CN104282511B - Modularized electronic miniature circuit breaker and electrical system using the same - Google Patents
Modularized electronic miniature circuit breaker and electrical system using the same Download PDFInfo
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- CN104282511B CN104282511B CN201310272151.8A CN201310272151A CN104282511B CN 104282511 B CN104282511 B CN 104282511B CN 201310272151 A CN201310272151 A CN 201310272151A CN 104282511 B CN104282511 B CN 104282511B
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- circuit breaker
- miniature circuit
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/02—Details
- H02H3/021—Details concerning the disconnection itself, e.g. at a particular instant, particularly at zero value of current, disconnection in a predetermined order
- H02H3/023—Details concerning the disconnection itself, e.g. at a particular instant, particularly at zero value of current, disconnection in a predetermined order by short-circuiting
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- Emergency Protection Circuit Devices (AREA)
Abstract
The invention discloses a modularized electronic miniature circuit breaker, wherein a circuit signal acquiring device, a circuit board assembly and a relay are integrated in a modularized housing, so that the circuit breaker realizes functions of large-current instantaneous tripping, small-current time delay tripping, overload tripping, overvoltage protecting, undervoltage protecting, protection selectivity, multifunctionality, interactive communication, etc. The invention further discloses an electrical system with the electronic miniature circuit breaker for realizing protection selectivity, and a multi-pole modularized electronic miniature circuit breaker.
Description
Technical field
The present invention relates to a kind of digital-to-analogue electronic type miniature circuit breaker, more particularly, to for Terminal Power Distribution System
Digital-to-analogue electronic type miniature circuit breaker, the invention further relates to the electrical system and the miniature open circuit of multi-pole modelling electronic type using it
Device.
Background technology
Miniature circuit breaker is widest a kind of terminal protection electrical equipment used in electric terminal power distribution equipment.Chopper can be
Connect under the improper circuit condition of regulation, carry certain hour and breaking current to provide circuit protection.Current is miniature disconnected
Road device is usually mechanical type, i.e., when circuit is short-circuited or during heavy overload, the armature adhesive of overcurrent trip makes freely to take off
Buckle mechanism action, main contacts disconnects main circuit.When circuit overloads, the heating of the thermal element of thermal trip makes curved on bimetal leaf
Song, promotes free tripping mechanism action.
But the progress of the development and science and technology with production, mechanical mini chopper gradually shows to win completely
Appoint various protection demands, weak point be mainly manifested in it is following some.
First, mechanical bimetal leaf design is complicated, is influenced by temperature larger.
Secondly, in the case that mechanical mini chopper breaks down in circuit, major loop, selectivity are instantaneously disconnected
Difference.Selectivity refers to by the cooperation between automatic safety device, allows the failure of electrical network arbitrfary point and only straight by failure
Connect the performance that the chopper of one-level is excluded.In simple terms, during life will be used alternately for, using selectivity, house can only be disconnected
In the circuit that breaks down, and the normal operation of other electrical equipment is not affected, therefore, it is possible to indicating at failure, to bring very to life yet
Convenience.In industrial aspect, the selectivity is then particularly important.The power-off of industrial production line will cause production disruption, cause
Delay date of delivery, it is also possible to destroy production equipment, economic loss is huge.More seriously, important safety equipment may be closed down, is made
Into major accidents such as leakage, environmental pollutions.If industrial production line has selectivity, when breaking down, only stop faulty line,
Can then avoid or mitigate the problems referred to above.
Again, mechanical type chopper does not possess detection function to the electric current for flowing through circuit.With sending out for electric automatization
Exhibition and the popularization of microcomputer, using microcomputer are inevitable trends in online line safety protection, it is desirable to understand more
Many curtage information, so that defencive function is better achieved, and can be with other intelligent terminals communications.
Accordingly, it is desired to provide possess selectivity, being capable of Acquisition Circuit information and and can be with other intelligent terminals
The digital-to-analogue electronic type miniature circuit breaker of communication.
The content of the invention
Above-mentioned purpose is completely or partially realized by the digital-to-analogue electronic type miniature circuit breaker of the present invention.
According to an aspect of the present invention, there is provided a kind of digital-to-analogue electronic type miniature circuit breaker, including digital-to-analogue housing, also wrap
Include in housing：Mechanical part, connection in circuit, for the snap action when electric current reaches first threshold disconnecting
Circuit.Also include electronic control part, in being connected to P poles loop, for from P poles loop Acquisition Circuit information, and in circuit
Action when information reaches setting condition, while controlling the mechanical part action with disconnecting circuit.
Preferably, the electronic control part includes signals collecting induction apparatuss, integrated circuit board component, relay, power supply
Device and the second mechanical component, signals collecting induction apparatuss are used for from P poles loop Acquisition Circuit information, and circuit information is sent to
Integrated circuit board component, electric supply installation is used for relay and surface-mounted integrated circuit assembly power supply, and integrated circuit board component can be arranged
The condition, and analysis circuit information is calculated, when the setting condition is reached, integrated circuit board component control relay is moved
Make, drive the second mechanical component, second mechanical component to drive the mechanical part action with disconnecting circuit.
Preferably, the mechanical part includes magnetic coil assemblies, is connected to P poles loop, when electric current reaches the in the loop of P poles
Action during one threshold value；Contact assembly, including at least one contact for being connected to P poles loop, for disconnecting and closed circuit；First
Mechanical component, for connecting contact assembly, in magnetic coil assemblies action, is actuated by magnetic coil assemblies and moves contact assembly
Make, and in the second mechanical component action, being driven by second mechanical component and making contact assembly action；Go out
Arc device, the electric arc produced during for eliminating contact assembly disconnection and closure.
Preferably, above-mentioned digital-to-analogue electronic type miniature circuit breaker can arrange condition by circuit board assemblies.
Preferably, the condition may include current threshold, voltage threshold and delay time.
Preferably, above-mentioned digital-to-analogue electronic type miniature circuit breaker also includes being connected to the data-interface of circuit board assemblies.
According to a further aspect in the invention, there is provided a kind of multi-pole modelling electronic type miniature circuit breaker, including being integrated in one
The n aforesaid digital-to-analogue electronic type miniature circuit breaker for rising.
Preferably, n is any integer in 1 to 4.
According to another aspect of the invention, there is provided a kind of electrical system for realizing protective seletion, including being arranged on upper one
Aforesaid digital-to-analogue electronic type miniature circuit breaker in level circuit, and the mechanical type chopper being arranged in next stage circuit,
Time delay is set in aforesaid digital-to-analogue electronic type miniature circuit breaker, when breaking down in next stage circuit, in next stage circuit
Mechanical type chopper instantaneously disconnect, due to the time delay, the digital-to-analogue electronic type miniature circuit breaker in upper level circuit does not have
Disconnect, realize protective seletion.
Preferably, some grades of circuits are may include in the upper level circuit, includes phase in some grades of circuits respectively
The aforesaid digital-to-analogue electronic type miniature circuit breaker of quantity is answered, different time delays are set respectively in miniature circuit breaker, made described
Time delay of the delay time of the chopper in arbitrary higher level's circuit in upper level circuit than the chopper in arbitrary subordinate's circuit
Time is long.
According to another aspect of the invention, there is provided a kind of electrical system for realizing protective seletion, including arrange it is some before
The digital-to-analogue electronic type miniature circuit breaker stated, makes some digital-to-analogue electronic type miniature circuit breakers connect by the data of the chopper
Mouth communicates with one another, and in the digital-to-analogue electronic type miniature circuit breaker time delay is arranged, by relatively more described some choppers
Electric current, accurate failure judgement, realizes protective seletion.
By digital-to-analogue electronic type miniature circuit breaker of the invention, can completely replace traditional mechanical type chopper,
It is capable of achieving complete selectivity, under-voltage protection, overvoltage protection, and can easily expanded function, there is provided electric current, information of voltage, enter
Row failure logging, thread off instruction, remote alarmss etc., are also capable of achieving networking, carry out real-time control, networking monitoring.
Description of the drawings
Fig. 1 is the three-dimensional view of digital-to-analogue electronic type miniature circuit breaker of the invention；
Fig. 2 is the left side isometric view of the digital-to-analogue electronic type miniature circuit breaker of the invention that partial shell is removed；
Fig. 3 is the left side elevation view of the digital-to-analogue electronic type miniature circuit breaker of the invention that partial shell is removed；
Fig. 4 is the three-dimensional view of the digital-to-analogue electronic type miniature circuit breaker of the invention that partial shell is removed, and is shown
For detecting the coil of electric current；
Fig. 5 is the perspective right view of the digital-to-analogue electronic type miniature circuit breaker of the invention that partial shell is removed,
Show the coil and the coil for power supply for detecting electric current；
Fig. 6 is the right side elevation view of the digital-to-analogue electronic type miniature circuit breaker of the invention that partial shell is removed, and is shown
The coil and the coil for power supply for detecting electric current is shown；
Fig. 7 is the three-dimensional view of coil block according to an embodiment of the invention；
Fig. 8 is the schematic diagram of the principle for showing the present invention；
Fig. 9 is the example of the dropout curve of the mechanical mini chopper of prior art；
Figure 10 is the example of the dropout curve of digital-to-analogue electronic type miniature circuit breaker of the invention；
Figure 11 is the exploded perspective view of digital-to-analogue electronic type miniature circuit breaker according to a preferred embodiment of the invention.
Specific embodiment
Describe the ultimate principle and structure of the present invention in detail below with reference to accompanying drawings." upside ", " left side " in accompanying drawing,
The direction of working condition when directions such as " right sides " is installed on the vertical plane with reference to the chopper of the present invention is described, and only
For purpose of explanation, limited never in any form.Term P poles used herein refer to live wire, N poles nulling line or the neutral conductor.
By miniature circuit breaker electronization, need to add curtage transformer in chopper.But miniature circuit breaker
There is high requirement to the width of product, the generally modular design of 9mm, i.e. case width is usually the multiple of 9mm, therefore right
It is a challenge for miniature circuit breaker.
Describe concrete structure according to an embodiment of the invention in detail below with reference to accompanying drawings.
GB10963.1 specifies that miniature circuit breaker must have overload protection and short-circuit protection function.Therefore according to this
In bright one embodiment, a kind of assembled digital-to-analogue electronic type miniature circuit breaker in the two poles of the earth is proposed, Fig. 1 is that the electronic type is miniature disconnected
The three-dimensional view of road device, it is generally shown at 1.From figure 1 it appears that the miniature circuit breaker 1 includes the pole 2 of the left side one, and
One pole 3 of the right.Specifically, with reference to Figure 11, Figure 11 is the miniature open circuit of digital-to-analogue electronic type according to the preferred embodiments of the present invention
The exploded perspective view of device, the chopper include digital-to-analogue housing, the housing include the first housing 101, the second housing 102,
3rd housing 103, the 4th housing 104, the 5th housing 105 and the 6th housing 106, wherein, the first housing 101, the second housing
102nd, the 3rd housing 103 and the 4th housing 104 constitute the housing of the pole 2 of the left side one, the 4th housing 104, the 5th housing 105 and the 6th
Housing 106 constitutes the housing of one pole 3 of the right.
Fig. 2 is the left side isometric view of the digital-to-analogue electronic type miniature circuit breaker of the invention that partial shell is removed,
Fig. 3 is the left side elevation view of the digital-to-analogue electronic type miniature circuit breaker of the invention that partial shell is removed.Referring concurrently to figure
Removed housing is the first housing 101 and the 3rd housing 103 in 11, Fig. 2 and Fig. 3.From Fig. 2, Fig. 3 and Figure 11, it can be seen that
Each part in the left side of the second housing 102 of the pole of the chopper left side one, including breaker mechanical component 4, magnetic coil 5, N extremely move and touch
6, N poles static contact 7 and arc-chutes 8, and include P poles moving contact and P poles static contact on the right side of the second housing 102.Magnetic coil
In the major loop of P poles, as shown in Figure 8.P poles moving contact and P poles static contact and N poles moving contact and N poles static contact are all solid
It is scheduled on breaker mechanical component 4.
It should be noted that the arrangement of pole 2 of the left side one and being substantially the same for existing mechanical mini chopper, difference
It is not include bimetal leaf, when circuit is short-circuited, high current (general 15In) senses magnetic assembly 5 by magnetic coil 5
Magnetomotive is produced, spring force is overcome, drives lance motion, mechanical component to lose stable state, P poles moving contact and the rotation of P poles static contact
Turn to separate, it is instantaneous to disconnect P circuits, meanwhile, N poles moving contact and N poles static contact also rotating separation instantaneously disconnect N circuit.
Fig. 4 is the left side isometric view of the digital-to-analogue electronic type miniature circuit breaker of the invention that partial shell is removed,
Show the coil for detecting electric current；Fig. 5 is the miniature open circuit of digital-to-analogue electronic type of the invention that partial shell is removed
The perspective right view of device, it is shown that for detecting the coil and the coil for power supply of electric current；Fig. 6 is that partial shell is removed
The right side elevation view of digital-to-analogue electronic type miniature circuit breaker of the invention, it is shown that for detecting the coil of electric current and being used for
The coil of power supply.
Specifically, the building block of the pole 3 of the right one of the present embodiment is shown in figure, the pole 3 of the right one mainly include after
Electrical equipment 9, coil block 10, integrated circuit board component (PCBA) 13 and accessory side mechanical component 14.The part is by miniature open circuit
Device realizes the control section of electronization.Coil block 10 is arranged in the loop of P poles, detects the current information in the loop of P poles, and will
Current information is supplied to PCBA13 to carry out calculating analysis, while also powering to PCBA13 and relay 9 as power supply.Work as discovery
When there is overload in circuit, PCBA 13 sends signal, drives relay 9, promotes the action of accessory side mechanical component 14.Join simultaneously
According to the exploded perspective view of Figure 11, as can be seen from FIG., accessory side mechanical component 14 includes needle shaft, and needle shaft is through on housing 104
Waist hole, drive breaker mechanical component 3 so as to lose stable state, P poles moving contact and P poles static contact rotating separation, it is instantaneous to disconnect
P circuits, meanwhile, N poles moving contact and N poles static contact also rotating separation instantaneously disconnects N circuit.Can be seen in detail in Figure 11,
Miniature circuit breaker side handle 17 is connected with breaker mechanical adnexa, for by N poles moving contact, N poles static contact, P poles moving contact and P
Pole static contact resets.Adnexa side handle 18 is connected with accessory side mechanical component 14, for relay to be resetted.
It should be noted that the assembled structure in the two poles of the earth of taking of the present embodiment declines machinery chopper and electronic control part
Independent design, is then bolted together, and the structure is for by the existing machinery type breaker electronic that declines being at present directly favourable
, original mechanical mini chopper can be held essentially constant, and simply eliminate bimetal leaf.But the present embodiment is example
Property, it is also possible using other arrangements, can be by each part of chopper, the particularly part of electronic control part
Arrangement in digital-to-analogue housing, all within the scope of the invention, and should not should be limited by the present embodiment.
Also it should be noted that using double contacts in the present embodiment, in practical application, can only include P only with single-tap head
Pole contact, only disconnects P poles when breaking down, this is also within the scope of the present invention.
It should also be noted that the coil block 10 adopted in the present embodiment, it is illustrated in fig. 7, including current detecting
Coil 12 and core current induction coil 11 and the stalloy with two openings.P poles pass through electric current detecting coil 12, electric current
Detection coil 12 is used to detect the current information in circuit that P poles to be through the first opening on stalloy, core current induction coil
Install 11 the second opening sides on stalloy.P electrode currents by when produce change magnetic field, by stalloy and iron core
Electric current induction coil 11, induces induced potential, as power supply, powers to PCBA 13 and relay 9.Electric current detecting coil 12
Can as shown in this embodiment be integrally formed with core current induction coil 11, also can be formed separately.
Should illustrate, the present invention only with electric current detecting coil 12, and can not include core current induction coil 11, PCBA
13 and the power supply of relay 9 can be by from circuit lead.And, the coil block 10 of the present embodiment also can be improved further, electricity
Stream detection coil 12 can take the circle of round-shaped, square configuration or any shape being adapted in use to, coil 11 and coil 12
Number aspect also can further optimize.Electric current detecting coil 12 can be replaced using voltage detecting coil, and these improvement all should be at this
In bright scope.
In addition, in the structure of the realization present invention described above, may also include data-interface, the data-interface can will be micro-
The fault message of type chopper, working condition and current information etc. are exchanged gives other monitoring devices, and is capable of achieving function
Extension.
By the Modular design of the present invention, it is convenient to realize one pole, bipolar, three poles and the miniature open circuit of quadrupole electronic type
Device.
Below, for the concordance of description, still describe of the invention with the embodiments of the invention shown in accompanying drawing
The various applications of digital-to-analogue electronic type miniature circuit breaker, but the various applications of the present invention are not limited to the enforcement shown in accompanying drawing
Example.
1st, big short circuit current instantaneous trip protection
With reference to Fig. 8, schematic block diagram according to this embodiment of the invention is shown in figure.The left-hand component pair of Fig. 8
The pole of the left side one in the present embodiment is answered, magnetic coil 5 is arranged in the loop of P poles, when there is big short circuit current in the loop of P poles, magnetic
The snap action of coil 5, realizes that instantaneous trip is protected.The instantaneous trip curve diagram of the pole of the left side one arrow 10-3 in Fig. 10
Place, dropout curve is displayed without time delay process at this, but usual<Instantaneously disconnect in 10ms, i.e., energy is threaded off.
2nd, low short circuit current delayed releasing protection
With continued reference to Fig. 8, the right one pole of the right-hand component corresponding to the present embodiment in figure.When time delay can be set in PCBA
Between and current threshold.For example, short circuit current threshold value can be set to 5~10In, the time delay can be set to≤20ms.Work as circuit
In by electric current more than the threshold value when, the delayed releasing curve that arrow 10-2 in Figure 10 is indicated can be obtained.Arrow in Figure 10
Delayed releasing curve indicated by 10-2 compared with the dropout curve of the mechanical mini chopper in Fig. 9, in arrow 10-2
There is obvious time delay step in place.
3rd, overlond trip protection
The circle that arrow 10-1 is indicated in Figure 10 represents overlond trip.It is relatively large in common mechanical type chopper
After overcurrent certain time, the heat of generation makes bimetal leaf fully deform, so as to disconnecting circuit.And in the present embodiment
In electronic type miniature breaker, for example current threshold, and persistent period can be arranged by PCBA, overlond trip is accurately set,
And can completely replace the operation principle of bimetal leaf, it is to avoid bimetal leaf is the shortcomings of cold day and hot day temperature influence.
By three kinds recited above basic applications, the miniature open circuit of digital-to-analogue electronic type according to an embodiment of the invention
Device can be completely achieved the function of chopper.And chopper of the invention can be further used in various applications.
4th, it is multi-functional
It is often necessary to select the chopper of different model according to operating current.For example, chopper is generally divided into
The three types of work in three current ranges, current range is respectively 3~5In, 5~10In and 10~14In.But, pass through
Using digital-to-analogue electronic type miniature circuit breaker of the invention, working range, namely threshold value recited above can be in PCBA
In 13, easily arranged by user or producer, that is to say, that by arranging different threshold values, same chopper in PCBA 13
Can be used in any one in three current ranges recited above, and new adnexa need not be bought.
Further, by the way that the electric current detecting coil 12 according to this embodiment of the invention is replaced with into voltage detecting line
Circle, collection voltages signal arranges voltage threshold in PCBA 13, and voltage threshold is arranged in PCBA13, can will make basis
The digital-to-analogue electronic type miniature circuit breaker of the present invention realizes under-voltage protection and the application of overvoltage protection.For example, can set in PCBA
Disconnecting circuit when voltage is reduced to the 70% of about normal voltage is put, or disconnecting circuit when voltage exceedes about 280V is set.
5th, complete selectivity
When digital-to-analogue electronic type miniature circuit breaker of the invention is used cooperatively together with mechanical type chopper, and this
When the electronic type miniature circuit breaker of invention is arranged in higher level's circuit of mechanical type chopper, due to digital-to-analogue of the invention
Electronic type miniature circuit breaker can by PCBA 13 arrange time delay, i.e., when short circuit current passes through, usual time delay for example≤20ms after
Just disconnect, the time can arbitrarily be arranged as needed, and the turn-off time of mechanical type chopper is usual<10ms, therefore, work as machinery
When formula chopper short circuit current occurs in circuit, mechanical type chopper instantaneously disconnects its place loop, and according to this
Bright electronic breaker is disconnected in faulty circuit due to extensibility, not disconnecting by mechanical type chopper, and electric current is just
Chang Hou, remains in that place higher level's circuit runs well, so as to be capable of achieving complete selectivity.
Because the chopper delay time of the present invention can be arranged, therefore under above-mentioned applicable cases, can be miniature in electronic type
The miniature open circuit of corresponding electronic type of the invention is respectively provided with some higher level's circuits of higher level's circuit of chopper application
Device, and respectively in some miniature circuit breakers different time delays are set, make in some higher level's circuits it is arbitrary on
The delay time of the chopper in level circuit is longer than the delay time of the chopper in arbitrary subordinate's circuit, is also capable of achieving to select completely
Selecting property.
When digital-to-analogue electronic type miniature circuit breaker of the invention together with electronic breaker with the use of when, can be
Some digital-to-analogue electronic type miniature circuit breakers of the invention, some digital-to-analogue electronic types are set in electrical protection systems
Miniature circuit breaker is communicated with one another by the data-interface of the chopper, and in some digital-to-analogue electronic type miniature circuit breakers
Middle setting time delay, by the electric current in relatively more described some choppers, accurate failure judgement, it is also possible to realize complete selectivity.
6 and other-end electronic equipment communication
By the data-interface on digital-to-analogue electronic type miniature circuit breaker of the invention (referring to institute in Fig. 4 and Figure 11
The data-interface 19 for showing), it is convenient to Function Extension is carried out, for example, can convey electric current, information of voltage, and with failure note
Record, the functions such as instruction, indicating fault, remote alarmss of threading off.
7th, networking is realized
By the data-interface on digital-to-analogue electronic type miniature circuit breaker of the invention, can also reality be carried out to chopper
When control, realize networking monitoring.
Although the optimal mode for realizing the present invention, the skill of the technical field of the invention is described in detail
Art personnel for putting into practice the various alternate design of the invention in scope and embodiment by, it is realized that should
It is included within the scope of the invention.
Reference numerals list
1 miniature circuit breaker 101-106 housings
The pole of 2 left side one
3 one pole of the right
4 breaker mechanical components
5 magnetic coils
6 N poles moving contacts
7 N poles static contacts
8 arc-chutes
9 relays
10 coil blocks
11 core current induction coils
12 electric current detecting coils
13 PCBA
14 accessory side mechanical components
15 P poles static contacts
16 P poles moving contacts
17 chopper side handles
18 adnexa side handles
19 data-interfaces
Claims (18)
1. a kind of digital-to-analogue electronic type miniature circuit breaker, including digital-to-analogue housing, also includes being arranged in housing：
Mechanical part, connects in circuit, for the snap action when electric current reaches first threshold with disconnecting circuit,
Electronic control part, in being connected to P poles loop, for from P poles loop Acquisition Circuit information, and reaches in circuit information
Action during setting condition, while the mechanical part action is controlled with disconnecting circuit,
Characterized in that, the electronic control part includes：
Signals collecting induction apparatuss, integrated circuit board component, relay, electric supply installation and the second mechanical component, signals collecting sensing
Device is used for from P poles loop Acquisition Circuit information, and circuit information is sent to into integrated circuit board component, electric supply installation be used for after
Electrical equipment and surface-mounted integrated circuit assembly power supply, integrated circuit board component arranges the condition, and calculates analysis circuit information, when reaching
During to the setting condition, integrated circuit board component control relay action drives the second mechanical component, the described second mechanical group
Part drives the mechanical part action with disconnecting circuit.
2. digital-to-analogue electronic type miniature circuit breaker according to claim 1, it is characterised in that the mechanical part includes：
Magnetic coil assemblies, are connected to P poles loop, the action when electric current reaches first threshold in the loop of P poles；
Contact assembly, including at least one contact for being connected to P poles loop, for disconnecting and closed circuit；
First mechanical component, for connecting contact assembly, in magnetic coil assemblies action, is actuated by magnetic coil assemblies and makes contact
Component action, and in the second mechanical component action, being driven by second mechanical component and making contact assembly
Action；
Arc-control device, the electric arc produced during for eliminating contact assembly disconnection and closure.
3. the digital-to-analogue electronic type miniature circuit breaker according to any one of claim 1 to 2, it is characterised in that the shell
Body includes Part I and Part II, and the mechanical part is arranged in the Part I, the electronic control part peace
Dress is in the second portion.
4. digital-to-analogue electronic type miniature circuit breaker according to claim 1, it is characterised in that the electric supply installation is magnet-wire
Circle, sensing produces electromotive force to power.
5. digital-to-analogue electronic type miniature circuit breaker according to claim 4, it is characterised in that for the magnet-wire of power supply
Circle is integrally formed with the signals collecting induction apparatuss.
6. digital-to-analogue electronic type miniature circuit breaker according to claim 1, it is characterised in that the electric supply installation be from
The lead of major loop.
7. the digital-to-analogue electronic type miniature circuit breaker according to any one of claim 1 to 2, it is characterised in that also include
It is connected to the data-interface of circuit board assemblies.
8. digital-to-analogue electronic type miniature circuit breaker according to claim 7, it is characterised in that can be connect by the data
Mouth arranges condition.
9. digital-to-analogue electronic type miniature circuit breaker according to claim 7, it is characterised in that the data-interface be used for
Other electronic type miniature circuit breaker communications in interlock circuit, with more accurately decision circuitry failure condition, realize optionally
Make the breaker actuation of fault loop.
10. digital-to-analogue electronic type miniature circuit breaker according to claim 7, it is characterised in that the data-interface and its
He communicates terminal electronic device, realizes Function Extension.
11. digital-to-analogue electronic type miniature circuit breakers according to claim 1, it is characterised in that the electronic control part
Setting condition include：Second Threshold, and delay time are set, when the electric current in the loop of P poles reaches the Second Threshold, are being prolonged
Late after the delay time, the actuating of relay is made, so that mechanical part action.
12. digital-to-analogue electronic type miniature circuit breakers according to claim 11, it is characterised in that the Second Threshold is less than
The first threshold.
13. digital-to-analogue electronic type miniature circuit breakers according to claim 1, it is characterised in that the electronic control part
Setting condition include：Voltage threshold, and delay time are set, when the voltage in major loop reaches the threshold value, are postponing institute
After stating delay time, the actuating of relay is made, so that main contact action.
A kind of 14. multi-pole modelling electronic type miniature circuit breakers, it is according to claim 1 including the n for integrating
Digital-to-analogue electronic type miniature circuit breaker.
15. multi-pole modelling electronic type miniature circuit breakers according to claim 14, wherein n is arbitrary whole in 1 to 4
Number.
A kind of 16. electrical systems for realizing protective seletion, including：
The miniature open circuit of digital-to-analogue electronic type according to any one of claim 1 to 13 being arranged in upper level circuit
Device, and
The mechanical type chopper being arranged in next stage circuit,
Time delay is set in the digital-to-analogue electronic type miniature circuit breaker according to any one of claim 1 to 13, when next
When breaking down in level circuit, the mechanical type chopper in next stage circuit instantaneously disconnects, due to the time delay, upper level circuit
In digital-to-analogue electronic type miniature circuit breaker be not turned off, realize protective seletion.
17. electrical systems for realizing protective seletion according to claim 16,
Include some grades of circuits in the upper level circuit, respectively including respective numbers according to power in some grades of circuits
Profit requires the digital-to-analogue electronic type miniature circuit breaker any one of 1 to 13, arranges different in miniature circuit breaker respectively
Time delay, it is disconnected in making the delay time of chopper in the arbitrary higher level's circuit in the upper level circuit than arbitrary subordinate's circuit
The delay time of road device is long.
A kind of 18. electrical systems for realizing protective seletion, including：
Some digital-to-analogue electronic type miniature circuit breakers according to any one of claim 7 to 10 are set, some digital-to-analogues are made
Change electronic type miniature circuit breaker to communicate with one another by the data-interface of the chopper, in the miniature open circuit of the digital-to-analogue electronic type
Time delay is set in device, and by the electric current in relatively more described some choppers, accurate failure judgement realizes protective seletion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310272151.8A CN104282511B (en) | 2013-07-01 | 2013-07-01 | Modularized electronic miniature circuit breaker and electrical system using the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310272151.8A CN104282511B (en) | 2013-07-01 | 2013-07-01 | Modularized electronic miniature circuit breaker and electrical system using the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104282511A CN104282511A (en) | 2015-01-14 |
| CN104282511B true CN104282511B (en) | 2017-05-17 |
Family
ID=52257300
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310272151.8A Active CN104282511B (en) | 2013-07-01 | 2013-07-01 | Modularized electronic miniature circuit breaker and electrical system using the same |
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| CN106786346A (en) * | 2017-02-10 | 2017-05-31 | 黑龙江恒讯科技有限公司 | A kind of IP-based miniature circuit breaker |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2541948Y (en) * | 2002-04-01 | 2003-03-26 | 叶炳午 | Small breaker |
| CN102946083A (en) * | 2012-08-30 | 2013-02-27 | 国家电网公司 | Intelligent household circuit breaker |
| CN203553078U (en) * | 2013-07-01 | 2014-04-16 | 施耐德电器工业公司 | Digital-analog electronic miniature circuit breaker |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR200458173Y1 (en) * | 2009-10-19 | 2012-01-25 | 주식회사 삼일전기 | A molded case and earth reakage circuit breaker |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2541948Y (en) * | 2002-04-01 | 2003-03-26 | 叶炳午 | Small breaker |
| CN102946083A (en) * | 2012-08-30 | 2013-02-27 | 国家电网公司 | Intelligent household circuit breaker |
| CN203553078U (en) * | 2013-07-01 | 2014-04-16 | 施耐德电器工业公司 | Digital-analog electronic miniature circuit breaker |
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