CN206907722U - Air switch - Google Patents
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- CN206907722U CN206907722U CN201720155160.2U CN201720155160U CN206907722U CN 206907722 U CN206907722 U CN 206907722U CN 201720155160 U CN201720155160 U CN 201720155160U CN 206907722 U CN206907722 U CN 206907722U
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- 238000010891 electric arc Methods 0.000 claims abstract description 108
- 238000001514 detection method Methods 0.000 claims abstract description 74
- 238000007493 shaping process Methods 0.000 claims description 18
- 230000005611 electricity Effects 0.000 claims description 13
- 238000001914 filtration Methods 0.000 claims description 11
- 238000004891 communication Methods 0.000 claims description 10
- 238000012360 testing method Methods 0.000 claims description 8
- 239000000284 extract Substances 0.000 claims description 4
- 238000007689 inspection Methods 0.000 claims description 2
- 241000208340 Araliaceae Species 0.000 claims 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 claims 1
- 235000003140 Panax quinquefolius Nutrition 0.000 claims 1
- 235000008434 ginseng Nutrition 0.000 claims 1
- 238000000034 method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000004888 barrier function Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000005070 sampling Methods 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 238000013528 artificial neural network Methods 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005670 electromagnetic radiation Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
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- 230000001960 triggered effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The utility model discloses a kind of air switch, it is related to electrical safety fire-fighting domain, wherein, air switch includes fault electric arc detection module, main control module and trip action execution module, and main control module electrically connects with fault electric arc detection module and trip action execution module respectively；Wherein, fault electric arc detection module sends fault-signal after fault electric arc is included in detecting present load circuit to main control module；Main control module sends dropout control signal after judging to need to carry out trip operation according to fault-signal, to trip action execution module；Trip action execution module performs action by what dropout control signal was converted to magnet coil, to complete trip operation.Therefore, air switch of the present utility model is capable of detecting when fault electric arc, and trip operation is carried out after fault electric arc is detected, so as to protect the safety of load circuit.
Description
Technical field
It the utility model is related to electrical safety fire-fighting domain, more particularly to a kind of air switch.
Background technology
Air switch is one kind of breaker, and major function is once electric current will be from dynamic circuit breaker more than rated current in circuit
Switch, so as to protect follow-up power network.But existing air switch is to overvoltage/undervoltage, fault electric arc etc. without detection and defencive function.
Wherein, electric arc is consumed across a kind of electric discharge phenomena of certain medium for example air, electric arc between two electrodes
The electric energy that falls while the energy modes such as light, sound, heat energy, electromagnetic radiation are converted into, arc center's temperature is at least 1000 DEG C, pole
15000 DEG C are even more than in the case of end.General arc discharge refers in particular to the breakdown air between two electrodes for having voltage difference and produced
Raw electric discharge phenomena.
Among existing electric loop, there is point of so-called normal arc and fault electric arc, wherein normal arc is divided again
For single electric arc and cycle electric arc.Single electric arc is mainly produced by contactor acts, and is characterized in time of origin at random, no
Continuously, typically only produced in one or several alternating current half-waves, the gross energy of single electric arc particularly generates total amount of heat ratio
It is smaller and be it is controllable will not trigger disastrous consequence, to this single electric arc, should be handled not as harmful electric arc.
Cycle electric arc refers to some electrical equipments for carrying out work by arc discharge, for example arc welding, electric arc furnaces, arc discharge lamp etc. or
The electrical equipment worked under high speed periodic switch state, for example internal electric hand drill, impact drill, the electric hammer for carrying brush motor
Deng electric arc caused by electrical equipment, this kind of electric arc is also in controllable state, will not trigger disastrous consequence.For this electric arc
Also harmful electric arc is should not be taken as to handle, otherwise otherwise these electrical equipments can not normal work by the power-off of mistakenly protectiveness
Make, otherwise it is unprotected after fault electric arc will be generated among electric loop.
Harmful electric arc, which typically results from insulating barrier aging, external impacts or mouse among electric loop, the insulating barrier such as gnaws and breaks
Damage, electrical connection loosening, electrical fitting corrosion, electric parts damage, external conductive debris enter.Caused by these failures
Electric arc occurs have very strong randomness and harmfulness, light and heat carbonization insulating barrier caused by electric arc, it is conductive to melt even gasification
Metal, more aggravate the generation of short circuit accident.Among the electric circumstance of no protection, the fire incident that fault electric arc is triggered accounts for
More than the 40% of electrical fire, it is especially more terrified in some inflammable and explosive occasions, the catastrophic failure of initiation.Therefore in electricity
The detection of installation fault electric arc is highly desirable with protection device among gas equipment.
But often profile is special for existing fault electric arc detection equipment, and volume is excessive, it is difficult to directly replace existing air
Switch or earth leakage circuit-breaker.
Utility model content
A technical problem to be solved in the utility model is to provide a kind of air that can support that fault electric arc detects and opened
Close.
According to the utility model on the one hand, propose a kind of air switch, including fault electric arc detection module, main control module and
Trip action execution module, main control module electrically connect with fault electric arc detection module and trip action execution module respectively；Wherein,
Fault electric arc detection module sends fault-signal after fault electric arc is included in detecting present load circuit to main control module；It is main
Control module sends control letter of threading off to trip action execution module after judging to need to carry out trip operation according to fault-signal
Number；Trip action execution module performs action by what dropout control signal was converted to magnet coil, to complete trip operation.
Further, fault electric arc detection module includes high-pass filtering shaping circuit and detection and analysis circuit, high-pass filtering
The output end of shaping circuit is connected with testing and analyzing the input of circuit；Wherein, high-pass filtering shaping circuit extraction load circuit
The high frequency signal of middle electric current, and high frequency signal is sent to detection and analysis circuit；Circuit is tested and analyzed according to high frequency
Component signal obtains the scale parameter of electric current, in the case where scale parameter is more than yardstick threshold value, determines to include in load circuit
Fault electric arc.
Further, fault electric arc detection module also includes LPF shaping circuit, LPF shaping circuit it is defeated
Go out end and be connected with testing and analyzing the input of circuit；Wherein, LPF shaping circuit extracts the low frequency of electric current in load circuit
Component signal, circuit is tested and analyzed in the case where the scale parameter of the low frequency component signal of electric current is more than yardstick threshold value, it is determined that
Fault electric arc in load circuit is standard failure electric arc.
Further, fault electric arc detection module also includes signal output apparatus, signal output apparatus and main control module electricity
Connection；Wherein, in the case that fault electric arc of the signal output apparatus in load circuit meets preassigned fault electric arc, to master
Control module and send fault-signal.
Further, the air switch also includes the overvoltage/undervoltage detection module electrically connected with main control module；Wherein, overvoltage/undervoltage
Detection module is sent out after detecting present load circuit input voltage higher than overvoltage threshold or less than brownout threshold to main control module
Pass through under-voltage signal；Main control module performs mould after judging to need to carry out trip operation according to overvoltage/undervoltage signal, to trip action
Block sends dropout control signal.
Further, the air switch also includes the over-current detection module electrically connected with main control module；Wherein, over-current detection
Module sends over-current signal after the electric current for detecting present load circuit is higher than excessively stream threshold value, to main control module；Main control module
After judging to need to carry out trip operation according to over-current signal, dropout control signal is sent to trip action execution module.
Further, the air switch also includes the detection of electrical leakage module electrically connected with main control module；Wherein, detection of electrical leakage
Module sends electric leakage signal after the electric leakage of present load circuit is detected, to main control module；Main control module is according to electric leakage signal
Judgement is needed after carrying out trip operation, and dropout control signal is sent to trip action execution module.
Further, the air switch also includes the excess temperature detection module electrically connected with main control module；Wherein, excess temperature detects
Module sends excess temperature signal after detecting that present air switch internal temperature is higher than excess temperature threshold value, to main control module；Master control mould
Block sends dropout control signal after judging to need to carry out trip operation according to excess temperature signal, to trip action execution module.
Further, the air switch also includes the communication module electrically connected with main control module；Wherein, communication module will be main
The status information of signal and present load circuit received by control unit is sent to network side equipment by communication.
Further, communication uses WIFI or Zigbee protocol.
Further, air switch is 1P air switches, 2P air switches, 3P air switches or 4P air switches.
Compared with prior art, it is in the utility model air switch fault electric arc detection module detection present load circuit
It is no to include fault electric arc, in the case of including fault electric arc in present load circuit, fault-signal is sent to main control module；It is main
Control module sends control of threading off in the case where judging to need to carry out trip operation according to fault-signal, to trip action execution module
Signal processed；Trip action execution module performs action by what dropout control signal was converted to magnet coil, to complete the behaviour that threads off
Make.Therefore, air switch of the present utility model is capable of detecting when fault electric arc, and dropout behaviour is carried out after fault electric arc is detected
Make, so as to protect the safety of load circuit.
It is of the present utility model other by referring to the drawings to the detailed description of exemplary embodiment of the present utility model
Feature and its advantage will be made apparent from.
Brief description of the drawings
The accompanying drawing of a part for constitution instruction describes embodiment of the present utility model, and uses together with the description
In explanation principle of the present utility model.
Referring to the drawings, according to following detailed description, the utility model can be more clearly understood, wherein：
Figure 1A is the structural representation of one embodiment of the utility model air switch.
Figure 1B is the structural representation of one embodiment of fault electric arc detection module in the utility model air switch.
Fig. 2 is the structural representation of another embodiment of the utility model air switch.
Fig. 3 A are the product design form schematic diagram of the utility model 1P air switches.
Fig. 3 B are the product design form schematic diagram of the utility model 2P air switches.
Fig. 3 C are the product design form schematic diagram of the utility model 3P air switches.
Fig. 3 D are the product design form schematic diagram of the utility model 3P air switches.
Embodiment
Various exemplary embodiments of the present utility model are described in detail now with reference to accompanying drawing.It should be noted that：It is unless another
Illustrate outside, the part and the positioned opposite of step, numerical expression and numerical value otherwise illustrated in these embodiments is unlimited
The scope of the utility model processed.
Simultaneously, it should be appreciated that for the ease of description, the size of the various pieces shown in accompanying drawing is not according to reality
Proportionate relationship draw.
The description only actually at least one exemplary embodiment is illustrative to be never used as to this practicality below
New and its application or any restrictions used.
It may be not discussed in detail for technology, method and apparatus known to person of ordinary skill in the relevant, but suitable
In the case of, the technology, method and apparatus should be considered as authorizing part for specification.
In shown here and discussion all examples, any occurrence should be construed as merely exemplary, without
It is as limitation.Therefore, the other examples of exemplary embodiment can have different values.
It should be noted that：Similar label and letter represents similar terms in following accompanying drawing, therefore, once a certain Xiang Yi
It is defined, then it need not be further discussed in subsequent accompanying drawing in individual accompanying drawing.
For the purpose of this utility model, technical scheme and advantage is more clearly understood, below in conjunction with specific embodiment, and
Referring to the drawings, the utility model is further described.
Figure 1A is the structural representation of one embodiment of the utility model air switch.The air switch includes failure electricity
Arc detection module 110, main control module 120 and trip action execution module 130, main control module 120 detect with fault electric arc respectively
Module 110 and trip action execution module 130 electrically connect, fault electric arc detection module 110 can include filtering shaping circuit and
Circuit is tested and analyzed, main control module 120 and trip action execution module 130 can be by being PLC, integrated circuit, associated components
Deng the specific hardware unit of composition.Wherein：
Fault electric arc detection module 110 is used for detecting in present load circuit whether include fault electric arc, in present load
In the case of including fault electric arc in circuit, fault-signal is sent to main control module 120.Wherein, fault electric arc detection module 110
It can utilize in harmonic component method, Wavelet Transform, method of time domain characteristics, high-frequency characteristic method, FFT+ neural networks detection circuit
Fault electric arc.The high frequency signal of electric current in load circuit can also be first extracted, electric current is obtained according to high frequency signal
Scale parameter, scale parameter be more than yardstick threshold value in the case of, determine to include fault electric arc in load circuit.
Main control module 120 is used in the case where judging to need to carry out trip operation according to fault-signal, to trip action
Execution module 130 sends dropout control signal.For example, main control module 120 only receives primary fault signal, it is probably now to sentence
It is disconnected to carry out trip operation, then do not send dropout control signal to trip action execution module；If continuous several times receive
Fault-signal, then it may judge to need to carry out trip operation, then send dropout control signal to trip action execution module.Ability
Domain it will be appreciated by the skilled person that be only used for illustrating herein, the judgement bar of main control module 120 can be set according to actual conditions
Part.
Trip action execution module 130 is used to perform action by what dropout control signal was converted to magnet coil, so as to complete
Into trip operation.After the completion of trip operation, the electric current in load circuit can be protected.
Air switch in the embodiment is capable of detecting when fault electric arc, and dropout behaviour is carried out after fault electric arc is detected
Make, so as to protect the safety of load circuit.
In another embodiment of the present utility model, as shown in Figure 1B, fault electric arc detection module 110 is filtered including high pass
Wave shaping circuit 111 and detection and analysis circuit 112, output end and the detection and analysis circuit 112 of high-pass filtering shaping circuit 111
Input electrically connects；Wherein, high-pass filtering shaping circuit 111 extracts the high frequency signal of electric current in load circuit, and by height
Frequency component signal is sent to detection and analysis circuit 112；Test and analyze the yardstick that circuit 112 obtains electric current according to high frequency signal
Parameter, in the case where scale parameter is more than yardstick threshold value, determine to include fault electric arc in load circuit.For example, collection load
After electric current in circuit, by electric current by filtering shaping circuit, the high frequency signal with regard to electric current can be obtained, and then obtain high frequency
The scale parameter of component signal, wherein it is possible to the high frequency signal of the electric current after sampling is calculated according to Gauss distribution method
Positional information scale parameter or energy information scale parameter.In one embodiment, scale parameter is the mark of high frequency signal
Accurate poor σ.Because fault electric arc is before breakdown air forms stable electric arc (foring periodicity electric arc) completely, electric arc produces machine
There is several factors, under the collective effect of these factors, the time of electric arc, position, size etc. produced by allowing for for reason
Parameter is substantially all the characteristic for meeting Gaussian Profile, and does not meet this rule then when not having electric arc or producing normal arc
Rule, such as single electric arc only produce once, just no longer produce；Periodicity electric arc is then regular caused.Therefore it may only be necessary to examine
The size for surveying the scale parameter σ of the positional information of electric current high-frequency fluctuation or energy information in load circuit can determine whether harmful electricity
Arc, i.e., as the σ ＞ σ that the sampled point in certain sampling time is calculatedSettingWhen, then it may determine that and loaded within this sampling period
Harmful electric arc is generated among circuit.
In this embodiment, the high fdrequency component of electric current is believed in the fault electric arc detection module extraction load circuit of air switch
Number, according to the scale parameter of high frequency signal acquisition electric current, in the case where scale parameter is more than yardstick threshold value, it is determined that load
Fault electric arc is included in circuit, greatly reduce detection different loads in the case of fault electric arc wrong report probability, improve inspection
The sensitivity of fault electric arc in load circuit is surveyed, and antijamming capability is very strong, so that air switch possesses fault electric arc
Detection and defencive function.
In another embodiment of the present utility model, it is whole that fault electric arc detection module 110 can also include LPF
Shape circuit 113, the output end of LPF shaping circuit 113 are connected with testing and analyzing the input of circuit 112, wherein, low pass
Filtering shaping circuit 113 is used for the low frequency component signal for extracting electric current in load circuit, and detection and analysis circuit 112 is in the low of electric current
In the case that the scale parameter of frequency component signal is more than yardstick threshold value, it is standard failure electricity to determine the fault electric arc in load circuit
Arc.Wherein, the high fdrequency component in electric current is used for analyzing fault electric arc whether is included in load circuit, and low frequency component is negative for measuring
The size of electric current in circuit is carried, whether the energy that this size of current is used to define fault electric arc meets that national standard GB14287.4 is advised
Fixed index.Fault electric arc detection module 110 continues to judge electricity in the case where including fault electric arc in detecting load circuit
Whether the scale parameter of the low frequency component signal of stream is more than yardstick threshold value, if the scale parameter of low frequency component signal is more than yardstick threshold
Value, it is determined that the fault electric arc in load circuit is standard failure electric arc, i.e. fault electric arc in load circuit meets UL1699
Or equivalent standard set quota.
Fault electric arc detection module 110 can also include signal output apparatus 114, signal output apparatus 114 and master control mould
Block 120 electrically connects, wherein, the fault electric arc that signal output apparatus 114 is used in load circuit meets preassigned failure electricity
In the case of arc, fault-signal is sent to main control module 120.Main control module 120 is judging that needs are taken off according to fault-signal
In the case of button operation, dropout control signal is sent to trip action execution module 130.Trip action execution module 130 will be de-
What button control signal was converted to magnet coil performs action, to complete trip operation.
In this embodiment, air switch can accurately identify fault electric arc inside load circuit in real time, and load
Fault electric arc in circuit meets to complete trip operation in the case of preassigned fault electric arc, negative so as to preferably protect
Carry circuit.
Fig. 2 is the structural representation of another embodiment of the utility model air switch.The air switch except including
Outside fault electric arc detection module 210, main control module 220 and trip action execution module 230, in addition to overvoltage/undervoltage detection module
240, wherein, fault electric arc detection module 210 is described in detail in the above-described embodiments.Overvoltage/undervoltage detection module 240
Circuit is detected for overvoltage/undervoltage, for detecting present load circuit input voltage, in present load circuit input voltage higher than overvoltage
Threshold value or less than brownout threshold in the case of, to main control module 220 send overvoltage/undervoltage signal.For example, on a certain bar branch road, overvoltage
Threshold value is 220V, when it is more than 220V that overvoltage/undervoltage detection module 240, which detects current electric grid input voltage, then to main control module
Send over-pressed signal.It will be understood by those of skill in the art that this voltage is only used for illustrating, in actual applications, can basis
The pressure-bearing situation of circuit sets different threshold values.Main control module 220 is additionally operable to judging that needs are taken off according to overvoltage/undervoltage signal
In the case of button operation, dropout control signal is sent to trip action execution module 230.Trip action execution module 230 is used for
Action is performed by what dropout control signal was converted to magnet coil, to complete trip operation.
In this embodiment, air switch can not only detect fault electric arc, moreover it is possible to detect overvoltage/undervoltage situation, and
Trip operation is completed under failure electric arc or over-voltage condition, so as to improve the defencive function of circuit.
In another embodiment of the present utility model, the air switch can also include over-current detection module 250, its
In, over-current detection module 250 is over-current detection circuit, for detecting the electric current of present load circuit, in present load circuit
In the case that electric current is higher than excessively stream threshold value, over-current signal is sent to main control module 220.Main control module 220 is additionally operable to according to mistake
Stream signal is judged in the case of needing to carry out trip operation, and dropout control signal is sent to trip action execution module 230.
In this embodiment, air switch can also further realize over-current detection and defencive function, in present load electricity
The electric current on road completes trip operation in the case of being higher than excessively stream threshold value, therefore can realize circuit protection function.
In another embodiment of the present utility model, the air switch can also include detection of electrical leakage module 260, its
In, detection of electrical leakage module 260 is electric-leakage detection circuit, for detecting whether present load circuit leaks electricity, in present load circuit
In the case of electric leakage, electric leakage signal is sent to main control module 220；Main control module 220 is additionally operable to judging need according to electric leakage signal
In the case of carrying out trip operation, dropout control signal is sent to trip action execution module 230.
In this embodiment, air switch can also further realize detection of electrical leakage and defencive function, in present load electricity
Trip operation is completed in road in the case of leaking electricity, therefore can realize circuit protection function.
In another embodiment of the present utility model, the air switch can also include excess temperature detection module 270, its
In：Excess temperature detection module 270 is that excess temperature detects circuit, for detecting present air switch internal temperature, is switched in present air
In the case that internal temperature is higher than excess temperature threshold value, excess temperature signal is sent to main control module 220；Main control module 220 is additionally operable in root
Judge according to excess temperature signal in the case of needing to carry out trip operation, dropout control signal is sent to trip action execution module.
In this embodiment, air cock can also further realize excess temperature detection and defencive function, be switched in present air
Internal temperature is higher than in the case of excess temperature threshold value into trip operation, therefore can realize circuit protection function.
In another embodiment of the present utility model, the air switch can also include communication module 280, wherein：It is logical
News module 280 can be the specific hardware unit of the compositions such as PLC, integrated circuit, associated components, for by main control unit 220
Received signal and the status information of present load circuit are sent to network side equipment by communication.For example,
The state in current system and fault message are sent to safety-protection system using WIFI or Zigbee protocol, to complete entirely to pacify
The information of anti-system exchanges.
In the above-described embodiments, there is the air switch fault electric arc to detect and protection, overvoltage/undervoltage detect and protection, excessively stream
Many utility functions such as detection and protection, detection of electrical leakage and protection, overheat protector, the envelop of function of air switch is enhanced, and
And the air switch also has wireless data communication capability, it is capable of the seamless of completion status and fault message and domestic security system
Connection.
In another embodiment of the present utility model, air switch can be 1P air switches, 2P air switches, 3P skies
Air cock or 4P air switches, i.e. air switch of the present utility model supports 220V and 230V electrical voltage systems, have 1P, 2P,
More kinds of 3P, 4P is spaced apart breaking control form.1P is that 220V electrical voltage systems only have being spaced apart for live wire break function, and 2P is 220V voltages
System zero live wire simultaneously switches off being spaced apart for function, and 3P is 380V electrical voltage systems only being spaced apart with live wire break function, 4P 380V
The live wire of electrical voltage system zero simultaneously switches off being spaced apart for function.Wherein, as shown in figs. 3 a-3d, can in the product design of the air switch
With including on off operating mode instruction 310, leakage testses button 320, system indicator and function button 330 and switch 340 etc..
In addition, air switch of the present utility model also has a variety of current specifications, for example, 10A, 16A, 20A, 25A, 32A,
40A, 63A and 100A specification.
In this embodiment, in the case where meeting existing air switch volume requirement, possess many safety protection functions.
Volume is equal to the existing air switch for possessing creepage protection function, seamless can replace existing civilian and commercial air switch.
Meanwhile defencive function is much more than existing air switch, there is higher protection level of security, to be civilian and commercial provide
Perfect electricity protection function.
Although some specific embodiments of the present utility model are described in detail by example, this area
It is to be understood by the skilled artisans that above example merely to illustrate, rather than in order to limit the scope of the utility model.This
Field it is to be understood by the skilled artisans that can not depart from the scope of the utility model and spirit in the case of, to above example
Modify.The scope of the utility model is defined by the following claims.
Claims (11)
1. a kind of air switch, it is characterised in that perform mould including fault electric arc detection module, main control module and trip action
Block, main control module electrically connect with fault electric arc detection module and trip action execution module respectively；
Wherein, fault electric arc detection module sends event after fault electric arc is included in detecting present load circuit to main control module
Hinder signal；Main control module is sent out after judging to need to carry out trip operation according to the fault-signal to trip action execution module
Send dropout control signal；Trip action execution module performs action by what the dropout control signal was converted to magnet coil, with
Just trip operation is completed.
2. air switch according to claim 1, it is characterised in that fault electric arc detection module includes high-pass filtering shaping
Circuit and detection and analysis circuit, the output end of high-pass filtering shaping circuit are connected with testing and analyzing the input of circuit；
Wherein, high-pass filtering shaping circuit extracts the high frequency signal of electric current in the load circuit, and by the high frequency division
Amount signal is sent to detection and analysis circuit；Test and analyze the yardstick ginseng that circuit obtains the electric current according to the high frequency signal
Number, in the case where the scale parameter is more than yardstick threshold value, determine to include fault electric arc in the load circuit.
3. air switch according to claim 2, it is characterised in that it is whole that fault electric arc detection module also includes LPF
Shape circuit, the output end of LPF shaping circuit are connected with testing and analyzing the input of circuit；
Wherein, LPF shaping circuit extracts the low frequency component signal of electric current in the load circuit, and detection and analysis circuit exists
In the case that the scale parameter of the low frequency component signal of the electric current is more than yardstick threshold value, the failure in the load circuit is determined
Electric arc is standard failure electric arc.
4. air switch according to claim 3, it is characterised in that fault electric arc detection module also includes signal output electricity
Road, signal output apparatus electrically connect with main control module；
Wherein, in the case that fault electric arc of the signal output apparatus in the load circuit meets preassigned fault electric arc,
Fault-signal is sent to main control module.
5. air switch according to claim 1, it is characterised in that also include the overvoltage/undervoltage inspection electrically connected with main control module
Survey module；
Wherein, overvoltage/undervoltage detection module is detecting present load circuit input voltage higher than overvoltage threshold or less than brownout threshold
Afterwards, overvoltage/undervoltage signal is sent to main control module；Main control module is judging to need to carry out trip operation according to the overvoltage/undervoltage signal
Afterwards, dropout control signal is sent to trip action execution module.
6. air switch according to claim 1, it is characterised in that also include the over-current detection electrically connected with main control module
Module；
Wherein, over-current detection module is sent after the electric current for detecting present load circuit is higher than excessively stream threshold value to main control module
Over-current signal；Main control module according to the over-current signal after judging to need to carry out trip operation, to trip action execution module
Send dropout control signal.
7. air switch according to claim 1, it is characterised in that also include the detection of electrical leakage electrically connected with main control module
Module；
Wherein, detection of electrical leakage module sends electric leakage signal after the electric leakage of present load circuit is detected to main control module；Master control mould
Block sends control letter of threading off to trip action execution module after judging to need to carry out trip operation according to the electric leakage signal
Number.
8. air switch according to claim 1, it is characterised in that also include the excess temperature detection electrically connected with main control module
Module；
Wherein, excess temperature detection module is sent out after detecting that present air switch internal temperature is higher than excess temperature threshold value to main control module
Pass through warm signal；Main control module performs mould after judging to need to carry out trip operation according to the excess temperature signal, to trip action
Block sends dropout control signal.
9. according to any described air switches of claim 1-8, it is characterised in that also include electrically connecting with main control module leads to
Interrogate module；
Wherein, the status information of the signal received by main control unit and present load circuit is passed through radio communication by communication module
Mode is sent to network side equipment.
10. air switch according to claim 9, it is characterised in that
Communication uses WIFI or Zigbee protocol.
11. according to any described air switches of claim 1-8, it is characterised in that the air switch be 1P air switches,
2P air switches, 3P air switches or 4P air switches.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720155160.2U CN206907722U (en) | 2017-02-21 | 2017-02-21 | Air switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720155160.2U CN206907722U (en) | 2017-02-21 | 2017-02-21 | Air switch |
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| Publication Number | Publication Date |
|---|---|
| CN206907722U true CN206907722U (en) | 2018-01-19 |
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| CN201720155160.2U Active CN206907722U (en) | 2017-02-21 | 2017-02-21 | Air switch |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108679795A (en) * | 2018-05-17 | 2018-10-19 | 广东美的制冷设备有限公司 | Anti-tripping control method, device, system and air conditioner |
| CN108716755A (en) * | 2018-05-17 | 2018-10-30 | 广东美的制冷设备有限公司 | Anti-breaking electric control method, control device, air conditioner and the storage medium of air conditioner |
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| CN112583000A (en) * | 2020-11-25 | 2021-03-30 | 中国科学技术大学先进技术研究院 | Fault arc identification tripping device |
| CN113488956A (en) * | 2021-06-23 | 2021-10-08 | 芯海科技（深圳）股份有限公司 | Circuit breaker |
| CN119182101A (en) * | 2024-11-25 | 2024-12-24 | 英诺电力科技(天津)有限公司 | Load electric fireproof safety protection device for power distribution network |
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2017
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| CN111819748A (en) * | 2018-03-08 | 2020-10-23 | Ls电气株式会社 | Residual current circuit breaker and arc detection device with freely-assembled and disassembled residual current circuit breaker |
| CN108679795A (en) * | 2018-05-17 | 2018-10-19 | 广东美的制冷设备有限公司 | Anti-tripping control method, device, system and air conditioner |
| CN108716755A (en) * | 2018-05-17 | 2018-10-30 | 广东美的制冷设备有限公司 | Anti-breaking electric control method, control device, air conditioner and the storage medium of air conditioner |
| CN108716755B (en) * | 2018-05-17 | 2020-11-27 | 广东美的制冷设备有限公司 | Power-off prevention control method and device for air conditioner, air conditioner and storage medium |
| CN112583000A (en) * | 2020-11-25 | 2021-03-30 | 中国科学技术大学先进技术研究院 | Fault arc identification tripping device |
| CN113488956A (en) * | 2021-06-23 | 2021-10-08 | 芯海科技（深圳）股份有限公司 | Circuit breaker |
| CN119182101A (en) * | 2024-11-25 | 2024-12-24 | 英诺电力科技(天津)有限公司 | Load electric fireproof safety protection device for power distribution network |
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