CN206710528U - Novel breaker earth detector and low-voltage circuit breaker - Google Patents
Novel breaker earth detector and low-voltage circuit breaker Download PDFInfo
- Publication number
- CN206710528U CN206710528U CN201720436122.4U CN201720436122U CN206710528U CN 206710528 U CN206710528 U CN 206710528U CN 201720436122 U CN201720436122 U CN 201720436122U CN 206710528 U CN206710528 U CN 206710528U
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- Prior art keywords
- breaker
- signal
- leakage
- earth detector
- isolation module
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/52—Testing for short-circuits, leakage current or ground faults
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/04—Means for indicating condition of the switching device
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Breakers (AREA)
Abstract
The utility model discloses a kind of novel breaker earth detector and low-voltage circuit breaker, including signal detection module, isolation module and the zero sequence current mutual inductor through civil power inlet wire；The leakage protection circuit connection of the zero sequence current mutual inductor and breaker；The input of isolation module is connected with signal detection module, and the output end of isolation module connects civil power through zero sequence current mutual inductor；Signal detection module, for when detecting the low level detection of electrical leakage signal that breaker is sent or user triggering low level detection of electrical leakage signal when, control isolation module conducting and the output end in isolation module where loop produce test electric current；The zero sequence current mutual inductor, when testing electric current for being produced in loop where the output end of the isolation module, output leakage testses signal to leakage protection circuit.The utility model can avoid directly carrying out the problem of breaker leakage testses security is low using test button, improve safety in utilization.
Description
Technical field
It the utility model is related to field of circuit breakers, more particularly to a kind of novel breaker earth detector and low pressure open circuit
Device.
Background technology
Low-voltage circuit breaker is also known as automatic air-break switch or automatic air circuit breaker, at present, the low pressure open circuit of in the market main flow
Device typically relies on the test button triggered manually outside the low-voltage circuit breaker housing, but this examination when carrying out leak(age) test
It is direct conducting live wire and zero line after line conduction to test button, and has short circuit, therefore the use of test button again in circuit
Security is low, easily jeopardizes the life security of people.
Utility model content
Main purpose of the present utility model is to provide a kind of novel breaker earth detector and low-voltage circuit breaker, it is intended to
Solve the problems, such as that current detection of electrical leakage security is low.
To achieve the above object, the utility model proposes a kind of novel breaker earth detector, it is described new disconnected
Road device earth detector includes signal detection module, isolation module and the zero sequence current mutual inductor through civil power inlet wire；It is described
The leakage protection circuit of zero sequence current mutual inductor and breaker connects；The input of the isolation module and the signal detection mould
Block connects, and the output end of the isolation module connects civil power through the zero sequence current mutual inductor；
The signal detection module, for when detecting the low level detection of electrical leakage signal that breaker is sent or user touches
During the low level detection of electrical leakage signal of hair, the isolation module conducting and the loop where the output end of the isolation module are controlled
Produce test electric current；
The zero sequence current mutual inductor, when testing electric current for being produced in loop where the output end of the isolation module,
Leakage testses signal is exported to the leakage protection circuit.
Preferably, the isolation module is optocoupler, and the first end of the optocoupler and the second end are input, the optocoupler
3rd end and the 4th end are output end.
Preferably, the novel breaker earth detector also includes first resistor, one end of the first resistor with
The output end connection of the isolation module, the other end of the first resistor connect civil power through the zero sequence current mutual inductor.
Preferably, the first resistor and the three-terminal link of the optocoupler.
Preferably, the signal detection module includes power supply, second resistance, 3rd resistor and triggers behaviour for receiving user
Make and produce the button of low level detection of electrical leakage signal；One end of the second resistance is connected with the first end of the optocoupler, institute
The other end for stating second resistance is connected with the common port of the power supply and the 3rd resistor；The 3rd resistor and the optocoupler
The connection of the second end, the one end of the 3rd resistor also with the button be connected, and the other end of the button is grounded.
Preferably, signal of the signal detection module also with the low level detection of electrical leakage signal for sending breaker touches
Power Generation Road connects.
Preferably, the signal triggers circuit is connected by the signal detection module with the second end of the optocoupler.
Preferably, the signal detection module, it is additionally operable in zero sequence current mutual inductor output leakage testses signal extremely
After the leakage protection circuit, output detection completes signal to the signal triggers circuit.
In addition, to achieve the above object, the utility model also provides a kind of low-voltage circuit breaker, the low-voltage circuit breaker includes
The signal of novel breaker earth detector, leakage protection circuit and the low level detection of electrical leakage signal for sending breaker
Triggers circuit, the novel breaker earth detector are connected with the signal triggers circuit, the novel breaker electric leakage
Detection means is also connected with the leakage protection circuit, wherein, the novel breaker earth detector is any as described above
Novel breaker earth detector described in.
Preferably, the low-voltage circuit breaker also includes being used for the indicator lamp for showing detection of electrical leakage situation.
In technical solutions of the utility model, the signal detection module receives the low level detection of electrical leakage signal of user's triggering
Or the low level detection of electrical leakage signal that breaker is sent, control the isolation module to turn on；When isolation module turns on, it is described every
Test electric current is produced from loop where the output end of module, makes the zero sequence of backflow where through the isolation module output end
Current transformer sends leakage testses signal to the leakage protection circuit.If circuit breaker trip realizes power-off protection, leak electricity
Protection circuit is effective；If breaker does not trip, leakage protection circuit is invalid.By isolation module by user and mains isolation,
And the leakage testses signal with reference to caused by zero sequence current mutual inductor, detection of electrical leakage is realized, improves user's safety in utilization.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, drawings in the following description are only
It is some embodiments of the utility model, for those of ordinary skill in the art, is not paying the premise of creative work
Under, other accompanying drawings can also be obtained according to the structure shown in these accompanying drawings.
Fig. 1 is the structured flowchart of the embodiment of the utility model novel breaker earth detector one；
Fig. 2 is the structural representation of the embodiment of the utility model novel breaker earth detector one.
Drawing reference numeral explanation：
| Label | Title | Label | Title |
| 10 | Signal detection module | R1 | First resistor |
| 20 | Isolation module | R2 | Second resistance |
| 30 | Leakage protection circuit | R3 | 3rd resistor |
| 40 | Signal triggers circuit | U1 | Optocoupler |
| ZCT | Zero sequence current mutual inductor | S1 | Button |
| VCC | Power supply |
Realization, functional characteristics and the advantage of the utility model purpose will be described further referring to the drawings in conjunction with the embodiments.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describing, it is clear that described embodiment is only part of the embodiment of the present utility model, rather than all
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not making creative work premise
Lower obtained every other embodiment, belong to the scope of the utility model protection.
It is to be appreciated that the directional instruction (such as up, down, left, right, before and after ...) of institute in the utility model embodiment
It is only used for explaining relative position relation under a certain particular pose (as shown in drawings) between each part, motion conditions etc., such as
When the fruit particular pose changes, then directionality instruction also correspondingly changes therewith.
In addition, and it can not be managed in the utility model such as relating to the description of " first ", " second " etc. is only used for describing purpose
Solve to indicate or implying its relative importance or the implicit quantity for indicating indicated technical characteristic.Thus, define " the
One ", at least one this feature can be expressed or be implicitly included to the feature of " second ".It is " more in description of the present utility model
It is individual " it is meant that at least two, such as two, three etc., unless otherwise specifically defined.
In the utility model, unless otherwise clearly defined and limited, term " connection ", " fixation " etc. should do broad sense reason
Solution, for example, " fixation " can be fixedly connected or be detachably connected, or integrally；Can mechanically connect, also may be used
Be electrical connection；Can be joined directly together, can also be indirectly connected by intermediary, can be the connection of two element internals
Or the interaction relationship of two elements, limited unless otherwise clear and definite.For the ordinary skill in the art, can be with
Concrete meaning of the above-mentioned term in the utility model is understood as the case may be.
In addition, the technical scheme between each embodiment of the utility model can be combined with each other, but must be with ability
Domain those of ordinary skill can be implemented as basis, will be understood that when the combination appearance of technical scheme is conflicting or can not realize
The combination of this technical scheme is not present, also not within the protection domain of the requires of the utility model.
The utility model proposes a kind of novel breaker earth detector.
Fig. 1 is refer to, in the embodiment of the utility model one, the novel breaker earth detector includes signal detection
Module 10, isolation module 20 and the zero sequence current mutual inductor ZCT through civil power inlet wire；The zero sequence current mutual inductor ZCT is with breaking
The leakage protection circuit 30 of road device connects；The input of the isolation module 20 is connected with the signal detection module 10, described
The output end of isolation module 20 connects civil power through the zero sequence current mutual inductor ZCT；The signal detection module 10, for examining
When measuring the low level detection of electrical leakage signal that breaker is sent or during the low level detection of electrical leakage signal of user's triggering, described in control
Isolation module 20 turns on and the loop where the output end of the isolation module 20 produces test electric current；The zero sequence current mutual inductance
Device ZCT, when testing electric current for being produced in loop where the output end of the isolation module 20, output leakage testses signal to institute
State leakage protection circuit 30.
It should be noted that above-mentioned isolation module 20 can be configured according to being actually needed, can be by photoelectricity every
From optocoupler, can also be relay.In the present embodiment, the input due to isolation module 20 and the signal detection module
10 connections, when signal detection module 10 detects the low level detection of electrical leakage signal or the low level that sends of breaker of user's triggering
During detection of electrical leakage signal, the isolation module 20 turns on.In addition, the output end of the isolation module 20 passes through zero sequence current mutual inductance
Device ZCT connects civil power, and because isolation module 20 turns on, the zero line in loop where making photosensitive bidirectional triode thyristor and live wire open circuit are described
Loop where the output end of isolation module 20 produces test electric current, and magnetic flux is produced in zero sequence current mutual inductor ZCT annular core, former
Each phase current vectors of this zero sequence current mutual inductor ZCT change, so as to export leakage testses signal to leakage protection circuit
30.When leakage protection circuit 30 has action effect, circuit breaker tripping coil electricity will be made to adsorb dropout armature, breaker point
Lock；When leakage protection circuit 30 does not have action effect, breaker is still within "on" position, now represents leakage protection circuit
30, it may also be said to be that breaker has failure.By the voltage buffer action of isolation module 20, make by low level signal
Detect breaker function, improve user's safety in utilization, solve it is original civil power is directly turned on by test button, cause to leak
The problem of electro-detection security is low.
Further, please with reference to Fig. 2, above-mentioned isolation module 20 is optocoupler U1, the first end of the optocoupler U1 and
Two ends are input, and the 3rd end and the 4th end of the optocoupler U1 are output end.It should be noted that optocoupler U1 is using light as matchmaker
It is situated between and carrys out the device of transmitting telecommunication number, its input side is light emitting diode, and outlet side is photosensitive bidirectional triode thyristor.It is defeated as optocoupler U1
When entering to hold power up signal, light emitting diode emits beam, and photosensitive bidirectional triode thyristor just produces photoelectric current after receiving light, from defeated
Go out end outflow, it is achieved thereby that " electricity-light-electricity " is changed.Input end signal is coupled to using light as medium the optocoupler of output end
U1, there is small volume, long lifespan, contactless, strong antijamming capability, insulated between output and input, the spy of one-way transmission signal
Point.Specific in the present embodiment, low level detection of electrical leakage signal is used close to loop where the input of signal detection module 10
Loop where the output end of optocoupler can be made produces test electric current, user has been completely cut off high level, while has reached detection electric leakage
The effect of protection circuit 30.
Further, the novel breaker earth detector also includes first resistor R1, the first resistor R1's
One end is connected with the output end of the isolation module 20, and the other end of the first resistor R1 passes through the zero sequence current mutual inductor
ZCT connects civil power.Preferably, the first resistor R1 and optocoupler U1 three-terminal link.By first resistor R1 setting,
Serve the effect for preventing electric current excessive.
Further, above-mentioned signal detection module 10 includes power supply VCC, second resistance R2,3rd resistor R3 and for connecing
Receive user's trigger action and produce the button S1 of low level detection of electrical leakage signal；One end of the second resistance R2 and the optocoupler
U1 first end connection, the common port of the other end of the second resistance R2 and the power supply VCC and 3rd resistor R3 connect
Connect；The 3rd resistor R3 is connected with the second end of the optocoupler U1, the one end of the 3rd resistor R3 also with the button S1
Connection, the other end ground connection of the button S1.
Further, letter of the above-mentioned signal detection module 10 also with the low level detection of electrical leakage signal for sending breaker
Number triggers circuit 40 connects.Preferably, the signal triggers circuit 40 passes through the signal detection module 40 and the optocoupler U1
The second end connection.
Further, above-mentioned signal detection module 10, it is additionally operable to export leakage testses in the zero sequence current mutual inductor ZCT
After signal to the leakage protection circuit 30, output detection completes signal to the signal triggers circuit 40.
When user pushes button S1, button S1 receives the detection of electrical leakage signal of user's triggering, and power supply VCC passes through second
After resistance R2 partial pressures, Light-Emitting Diode, lumination of light emitting diode are turned on, photosensitive bidirectional triode thyristor is experienced light emitting diode and sent
Light after turn on, now optocoupler U1 the second end is changed into low level.While user pushes button S1, the signal triggering
Circuit 40 is in input detection state, when the second end in optocoupler U1 detects low level, then can record user and push button
Influences or result of the S1 to breaker or leakage protection circuit 30, as breaker open operation can use state " 0 " expression, breaker conjunction
Lock can use state " 1 " represent, if after user pushes button S1, breaker open operation, then signal triggers circuit by breaker point
Lock state " 0 " is recorded.When user does not push button S1, the signal triggers circuit 40 can also be output detection shape
State, low level detection of electrical leakage signal is directly exported, produce low level at optocoupler U1 the second end, make lumination of light emitting diode, light
Quick bidirectional triode thyristor conducting.In the present embodiment, double check is triggered by using the signal triggers circuit 40 of breaker or user
When mode, enhancing the diversity of product function, and specifically combining optocoupler U1 progress detection of electrical leakage, it is only necessary to use direct current low level
Leakage testses can be carried out, has isolated high-tension circuit, has enhanced safety in utilization；In addition, when using button S1, signal detection
Module 10 also exports the status information of breaker, also further helps user, terminal or Circuit management unit to know circuit rapidly
Failure.It should be noted that the output input state control of signal triggers circuit 40 and the concrete structure of signal triggers circuit can
Specifically set using prior art, be only used for the realization of circuit function herein, do not repeat one by one.
The utility model also provides a kind of low-voltage circuit breaker, and the low-voltage circuit breaker fills including novel breaker detection of electrical leakage
Put, the signal triggers circuit of leakage protection circuit and the low level detection of electrical leakage signal for sending low-voltage circuit breaker, this is new
The structure of breaker earth detector can refer to above-described embodiment, wherein, the novel breaker earth detector and institute
The connection of signal triggers circuit is stated, the novel breaker earth detector is also connected with the leakage protection circuit.Reason is answered
Locality, because the low-voltage circuit breaker of the present embodiment employs the technical scheme of above-mentioned novel breaker earth detector, therefore
The low-voltage circuit breaker has all beneficial effects of above-mentioned novel breaker earth detector.
Further, above-mentioned low-voltage circuit breaker also includes being used for the indicator lamp for showing detection of electrical leakage situation, can be specifically
Made a distinction according to the different colours of different indicator lamps or same indicator lamp, help user to be intuitively understood quickly with this disconnected
The detection of electrical leakage situation of road device.
Preferred embodiment of the present utility model is the foregoing is only, not thereby limits the scope of the claims of the present utility model,
Every equivalent structure transformation under design of the present utility model, made using the utility model specification and accompanying drawing content, or
Directly/be used in other related technical areas indirectly and be included in scope of patent protection of the present utility model.
Claims (10)
1. a kind of novel breaker earth detector, it is characterised in that the novel breaker earth detector includes letter
Number detection module, isolation module and the zero sequence current mutual inductor through civil power inlet wire；The zero sequence current mutual inductor and breaker
Leakage protection circuit connection；The input of the isolation module is connected with the signal detection module, the isolation module
Output end connects civil power through the zero sequence current mutual inductor；
The signal detection module, for when detecting the low level detection of electrical leakage signal that breaker is sent or user triggering
During low level detection of electrical leakage signal, control the isolation module to turn on and loop produces where the output end of the isolation module
Test electric current；
The zero sequence current mutual inductor, when testing electric current for being produced in loop where the output end of the isolation module, output
Leakage testses signal is to the leakage protection circuit.
2. novel breaker earth detector as claimed in claim 1, it is characterised in that the isolation module is optocoupler,
The first end of the optocoupler and the second end are input, and the 3rd end of the optocoupler and the 4th end are output end.
3. novel breaker earth detector as claimed in claim 2, it is characterised in that the novel breaker electric leakage inspection
Surveying device also includes first resistor, and one end of the first resistor is connected with the output end of the isolation module, first electricity
The other end of resistance connects civil power through the zero sequence current mutual inductor.
4. novel breaker earth detector as claimed in claim 3, it is characterised in that the first resistor and the light
The three-terminal link of coupling.
5. novel breaker earth detector as claimed in claim 3, it is characterised in that the signal detection module includes
Power supply, second resistance, 3rd resistor and for receiving user's trigger action and producing the button of low level detection of electrical leakage signal；Institute
The one end for stating second resistance is connected with the first end of the optocoupler, the other end of the second resistance and the power supply and described the
The common port connection of three resistance；The 3rd resistor is connected with the second end of the optocoupler, and the 3rd resistor is also pressed with described
One end connection of key, the other end ground connection of the button.
6. novel breaker earth detector as claimed in claim 3, it is characterised in that the signal detection module also with
For the signal triggers circuit connection for the low level detection of electrical leakage signal for sending breaker.
7. novel breaker earth detector as claimed in claim 6, it is characterised in that the signal triggers circuit passes through
The signal detection module is connected with the second end of the optocoupler.
8. novel breaker earth detector as claimed in claim 6, it is characterised in that the signal detection module, also
For after the zero sequence current mutual inductor exports leakage testses signal to the leakage protection circuit, signal to be completed in output detection
To the signal triggers circuit.
9. a kind of low-voltage circuit breaker, it is characterised in that the low-voltage circuit breaker includes novel breaker earth detector, electric leakage
The signal triggers circuit of protection circuit and the low level detection of electrical leakage signal for sending low-voltage circuit breaker, the novel breaker
Earth detector is connected with the signal triggers circuit, the novel breaker earth detector also with the earth leakage protective
Circuit connects, wherein, the novel breaker earth detector is the novel breaker as described in claim any one of 1-8
Earth detector.
10. low-voltage circuit breaker as claimed in claim 9, it is characterised in that the low-voltage circuit breaker also includes being used to show leakage
The indicator lamp of electro-detection situation.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720436122.4U CN206710528U (en) | 2017-04-24 | 2017-04-24 | Novel breaker earth detector and low-voltage circuit breaker |
| PCT/CN2018/080607 WO2018196531A1 (en) | 2017-04-24 | 2018-03-27 | Novel circuit breaker leakage detection device and low voltage circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720436122.4U CN206710528U (en) | 2017-04-24 | 2017-04-24 | Novel breaker earth detector and low-voltage circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206710528U true CN206710528U (en) | 2017-12-05 |
Family
ID=60457890
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720436122.4U Active CN206710528U (en) | 2017-04-24 | 2017-04-24 | Novel breaker earth detector and low-voltage circuit breaker |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN206710528U (en) |
| WO (1) | WO2018196531A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018196531A1 (en) * | 2017-04-24 | 2018-11-01 | 深圳曼顿科技有限公司 | Novel circuit breaker leakage detection device and low voltage circuit breaker |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9308155D0 (en) * | 1993-04-20 | 1993-06-02 | Jekyll Electronic Technology L | Portable appliance tester |
| CN201094134Y (en) * | 2007-05-29 | 2008-07-30 | 浙江正泰电器股份有限公司 | Residual current operation protector with self-diagnostic function |
| CN101900771B (en) * | 2009-05-31 | 2013-11-27 | 西门子公司 | RCD (Residual Current Device) detection device and detection method |
| CN101888082B (en) * | 2010-07-09 | 2013-05-01 | 上海诺雅克电气有限公司 | Residual current protector |
| CN104422830B (en) * | 2013-08-27 | 2019-03-29 | 施耐德电器工业公司 | Earth leakage protective device and creepage protection function detection method |
| CN103487750A (en) * | 2013-09-18 | 2014-01-01 | 德力西电气有限公司 | Testing circuit capable of detecting residual current operated circuit breaker in remote mode |
| CN206710528U (en) * | 2017-04-24 | 2017-12-05 | 深圳曼顿科技有限公司 | Novel breaker earth detector and low-voltage circuit breaker |
-
2017
- 2017-04-24 CN CN201720436122.4U patent/CN206710528U/en active Active
-
2018
- 2018-03-27 WO PCT/CN2018/080607 patent/WO2018196531A1/en active Application Filing
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018196531A1 (en) * | 2017-04-24 | 2018-11-01 | 深圳曼顿科技有限公司 | Novel circuit breaker leakage detection device and low voltage circuit breaker |
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| Publication number | Publication date |
|---|---|
| WO2018196531A1 (en) | 2018-11-01 |
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