded line 30 is contacted with first line I and led
Electricity, first line I electric current is by shielded line 30 and flows through the first resistor R1 and second resistance R2 of series connection, first resistor R1
Partial pressure is carried out to first line I electric current with second resistance R2, if first line I electric current is in positive half period, the
Two resistance R2 both ends form forward voltage drop, to apply trigger signal (such as positive trigger current) to the control terminal of controllable silicon 201,
The first electric capacity C1 is charged simultaneously；If first line I electric current is in negative half-cycle, the first electric capacity C1 is put
Electricity, to apply trigger signal (such as positive trigger current) to the control terminal of controllable silicon 201.
Also, it is that operation principle is essentially identical when live wire leaks electricity in the second circuit II, difference is, shielded line 30
Conduction is contacted with the second circuit II, the second circuit II electric current flows through the first resistor R1 and second of series connection by shielded line 30
Resistance R2, when the second circuit II electric current is in positive half period, first line I electric current is in negative half-cycle, second resistance
R2 both ends form forward voltage drop；When the second circuit II electric current is in negative half-cycle, first line I electric current is in positive half period
When, discharged by the first electric capacity C1 to apply trigger signal.
Thus, control unit 203 can apply trigger signal to controllable silicon 201 in the positive-negative half-cycle of alternating current, with triggering
Controlled silicon conducting.
According to one embodiment of present invention, as shown in Fig. 2 the dropout drive circuit 20 of breaker also includes：Instruction is single
Member 204, indicating member 204 is connected in parallel between first line I and the second circuit II, and indicating member 204 is used to occur in power line
It is stopped during electric leakage.
According to one embodiment of present invention, as shown in Fig. 2 indicating member 204 includes：LED and the 3rd
Resistance R3, wherein, the anode of LED is connected with the 3rd end of rectifier bridge 202；3rd resistor R3 one end is with lighting
The negative electrode of diode (LED) is connected, and the 3rd resistor R3 other end is connected with first line I.
According to one embodiment of present invention, as shown in Fig. 2 the dropout drive circuit 20 of breaker also includes：Protection is single
Member 205, protection location 205 is connected in parallel between one end and the other end of controllable silicon 201, and protection location 205 is used to protect controllable silicon
201。
According to one embodiment of present invention, as shown in Fig. 2 protection location 205 includes the first piezo-resistance MOV1.Its
In, the first piezo-resistance MOV1 is used to prevent surge voltage from damaging controllable silicon 201.
Specifically, when power line does not leak electricity, electric current is not had to flow through on shielded line 30, control unit 203 is not
Trigger signal is generated, controllable silicon 201 is held off, and now, tripping coil 101 powers off, first switch 102 and second switch 103
Remain closed, household electrical appliance keep electrically connected with AC power, when the electric current that the second circuit II is live wire is in positive half period
When, the second diode D2 conductings, electric current flows out from the second circuit II, then flows to the first of rectifier bridge 202 through tripping coil 101
1 is held, and then the anode of LED is flowed into after the second diode D2, finally by LED and the 3rd
Resistance R3 flows into first line I, thus second circuit II- tripping coils 101- the second diode D2- LEDs-the
Three resistance R3- first line I form current loop, and LED is remain on, wherein, the second diode D2 is used to prevent
Only backward voltage acts on LED, to avoid backward voltage from damaging LED.Now, in current loop
Electric current it is very small, such as milliampere level, therefore, tripping coil 101 can not drive first switch 102 and second switch 103 to disconnect.
It should be noted that when the electric current that the second circuit II is live wire is in negative half-cycle, the second diode D2 shut-offs,
LED extinguishes, so, LED equivalent to alternately lighting or extinguish, but due to interval time compared with
Short (such as 10ms), human eye can not make a distinction, and therefore, can be regarded as the state that LED is remain on.
When power line leaks electricity, such as first line I is that zero line leaks electricity, first line I and shielded line 30
Contact is conductive, and first line I electric current flows through the first resistor R1 and second resistance R2 of series connection by shielded line 30, and control is single
Member 203 applies trigger signal to the control terminal of controllable silicon 201.If the second circuit II electric current is in positive half period and First Line
Road I electric current is in negative half-cycle, i.e., the second circuit II current potential is higher than first line I current potential, then the second diode D2, the
Four diode D4 and controllable silicon 201 turn on, the first diode D1 and the 3rd diode D3 cut-offs.Now, electric current is from the second circuit
II flow out, then through tripping coil 101 flow into the second diode D2 anode, electric current after the second diode D2 from controllable
The anode of silicon 201 flows into simultaneously to flow out from the negative electrode of controllable silicon 201, and subsequent electric current flows into from the 4th diode D4 anode and from the
Four diode D4 negative electrode outflow, last electric current flow into first line I, wherein, the second diode D2 and the 4th diode D4 structures
Into the tie point of rectifier bridge 202, thus the second diode D2- of the second circuit II- tripping coil 101- rectifier bridges 202 is controllable
4th diode D4- first line I of silicon 201- rectifier bridges 202 forms current loop, and tripping coil 101 is powered, and then drives
First switch 102 and second switch 103 are disconnected, and thus, the action of dropout drive circuit is threaded off, between household electrical appliance and AC power
Electrically connected disconnection, AC power is cut off, to the protection of electrical equipment and the person when being leaked electricity so as to realize；If
The electric current that second circuit II electric current is in negative half-cycle and first line I is in the current potential of positive half period, i.e. the second circuit II
Less than first line I current potential, then the current potential at the second end 2 of rectifier bridge 202 higher than the 3rd end 3 of rectifier bridge 202 current potential, it is whole
The current potential at the 4th end 4 of bridge 202 is flowed higher than the current potential of the first end 1 of rectifier bridge 202, the first diode D1, the 3rd diode D3
Turned on controllable silicon 201, the second diode D2 and the 4th diode D4 cut-offs.Now, electric current flows out from first line I, then
Flow into from the 3rd diode D3 anode and flowed out from the 3rd diode D3 negative electrode, electric current after the 3rd diode D3 from
The anode of controllable silicon 201 is flowed into and flowed out from the negative electrode of controllable silicon 201, and subsequent electric current flows into simultaneously from the first diode D1 anode
Being flowed out from the first diode D1 negative electrode, last electric current flows into the second circuit II by tripping coil 101, wherein, the one or two pole
Pipe D1 and the 3rd diode D3 forms the 3rd diode of the second branch road, thus first line I- rectifier bridges 202 of rectifier bridge 202
First diode D1- tripping coils the second circuits of 101- II of D3- controllable silicon 201- rectifier bridges 202 forms current loop, threads off
Coil 101 is powered.Thus, dropout drive circuit action is threaded off, and household electrical appliance disconnect the connection with AC power, AC power quilt
Cut-out, to the protection of electrical equipment and the person when being leaked electricity so as to realize.
Wherein, when tripping coil 101 is powered, the current peak of tripping coil 101 is flowed through in 2.8A to 3A (with breaker
Relating to parameters), de- mouth line circle 101 drives first switch 102 and second switch 103 to disconnect, and actuation time is up to 6ms.
Further, after first line I and the second circuit II disconnects the connection with AC power, LED
Extinguish.
It should be noted that be that operation principle is essentially identical when live wire leaks electricity in the second circuit II, it is no longer detailed here
Carefully repeat.
To sum up, the dropout drive circuit of the breaker proposed according to embodiments of the present invention, by control unit in power line
Controlled silicon conducting is controlled when leaking electricity, controllable silicon, rectifier bridge and tripping coil form current loop in controlled silicon conducting, with
Tripping coil is powered and drive first switch and second switch to disconnect by tripping coil.It follows that the open circuit of the present invention
The dropout drive circuit of device disconnecting circuit when leaking electricity, and can be disconnected in the positive-negative half-cycle of AC power, improve dynamic
The precision of work, leak electricity caused household electrical appliance damage and personal injury are prevented, and simplify circuit structure, line layout is more
Succinctly.
Fig. 3 is the block diagram of breaker according to embodiments of the present invention.As shown in figure 3, the breaker 10 includes breaking
The dropout drive circuit 20 of road device.
Breaker according to embodiments of the present invention, by the dropout drive circuit of above-mentioned breaker, break when leaking electricity
Open circuit, and can be disconnected in the positive-negative half-cycle of AC power, the precision of action is improved, prevents the caused household electric that leaks electricity
Device damages and personal injury, and simplifies circuit structure, and line layout is more succinct.
In the description of the invention, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", " on ", " under ", "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outer ", " up time
The orientation or position relationship of the instruction such as pin ", " counterclockwise ", " axial direction ", " radial direction ", " circumference " be based on orientation shown in the drawings or
Position relationship, it is for only for ease of and describes the present invention and simplify description, rather than indicates or imply that signified device or element must
There must be specific orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are only used for describing purpose, and it is not intended that instruction or hint relative importance
Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can be expressed or
Implicitly include at least one this feature.In the description of the invention, " multiple " are meant that at least two, such as two, three
It is individual etc., unless otherwise specifically defined.
In the present invention, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " fixation " etc.
Term should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integrally；Can be that machinery connects
Connect or electrically connect；Can be joined directly together, can also be indirectly connected by intermediary, can be in two elements
The connection in portion or the interaction relationship of two elements, limited unless otherwise clear and definite.For one of ordinary skill in the art
For, the concrete meaning of above-mentioned term in the present invention can be understood as the case may be.
In the present invention, unless otherwise clearly defined and limited, fisrt feature can be with "above" or "below" second feature
It is that the first and second features directly contact, or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature are directly over second feature or oblique upper, or be merely representative of
Fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be
One feature is immediately below second feature or obliquely downward, or is merely representative of fisrt feature level height and is less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or the spy for combining the embodiment or example description
Point is contained at least one embodiment or example of the present invention.In this manual, to the schematic representation of above-mentioned term not
Identical embodiment or example must be directed to.Moreover, specific features, structure, material or the feature of description can be with office
Combined in an appropriate manner in one or more embodiments or example.In addition, in the case of not conflicting, the skill of this area
Art personnel can be tied the different embodiments or example and the feature of different embodiments or example described in this specification
Close and combine.
Although embodiments of the invention have been shown and described above, it is to be understood that above-described embodiment is example
Property, it is impossible to limitation of the present invention is interpreted as, one of ordinary skill in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, changed, replacing and modification.
Claims (9)
1. the dropout drive circuit of a kind of breaker, it is characterised in that the breaker includes tripping coil, first switch and the
Two switches, the first switch are connected in series in the first line of power line, and the second switch is connected in series in power line
Second circuit, wherein, the dropout drive circuit includes：
Rectifier bridge, the first end of the rectifier bridge are connected with one end of the tripping coil, the second end of the rectifier bridge and institute
First line is stated to be connected, wherein, the other end of the tripping coil is connected with the second circuit；
Controllable silicon, one end of the controllable silicon are connected with the 3rd end of the rectifier bridge, the other end of the controllable silicon with it is described
4th end of rectifier bridge is connected, and the controllable silicon is used to control the tripping coil to be powered, to be driven by the tripping coil
The first switch and the second switch disconnect；
Control unit, one end of described control unit are connected with the control terminal of the controllable silicon, the other end of described control unit
It is connected with the shielded line of the power line, described control unit is described controllable for being controlled when the power line leaks electricity
Silicon turns on, so that the tripping coil is powered.
2. the dropout drive circuit of breaker according to claim 1, it is characterised in that the rectifier bridge includes the one or two
Pole pipe to the 4th diode, wherein, the negative electrode of first diode is connected with the anode of second diode and is used as institute
State the first end of rectifier bridge, the negative electrode of second diode is connected with the negative electrode of the 3rd diode and is used as the rectification
3rd end of bridge, the anode of the 3rd diode are connected with the negative electrode of the 4th diode and are used as the of the rectifier bridge
Two ends, the anode of the 4th diode are connected with the anode of first diode and are used as the 4th end of the rectifier bridge.
3. the dropout drive circuit of breaker according to claim 1, it is characterised in that one end of the controllable silicon is sun
The other end of pole and the controllable silicon is negative electrode, and described control unit includes：
The first resistor and second resistance of series connection, the first resistor of the series connection and one end of second resistance and the power line
Shielded line is connected, and the first resistor of the series connection and the other end of second resistance are connected with the other end of the controllable silicon, institute
Stating has first node between the first resistor of series connection and second resistance, the control pole phase of the first node and the controllable silicon
Even；
First electric capacity, first electric capacity are connected in parallel between the control pole of the controllable silicon and the other end of the controllable silicon.
4. the dropout drive circuit of breaker according to claim 2, it is characterised in that also include：
Indicating member, the indicating member are connected in parallel between the first line and second circuit, and the indicating member is used
It is stopped in when the power line leaks electricity.
5. the dropout drive circuit of breaker according to claim 4, it is characterised in that the indicating member includes：
Light emitting diode, the anode of the light emitting diode are connected with the 3rd end of the rectifier bridge；
3rd resistor, one end of the 3rd resistor are connected with the negative electrode of the light emitting diode, the 3rd resistor it is another
End is connected with the first line.
6. the dropout drive circuit of breaker according to claim 1, it is characterised in that also include：
Protection location, the protection location are connected in parallel between one end and the other end of the controllable silicon, and the protection location is used for
Protect the controllable silicon.
7. the dropout drive circuit of breaker according to claim 6, it is characterised in that the protection location includes first
Piezo-resistance.
8. the dropout drive circuit of breaker according to claim 1, it is characterised in that the first line be live wire or
Zero line, second circuit are zero line or live wire.
A kind of 9. breaker, it is characterised in that the dropout driving including the breaker according to any one of claim 1-8
Circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710693434.8A CN107370125A (en) | 2017-08-14 | 2017-08-14 | Breaker and its dropout drive circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710693434.8A CN107370125A (en) | 2017-08-14 | 2017-08-14 | Breaker and its dropout drive circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107370125A true CN107370125A (en) | 2017-11-21 |
Family
ID=60309462
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710693434.8A Pending CN107370125A (en) | 2017-08-14 | 2017-08-14 | Breaker and its dropout drive circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107370125A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200976482Y (en) * | 2006-10-23 | 2007-11-14 | 上海益而益电器制造有限公司 | Leakage detection protective circuit |
| CN201966581U (en) * | 2010-05-18 | 2011-09-07 | 黄华道 | Electric leakage detection and protection circuit |
| CN204179638U (en) * | 2014-08-10 | 2015-02-25 | 常安集团有限公司 | A kind of residual current circuit breaker |
| CN207303987U (en) * | 2017-08-14 | 2018-05-01 | 广东美的制冷设备有限公司 | Breaker and its dropout drive circuit |
-
2017
- 2017-08-14 CN CN201710693434.8A patent/CN107370125A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200976482Y (en) * | 2006-10-23 | 2007-11-14 | 上海益而益电器制造有限公司 | Leakage detection protective circuit |
| CN201966581U (en) * | 2010-05-18 | 2011-09-07 | 黄华道 | Electric leakage detection and protection circuit |
| CN204179638U (en) * | 2014-08-10 | 2015-02-25 | 常安集团有限公司 | A kind of residual current circuit breaker |
| CN207303987U (en) * | 2017-08-14 | 2018-05-01 | 广东美的制冷设备有限公司 | Breaker and its dropout drive circuit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107294059B (en) | Use electric detection means | |
| US20150326003A1 (en) | Earth Leakage Circuit Breaker | |
| CN106877277B (en) | A kind of control relay circuit, vehicle control electronics and vehicle | |
| CN107637169A (en) | Can delay lighting circuit and device | |
| CN104426128B (en) | Broken neutral line detects circuit and corresponding residual current circuit breaker | |
| CN106711938A (en) | Leakage protector | |
| CN103166172B (en) | Leakage protection circuit, socket and electronic installation with leakage protection circuit | |
| CN104577971B (en) | Power off trip protection plug | |
| CN108631263A (en) | Ground-fault protection system | |
| CN108093523B (en) | The control circuit and power supply of AC dump and light modulation shutdown | |
| CN103490377A (en) | Protection circuit for electric leakage detection | |
| CN105490101B (en) | Has the protection plug of power-off tripping and superpressure trip avoidance function | |
| CN104795789B (en) | A kind of automatic monitoring circuit of earth fault earth leakage protective device | |
| CN105977907B (en) | Electricity-saving type ground-fault interrupter | |
| CN104078923B (en) | Over under-voltage protection circuit and lighting device | |
| CN104795790B (en) | Can automatic identification switching voltage x current type earth leakage protective device device | |
| CN105896196A (en) | Intelligent electric leakage protection plug | |
| CN103269057B (en) | A kind of earth-fault protection | |
| CN207303987U (en) | Breaker and its dropout drive circuit | |
| CN104377647A (en) | Electric leakage protection circuit | |
| CN109417290A (en) | Protect circuit and distributor | |
| CN107370125A (en) | Breaker and its dropout drive circuit | |
| CN104979798B (en) | Automatic identification omnibearing protection earth leakage protective device device | |
| CN206432694U (en) | Earth leakage protective device | |
| CN103296639B (en) | A kind of leakage warning and protective circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20171121 |
|
| RJ01 | Rejection of invention patent application after publication |