CN205622203U - With electric detection means and electric jointing equipment - Google Patents
With electric detection means and electric jointing equipment Download PDFInfo
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- CN205622203U CN205622203U CN201620335689.8U CN201620335689U CN205622203U CN 205622203 U CN205622203 U CN 205622203U CN 201620335689 U CN201620335689 U CN 201620335689U CN 205622203 U CN205622203 U CN 205622203U
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Abstract
The utility model relates to a with electric detection means and an electric jointing equipment, should include with electric detection means: self -checking pulse unit for when electricity produces the pulse trigger signal on with electric detection means, the self -checking unit for periodically produce simulation electric leakage signal, and be used for the basis the pulse trigger signal produces simulation electric leakage signal, and electricity leakage fault detecting element, be used for detecting simulation electric leakage signal and real electricity leakage fault. The utility model discloses an increase self -checking pulse unit, just directly trigger the self -checking unit during electricity and inspect the trouble with electric detection means self on with electric detection means to carrying out periodic self -checking yet, the self -checking unit avoid taking place harm user security's the condition before. Furthermore, the utility model discloses an increase the discharge cell for self checking circuit does not carry out the self -checking under the under -voltage condition, and avoided missing the phenomenon of threading off.
Description
Technical field
This utility model relates to domestic circuit field, in particular it relates to one electro-detection fills
Put and a kind of electric connecting device.
Background technology
Along with improving constantly of people's living standard is the most general with what electric equipment products used
And, the use safety of electrical equipment is the most increasingly paid attention to by people.Thus with leak current fault detection electricity
The earth detector on road arises at the historic moment.Use in electric detection means current, it is common that the cycle
Property ground carry out self-inspection to electric detection means itself.
But, this periodic self-inspection can cause needing after earth detector powers on
Treat that a cycle just carries out self-inspection.And harm user security may be had occurred and that in this period
Situation.
Additionally, current does not has discharge circuit with electric detection means.Therefore, (low in low-voltage
In product rated voltage or lower) time, it may appear that false tripping phenomenon.
Therefore, need badly a kind of there is power-on self-test function and under-voltage discharging function use electro-detection
Device.
Utility model content
Owing to current can not detect leak current fault inspection immediately with electric detection means when powering on
Slowdown monitoring circuit functional, can not avoid the false tripping phenomenon in the case of deficient electricity, in order to solve
These technical problems, this utility model provides one electric detection means and has this and use electric-examination
Survey the electric connecting device of device.
For achieving the above object, first aspect of the present utility model provides one electro-detection
Device, including: self-inspection pulse unit, for producing arteries and veins when described electric detection means powers on
Punching triggers signal；Self-test unit, for periodically producing simulation electric leakage signal, and is used for
Described simulation electric leakage signal is produced according to described pulse triggering signal；And leak current fault detection is single
Unit, is used for detecting described simulation electric leakage signal and real leak current fault.By the way,
Simulation leakage can be directly produced with electric detection means when powering on by using self-inspection pulse unit
The signal of telecommunication, thus avoid causing due to the fault of leak current fault detector unit within the period 1
Danger Electric shock risk.
According in a kind of embodiment of electric detection means of the present utility model, described from
Inspection unit includes: reference voltage generates subelement, is used for generating reference voltage；Periodic voltage is raw
Becoming subelement, for generating the voltage of mechanical periodicity, the voltage of described mechanical periodicity is in described week
The different phase of phase is respectively greater than and less than described reference voltage；Comparator, for the most described
Reference voltage and the voltage of described mechanical periodicity；And the first transistor, for according to described ratio
Result relatively produces described simulation electric leakage signal.In this way, self-test unit can the cycle
Property ground generate simulation electric leakage signal.
According in a kind of embodiment of electric detection means of the present utility model, described arteries and veins
It is trigger voltage that punching triggers signal, and described self-inspection pulse unit includes: transistor seconds, is used for
Turn on when described electric detection means powers on, to provide described trigger voltage；And second electricity
Container, for disconnecting described transistor seconds after the predetermined charging interval；Wherein, institute
State comparator to be additionally operable to, when described transistor seconds turns on, relatively described reference voltage and institute
State trigger voltage.In this way, it is possible to adjusted by the parameter adjusting the second capacitor
Charging interval.
According in a kind of embodiment of electric detection means of the present utility model, described arteries and veins
It is trigger voltage that punching triggers signal, and described self-inspection pulse unit includes: transistor seconds, is used for
Turn on when described electric detection means powers on, to provide trigger voltage；And peaker,
For disconnecting described transistor seconds after predetermined derivative time；Wherein, described comparison
Device is additionally operable to, when described transistor seconds turns on, and relatively described reference voltage and described triggering
Voltage.In this way, it is possible to when adjusting differential by the parameter adjusting peaker
Between.
According in a kind of embodiment of electric detection means of the present utility model, described arteries and veins
Punching triggers signal and is used for dragging down described reference voltage, and described self-inspection pulse unit includes: second is brilliant
Body pipe, for turning on when described electric detection means powers on, to drag down described reference voltage；
And peaker, for disconnecting described transistor seconds after predetermined derivative time.
According in a kind of embodiment of electric detection means of the present utility model, described week
Phase voltage generates the first resistance and the first capacitor that subelement includes being connected in series.
According in a kind of embodiment of electric detection means of the present utility model, by adjusting
Whole described first resistance adjusts the described cycle with the parameter of described first capacitor.
According in a kind of embodiment of electric detection means of the present utility model, described
Two-transistor is audion, diode or controllable silicon.
According in a kind of embodiment of electric detection means of the present utility model, described use
Electric detection means also includes: discharge cell, for being less than voltage pre-set value at supply voltage
In the case of forbid described self-test unit produce described simulation electric leakage signal.By the way, put
Electric unit makes self-test unit not work in the case of under-voltage.
According in a kind of embodiment of electric detection means of the present utility model, described in put
Electric unit includes third transistor, for being less than described voltage pre-set value at described supply voltage
In the case of, the outfan of described periodic voltage generation subelement is connected to the ground and connects, so that
The voltage of described mechanical periodicity is zero.
According in a kind of embodiment of electric detection means of the present utility model, described leakage
Electric fault detector unit also includes Fisrt fault display unit, and described Fisrt fault display unit is used
In showing described leak current fault.In this way, it is possible to clearly to user and attendant
The leak current fault of indicating circuit.
According in a kind of embodiment of electric detection means of the present utility model, described from
Inspection unit also includes that the second fault display unit, described second fault display unit are used for showing institute
State by the fault of electric detection means.In this way, it is possible to clearly to user and safeguard people
The fault of member's instruction electric detection means.
Additionally, second aspect of the present utility model provides a kind of electric connecting device, it has
According to electric detection means described in the utility model.
To sum up, this utility model is by increasing self-inspection pulse unit, with on electric detection means
The self-test unit inspection fault of electric detection means self is the most directly triggered during electricity, thus in self-inspection
Unit avoids the situation of occurrence injury user security before also not carrying out periodically self-inspection.Additionally,
This utility model is by increasing discharge cell so that self-checking circuit is not carried out certainly under undervoltage condition
Inspection, and avoid false tripping phenomenon.
Accompanying drawing explanation
The detailed description to non-limiting example made with reference to the following drawings by reading,
Other features, objects and advantages of the present utility model will become more apparent upon, wherein:
Fig. 1 shows the electricity of the first embodiment according to electric detection means of the present utility model
Line structure schematic diagram；
Fig. 2 shows the electricity of the second embodiment according to electric detection means of the present utility model
Line structure schematic diagram；
Fig. 3 shows the electricity of the 3rd embodiment according to electric detection means of the present utility model
Line structure schematic diagram；And
Fig. 4 shows the electricity of the 4th embodiment according to electric detection means of the present utility model
Line structure schematic diagram.
Detailed description of the invention
In the specific descriptions of following preferred embodiment, will be with reference to constituting this utility model one
The appended accompanying drawing of part.Appended accompanying drawing has been illustrated by way of example and has been capable of this reality
By novel specific embodiment.The embodiment of example is not intended as limit according to this utility model
All embodiments.It is appreciated that on the premise of without departing from scope of the present utility model, can
To utilize other embodiments, it is also possible to carry out the structural or amendment of logicality.Therefore, with
Under specific descriptions nonrestrictive, and scope of the present utility model is by appended claim
It is defined.
Fig. 1 shows the electricity of the first embodiment according to electric detection means of the present utility model
Line structure schematic diagram.
As it is shown in figure 1, include with electric detection means: (1) self-inspection pulse unit 1, it is used for
Pulse triggering signal is produced with electric detection means when powering on；(2) self-test unit, it is used for
Periodically produce simulation electric leakage signal, and for producing simulation according to pulse triggering signal
Electric leakage signal；And (3) leak current fault detector unit, it is used for detecting simulation electric leakage signal
With real leak current fault.
Leak current fault detector unit includes: detection coil ZCT1, solenoid SOL, controllable silicon
The elements such as element Q1, diode D5 and processor IC1.It is understood that controllable silicon
Element Q1 also is able to replace with other element possessing switching function, such as metal-oxide-semiconductor.
Self-test unit includes: reference voltage generates subelement, periodic voltage generates subelement, ratio
Relatively device IC2 and the first transistor Q2.Wherein, reference voltage generation subelement is used for giving birth to
Become reference voltage；Periodic voltage generates subelement for generating the voltage of mechanical periodicity, this cycle
The voltage of the change different phase in the cycle is respectively greater than and less than reference voltage；Comparator, uses
In comparison reference voltage and the voltage of mechanical periodicity；And the first transistor, for according to comparing
Result produce simulation electric leakage signal.In FIG, reference voltage generate subelement by R7 and
The bleeder circuit that R8 is constituted is formed.Periodic voltage generates subelement by resistance R9 and electric capacity C10
Formed.Simulation electric leakage signal is the leakage current more than electric leakage threshold value on zero line N.
Self-inspection pulse unit 1 includes: transistor seconds Q3, electric capacity C6, diode D9 and
Multiple resistance R16, R17 and R18.It is understood that transistor seconds Q3 can be
Other possess switch or select the element of function, such as diode, amplifier, comparison circuit etc..
The two ends of detection coil ZCT1 are coupled to the pin 4 and 5 of processor IC1, work as ZCT1
When the change in voltage of output is more than threshold value, the pin 1 of IC1 exports high level, otherwise, and output
Low level.Rectifier bridge D1-D4 is respectively coupled to live wire L, N line, and by resistance R1 coupling
It is connected to the pin 3 of IC1, all can provide work electricity for IC1 with the positive-negative half-cycle at alternating voltage
Source.
After reset switch RESET resets, L, N supply lines will power on, at L line and N
Ac power waveform between line is sinusoidal wave.
Separately below to leak current fault detector unit, self-test unit and the work of self-inspection pulse unit 1
It is illustrated as situation.
(1) detection leak current fault
When RESET closes, whether ZCT1 detection L, N line there is leakage current to produce.
If now not having leakage current to produce, then IC1 is at pin 1 output low level, controllable silicon
Q1 cannot turn on, thus the electric current in solenoid SOL will not produce change, from without making
RESET must be switched disconnect.
If now there being leakage current to produce, then ZCT output induced voltage is to the pin 4,5 of IC1
After, IC1 exports high level at pin 1, thus turns on controllable silicon Q1.Now, solenoid
Electric current in SOL will produce bigger change because of silicon controlled conducting so that RESET
Disconnect, and then cut off L line to the current path of N line.
When supply access keeps power supply state, i.e. electric current in solenoid does not produces because of controllable silicon
During the bigger change of electric current that Q1 causes, it is coupled to solenoidal Fisrt fault display unit (bag
Include resistance R4 and LED 1) display signal will be sent, to inform user always
Now RESET switch Guan Bi.After controllable silicon Q1 turns on, reset switch RESET will break
Opening, now Fisrt fault display unit will no longer be shown, thus informs user's now supply access
Already off.It addition, when solenoid SOL damage, the i.e. coil of SOL define open circuit,
Now Fisrt fault display unit the most no longer shows.
For self-test unit, owing to it is not the most powered by N line, therefore it does not works.
(2) circuitry self test
Be similar to, when RESET all closes, ZCT detection L, N line on whether have leakage
Electric current produces.
Self-test unit includes that periodic voltage generates subelement, and this periodic voltage generates subelement and includes
The the first resistance R9 being connected in series and the first electric capacity C10, periodic voltage generates subelement also coupling
It is connected to the first input end (positive pole) of thyristor Q1 and comparator IC2.Obviously, when
During controllable silicon Q1 conducting, it can provide the path of the charge discharging resisting on the first electric capacity C10,
Thus reduce the voltage of the first electric capacity C10.
The positive pole of comparator is coupled between the first resistance R9 and the first electric capacity C10, is used for connecing
Receiving the voltage signal on electric capacity C10, the negative pole of comparator is coupled to include resistance R7, R8
Reference voltage generates subelement, is used for receiving reference voltage signal.Therefore, periodic voltage generates
Subelement and reference voltage generate subelement and all receive from the voltage signal on N line
Situation 1: leak current fault detector unit is working properly:
Due to the first resistance R9 on IC2 positive pole and the first electric capacity C10 by resistance R5 even
Receive N line, therefore, charged to electric capacity C10 by the resistance R9 being connected on IC2 positive pole.
When the voltage on C10 is higher than voltage (i.e. the negative pole of IC2) on R7, the output of IC2
End will invert, and high level occurs in IC2 outfan.
The outfan of IC2 is coupled to the base stage of the first transistor Q2 by resistance R11, therefore,
The once outfan output high level of IC2, Q2 just turns on, and then pull down resistor R13 and Q2
Between current potential, Q2 conducting time then depend on IC2 outfan high level maintain
Time.The conducting of Q2, introduces pre-set value electric current Ic to ZCT1, it is clear that electric current Ic
Should be greater than or detect equal to leak current fault threshold value I of electric currentf, otherwise IC1 cannot would correspond to electricity
The output signal of the ZCT of stream Ic is identified as effective electric leakage signal.Therefore, first crystal is passed through
Pipe Q2 and resistance R13 introduces the leakage current for ZCT1 detection, from the emitter stage warp of Q2
D2 in rectifier bridge flow to L line, to form current loop.
Output signal based on ZCT1 for electric current Ic, IC1, the high electricity of output on pin 1
Ordinary mail number, so that controllable silicon Q1 conducting.Now, Q1 turns on then diode D6 also general
Conducting, owing to the positive pole of diode D6 with electric capacity C10 and IC2 is connected, therefore electric capacity C10
To be discharged by diode D6, controllable silicon Q1 so that the cathode voltage of IC2 drops rapidly
Low, and then cause IC2 outfan to be reversed to low level.
When IC2 positive pole level is less than negative electricity at ordinary times, the outfan output low level of IC2, the
One transistor Q2 disconnects.Now, owing to stopping to ZCT1 offer electric current, (i.e. electric current Ic is also
Do not produce), ZCT1 is not detected by leakage current, therefore, the control of the pin 1 and Q1 of IC1
Extremely zero level, it is known that, when leak current fault detector unit is working properly, controllable silicon Q1's
The current potential on electric capacity C10 is depended in conducting.Owing on electric capacity C10, electric charge is released, its electricity
Pressure also will decline, thus be unable to reach the threshold value electricity of controllable silicon Q1 and/or diode D6 conducting
Pressure, therefore, controllable silicon Q1 now will be switched off.
When leak current fault detector unit is working properly and preset current value IfWhen not changing,
Then repeat process as above, and continue as electric capacity C10 charging.Can by change C10 with
The parameter of R9 adjusts the length in detection cycle, and this detection cycle can be ac period
Integral multiple.
Situation 2: the work of leak current fault detector unit is abnormal
Now, leak current fault detector unit breaks down or preset current value IfBecome big, such as
Electric capacity open circuit, IC1 damage etc. cause leak current fault detector unit to lose earth leakage protective ability, or
It it is preset current value IfBecome the leakage current Ic causing greatly self-test unit to produce less than If, now,
The pin 1 of IC1 is by output low level, i.e. Q1 is not turned on.Now, electric capacity C10 is not put
Circuit, thus cause the current potential of electric capacity C10 to be consistently higher than the negative pole end of IC2, i.e. comparator IC2
Outfan persistently export high level, so Q2 turns on all the time, LED2 persistently lights, with
Prompting this earth leakage protective device of user can not be continuing with.
If now controllable silicon Q1, diode D6 and D7 the most do not damage, then comparator
IC2 will be charged to electric capacity C11 by resistance R12, when current potential reaches setting value, and diode
D7 conducting, Q1 conducting.Owing to now comparator IC2 will persistently export high level, therefore,
The electric current moment made in solenoid SOL is increased by the conducting of controllable silicon Q1, thus disconnects multiple
Bit switch RESET, is i.e. disconnected input electrically connected with export, promotes user not use.
(3) circuit power-on self-test
Although by self-test unit described above have been able to circuit is carried out periodic from
Inspection.If but time of arranging from the overhaul period is longer, longer time after powering on first
Interior all without carrying out self-inspection.Thus it still remains a need self-inspection pulse unit 1 enters the most at once
Row self-inspection.
When just powering on electric detection means, transistor seconds Q3 turns on, and resistance R17 leads to
Crossing transistor seconds Q3 to charge electric capacity C10, charging voltage reaches the benchmark of comparator IC2
During pre-set value, comparator IC2 output self-inspection pulse makes Q2 turn on, Q2 turn on to
The electric leakage signal of ZCT1 mono-simulation, IC1 exports one and drives signal, drives controllable silicon unit
Part Q1 turns on, and diode D6 is also switched on simultaneously, the voltage quilt on electric capacity C10 after D6 conducting
Moment bleeds off, and IC2 stops conducting and completes self-inspection for the first time.In the process, simultaneously by electricity
Electric capacity C6 is charged by resistance R16, then transistor seconds Q3 base potential raises thus causes it
Turn off.As device normally works, then self-inspection pulse unit 1 no longer works.Self-inspection afterwards by
Resistance R9 and electric capacity C10 completes.
Preferably, also including with electric detection means: (4) discharge cell, it is at power supply
Voltage is less than forbidding in the case of voltage pre-set value that self-test unit produces simulation electric leakage signal.As
Shown in Fig. 1, discharge cell includes diode D8, electric capacity C12 and resistance R14, R15.
When high load LOAD electricity consumption due to electric current bigger voltage meeting step-down, or due to
When shutting down and cause voltage straight line to decline, the voltage at diode D8 two ends can be caused to change,
If D8 cathode voltage is less than setting value, then D8 conducting, and the voltage instantaneous on electric capacity C10
Reduce, thus stop IC2 can not send self-test signal.And when normally working, D8 positive pole
Voltage ratio electric capacity C10 at voltage high, thus D8 is not turned on.
Fig. 2 shows the electricity of the second embodiment according to electric detection means of the present utility model
Line structure schematic diagram.Fig. 2 Yu Fig. 1 differs only in use by electric capacity C6 and resistance R19
The peaker constituted disconnects transistor seconds Q3.
Specifically, self-inspection pulse unit 1 includes: transistor seconds Q3, peaker C6
With R19, diode D10 and multiple resistance R16, R17, R18.When just powering on, C6,
R19 differential makes transistor seconds Q3 turn on, and diode D10 surpasses to the voltage of comparator IC2
When crossing benchmark pre-set value, IC2 exports a self-inspection pulse, makes Q2 turn on, Q2 turn on to
The electric leakage signal of ZCT1 mono-simulation, IC1 output drives the signal of controllable silicon Q1, completes one
Secondary self-inspection.After C6, R19 differential, Q3 disconnects.As device normally works, then self-inspection pulse
Unit 1 no longer works.Self-inspection afterwards is completed by resistance R9 and electric capacity C10.
Fig. 3 shows the electricity of the 3rd embodiment according to electric detection means of the present utility model
Line structure schematic diagram.Fig. 3 with Fig. 2 differs only in, and the conducting of transistor seconds Q3 is
For dragging down the voltage of second input (negative pole) of comparator IC2.
Specifically, self-inspection pulse unit 1 includes: transistor seconds Q3, peaker C6
With R19 and resistance R16.When just powering on, C6, R19 differential makes transistor seconds Q3
Conducting, this can drag down the voltage of negative input of comparator IC2, thus IC2 exports once
Self-inspection pulse, makes Q2 turn on, and Q2 turns on to the electric leakage signal of ZCT1 mono-simulation, IC1
Output drives the signal of controllable silicon Q1, completes a self-inspection.After C6, R19 differential, Q3
Disconnect.As device normally works, then self-inspection pulse unit 1 no longer works.Self-inspection afterwards by
Resistance R9 and electric capacity C10 completes.
Fig. 4 shows the electricity of the 4th embodiment according to electric detection means of the present utility model
Line structure schematic diagram.
As shown in Figure 4, self-inspection pulse unit 1 includes: transistor seconds Q3, peaker
C6 and R19 and resistance R10, R11.When just powering on, C6, R19 differential makes the second crystalline substance
Body pipe Q3 turns on, and Q3 conducting can make the first transistor Q2 turn on, and Q2 turns on to ZCT1
The electric leakage signal of one simulation, IC1 output drives the signal of controllable silicon Q1, completes once certainly
Inspection.After C6, R19 differential, Q3 disconnects.As device normally works, then self-inspection pulse unit 1
No longer work.Self-inspection afterwards is completed by resistance R9 and electric capacity C10.
Although the foregoing describe detailed description of the invention of the present utility model, but in this area
Technical staff can make various changes and modifications within the scope of the appended claims.
Claims (13)
1. one kind with electric detection means, it is characterised in that including:
Self-inspection pulse unit, for producing pulse-triggered letter when described electric detection means powers on
Number；
Self-test unit, for periodically producing simulation electric leakage signal, and for according to described
Pulse triggering signal produces described simulation electric leakage signal；And
Leak current fault detector unit, is used for detecting described simulation electric leakage signal and event of leaking electricity really
Barrier.
Electric detection means the most according to claim 1, it is characterised in that described self-inspection
Unit includes:
Reference voltage generates subelement, is used for generating reference voltage；
Periodic voltage generates subelement, for generating the voltage of mechanical periodicity, described mechanical periodicity
The voltage different phase in the described cycle be respectively greater than and less than described reference voltage；
Comparator, for relatively described reference voltage and the voltage of described mechanical periodicity；And
The first transistor, for producing described simulation electric leakage signal according to described result of the comparison.
Electric detection means the most according to claim 2, it is characterised in that described pulse
Triggering signal is trigger voltage, and described self-inspection pulse unit includes:
Transistor seconds, for turning on when described electric detection means powers on, to provide described
Trigger voltage；And
Second capacitor, for disconnecting described second crystal after the predetermined charging interval
Pipe；
Wherein, described comparator is additionally operable to, when described transistor seconds turns on, the most described
Reference voltage and described trigger voltage.
Electric detection means the most according to claim 2, it is characterised in that described pulse
Triggering signal is trigger voltage, and described self-inspection pulse unit includes:
Transistor seconds, for turning on when described electric detection means powers on, to provide triggering
Voltage；And
Peaker, for disconnecting described transistor seconds after predetermined derivative time；
Wherein, described comparator is additionally operable to, when described transistor seconds turns on, the most described
Reference voltage and described trigger voltage.
Electric detection means the most according to claim 2, it is characterised in that described pulse
Triggering signal and be used for dragging down described reference voltage, described self-inspection pulse unit includes:
Transistor seconds, for turning on when described electric detection means powers on, described to drag down
Reference voltage；And
Peaker, for disconnecting described transistor seconds after predetermined derivative time.
Electric detection means the most according to claim 2, it is characterised in that described cycle
Voltage generates the first resistance and the first capacitor that subelement includes being connected in series.
Electric detection means the most according to claim 6, it is characterised in that by adjusting
Whole described first resistance adjusts the described cycle with the parameter of described first capacitor.
8., according to the use electric detection means according to any one of claim 3 to 5, its feature exists
In, described transistor seconds is audion, diode or controllable silicon.
Electric detection means the most according to claim 2, it is characterised in that described electricity consumption
Detection device also includes:
Discharge cell, forbids described in the case of at supply voltage less than voltage pre-set value
Self-test unit produces described simulation electric leakage signal.
Electric detection means the most according to claim 9, it is characterised in that described in put
Electric unit includes third transistor, for being less than described voltage pre-set value at described supply voltage
In the case of, the outfan of described periodic voltage generation subelement is connected to the ground and connects, so that
The voltage of described mechanical periodicity is zero.
11. electric detection means according to claim 1, it is characterised in that described leakage
Electric fault detector unit also includes Fisrt fault display unit, and described Fisrt fault display unit is used
In showing described leak current fault.
12. electric detection means according to claim 1, it is characterised in that described from
Inspection unit also includes that the second fault display unit, described second fault display unit are used for showing institute
State by the fault of electric detection means.
13. 1 kinds of electric connecting devices, it is characterised in that have according to claim 1 to 12
According to any one of use electric detection means.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620335689.8U CN205622203U (en) | 2016-04-20 | 2016-04-20 | With electric detection means and electric jointing equipment |
| US15/151,801 US9535106B2 (en) | 2015-02-04 | 2016-05-11 | Leakage current detection device for appliances |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620335689.8U CN205622203U (en) | 2016-04-20 | 2016-04-20 | With electric detection means and electric jointing equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205622203U true CN205622203U (en) | 2016-10-05 |
Family
ID=57027773
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620335689.8U Withdrawn - After Issue CN205622203U (en) | 2015-02-04 | 2016-04-20 | With electric detection means and electric jointing equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205622203U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107305230A (en) * | 2016-04-20 | 2017-10-31 | 益而益(集团)有限公司 | Use electric detection means |
| CN113659519A (en) * | 2021-05-21 | 2021-11-16 | 上海蕴原电器有限公司 | Failure automatic monitoring circuit and ground fault circuit breaker using same |
-
2016
- 2016-04-20 CN CN201620335689.8U patent/CN205622203U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107305230A (en) * | 2016-04-20 | 2017-10-31 | 益而益(集团)有限公司 | Use electric detection means |
| CN107305230B (en) * | 2016-04-20 | 2023-05-19 | 益而益(集团)有限公司 | Electricity consumption detection device |
| CN113659519A (en) * | 2021-05-21 | 2021-11-16 | 上海蕴原电器有限公司 | Failure automatic monitoring circuit and ground fault circuit breaker using same |
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