CN206962425U - residual current action breaker device - Google Patents

residual current action breaker device Download PDF

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Publication number
CN206962425U
CN206962425U CN201720891732.3U CN201720891732U CN206962425U CN 206962425 U CN206962425 U CN 206962425U CN 201720891732 U CN201720891732 U CN 201720891732U CN 206962425 U CN206962425 U CN 206962425U
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China
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circuit
signal
zct
electric capacity
breaker device
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CN201720891732.3U
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Chinese (zh)
Inventor
胡佩
朱明龙
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Shanghai Jingyi Switch Factory Co Ltd
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Shanghai Jingyi Switch Factory Co Ltd
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Abstract

A kind of residual current action breaker device, including at least ZCT, trip switch, signal rectifier circuit, signal processing chip, dropout control circuit, display circuit, warning circuit, rectification circuit and test circuit, the transformer iron core of the ZCT is passed through for the three-phase firewire of alternating current circuit, and the trip switch is arranged in alternating current circuit to control the shut-off of alternating current circuit;The rectification circuit is three-phase full wave rectifier circuit, and the signal rectifier circuit is arranged between ZCT and signal processing chip, and the signal processing chip is connected to dropout control circuit, display circuit and warning circuit;Thus, the utility model realizes effective controllable shut-off, can realize overcurrent protection again, effectively increase operating reliability, reduce later maintenance, extend service life by improving protection circuit.

Description

Residual current action breaker device
Technical field
It the utility model is related to the technical field of breaker, more particularly to a kind of residual current action breaker device.
Background technology
Current Aftercurrent protection circuit breaker widely used in the distribution circuit, it is mainly used for the body electric shock to people A kind of electrical equipment of protective effect is provided.When the moment of the body generation accidental shock of people, between either directly contact is got an electric shock still Contact get an electric shock, Aftercurrent protection circuit breaker can quick acting, cut off input power at once, avoid shock current to people Body produce further injury.Aftercurrent protection circuit breaker may also be used for preventing the earth-fault current by electrical equipment Caused fire hazard.With the increase of electrical equipment service life or the variation of use environment so that the insulation of electrical equipment Material also can aging therewith, aging degree increase while, dielectric level also gradually reduces, when insulating materials is reduced to not When can bear its supply voltage, insulating materials will be breakdown.Now, power supply will produce one by electrical equipment and connect over the ground Earth fault electric current, aggravate along with insulating materials damaged condition, fault current also continues to increase, enter caused by appliance fire danger Danger.
Existing Aftercurrent protection circuit breaker is generally made up of electronic circuit and operating mechanism, and reliability is poor, is used Life-span is also limited.
Therefore, designer of the present utility model, in view of drawbacks described above, by concentrating on studies and designing, synthesis is long-term for many years The experience and achievement of related industry are engaged in, research and design goes out a kind of residual current action breaker device, to overcome drawbacks described above.
Utility model content
The purpose of this utility model is to provide a kind of residual current action breaker device, and its is simple in construction, operation side Just, operating reliability is improved.
To solve the above problems, the utility model discloses a kind of residual current action breaker device, including at least zero It is sequence transformer, trip switch, signal rectifier circuit, signal processing chip, dropout control circuit, display circuit, warning circuit, whole Current circuit and test circuit, it is characterised in that:
The transformer iron core of the ZCT is passed through for the three-phase firewire of alternating current circuit, and the trip switch is arranged at To control the shut-off of alternating current circuit in alternating current circuit;
The rectification circuit is three-phase full wave rectifier circuit, and it includes 6 commutation diodes, and 6 commutation diodes are two-by-two Progress is in parallel after one group of series connection, and the three-phase firewire in the alternating current circuit is respectively connecting between two commutation diodes of each group;
The signal rectifier circuit is arranged between ZCT and signal processing chip, the signal rectifier circuit bag Containing first resistor, second resistance, 3rd resistor, the first electric capacity, the second electric capacity, the 3rd electric capacity, the first diode and the two or two pole Pipe, the output signal of the ZCT are parallel to the one or two pole of first resistor, the first electric capacity and relative reverse parallel connection After pipe and the second diode both ends, it is series at respectively after second resistance and 3rd resistor and signal is sent into signal processing chip, institute The both ends for stating the first electric capacity further respectively have the second electric capacity and the 3rd electric capacity;
The signal processing chip is connected to dropout control circuit, display circuit and warning circuit;
The test circuit includes the button switch that one end is connected to one of live wire in three-phase firewire, and the button is opened Close the other end and be wound in after the transformer iron core of ZCT a resistance of connecting.
Wherein:The dropout control circuit includes the controllable silicon and tripping coil of arranged in series, the tripping coil connection To trip switch to be controlled, the control signal of the signal processing chip inputs controllable silicon to provide Continuity signal.
Wherein:The tripping coil both ends of a dropout control circuit diode in parallel, the negative electrode series connection of the controllable silicon Two diodes again an in parallel piezo-resistance so as to improving anti-interference and controllable silicon the security performance of circuit.
Wherein:Anti-surge circuit is additionally provided between the rectification circuit and three-phase firewire, the anti-surge circuit is included and set Three piezo-resistances being placed between rectification circuit and three-phase firewire.
Wherein:The display circuit be LED display circuit to be shown to signal, the warning circuit is sound and light alarm Circuit is to provide sound and light alarm signal.
The utility model realizes effective controllable shut-off, can realize overcurrent protection again by improving protection circuit, Operating reliability is effectively increased, reduces later maintenance, extends service life.
Detailed content of the present utility model can be obtained by explanation described later and institute's accompanying drawing.
Brief description of the drawings
Fig. 1 shows the electrical block diagram of residual current action breaker device of the present utility model.
Fig. 2 shows the schematic diagram of dropout control circuit in the utility model.
Reference:
10th, ZCT;11st, trip switch;12nd, signal rectifier circuit;13rd, signal processing chip;14th, thread off and control Circuit;15th, display circuit;16th, warning circuit;17th, rectification circuit;18th, anti-surge circuit;19th, test circuit.
Embodiment
Referring to Fig. 1, it is shown that residual current action breaker device of the present utility model.
The residual current action breaker device comprises at least ZCT 10, trip switch 11, signal rectification electricity Road 12, signal processing chip 13, dropout control circuit 14, display circuit 15, warning circuit 16, rectification circuit 17 and test circuit 19。
Wherein, run through in the ZCT 10 for alternating current circuit, three-phase firewire (A phases, B in the alternating current circuit Phase, C phases) passed through from the transformer iron core of ZCT 10, the trip switch 11 is arranged in alternating current circuit, with control The shut-off of alternating current circuit processed.
Wherein, rectification circuit 17 is three-phase full wave rectifier circuit, its include 6 commutation diodes D1, D2, D3, D4, D5 and One group of series connection (i.e. three groups) carries out parallel connection, the alternating current afterwards two-by-two by D6,6 commutation diodes D1, D2, D3, D4, D5 and D6 Three-phase firewire in road is respectively connecting between two commutation diodes of each group, electricity needed for output after three groups of commutation diode parallel connections Stream.
Wherein, anti-surge circuit 18, the anti-surge circuit bag are additionally provided between the rectification circuit 17 and three-phase firewire Containing three piezo-resistances VDR1, VDR2 and VDR3 being arranged between rectification circuit and three-phase firewire, the anti-surge circuit can Rush of current, protection rectification circuit and the supply voltage provided are effectively provided.
The signal rectifier circuit 12 is arranged between ZCT 10 and signal processing chip 13, at the signal Chip 13 is managed using existing technology, is not repeated, the signal processing chip 13 is responsible for differentiating the size of current signal Whether the threshold value of setting is reached, if reaching threshold value, control dropout control circuit is acted, and realizes the shut-off of circuit, such as Fruit current signal is normally not up to given threshold, then keeps dropout control circuit to be failure to actuate, holding circuit is normal.
Wherein, the signal rectifier circuit include first resistor R1, second resistance R2,3rd resistor R3, the first electric capacity C1, Second electric capacity C2, the 3rd electric capacity C3, the first diode D7 and the second diode D8, the output signal of the ZCT 10 It is parallel to first resistor R1, the first electric capacity C1 and relative reverse parallel connection the first diode D7 and the second diode D8 both ends Afterwards, it is series at respectively after second resistance R2 and 3rd resistor R3 and signal is sent into signal processing chip 13, the first electric capacity C1 Both ends further respectively have the second electric capacity C2 and the 3rd electric capacity C3, to provide preferable rectified signal.
The signal processing chip 13 is connected to dropout control circuit 14, display circuit 15 and warning circuit 16, described de- Button control circuit 14 controls the trip switch 11 to carry out circuit shut-off by control signal.
Referring to Fig. 2, preferable dropout control circuit 14 includes the controllable silicon SCR and tripping coil KA of arranged in series, described Tripping coil KA is connected to trip switch 11 to be controlled, the control signal input controllable silicon of the signal processing chip 13 SCR is to provide Continuity signal, so as to carry out shut-off control using tripping coil KA, wherein, the dropout control circuit 14 takes off One diode D10 of fastening wire circle KA both ends parallel connection, the two diode D11 and D12 of negative electrode series connection of the controllable silicon SCR again press by parallel connection one Quick resistance VDR4, so as to improve anti-interference and controllable silicon the security performance of circuit.Wherein, can also be before tripping coil KA One diode D9 of end series connection, to improve the security performance of tripping coil and service life.
The test circuit 19 includes the button switch that one end is connected to one of live wire in three-phase firewire, the button The switch other end is wound in after the transformer iron core of ZCT 10 the resistance R4 that connects.
Wherein, the display circuit 15 can be LED display circuit, and to be shown to signal, the warning circuit 16 can For sound light alarming circuit, to provide sound and light alarm signal.
Thus, the application realizes effective controllable shut-off, can realize over current protection again by improving protection circuit Shield, effectively increases operating reliability, reduces later maintenance, extend service life.
It is readily apparent that the description and record of the above are only to illustrate rather than in order to limit disclosure of the present utility model Content, application or use.Although being described in embodiment and embodiment being described in the drawings, the utility model Do not limit by accompanying drawing example and described in embodiment as it is now recognized that optimal mode to implement religion of the present utility model The specific examples led, the scope of the utility model is by any implementation including falling into description and appended claims above Example.

Claims (5)

  1. A kind of 1. residual current action breaker device, including at least ZCT, trip switch, signal rectifier circuit, letter Number process chip, dropout control circuit, display circuit, warning circuit, rectification circuit and test circuit, it is characterised in that:
    The transformer iron core of the ZCT passes through for the three-phase firewire of alternating current circuit, and the trip switch is arranged at exchange To control the shut-off of alternating current circuit in circuit;
    The rectification circuit is three-phase full wave rectifier circuit, and it includes 6 commutation diodes, one group two-by-two of 6 commutation diodes Progress is in parallel after series connection, and the three-phase firewire in the alternating current circuit is respectively connecting between two commutation diodes of each group;
    The signal rectifier circuit is arranged between ZCT and signal processing chip, and the signal rectifier circuit includes the One resistance, second resistance, 3rd resistor, the first electric capacity, the second electric capacity, the 3rd electric capacity, the first diode and the second diode, institute The output signal for stating ZCT is parallel to first resistor, the first diode of the first electric capacity and relative reverse parallel connection and the Behind two diode both ends, it is series at respectively after second resistance and 3rd resistor and signal is sent into signal processing chip, described first The both ends of electric capacity further respectively have the second electric capacity and the 3rd electric capacity;
    The signal processing chip is connected to dropout control circuit, display circuit and warning circuit;
    The test circuit includes the button switch that one end is connected to one of live wire in three-phase firewire, and the button switch is another One ends wound is connected a resistance after the transformer iron core of ZCT.
  2. 2. residual current action breaker device as claimed in claim 1, it is characterised in that:The dropout control circuit includes The controllable silicon and tripping coil of arranged in series, the tripping coil are connected to trip switch to be controlled, the signal transacting The control signal of chip inputs controllable silicon to provide Continuity signal.
  3. 3. residual current action breaker device as claimed in claim 2, it is characterised in that:The dropout control circuit takes off One diode of fastening wire circle both ends parallel connection, the negative electrode of the controllable silicon connect two diodes again a piezo-resistance in parallel so as to improving Anti-interference and controllable silicon the security performance of circuit.
  4. 4. residual current action breaker device as claimed in claim 1, it is characterised in that:Rectification circuit and the three-phase fire Anti-surge circuit is additionally provided between line, the anti-surge circuit includes three pressures being arranged between rectification circuit and three-phase firewire Quick resistance.
  5. 5. residual current action breaker device as claimed in claim 1, it is characterised in that:The display circuit shows for LED Show circuit to be shown to signal, the warning circuit is sound light alarming circuit to provide sound and light alarm signal.
CN201720891732.3U 2017-07-21 2017-07-21 residual current action breaker device Active CN206962425U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201720891732.3U CN206962425U (en) 2017-07-21 2017-07-21 residual current action breaker device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201720891732.3U CN206962425U (en) 2017-07-21 2017-07-21 residual current action breaker device

Publications (1)

Publication Number Publication Date
CN206962425U true CN206962425U (en) 2018-02-02

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ID=61382165

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201720891732.3U Active CN206962425U (en) 2017-07-21 2017-07-21 residual current action breaker device

Country Status (1)

Country Link
CN (1) CN206962425U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109901065A (en) * 2019-04-08 2019-06-18 国网福建省电力有限公司 A kind of Aftercurrent protection circuit breaker

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109901065A (en) * 2019-04-08 2019-06-18 国网福建省电力有限公司 A kind of Aftercurrent protection circuit breaker

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