CN207353823U - Ground-fault interrupter - Google Patents
Ground-fault interrupter Download PDFInfo
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- CN207353823U CN207353823U CN201721476818.6U CN201721476818U CN207353823U CN 207353823 U CN207353823 U CN 207353823U CN 201721476818 U CN201721476818 U CN 201721476818U CN 207353823 U CN207353823 U CN 207353823U
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Abstract
The utility model discloses a kind of ground-fault interrupter, it includes switch module, Earth Fault Detection module, selftest module and dropout module.Wherein, the switch module is coupled between input terminal and output terminal, electrically connected between the input terminal and the output terminal to control；The Earth Fault Detection module detects the output terminal and whether there is leakage current signal；The selftest module is couple to the Earth Fault Detection module and periodically produces the self-test pulse signal for being used for simulating the leakage current signal；And the dropout module couples are to the Earth Fault Detection module and the switch module, to control the switch module to act.The utility model devises at least two dropout driving parts for ground-fault interrupter, avoid dropout module therein when working long hours under the high temperature conditions to break down and cause ground-fault interrupter to be stopped, and then greatly improve the security of ground-fault interrupter.
Description
Technical field
It the utility model is related to domestic circuit field, more particularly to a kind of ground-fault interrupter.
Background technology
With becoming increasingly popular for household electrical appliance, people increasingly pay attention to the safe to use of household electrical appliance.At present, though people
Ground-fault interrupter so is installed in power grid output terminal or in the input terminal of some household electrical appliance, improves the use of household electrical appliance
Electric security.But in use, because the factor such as using for a long time, though people ground-fault interrupter has been carried out in use from
The operation such as inspection, the defects of due to ground-fault interrupter internal structure in the prior art, although causing ground-fault interrupter to be examined
Measure electrical leakage problems, but due to ground-fault interrupter internal drive failure and cannot timely deenergization, earth fault
Breaker loses earth leakage protective possibility during still having use, so as to cause the situation of danger to occur.It is and existing
The ground-fault interrupter with self-checking function in technology can only prompt the user with ground connection event by way of indicator light, sound
Hinder breaker there are failure, and there are failure for that can not identify ground-fault interrupter by modes such as indicator light, sound
For personnel, personal injury is be easy to cause using above-mentioned ground-fault interrupter, there are security risk.
Therefore, there is an urgent need for a kind of ground connection event of convenient installation, economic benefit significantly with self-checking function, multiple protection functions
Hinder breaker.
Utility model content
In view of the above-mentioned problems, the utility model proposes a kind of ground-fault interrupter with multiple protection functions, into
And lift Product Safety, reliability.
On the one hand the utility model proposes a kind of ground-fault interrupter, it includes：Switch module, Earth Fault Detection
Module, selftest module and dropout module.The switch module is coupled between input terminal and output terminal, and the switch module is used
It is electrically connected between the input terminal and the output terminal in controlling；The Earth Fault Detection module detects the output terminal
With the presence or absence of leakage current signal；The selftest module, which is couple to the Earth Fault Detection module and periodically produces, to be used for
Simulate the self-test pulse signal of the leakage current signal；The dropout module couples are to the Earth Fault Detection module and institute
Switch module is stated, wherein the dropout module includes：At least two dropout driving parts, it is according to the Earth Fault Detection mould
The leakage current signal that block detects is electrically connected to control the switch module to disconnect.
In one embodiment, at least two dropouts driving part is connected in parallel, each dropout drive division
Part includes the semiconductor element for being couple to the Earth Fault Detection module and the trip line with semiconductor element coupling
Circle；When detecting the leakage current signal, the Earth Fault Detection module turns at least one semiconductor element and comes
The corresponding tripping coil action of control, it is electrically connected to drive the switch module to disconnect.
In one embodiment, the dropout module includes：Trip gear and at least two semiconductor elements；It is described de-
Buckle device is equipped with least two tripping coils；Each semiconductor element is respectively coupled at least two trip line
Circle, and each semiconductor element is additionally coupled to the Earth Fault Detection module so that each semiconductor element
The corresponding dropout driving part is formed with each tripping coil, wherein：It is described to connect when detecting leakage current signal
It is electrically connected to drive the switch module to disconnect that earth fault detection module turns at least one semiconductor element.
In one embodiment, the semiconductor element includes any in the elements such as silicon-controlled, metal-oxide-semiconductor, triode
It is a kind of.
In one embodiment, the selftest module includes the cycle timing circuit and self-test pulse signal being mutually coupled
Circuit, the cycle timing circuit are used for the interval for controlling the self-test pulse signal circuit to produce self-test pulse signal.
In one embodiment, the self-test pulse signal circuit includes switching tube, point with switching tube coupling
A reference source is flowed, the cycle timing circuit is couple to the shunt reference source to control the switching tube to produce the self-test pulse
Signal.
In one embodiment, the self-test pulse signal circuit includes switching tube, the ratio with switching tube coupling
Compared with device, the cycle timing circuit is couple to the comparator to control the switching tube to produce the self-test pulse signal.
In one embodiment, the selftest module further includes power module, and the power module is used for for described in certainly
Examine pulse signal circuit and/or cycle timing circuit power supply；When the power module is only the self-test pulse signal electricity
When road powers, the cycle timing circuit is couple to detection of electrical leakage ring to take electricity by cycle timing pulsafeeder.
In one embodiment, the Earth Fault Detection module includes：Detection of electrical leakage ring, detection of electrical leakage unit；Institute
State phase line and the neutral conductor of the detection of electrical leakage ring for detecting the output terminal and whether there is leakage current signal；The detection of electrical leakage list
Member is respectively coupled to the detection of electrical leakage ring, the dropout module, when the detection of electrical leakage unit is examined by detecting the electric leakage
When surveying ring and producing the leakage current signal, it is electrically connected to drive the switch module to disconnect to control the dropout module.
The utility model is added to thread off including at least two compared with the prior art in ground-fault interrupter and driven
The dropout module of component, selftest module, periodically automatic in ground-fault interrupter work can not only detect electric leakage guarantor
Protective function, be supplied to user to indicate accordingly, additionally it is possible to when detecting that failure deposits during ground-fault interrupter works
When, when a dropout mould dropout driving part in the block breaks down cisco unity malfunction, another dropout drive division
Part can disconnect electrically connected between input terminal and output terminal in time, it is ensured that the normal work of ground-fault interrupter, so that
Greatly improve security, the reliability of circuit.
Brief description of the drawings
Refer to the attached drawing shows and illustrates embodiment.These attached drawings be used for illustrate basic principle so that illustrate only for
Understand the necessary aspect of basic principle.These attached drawings are not in proportion.In the accompanying drawings, identical reference numeral represents similar
Feature.
Fig. 1 shows the electrical block diagram according to the utility model first embodiment；
Fig. 2 shows the electrical block diagram according to the utility model second embodiment；
Fig. 3 shows the electrical block diagram according to the utility model 3rd embodiment；
Fig. 4 shows the electrical block diagram according to the utility model fourth embodiment；
Fig. 5 shows the electrical block diagram according to the 5th embodiment of the utility model；
Fig. 6 shows the electrical block diagram according to the utility model sixth embodiment.
Embodiment
In the specific descriptions of following preferred embodiment, by with reference to forming the appended attached of the utility model part
Figure.The specific embodiment that can realize the utility model has been illustrated by way of example in appended attached drawing.Exemplary reality
Apply example and be not intended as limit all embodiments according to the present utility model.It is appreciated that without departing from the scope of the utility model
On the premise of, other embodiment can be utilized, structural or logicality modification can also be carried out.Therefore, it is following specific
Describe and nonrestrictive, and the scope of the utility model is defined by the claims appended hereto.
The utility model is directed to a kind of ground-fault interrupter, which can realize in use
Self-test is carried out, when any one dropout driving part of the dropout module in ground-fault interrupter inside breaks down, is connect
Earth fault breaker remains able to work normally.Based on the design, the ground-fault interrupter of the utility model includes：Switching molding
Whether block, Earth Fault Detection module, selftest module and dropout module, deposited by Earth Fault Detection module detection output
In earth fault；Detect whether Earth Fault Detection module works normally by selftest module in use；When ground connection event
Dropout module drive switch module disconnects electrically connected so as to cut off the power when barrier detection module detects earth fault；Work as dropout
When mould any one dropout driving part in the block breaks down, another or multiple dropout driving parts remain able to normally
Working control switch module action.
Fig. 1 shows the electrical block diagram of the ground-fault interrupter according to the utility model first embodiment.Such as
Shown in Fig. 1, ground-fault interrupter in the first embodiment includes input terminal LINE and output terminal LOAD, for control input
Electrically connected switch module 4, selftest module 1 between the LINE and output terminal LOAD of end, dropout module 2, Earth Fault Detection
Module 3.Wherein, Earth Fault Detection module 3 whether there is leakage current signal for detection input LINE and output terminal LOAD,
Specifically the phase line (L) of detection output LOAD and the neutral conductor (N) whether there is leakage current signal.Selftest module 1 is used to detect
Whether Earth Fault Detection module 3 works normally.When Earth Fault Detection module 3 detects leakage current signal, control is threaded off
2 driving switch module 4 of module disconnects electrically connected so as to cut off the power, and realizes the protection to circuit.
The first embodiment of the utility model according to figure 1, concrete operating principle are as follows：
In the present embodiment, Earth Fault Detection module 3 includes the detection of electrical leakage ring through phase line (L) and the neutral conductor (N)
ZCT1 and to detection of electrical leakage ring ZCT1 coupling detection of electrical leakage unit (it include detection of electrical leakage chip U1 and its it is related couple
Electronic component).When the phase line (L) through detection of electrical leakage ring ZCT1 and the neutral conductor (N) are there are during current imbalance, i.e. presence is leaked
During current signal, corresponding voltage signal will be produced on detection of electrical leakage ring ZCT1, then detection of electrical leakage chip U1 is by detecting Lou
Corresponding voltage change is produced on electro-detection ring ZCT1, to control 2 driving switch module 4 of dropout module to disconnect.
In the present embodiment, dropout module 2 includes the dropout driving part 21,22 being connected in parallel, driving part of each threading off
Including be couple to Earth Fault Detection module 3, selftest module 1 semiconductor element (silicon-controlled Q1 or Q4) and with it is silicon-controlled
The tripping coil (SOL1 or SOL2) of (Q1 or Q4) coupling.Produced when detection of electrical leakage chip U1 is detected on detection of electrical leakage ring ZCT1
When corresponding voltage change reaches pre-set value, silicon-controlled Q1, Q4 can be caused to turn on.When Q1, Q4 are turned on, tripping coil
SOL1, SOL2 will produce larger curent change, and then disconnect switch module 4.In actual use, when silicon-controlled Q1 or dropout
Coil SOL1 breaks down (for example, silicon-controlled Q1 cathodes and/or anode open circuit, tripping coil SOL1 open circuits etc.) and silicon-controlled
When Q4, tripping coil SOL2 are still worked normally, detect in detection of electrical leakage chip U1 and produced accordingly on detection of electrical leakage ring ZCT1
Voltage change when, silicon-controlled Q4, tripping coil SOL2 regular event, be disconnected switch module 4 so that ground-fault interrupter
Disconnect electrically connected；Vice versa.
In the present embodiment, selftest module 1 is used to periodically check 3 function of earth fault detection module.From
Examining module 1 includes power circuit, cycle timing circuit and the self-test pulse signal circuit for simulating leakage current signal.Referring to Fig. 1,
Power circuit includes resistance R5, voltage-stabiliser tube ZD1 and capacitance C3；Cycle timing circuit includes resistance R9 and the timing being connected in series
Element (for example, capacitance C4) is used for the interval for producing self-test pulse signal；Self-test pulse signal circuit includes switching tube (triode
Q2), comparator U2, diode D2, capacitance C5, resistance R10 and the emitter, base stage and the current collection that are respectively coupled to triode Q2
The electronic components such as resistance R11, R13 of pole.After ground-fault interrupter work, selftest module 1 was to detection of electrical leakage ring ZCT1 weeks
Apply to phase property the simulation leakage current signal for reaching estimated definite value.
Specifically, resistance R5, voltage-stabiliser tube ZD1 and capacitance C3 for comparator U2 provide working power (comparator U2's
Pin 5), the offer reference voltage (pin 3 of comparator U2) that resistance R7, R8 partial pressure from working power are comparator U2, leads to
Cross resistance R9 from working power to capacitance C4 charge produce self-test pulse signal interval be input to comparator U2 (comparator U2's
Pin 1), when voltage rises to reference potential on capacitance C4, comparator U2 (pin 4 of comparator U2) output signals, and then drive
Dynamic triode Q2 conductings, then self-test pulse signal is produced to detection of electrical leakage ring ZCT1 by resistance R13.
When selftest module 1 detects Earth Fault Detection module 3 there occurs failure, i.e. detection of electrical leakage chip U1 can not make can
Silicon Q1 conductings are controlled, then capacitance C4 does not have discharge circuit, so as to cause selftest module 1 (pin 4 of comparator U2) persistently to export
High level, then charged by resistance R10 to capacitance C5, and when current potential reaches setting value, diode D2 is turned on, then silicon-controlled Q1
And/or silicon-controlled Q4 conductings, then so that tripping coil SOL1 and/or tripping coil SOL2 is acted, and then controlling switch module 4 is disconnected
Open electrically connected.In actual use, when silicon-controlled Q1 or tripping coil SOL1 break down (for example, silicon-controlled Q1 cathodes and/
Or anode open circuit, tripping coil SOL1 open circuit when) and silicon-controlled Q4 or tripping coil SOL2 still work normally when, in comparator
U2 detects that Earth Fault Detection module 3, will production on tripping coil SOL2 there occurs silicon-controlled Q4 during failure, can be controlled to turn on
Raw larger curent change, is disconnected switch module 4；Vice versa.
In conclusion the present embodiment is realized under ground-fault interrupter normal operating conditions by selftest module 1, the cycle
Property automatic detection creepage protection function it is whether normal, when Earth Fault Detection module 3 breaks down, by controlling dropout mould
Block driving switch module disconnects output power supply.And/or when Earth Fault Detection module 3 detects the presence of leakage current signal, lead to
Cross control dropout module drive switch module and disconnect output power supply.And work as dropout mould any one dropout driving part in the block
When (21 or 22) break down, the normal work of another dropout driving part (22 or 21) is not influenced so that earth fault
Breaker can disconnect output power supply.
The second embodiment of the utility model according to Fig. 2, concrete operating principle are as follows：
Compared to Fig. 1, the structure of the dropout module 2 in Fig. 2 is changed：Set two respectively on trip gear F
Coil, forms tripping coil SOL1, tripping coil SOL2；The anode of wherein silicon-controlled Q1 respectively with two tripping coil couplings
Connect, while the anode of silicon-controlled Q4 is also coupled with two tripping coils respectively；And the control pole of silicon-controlled Q1, silicon-controlled Q4's
Control pole is coupled with Earth Fault Detection module 3, selftest module 1；That is, silicon-controlled Q1 and tripping coil SOL1, silicon-controlled Q1
Formed respectively with tripping coil SOL2, silicon-controlled Q4 and tripping coil SOL1 and silicon-controlled Q4 and tripping coil SOL2 corresponding
Dropout driving part.Therefore, when Earth Fault Detection module 3 detects that leakage current signal and/or selftest module 1 detect ground connection
When fault detection module 3 breaks down, can control silicon-controlled Q1 and/or silicon-controlled Q4 control tripping coil SOL1 and/or
Tripping coil SOL2 driving switch module 4 disconnect it is electrically connected, so as to cut off the power.In addition, work as silicon-controlled Q1 or silicon-controlled Q4
When breaking down, do not influence another silicon-controlled Q4 or silicon-controlled Q1 and normally control tripping coil SOL1 and/or tripping coil
SOL2 driving switch module 4 disconnects electrically connected；Or when tripping coil SOL1 or tripping coil SOL2 breaks down, not
Influence silicon-controlled Q1 and/or silicon-controlled Q4 control tripping coil SOL2 or tripping coil SOL1 drivens switch module 4 disconnects
It is electrically connected；Or when one in silicon-controlled Q1 and silicon-controlled Q4 breaks down, and tripping coil SOL2 and tripping coil
One in SOL1 when breaking down, silicon-controlled and tripping coil of another normal work can be with work in combination so as to driving out
It is electrically connected to close RESET disconnections.
In conclusion in the present embodiment, there is more flexible, relatively reliable dropout module compared to first embodiment,
When one in the block of dropout mould is silicon-controlled and/or a tripping coil breaks down, the normal use of dropout module is not influenced,
And then substantially increase availability, flexibility, reliability and the security of ground-fault interrupter disclosed in the utility model.
Also, the selftest module 1 in Fig. 1, Fig. 2 disclosed embodiment can be deposited detecting Earth Fault Detection module 3
2 driving switch module 4 of dropout module is controlled to disconnect in failure electrically connected, easy to identify earth fault by indicator light
Breaker there are failure personnel safety using with the ground-fault interrupter electric appliance.
Fig. 3 shows the circuit theory schematic diagram of the ground-fault interrupter of 3rd embodiment according to the present utility model.
As shown in figure 3, selftest module 1 includes power circuit, cycle timing circuit and the self-test for simulating leakage current signal
Pulse signal circuit.Referring to Fig. 3, power circuit includes resistance R5, voltage-stabiliser tube ZD1 and capacitance C3；Self-test pulse signal circuit
Including switching tube (triode Q2), shunt reference source U2, resistance R12 and capacitance C5.It is different from Fig. 1：Cycle timing circuit bag
Include the interval of the resistance R8 being connected in series and timing element (for example, capacitance C4) for producing self-test pulse signal, and resistance
R8 connects with resistance R7, and voltage-stabiliser tube ZD2 is connected in parallel between the node between resistance R7, R8 and ground potential, so as to shunt base
The REF terminal voltages of quasi- source U2 are limited to less than the voltage stabilizing value equal to voltage-stabiliser tube ZD2.Wherein, power circuit is triode Q2, divides
Flow a reference source U2 and working power is provided；Resistance R7, voltage-stabiliser tube ZD2 form cycle timing pulsafeeder, by being couple to electric leakage inspection
Surveying ring ZCT1 takes electricity to power for cycle timing circuit.
1 operation principle of selftest module in the 3rd embodiment is as follows：When Earth Fault Detection module 3 works normally,
After ground-fault interrupter resets, the voltage on capacitance C4 is zero, therefore the REF ends of shunt reference source U2 are less than reference voltage
2.5V, then the triode in shunt reference source U2 be off, shunt reference source U2 can not be turned on.Cycle timing pulsation electricity
Capacitance C4 is charged by resistance R8 in source, when the voltage on capacitance C4 fills up to more than 2.5V, three in shunt reference source U2
Pole pipe turns on, so that the triode Q2 that base stage has positive bias-voltage is turned on, self-test pulse letter is produced on detection of electrical leakage ring ZCT1
Number, after detection of electrical leakage chip U1 detects the self-test pulse signal, silicon-controlled Q3 will be driven to turn on, then capacitance C4 can be by can
Control silicon Q3 discharges.Specifically, when self-test output of pulse signal, the silicon-controlled Q1, Q4 of detection of electrical leakage chip U1 output drivings,
The signal of Q3, drives silicon-controlled Q3 to turn on by resistance R12, capacitance C5, so that capacitance C4 discharges, starts next self-test
Cycle.While silicon-controlled Q3 is driven, close self-test pulse signal, capacitance C1, C6 be delayed so that be not turned on silicon-controlled Q1,
Q4, then tripping coil SOL1, SOL2 does not form current loop, therefore switch module 4 still closes.If detect lasting generation
Leak electricity letter flow number, and silicon-controlled Q3 is turned on so that self-test pulse signal circuit does not produce self-test pulse signal, then silicon-controlled Q1, Q4 are led
It is logical so that tripping coil SOL1, SOL2 form current loop so that driving switch module 4 disconnect it is electrically connected.
When Earth Fault Detection module 3 breaks down, when self-test output of pulse signal, detection of electrical leakage chip U1 can not
The signal of output driving silicon-controlled Q1, Q4, Q3 so that capacitance C4 can not be driven by resistance R12, capacitance C5 it is silicon-controlled
Q3 is turned on and discharged.Since the voltage on capacitance C4 maintains high potential, then shunt reference source U2 is constantly on so that luminous two
Pole pipe LED2 is always on, and thus informs that there are failure for user's ground-fault interrupter.It should be understood that in this embodiment, if connecing
Earth fault detection module 3 is working properly, and Light-emitting diode LED 2 can flicker.
Similarly, if without Light-emitting diode LED 2, when one in the block of dropout mould silicon-controlled (Q1 or Q4) in Fig. 3
And/or a tripping coil (SOL1 or SOL2) does not influence the normal use of dropout module when breaking down.
Fig. 4 shows the principle schematic of the ground-fault interrupter of fourth embodiment according to the present utility model.In Fig. 4
Selftest module 1 operation principle is identical with Fig. 3, the operation principle of dropout module 2 is identical with Fig. 2, details are not described herein.
Fig. 5 shows the circuit theory schematic diagram of the ground-fault interrupter of the 5th embodiment according to the present utility model.
As shown in figure 5, with Fig. 1 difference lies in：Earth Fault Detection module 3 includes detection of electrical leakage ring ZCT1, the neutral conductor
Detect ring ZCT2, detection of electrical leakage module (it includes the associated electronic components such as detection of electrical leakage chip U1, resistance R3, R2) and rectification
Bridge D1-D4.Wherein, detection of electrical leakage ring ZCT1 is used to detect phase line (L) and the neutral conductor (N) whether there is earth fault, the neutral conductor
Detection ring ZCT2 is used to detect the neutral conductor and ground wire whether there is earth fault.Rectifier bridge D1-D4 is respectively coupled to phase line with
Property line, and detection of electrical leakage chip U1 (pin 6 of detection of electrical leakage chip U1) is couple to by resistance R1, so as to be detection of electrical leakage core
Piece U1 provides working power.Detection of electrical leakage chip U1 is coupled with detection of electrical leakage ring ZCT1, neutral conductor detection ring ZCT2 respectively, with inspection
Survey two kinds of earth faults (by the output detection of pin 5 signal of detection of electrical leakage chip U1).
The operation principle of the selftest module 1 of Fig. 5 is identical with the operation principle of the selftest module 1 of Fig. 1, and the dropout of Fig. 5
The operation principle of module 2 is identical with the operation principle of the dropout module 2 of Fig. 1, so repeating the self-test in the embodiment not at this
The operation principle of module 1, dropout module 2.
Fig. 6 shows the circuit theory schematic diagram of the ground-fault interrupter of sixth embodiment according to the present utility model.
In the sixth embodiment, the operation principle of Earth Fault Detection module 3 and the operation principle of Fig. 5 Earth Fault Detections module 3
Identical, selftest module 1 operation principle is identical with the operation principle of the selftest module 1 of Fig. 1, the operation principle of dropout module 2 with
The operation principle of the dropout module 2 of Fig. 2 is identical, and compared to Fig. 1-Fig. 5 the disclosed embodiments, sixth embodiment can either detect
The phase line and neutral conductor, the neutral conductor and ground wire whether there is earth fault, also can be in any one or more in dropout module 2
The dropout driving part for not influencing to work normally when dropout driving part breaks down works, therefore sixth embodiment has
There are reliability, the security of higher.
To sum up, ground-fault interrupter disclosed in the utility model has self-checking function, while break in earth fault
When breaking down during the device long-term work of road due to its some internal or some dropout driving parts, earth fault is not still influenced
The normal use of breaker, while the side such as indicator light, auto-cutout can be passed through during ground-fault interrupter self-test
Formula notifies user to be continuing with the ground-fault interrupter, is used easy to various crowds, particularly convenient for can not pass through instruction
Lamp identify ground-fault interrupter there are failure personnel safety, reliably use, final realize can effectively realize pair
The safe handling of electric appliance.
Therefore, although describing the utility model with reference to specific example, wherein these specific examples are merely intended to
It is exemplary, rather than the utility model is limited, but it is obvious to those skilled in the art
It is that on the basis of the spirit and scope of the utility model is not departed from, the disclosed embodiments can be changed, increased
Add or delete.
Claims (9)
- A kind of 1. ground-fault interrupter, it is characterised in that including：Switch module, it is coupled between input terminal and output terminal, and the switch module is used to control the input terminal and described It is electrically connected between output terminal；Earth Fault Detection module, it detects the output terminal and whether there is leakage current signal；Selftest module, it, which is couple to the Earth Fault Detection module and periodically produces, is used to simulate the leakage current letter Number self-test pulse signal；AndDropout module, it is couple to the Earth Fault Detection module and the switch module, wherein the dropout module includes：At least two dropout driving parts, it is controlled according to the leakage current signal that the Earth Fault Detection module detects It is electrically connected to make the switch module disconnection.
- 2. ground-fault interrupter as claimed in claim 1, it is characterised in that at least two dropouts driving part is in parallel Connection, each dropout driving part include the semiconductor element for being couple to the Earth Fault Detection module and with institute State the tripping coil of semiconductor element coupling；When detecting the leakage current signal, the Earth Fault Detection module conducting At least one semiconductor element controls the corresponding tripping coil action, to drive the switch module to disconnect electric power Connection.
- 3. ground-fault interrupter as claimed in claim 1, it is characterised in that the dropout module includes：Trip gear, which is provided with least two tripping coils；At least two semiconductor elements, each semiconductor element are respectively coupled at least two tripping coil, and Each semiconductor element is additionally coupled to the Earth Fault Detection module so that each semiconductor element and each institute State tripping coil and form the corresponding dropout driving part, wherein：When detecting leakage current signal, the Earth Fault Detection module turns at least one semiconductor element to drive The switch module disconnects electrically connected.
- 4. ground-fault interrupter as claimed in claim 2 or claim 3, it is characterised in that the semiconductor element include it is silicon-controlled, Any one of metal-oxide-semiconductor, triode.
- 5. ground-fault interrupter as claimed in claim 1, it is characterised in that the selftest module includes the week being mutually coupled Phase timing circuit and self-test pulse signal circuit, the cycle timing circuit are used to control the self-test pulse signal circuit to produce The interval of self-test pulse signal.
- 6. ground-fault interrupter as claimed in claim 5, it is characterised in that the self-test pulse signal circuit includes switch Pipe, the shunt reference source with switching tube coupling, the cycle timing circuit are couple to the shunt reference source to control State switching tube and produce the self-test pulse signal.
- 7. ground-fault interrupter as claimed in claim 5, it is characterised in that the self-test pulse signal circuit includes switch Pipe, the comparator with switching tube coupling, the cycle timing circuit are couple to the comparator to control the switching tube Produce the self-test pulse signal.
- 8. ground-fault interrupter as claimed in claim 5, it is characterised in that the selftest module further includes power module, The power module is used to power for the self-test pulse signal circuit and/or the cycle timing circuit；When the power supply mould When block is only the self-test pulse signal circuit power supply, the cycle timing circuit is couple to Lou by cycle timing pulsafeeder Electro-detection ring is to take electricity.
- 9. ground-fault interrupter as claimed in claim 1, it is characterised in that the Earth Fault Detection module includes：Detection of electrical leakage ring, its phase line for being used to detect the output terminal and the neutral conductor whether there is leakage current signal；Detection of electrical leakage unit, it is respectively coupled to the detection of electrical leakage ring, the dropout module, when the detection of electrical leakage unit leads to Cross when detecting the detection of electrical leakage ring and producing the leakage current signal, control the dropout module to drive the switch module Disconnect electrically connected.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721476818.6U CN207353823U (en) | 2017-11-08 | 2017-11-08 | Ground-fault interrupter |
| US15/819,353 US10615588B2 (en) | 2016-07-13 | 2017-11-21 | Ground fault circuit interrupter |
| US15/878,242 US10571526B2 (en) | 2016-07-13 | 2018-01-23 | Ground fault circuit interrupter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721476818.6U CN207353823U (en) | 2017-11-08 | 2017-11-08 | Ground-fault interrupter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207353823U true CN207353823U (en) | 2018-05-11 |
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ID=62354109
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721476818.6U Active CN207353823U (en) | 2016-07-13 | 2017-11-08 | Ground-fault interrupter |
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| Country | Link |
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| CN (1) | CN207353823U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109755921A (en) * | 2017-11-08 | 2019-05-14 | 苏州益而益电器制造有限公司 | ground fault circuit breaker |
| CN111371064A (en) * | 2020-04-14 | 2020-07-03 | 浙江中讯电子有限公司 | A leakage protection circuit with self-test function |
-
2017
- 2017-11-08 CN CN201721476818.6U patent/CN207353823U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109755921A (en) * | 2017-11-08 | 2019-05-14 | 苏州益而益电器制造有限公司 | ground fault circuit breaker |
| CN111371064A (en) * | 2020-04-14 | 2020-07-03 | 浙江中讯电子有限公司 | A leakage protection circuit with self-test function |
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