CN205863908U - The switching device of residual current circuit breaker - Google Patents
The switching device of residual current circuit breaker Download PDFInfo
- Publication number
- CN205863908U CN205863908U CN201620559892.3U CN201620559892U CN205863908U CN 205863908 U CN205863908 U CN 205863908U CN 201620559892 U CN201620559892 U CN 201620559892U CN 205863908 U CN205863908 U CN 205863908U
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- circuit
- residual current
- type
- current detection
- drive circuit
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Abstract
This utility model discloses the switching device of a kind of residual current circuit breaker, performing circuit including A type residual current detection drive circuit, Type B residual current detection drive circuit, Switching Power Supply, dropout and drive switching circuit, wherein Type B residual current detection drive circuit is powered by Switching Power Supply.Drive the supply voltage of switching circuit detection Switching Power Supply.Drive switching circuit supply voltage to be detected, drive switching circuit to connect Type B residual current detection drive circuit and perform circuit with threading off, Type B residual current detection drive circuit drive execution circuit of threading off.Drive switching circuit to be not detected by supply voltage, drive switching circuit to connect A type residual current detection drive circuit and perform circuit with threading off, A type residual current detection drive circuit drive execution circuit of threading off.Can be according to whether there is cell voltage and switch between A type residual current detection drive circuit and Type B residual current detection drive circuit in this utility model, it is possible to avoids the phenomenon of false tripping.
Description
Technical field
This utility model relates to Low Voltage Electrical Apparatus, more particularly, it relates to residual current circuit breaker.
Background technology
Residual current circuit breaker is mainly used in the protection of surge current.In standard GB/T 16916.1, " domestic are with similar
Residual current action breaker without overcurrent protection (RCCB) the part 1 general rule of purposes " in 9.19.2 clause
With the standard GB/T 16917.1 " residual current action breaker (RCBO) of the band overcurrent protection of domestic and similar applications
1 part general rule " in 9.19.2 clause regulation: optional for a RCCB/RCBO pole is applied 10 surge currents, often applies
The polarity of twice conversion surge current, the time interval about 30s between double applying surge current.Surge current is by electric current
Generator produces, for 8/20us decay surge current.Allow can thread off in process of the test to GENERAL TYPE RCCB/RCBO.Full
The residual current circuit breaker of the above-mentioned standard of foot is referred to as A type/AC type residual current circuit breaker, is characterized in the course of action of chopper
Unrelated with whether there is supply voltage, dropout according to mainly judging according to electric current.
Standard GB/T 22794 " domestic and similar applications without with the F type of band overcurrent protection and Type B residue electricity
Stream action breaker " in 9.19.2 clause regulation: F type and Type B RCCB/RCBO thread off not in process of the test.GB
22794 as the supplementary provision to GB 16916.1/GB 16917.1, wherein requires difference about surge current test function,
And F type and Type B RCCB/RCBO need meeting GB 16916.1/GB 16917.1 and meeting GB 22794 simultaneously, i.e. F type and B
Type RCCB/RCBO is threaded off not in process of the test.Surge current in GB 22794 is also to be produced by current feedback circuit, for
8/20us decays surge current.
Type B residual current circuit breaker is applicable to the electrical equipment of requirement uninterrupted power supply, such as converter, armarium,
Elevator etc., these equipment are owing to using the requirement of environment, it is impossible to circut breaking arbitrarily occur.The functional coverage of Type B A type.A
In working range and functionally there is overlapping part, such as 8/ in type residual current circuit breaker and Type B residual current circuit breaker
On the surge current of 20us there is overlap in both.A type residual current action breaker can produce the most de-when surge current occurs
Button phenomenon, this kind of phenomenon is probably and randomly generates, and meets the GB of A type.Existing residual current circuit breaker in A type and
The function lap of Type B is the most substantially distinguished, therefore, when the surge current of lap occurs, such as, and 8/20us's
When surge current occurs, it is operated under Type B pattern even if residual current circuit breaker is currently, owing to A pattern formula has not had
Full isolation, above-mentioned surge current still may cause residual current circuit breaker false tripping occur.Because now residual current breaks
Road device is to be operated under Type B pattern, it should do not allow false tripping occur, so similar surge current can cause does not meets GB
Situation.If electrical equipment at this moment is converter, armarium, elevator electrical equipment, huge economic loss can be caused
Or the even security of the lives and property.
Utility model content
This utility model discloses the switching device of a kind of residual current circuit breaker, drives including A type residual current detection
Circuit, Type B residual current detection drive circuit, Switching Power Supply, dropout perform circuit and drive switching circuit, wherein Type B residue
Current detecting drive circuit is powered by Switching Power Supply.Drive the supply voltage of switching circuit detection Switching Power Supply.Drive switching electricity
Road detects supply voltage, drives switching circuit to connect Type B residual current detection drive circuit and execution circuit of threading off, by Type B
Residual current detection drive circuit drives to thread off and performs circuit.Drive switching circuit to be not detected by supply voltage, drive switching electricity
A type residual current detection drive circuit and execution circuit of threading off are connected in road, A type residual current detection drive circuit drive and thread off
Perform circuit.
In one embodiment, driving switching circuit to include switch element and bleeder circuit, bleeder circuit is connected to switch
Power supply, switch element is connected to A type residual current detection drive circuit.Switching Power Supply output supply voltage, bleeder circuit makes
Switching elements conductive, A type residual current detection drive circuit is shorted, and A type residual current detection drive circuit does not works.Switch
The non-output supply voltage of power supply, switch element is not turned on, A type residual current detection drive circuit works.
In one embodiment, bleeder circuit includes by the first divider resistance connected and the second divider resistance, first point
Piezoresistance and the second divider resistance form resistant series potentiometer.
In one embodiment, switch element is N-channel MOS FET, and the grid of N-channel MOS FET is connected to the first dividing potential drop
Between resistance and the second divider resistance, the source electrode of N-channel MOS FET and drain electrode respectively with A type residual current detection drive circuit
Positive pole and negative pole connect.Switching Power Supply output supply voltage, bleeder circuit makes N-channel MOS FET turn on, and A type residual current is examined
Survey drive circuit is shorted, and A type residual current detection drive circuit does not works, the non-output supply voltage of Switching Power Supply, dividing potential drop electricity
Road makes N-channel MOS FET be not turned on, A type residual current detection drive circuit works.
In one embodiment, driving switching circuit to include selecting element and bleeder circuit, bleeder circuit is connected to switch
Power supply, selects element to be selectively connected A type residual current detection drive circuit or Type B residual current detection drive circuit.Open
Closing power supply output supply voltage, bleeder circuit makes to select element to select to connect Type B residual current detection drive circuit and disconnect A
Type residual current detection drive circuit.The non-output supply voltage of Switching Power Supply, bleeder circuit makes to select element to select to connect A type
Residual current detection drive circuit and disconnect Type B residual current detection drive circuit.
In one embodiment, bleeder circuit includes NPN audion, the 3rd divider resistance, the 4th divider resistance and voltage stabilizing
Pipe, the base stage of NPN audion and emitter stage and the 4th divider resistance are in parallel, the base stage of NPN audion and stabilivolt and the 3rd point
Piezoresistance is connected, and NPN audion, the 3rd divider resistance, the 4th divider resistance and stabilivolt form resistant series potentiometer.
In one embodiment, selecting element is relay, and relay is dpdt relay, the input of relay
Being connected to the colelctor electrode of NPN audion, the outfan of relay is connected to thread off and performs circuit, and the normally-closed contact of relay connects
To A type residual current detection drive circuit, the normally opened contact of relay is connected to Type B residual current detection drive circuit.Switch
Power supply output supply voltage, bleeder circuit makes the normally opened contact of relay close, and normally-closed contact is opened, and Type B residual current is examined
Survey drive circuit and be switched on driving dropout execution circuit.The non-output supply voltage of Switching Power Supply, bleeder circuit makes relay
Normally-closed contact closes, and normally opened contact is opened, and A type residual current detection drive circuit is switched on driving dropout and performs circuit.
In one embodiment, A type residual current detection drive circuit is not powered by Switching Power Supply, and A type residual current is examined
Surveying drive circuit utilizes capacitor seriesing circuit or antiresonant circuit to be amplified residual current signal with output dropout letter
Number.
In one embodiment, Type B residual current detection drive circuit is powered by Switching Power Supply, Type B residual current detection
Drive circuit detection the exchange residual current of below 1kHz, pulsating direct current residual current, smooth direct current residual current, Type B remains
Current detecting drive circuit directly exports trip signal.
In one embodiment, the input of Switching Power Supply is industrial-frequency alternating current, hands over including 230V alternating current or power frequency 400V
Stream electricity.Switching Power Supply is output as positive and negative twin voltage unidirectional current, straight including+5V/-5V ,+9V/-9V or+12V/-12V twin voltage
Stream electricity.
Can be according to whether there is cell voltage and remain in A type in the switching device of residual current circuit breaker of the present utility model
Switch between current detecting drive circuit and Type B residual current detection drive circuit, get rid of the situation of overlap interference, cutting
It can be avoided that the phenomenon of false tripping when changing to Type B residual current detection drive circuit.
Accompanying drawing explanation
The above and other feature of this utility model, character and advantage by by below in conjunction with the accompanying drawings with embodiment
Describing and become apparent, the most identical reference represents identical feature all the time, wherein:
Fig. 1 discloses the structural frames of the switching device of the residual current circuit breaker according to an embodiment of the present utility model
Figure.
Fig. 2 discloses and drives switching in the switching device of the residual current circuit breaker according to an embodiment of the present utility model
The circuit diagram of circuit.
Fig. 3 discloses to drive in the switching device of the residual current circuit breaker according to another embodiment of the present utility model and cuts
Change the circuit diagram of circuit.
Detailed description of the invention
With reference to shown in Fig. 1, Fig. 1 discloses the switching dress of the residual current circuit breaker according to an embodiment of the present utility model
The structured flowchart put.The switching device of this residual current circuit breaker includes that A type residual current detection drive circuit 102, Type B are surplus
Aftercurrent detection drive circuit 104, Switching Power Supply 106, thread off execution circuit 108 and driving switching circuit 110.A type residue electricity
Stream detection drive circuit 102 is unrelated with supply voltage, and Type B residual current detection drive circuit 104 is relevant with supply voltage, Type B
Residual current detection drive circuit 104 is powered by Switching Power Supply 106.Switching circuit 110 is driven to detect the power supply electricity of Switching Power Supply
Whether pressure exists.Drive switching circuit 110 supply voltage to be detected, drive switching circuit 110 to connect Type B residual current detection and drive
Galvanic electricity road 104 and execution circuit 108 of threading off, driven dropout to perform circuit 108 by Type B residual current detection drive circuit 104.Drive
Dynamic switching circuit 110 is not detected by supply voltage, drives switching circuit 110 to connect A type residual current detection drive circuit 102 He
Thread off and perform circuit 108, A type residual current detection drive circuit 102 drive dropout to perform circuit 108.
In one embodiment, A type residual current detection drive circuit 102 is not powered by Switching Power Supply 106.A type remains
Current detecting drive circuit 102 utilizes capacitor seriesing circuit or antiresonant circuit to be amplified residual current signal with defeated
Go out trip signal.Residual current signal can be gathered by current transformer.
In one embodiment, Type B residual current detection drive circuit 104 is powered by Switching Power Supply 106.Type B residue electricity
Stream detection drive circuit 104 can detect the exchange residual current of below 1kHz, pulsating direct current residual current, smooth direct current residue electricity
Stream.Type B residual current detection drive circuit 104 can also detect exchange residual current and pulsating direct current residue electricity in the case of decompression
Stream.Type B residual current detection drive circuit 104 directly exports trip signal.
In one embodiment, the input for the Switching Power Supply 106 of Type B residual current detection drive circuitry is power frequency
Alternating current, including 230V alternating current or power frequency 400V alternating current, Switching Power Supply 106 is output as positive and negative twin voltage unidirectional current, bag
Include+5V/-5V ,+9V/-9V or+12V/-12V twin voltage unidirectional current.Compared with Switching Power Supply of the prior art, this practicality is new
The Switching Power Supply 106 of type when 400V alternating current inputs, can choose under three-phase four-wire system any one phase line and the neutral conductor or
Any two phase lines of person, as input, all can normally work.The positive negative dc voltage produced after conversion enters through voltage balancing circuit
Row balance so that it is between generating positive and negative voltage, absolute value error reduces, so so that the forward of residual current detection circuit part
Or the accuracy of detection of negative sense residual current is close.
Whether the effect driving switching circuit 110 is to exist according to supply voltage to select A type residual current detection to drive
Circuit 102 or Type B residual current detection drive circuit 104 are as the drive circuit performing circuit 108 of threading off.Drive switching electricity
The switching mode on road 110 can use electrically switching or physics switching.
Fig. 2 discloses and drives switching in the switching device of the residual current circuit breaker according to an embodiment of the present utility model
The circuit diagram of circuit.In the embodiment shown in Figure 2, switching circuit 110 is driven to use the mode of electrically switching.As it can be seen,
Driving switching circuit to include switch element and bleeder circuit, bleeder circuit is connected to Switching Power Supply, and switch element is connected to A type and remains
Aftercurrent detection drive circuit 102.Switching Power Supply output supply voltage, bleeder circuit makes switching elements conductive, A type residue electricity
Stream detection drive circuit is shorted, and A type residual current detection drive circuit does not works.When Switching Power Supply output supply voltage, B
Type residual current detection drive circuit startup work, now threads off and performs circuit by the driving of Type B residual current detection drive circuit.
The non-output supply voltage of Switching Power Supply, switch element is not turned on, A type residual current detection drive circuit works, now threads off and holds
Row circuit is driven by A type residual current detection drive circuit.Owing to Type B residual current detection drive circuit needs to rely on power supply electricity
Pressure could work, and when the non-output supply voltage of Switching Power Supply, Type B residual current detection drive circuit does not works.With reference to Fig. 2,
Bleeder circuit includes by the first divider resistance R1 connected and the second divider resistance R2, the first divider resistance R1 and the second dividing potential drop electricity
Resistance R2 forms resistant series potentiometer.It is Switching Power Supply that the two ends of resistant series potentiometer are connected respectively to VCC and GND, VCC
Positive terminal, GND is ground.Switch element Q1 is N-channel MOS FET, and the grid of N-channel MOS FET Q1 is connected to the first divider resistance
Between R1 and the second divider resistance R2, the source electrode of N-channel MOS FET Q1 and drain electrode drive electricity with A type residual current detection respectively
The positive pole on road 102 and negative pole connect.During Switching Power Supply output supply voltage, bleeder circuit produces voltage so that N-channel
MOSFET turns on, and is shorted between positive pole and the negative pole of A type residual current detection drive circuit, and A type residual current detection drives
Circuit does not works.Meanwhile, the supply voltage of Switching Power Supply output makes Type B residual current detection drive circuit works, and dropout is held
Row circuit is driven by Type B residual current detection drive circuit.The non-output supply voltage of Switching Power Supply, does not has electricity in bleeder circuit
Pressure, N-channel MOS FET is not turned on, A type residual current detection drive circuit works.Owing to Switching Power Supply does not has out-put supply electricity
Pressure, therefore Type B residual current detection drive circuit does not works, and execution circuit of threading off is driven by A type residual current detection drive circuit
Dynamic.
Fig. 3 discloses to drive in the switching device of the residual current circuit breaker according to another embodiment of the present utility model and cuts
Change the circuit diagram of circuit.In the embodiment shown in fig. 3, the mode that switching circuit 110 uses physics to switch is driven.As schemed
Showing, driving switching circuit to include selecting element and bleeder circuit, bleeder circuit is connected to Switching Power Supply, selects element optionally
Connect A type residual current detection drive circuit or Type B residual current detection drive circuit.Switching Power Supply output supply voltage, point
Volt circuit makes to select element to select to connect Type B residual current detection drive circuit and disconnect A type residual current detection and drive electricity
Road, is driven execution circuit of threading off by Type B residual current detection drive circuit.The non-output supply voltage of Switching Power Supply, bleeder circuit
Make to select element to select to connect A type residual current detection drive circuit and disconnect Type B residual current detection drive circuit, by A
Type residual current detection drive circuit drives to thread off and performs circuit.As it is shown on figure 3, bleeder circuit include NPN audion Q2, the 3rd
Divider resistance R3, the 4th divider resistance R4 and stabilivolt VR.The base stage of NPN audion Q2 and emitter stage and the 4th divider resistance R4
Parallel connection, the base stage of NPN audion Q2 is connected with stabilivolt VR and the 3rd divider resistance R3.NPN audion Q2, the 3rd divider resistance
R3, the 4th divider resistance R4 and stabilivolt VR form resistant series potentiometer.One end of 3rd divider resistance R3 is connected to VCC,
VCC is the positive pole of Switching Power Supply, and the emitter stage of NPN audion Q2 is connected to the negative pole that VSS, VSS are Switching Power Supplies.Select element
Being relay K 1, relay K 1 is dpdt relay.The input of relay K 1 is connected to the current collection of NPN audion Q2
Pole, in the illustrated embodiment, the input of relay K 1 is connected between colelctor electrode and the VCC of NPN audion Q2, and,
It is also provided with diode D between colelctor electrode and the VCC of NPN audion Q2.The outfan of relay K 1 is connected to thread off and performs
Circuit 108.The normally-closed contact of relay K 1 is connected to A type residual current detection drive circuit 102, the normally opened contact of relay K 1
It is connected to Type B residual current detection drive circuit 104.Switching Power Supply output supply voltage, bleeder circuit makes relay K 1
Normally opened contact closes, and normally-closed contact is opened, and Type B residual current detection drive circuit 104 is connected to drive thread off and performs circuit
108.Type B residual current detection drive circuit 104 starts work when there is supply voltage, and driving threads off performs circuit 108 by B
Type residual current detection drive circuit 104 drives.The non-output supply voltage of Switching Power Supply, bleeder circuit makes the normal of relay
Closed contact closes, and normally opened contact is opened, and A type residual current detection drive circuit 102 is connected to drive thread off and performs circuit
108.Owing to there is not supply voltage, Type B residual current detection drive circuit 104 does not works.A type residual current detection drives electricity
Road 102 is not need to rely on supply voltage, and therefore driving threads off performs circuit 108 by A type residual current detection drive circuit 102
Drive.
Can be according to whether there is cell voltage and remain in A type in the switching device of residual current circuit breaker of the present utility model
Switch between current detecting drive circuit and Type B residual current detection drive circuit, get rid of the situation of overlap interference, cutting
It can be avoided that the phenomenon of false tripping when changing to Type B residual current detection drive circuit.
Above-described embodiment is available to be familiar with person in the art and realizes or use of the present utility model, is familiar with ability
The personnel in territory can in the case of without departing from utility model thought of the present utility model, above-described embodiment is made various modifications or
Change, thus protection domain of the present utility model is not limited by above-described embodiment, and should be to meet claims to mention
The maximum magnitude of inventive features.
Claims (10)
1. the switching device of a residual current circuit breaker, it is characterised in that include A type residual current detection drive circuit, Type B
Residual current detection drive circuit, Switching Power Supply, dropout perform circuit and drive switching circuit, wherein Type B residual current detection
Drive circuit is powered by Switching Power Supply；
The supply voltage of described driving switching circuit detection Switching Power Supply,
Drive switching circuit supply voltage to be detected, drive switching circuit to connect Type B residual current detection drive circuit and dropout
Perform circuit, Type B residual current detection drive circuit drive execution circuit of threading off；
Drive switching circuit to be not detected by supply voltage, drive switching circuit connect A type residual current detection drive circuit and take off
Button performs circuit, A type residual current detection drive circuit drive execution circuit of threading off.
2. the switching device of residual current circuit breaker as claimed in claim 1, it is characterised in that described driving switching circuit bag
Including switch element and bleeder circuit, described bleeder circuit is connected to Switching Power Supply, and described switch element is connected to A type residual current
Detection drive circuit；
Switching Power Supply output supply voltage, bleeder circuit makes switching elements conductive, and A type residual current detection drive circuit is short
Connecing, A type residual current detection drive circuit does not works；
The non-output supply voltage of Switching Power Supply, switch element is not turned on, A type residual current detection drive circuit works.
3. the switching device of residual current circuit breaker as claimed in claim 2, it is characterised in that
Described bleeder circuit includes by the first divider resistance connected and the second divider resistance, the first divider resistance and the second dividing potential drop
Resistance forms resistant series potentiometer.
4. the switching device of residual current circuit breaker as claimed in claim 3, it is characterised in that
Described switch element is N-channel MOS FET, and the grid of N-channel MOS FET is connected to the first divider resistance and the second dividing potential drop
Between resistance, the source electrode of N-channel MOS FET and drain electrode are respectively with the positive pole of A type residual current detection drive circuit and negative pole even
Connect；
Switching Power Supply output supply voltage, bleeder circuit makes N-channel MOS FET turn on, A type residual current detection drive circuit
Being shorted, A type residual current detection drive circuit does not works, and the non-output supply voltage of Switching Power Supply, bleeder circuit makes N-channel
MOSFET is not turned on, A type residual current detection drive circuit works.
5. the switching device of residual current circuit breaker as claimed in claim 1, it is characterised in that described driving switching circuit bag
Including selection element and bleeder circuit, described bleeder circuit is connected to Switching Power Supply, and described selection element is selectively connected A type and remains
Aftercurrent detection drive circuit or Type B residual current detection drive circuit；
Switching Power Supply output supply voltage, bleeder circuit makes to select element to select to connect Type B residual current detection drive circuit
And disconnect A type residual current detection drive circuit；
The non-output supply voltage of Switching Power Supply, bleeder circuit makes to select element to select to connect A type residual current detection and drives electricity
Road and disconnect Type B residual current detection drive circuit.
6. the switching device of residual current circuit breaker as claimed in claim 5, it is characterised in that described bleeder circuit includes
NPN audion, the 3rd divider resistance, the 4th divider resistance and stabilivolt, the base stage of NPN audion and emitter stage and the 4th dividing potential drop
Resistor coupled in parallel, the base stage of NPN audion connects with stabilivolt and the 3rd divider resistance, NPN audion, the 3rd divider resistance,
Four divider resistances and stabilivolt form resistant series potentiometer.
7. the switching device of residual current circuit breaker as claimed in claim 6, it is characterised in that described selection element is relay
Device, described relay is dpdt relay, and the input of described relay is connected to the colelctor electrode of NPN audion, relay
The outfan of device is connected to thread off and performs circuit, and the normally-closed contact of relay is connected to A type residual current detection drive circuit, continues
The normally opened contact of electrical equipment is connected to Type B residual current detection drive circuit；
Switching Power Supply output supply voltage, bleeder circuit makes the normally opened contact of relay close, and normally-closed contact is opened, and Type B remains
Aftercurrent detection drive circuit is switched on driving dropout and performs circuit；
The non-output supply voltage of Switching Power Supply, bleeder circuit makes the normally-closed contact of relay close, and normally opened contact is opened, A type
Residual current detection drive circuit is switched on driving dropout and performs circuit.
8. the switching device of residual current circuit breaker as claimed in claim 1, it is characterised in that described A type residual current is examined
Surveying drive circuit not powered by described Switching Power Supply, A type residual current detection drive circuit utilizes capacitor seriesing circuit or also
Residual current signal is amplified exporting trip signal by connection resonance circuit.
9. the switching device of residual current circuit breaker as claimed in claim 1, it is characterised in that described Type B residual current is examined
Survey drive circuit to be powered by described Switching Power Supply, the exchange residue electricity of Type B residual current detection drive circuit detection below 1kHz
Stream, pulsating direct current residual current, smooth direct current residual current, Type B residual current detection drive circuit directly exports trip signal.
10. the switching device of residual current circuit breaker as claimed in claim 1, it is characterised in that
The input of described Switching Power Supply is industrial-frequency alternating current, including 230V alternating current or power frequency 400V alternating current；
Described Switching Power Supply is output as positive and negative twin voltage unidirectional current, including the double electricity of+5V/-5V ,+9V/-9V or+12V/-12V
Pressure unidirectional current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620559892.3U CN205863908U (en) | 2016-06-12 | 2016-06-12 | The switching device of residual current circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620559892.3U CN205863908U (en) | 2016-06-12 | 2016-06-12 | The switching device of residual current circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205863908U true CN205863908U (en) | 2017-01-04 |
Family
ID=57639491
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620559892.3U Withdrawn - After Issue CN205863908U (en) | 2016-06-12 | 2016-06-12 | The switching device of residual current circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205863908U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105914723A (en) * | 2016-06-12 | 2016-08-31 | 上海电科电器科技有限公司 | Switching device of residual current circuit breaker |
| WO2021160179A1 (en) * | 2020-02-13 | 2021-08-19 | 浙江正泰电器股份有限公司 | Circuit breaker |
-
2016
- 2016-06-12 CN CN201620559892.3U patent/CN205863908U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105914723A (en) * | 2016-06-12 | 2016-08-31 | 上海电科电器科技有限公司 | Switching device of residual current circuit breaker |
| WO2017215509A1 (en) * | 2016-06-12 | 2017-12-21 | 上海电科电器科技有限公司 | Switching apparatus for residual current circuit breaker |
| CN105914723B (en) * | 2016-06-12 | 2019-05-03 | 上海电科电器科技有限公司 | The switching device of residual current circuit breaker |
| WO2021160179A1 (en) * | 2020-02-13 | 2021-08-19 | 浙江正泰电器股份有限公司 | Circuit breaker |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170104 Effective date of abandoning: 20190503 |