CN103578819A - Power switch with extinguishing section for extinguishing an electric arc - Google Patents
Power switch with extinguishing section for extinguishing an electric arc Download PDFInfo
- Publication number
- CN103578819A CN103578819A CN201310339471.0A CN201310339471A CN103578819A CN 103578819 A CN103578819 A CN 103578819A CN 201310339471 A CN201310339471 A CN 201310339471A CN 103578819 A CN103578819 A CN 103578819A
- Authority
- CN
- China
- Prior art keywords
- control device
- arc
- contact
- extinguishing
- arc section
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
- H01H9/302—Means for extinguishing or preventing arc between current-carrying parts wherein arc-extinguishing gas is evolved from stationary parts
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
- H01H9/44—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet
- H01H9/443—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet using permanent magnets
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
- H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
- H01H9/346—Details concerning the arc formation chamber
Landscapes
- Arc-Extinguishing Devices That Are Switches (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Breakers (AREA)
Abstract
A power switch, preferably a DC-current switch, comprises a contact body having at least one arc extinguish chamber, a contact portion of a contact bridge and a contact portion of a contact piece which extend along a longitudinal direction and a width direction are arranged in the arc extinguish chamber, wherein when a fracture is opened, an electric arc is formed under a load between the contact portions of the contact bridge and the contact piece. To ensure an effective extinguishing of the electric arc and to enable the use of as many parts of the existing power switch as possible, it is provided, according to the invention, that at least one arc extinguish chamber has an arc extinguish section in which the electric arc is deflectable into the arc extinguish section, the arc extinguish section is limited in the longitudinal direction by a first arc extinguish section wall and a second arc extinguish section wall, and limited in the width direction by a third arc extinguish section wall and a fourth arc extinguish section wall, and the first, second, third and fourth arc extinguish section walls form three closed corners and an open corner.
Description
Technical field
The present invention relates to a kind of current switch, preferred DC-current switch, comprise the contact with at least one arc control device, in described arc control device, be provided with the contact section of contact bridge and the contact section of contact, described contact bridge extends along the Width that is directed to the longitudinal direction described at least one arc control device from contact bridge and laterally extend with respect to longitudinal direction, wherein, when the fracture extending abreast with respect to the short transverse of pointing to contact from contact bridge is opened, between the contact section of contact bridge and contact, under load, form electric arc.
Background technology
When opening the contact that electric current flows through, as long as its condition exists, just produce electric arc.This causes used noble metal pitting of contacts.When firing duration is long, there is the damage of contact, also may burn.In other alternating current switch of low power level, electric arc automatic distinguishing during zero crossing once on electric current.Therefore at this, can cancel arc-extinction device.
Situation when direct current is different, because there is no natural zero crossing at this, therefore needs special electric arc arc-extinction device.Described electric arc arc-extinction device can utilize a plurality of mechanism of simultaneously carrying out: improve arc length; Conversion fast, to reduce arc duration and reduce thus the damage on switch; Self-produced gas extinguishing arc, its mode is from insulating material, to decomposite gas (for example H2, hydrocarbon) by arcing, produces thus the cooling and extinguishing arc faster of the reinforcement of electric arc.
In addition known, by means of magnet---also referred to as arc blow-out magnet, in the situation that utilizing Lorentz force, make arc deflection and/or prolongation and extinguishing arc more quickly thus.In EP1998350A2, for example disclose a kind of have comprise the housing of two case half and the house wiring switching device of electric arc arc extinction unit, wherein, not only in alternating current (AC) operating mode but also in direct current (DC) operating mode, the electric arc producing in electric arc ante-chamber is directed in electric arc arc extinction unit by means of permanent magnet.At this, permanent magnet is arranged in guiding channel and can in the assembled state of case half, be inserted into guiding channel by the mouth by housing wall from outside afterwards.The electric arc arc-extinction device of EP1998350A2 relates to a kind of stack device of ferromagnetic electric arc muffler, and described electric arc muffler keeps interval toward each other by holding device.In addition, this stack device has the recess of V-arrangement at the approaching side of electric arc, has further improved thus to manufacture and has dropped into.
Summary of the invention
The object of the invention is, a kind of current switch is provided, described current switch especially can be used as DC-current switch, has very effectively, simple as far as possible and arc-extinction device with low cost thus simultaneously.In addition, this structure should allow to use the parts as much as possible of existing current switch.
In order to address the above problem, according to the present invention, a kind of current switch has been proposed, described current switch comprises the contact with at least one arc control device, is provided with the section that contacts of the contact section of contact bridge and contact in described arc control device.Typical form of implementation can have a plurality of, four such arc control device for example for each current switch or contact.For the electric arc that can make direct current (DC) in the situation that to form under voltage or load between contact section when fracture is opened extinguishing arc effectively, be provided with the extinguishing arc section of arc control device, this extinguishing arc section forms the subspace of arc control device, and can be forced to/deflection of electric arc or extend in this subspace.Preferably by means of permanent magnet, carry out the deflection of electric arc, yet also can use other mechanism in principle, for example electromagnet or air pressure system.If use permanent magnet (or electromagnet), carry out deflection or the prolongation of electric arc in the situation that utilizing Lorentz force.
Core of the present invention is the extinguishing arc section of the special tectonic of arc control device, and described extinguishing arc section is preferably designed for the recess of contact, by extinguishing arc section wall limited boundary and electric arc, can be deflected in described extinguishing arc section.Extinguishing arc section wall forms three closed bights and a unlimited bight at this, and wherein, closed bight obtains by the mutual docking of extinguishing arc section wall, and the mutual docking of unlimited bight by the imaginary extension of extinguishing arc section wall obtains.Electric arc can deflect into by unlimited bight in extinguishing arc section.Therefore, occur and the contacting of at least one extinguishing arc section wall of extinguishing arc section in extinguishing arc section, thus, release gas and electric arc obtain cooling, and this causes again electric arc by extinguishing arc more quickly.Correspondingly, a kind of current switch, preferred DC-current switch, comprise the contact with at least one arc control device, in described arc control device, be provided with the contact section of contact bridge and the contact section of contact, described contact bridge extends along the Width that is directed to the longitudinal direction described at least one arc control device from contact bridge and laterally extend with respect to longitudinal direction, wherein, when the fracture extending abreast with respect to the short transverse of pointing to contact from contact bridge is opened, between the contact section of contact bridge and contact, under load, form electric arc, at described current switch, preferably in DC-current switch, according to the present invention, propose: described at least one arc control device have extinguishing arc section, electric arc can deflect in described extinguishing arc section, extinguishing arc section is in a longitudinal direction by the first extinguishing arc section wall and the second extinguishing arc section wall limited boundary, extinguishing arc section on Width by the 3rd extinguishing arc section wall and the 4th extinguishing arc section wall limited boundary, the first extinguishing arc section wall, the second extinguishing arc section wall, the 3rd extinguishing arc section wall and the 4th extinguishing arc section wall form three closed bights and a unlimited bight.At this, to observe in a longitudinal direction, the first extinguishing arc section wall is observed before being arranged on the second extinguishing arc section wall on Width, before the 3rd extinguishing arc section wall is arranged on the 4th extinguishing arc section wall.
In order to make electric arc as far as possible unhinderedly deflect in extinguishing arc section, unlimited bight is the bight that approaches contact bridge most.Correspondingly, according to proposing in a kind of preferred form of implementation of current switch of the present invention: unlimited bight is formed by the first extinguishing arc section wall and the 3rd extinguishing arc section wall.
In addition, in order to ensure electric arc, enter without barrier in extinguishing arc section, extinguishing arc section wall arranges like this, contact bridge is observed in a longitudinal direction and be positioned at unlimited inside, bight.Therefore, according to proposing in a kind of particularly preferred form of implementation of current switch of the present invention: contact bridge is in a longitudinal direction by contact bridge seamed edge limited boundary; Observe in a longitudinal direction, contact bridge seamed edge is arranged between the first extinguishing arc section wall and the second extinguishing arc section wall.
In addition, in order to ensure electric arc, enter without barrier in extinguishing arc section, extinguishing arc section wall arranges like this, contact bridge is observed on Width and be positioned at unlimited inside, bight.Therefore, according to proposing in a kind of particularly preferred form of implementation of current switch of the present invention: contact bridge on Width by contact bridge lateral edges limited boundary; On Width, observe, contact bridge lateral edges is arranged between the 3rd extinguishing arc section wall and the 4th extinguishing arc section wall.
Finally, in order to ensure electric arc, enter without barrier in extinguishing arc section or for electric arc is produced in extinguishing arc section, extinguishing arc section wall arranges like this, contact bridge is partly arranged in extinguishing arc section.Therefore, according to proposing in a kind of particularly preferred form of implementation of current switch of the present invention: contact bridge extend in extinguishing arc section by unlimited bight.
Because electric arc passes through permanent magnet always at same direction upper deflecting under the predetermined sense of current, so, in this case, if contact bridge only extend in extinguishing arc section with contact bridge bight, can guarantee that arc deflection is in extinguishing arc section.Therefore, according to proposing in a kind of particularly preferred form of implementation of current switch of the present invention: contact bridge extend in extinguishing arc section by unlimited bight with contact bridge bight, and wherein, contact bridge bight forms by contact bridge seamed edge and contact bridge lateral edges.
Preferably the deflection of electric arc is undertaken by permanent magnet, and this permanent magnet is arranged in the groove of contact.Therefore, with respect to existing current switch, obtained a kind of contact based on the required arrangement possibility of permanent magnet with less arc control device.In addition, only Bridge matches with the arc control device that reduce, and all other parts of existing current switch can be used.
Therefore, according to proposing in a kind of particularly preferred form of implementation of current switch of the present invention: contact has at least one for holding the groove of permanent magnet, to make arc deflection in extinguishing arc section, wherein, described at least one groove and described at least one arc control device are constructed dividually." dividually structure " mean, between groove and arc control device, do not exist and be connected.Therefore, especially between electric arc and permanent magnet, there will not be and contact, thus, permanent magnet is impaired being avoided by electric arc.Only the magnetic line of force of permanent magnet extends to arc control device from groove, and thus, arc deflection is in extinguishing arc section.
For permanent magnet can be acted on electric arc as well as possible, this permanent magnet is arranged near fracture as far as possible.Therefore, according to proposing in a kind of particularly preferred form of implementation of current switch of the present invention: described at least one groove extends abreast with respect to fracture.
Because Lorentz force obtains as the velocity of ionization particulate in electric arc and the cross product in magnetic field, so, in order to make electric arc deflection effectively, be noted that the magnetic line of force is to be accurately parallel to fracture to extend in no instance.In order to realize this point, for example can use clavate magnet, the utmost point of described clavate magnet laterally arranges with respect to fracture, and thus, the magnetic line of force laterally extends with respect to fracture.Therefore, according to proposing in a kind of particularly preferred form of implementation of current switch of the present invention: be provided with permanent magnet in described at least one groove, wherein, the utmost point of described permanent magnet is along the direction setting horizontal with respect to fracture.
If arranging extremely like this of permanent magnet deflects in extinguishing arc section electric arc under the predetermined sense of current, when the sense of current commutates, situation is conventionally really not so.This is because Lorentz force refers in the opposite direction in the situation that the sense of current commutates.That is to say, the setting of the utmost point of permanent magnet is incorrect for this situation.In order to make arc deflection when the sense of current commutates in extinguishing arc section, arranging of the utmost point of permanent magnet must be different.For can make electric arc entirely true deflect in extinguishing arc section, arranging of the utmost point of permanent magnet must accurately commutate, and that is to say, polarity must commutate.
The solution of this problem can realize in bipolar conversion.This is noted that to, according to national security regulation, one pole (unipolar) conversion may be unallowed, thus, the current switch that carries out bipolar conversion can be attractive especially.For bipolar conversion, be respectively arranged with arc control device pair, described arc control device are to being comprised of two arc control device preferably with public contact bridge according to the present invention.
Now in order to solve for two kinds of possible senses of current the problem that the utmost point or polarity are correctly set, be provided with permanent magnet pair, described permanent magnet is to being comprised of two permanent magnets, the utmost point of described permanent magnet differently, preferably polarity contrary/mirror image puts upside down and arranges or directed (gegengleich).That is to say, the right permanent magnet of permanent magnet preferably has contrary polarity.Permanent magnet is to being arranged on groove centering.That is to say, permanent magnet is arranged in a groove that belongs to right arc control device of arc control device, and another permanent magnet is arranged in another groove that belongs to another right arc control device of arc control device.
In two right arc control device of arc control device, when interrupting, contact forms electric arc.Now by the utmost point of permanent magnet is differently set, independently in one of two right arc control device of arc control device, electric arc is pressed onto or is deflected in extinguishing arc section with the sense of current, and in another right arc control device of arc control device, the deflection of electric arc there is carried out in another preferred contrary direction.Correspondingly, in one of two right arc control device of arc control device, carry out electric arc according to extinguishing arc of the present invention.The contact realizing thus in right arc control device of arc control device interrupts preventing that the parts in another right arc control device of arc control device from not allowing ground load.When current opposite in direction, in another right arc control device of arc control device, carry out the correct deflection of electric arc and contact interruption reliably thus.Correspondingly, according to proposing in a kind of preferred form of implementation of current switch of the present invention: for bipolar conversion, be provided with at least one arc control device pair, described arc control device form the arc control device that preferably have public contact bridge by two; Be provided with groove pair, described groove forms each groove by corresponding to each right arc control device of arc control device; Be provided with permanent magnet pair, described permanent magnet forms each permanent magnet by being arranged in each right groove of groove; The utmost point of the permanent magnet that permanent magnet is right is different from extremely arranging of another right permanent magnet of permanent magnet.
In order to realize the different simple especially form of layout of the utmost point of another permanent magnet that the layout of the utmost point of a right permanent magnet of permanent magnet is right with respect to permanent magnet, according to proposing in a kind of preferred form of implementation of current switch of the present invention: the utmost point polarity of another permanent magnet that the utmost point of the permanent magnet that permanent magnet is right is right with respect to permanent magnet arranges on the contrary.This is corresponding to the opposite polarity of two permanent magnets.
For design simple and with low cost especially for manufacture, according to proposing in a kind of preferred form of implementation of current switch of the present invention: two arc control device that arc control device are right and two right grooves of groove set gradually before and after observing in a longitudinal direction, preferably around the imaging plane mirror image perpendicular to longitudinal direction arrange.In this case, the right permanent magnet of permanent magnet only must be inserted in the right groove of groove with opposite polarity polarity, and this visual angle from manufacturing technology sees it is the step that can simply implement.
Arc control device can have the first arc control device region, and described the first arc control device regional structure becomes the recess of contact.In a longitudinal direction, described the first arc control device region is by first area wall limited boundary, wherein, first area wall observe be in a longitudinal direction arranged on contact bridge after.In addition, the first chamber region separates by means of contact pin with extinguishing arc section.At this, contact pin forms extinguishing arc section wall, and electric arc can deflect in this extinguishing arc section wall.That is to say, the large-area possibility that contacts between the wall of electric arc and extinguishing arc section is responsible in contact pin.Therefore, according to proposing in a kind of particularly preferred form of implementation of current switch of the present invention: arc control device have the first arc control device region of the recess that is configured to contact, and described the first arc control device region is in a longitudinal direction by first area wall limited boundary; Between the first arc control device region and extinguishing arc section, be provided with the contact pin being formed by contact.
At this, arc control device are configured to asymmetric, and wherein, extinguishing arc section is greater than the first arc control device region, so that for electric arc or its deflection with extend enough positions are provided.Therefore, according to proposing in a kind of particularly preferred form of implementation of current switch of the present invention: extinguishing arc section is on Width and/or have in a longitudinal direction than the first large size in arc control device region.
For electric arc is entered in extinguishing arc section easily, according to proposing in a kind of particularly preferred form of implementation of current switch of the present invention: contact pin has the cross section of V-shaped expansion in a longitudinal direction.
As described in, if contact bridge only extend in extinguishing arc section with contact bridge bight, under the predetermined sense of current, can guarantee that electric arc deflects in extinguishing arc section by permanent magnet.Therefore, according to proposing in a kind of particularly preferred form of implementation of current switch of the present invention: in the middle of contact pin is arranged on respect to the extension on Width of contact bridge, in the middle of being preferably arranged on respect to the extension on Width of the contact section of contact bridge.
Because contact pin is formed by contact, so contact can be manufactured integratedly.In order to optimize extinguishing arc effect by discharging gas when electric arc contacts with extinguishing arc section wall, contact by strongly discharge gas material, preferably by polyamide, made.Therefore, especially discharge hydrogen when electric arc contacts with extinguishing arc section wall, this is because its specific heat capacity causes electric arc by effective cooling and thus by rapid extinguishing arc.Correspondingly, according to proposing in a kind of particularly preferred form of implementation of current switch of the present invention: contact be one and by polyamide, made.
In a kind of particularly preferred form of implementation of current switch that is preferably equipped with permanent magnet, be provided with at least one and put out mouthful discharge degree device as arc control device.At this, described at least one terminal cavities of putting out mouthful after arc control device are positioned to described arc control device with observation is in a longitudinal direction connected, and the terminal being connected with contact extend in described terminal cavities.Terminal is connected for conductor is fixed on contact or with contact again.
By putting out mouth, can carry out the pressure balance between arc control device and terminal cavities.In addition, this contributes to by putting out more promptly by electric arc extinguishing arc.Therefore,, according to proposing in a kind of particularly preferred form of implementation of current switch of the present invention: contact also has at least one terminal cavities, described terminal cavities is observed in a longitudinal direction and is arranged on after described at least one arc control device; Be provided with at least one and put out mouth, described in put out and mouthful described at least one arc control device be connected with described at least one terminal cavities.
About described at least one put out size and the location mouthful in Width and short transverse, there is no restriction in principle.Therefore, according to proposing in a kind of particularly preferred form of implementation of current switch of the present invention: on Width and/or in short transverse, described at least one extension of putting out mouthful is less than or equal to the extension of described at least one arc control device.
Especially the first arc control device region, contact pin and extinguishing arc section are applicable to location and put out mouth.Therefore, according to proposing in a kind of particularly preferred form of implementation of current switch of the present invention: described at least one put out and mouthful be arranged in first area wall and/or the second extinguishing arc section wall and/or contact pin, described the second extinguishing arc section wall is observed in a longitudinal direction and is arranged on after the first extinguishing arc section wall.
Put out the restricted extension of mouth in short transverse and promote nozzle effect, this nozzle effect contributes to put out electric arc.In addition the oblique portion that, this nozzle effect can also be put out mouthful by sensing gets a promotion.Therefore, according to proposing in a kind of particularly preferred form of implementation of current switch of the present invention: first area wall and/or the second extinguishing arc section wall and/or contact pin have towards described at least one put out mouthful oblique portion pointing to.
In another kind of particularly preferred embodiment, tiltedly portion extends on Width in described at least one whole extension of putting out mouthful.
In manufacturing technology, particularly advantageously, put out layout termination in short transverse as contact of mouth.Correspondingly, according to proposing in a kind of particularly preferred form of implementation of current switch of the present invention: described at least one put out the border that mouth limits first area wall and/or the second extinguishing arc section wall and/or contact pin in short transverse.
Accompanying drawing explanation
By means of embodiment, describe the present invention in detail now.Accompanying drawing is exemplary, although should represent the present invention design, never limit or even concluding the present invention is described.In the accompanying drawings:
Fig. 1 illustrates the contact of known current switch perpendicular to the cross section view of fracture;
Fig. 2 illustrates the cross section view perpendicular to fracture according to the contact of current switch of the present invention;
Fig. 3 illustrate according to the contact of current switch of the present invention according to the cross section view of the cutting line A-A in Fig. 2;
Fig. 4 illustrate according to the contact of current switch of the present invention according to the cross section view of the cutting line B-B in Fig. 2;
Fig. 5 illustrates the axle of the current switch with a plurality of arc control device dissecing out and surveys view, wherein, has indicated section plane C and D;
Fig. 6 illustrates the axle of the current switch with a plurality of arc control device dissecing out and surveys view, wherein, has indicated section plane E;
Fig. 7 illustrates according to the cross section view that is similar to Fig. 2 of two arc control device of the current switch for bipolar conversion with permanent magnet special arrangement of the present invention;
Fig. 8 illustrates the zoomed-in view of the details G in Fig. 7.
Reference numerals list:
1 contact bridge
2 contacts
3 electric arcs
4 arc control device
5 permanent magnets
6 contacts
The contact section of 7 contact bridges
The contact section of 8 contacts
9 grooves for permanent magnet
10 contact pin
11 first arc control device regions
12 extinguishing arc sections
13 longitudinal directions
14 Widths
15 contact bridge seamed edges
16 first extinguishing arc section wall
17 second extinguishing arc section wall
18 fractures
19 contact bridge lateral edges
20 the 3rd extinguishing arc section wall
21 the 4th extinguishing arc section wall
The bight of 22 closures
23 unlimited bights
24 contact bridge bights
25 short transverses
26 terminal cavities
27 put out mouth
28 contact lids
29 oblique portions
30 first area walls
31 terminals
32 pinching screws
33 conductors
34 senses of current
The deflection of 35 polarity at permanent magnet electric arc when correct
36 deflections of electric arc when the incorrect polarity of permanent magnet
37 imaging planes
Electric arc in the right arc control device of 3' arc control device
The arc control device that 4' arc control device are right
The permanent magnet that 5' permanent magnet is right
Contact section in the right arc control device of 7' arc control device
The groove that 9' groove is right
Contact pin in the right arc control device of 10' arc control device
The first arc control device region of the arc control device that 11' arc control device are right
The extinguishing arc section of the arc control device that 12' arc control device are right
The width of the arc control device of the known current switch of X
The velocity of the ionization particulate of v electric arc
B magnetic flux density
F Lorentz force
Embodiment
Figure 1 illustrates the section of the contact 2 of known current switch.Contact 2 has arc control device 4, is provided with the contact bridge 1 with contact section 7 in these arc control device.Contact section 7 is designed to rectangle in Fig. 1, and as contact bridge 1 in a longitudinal direction 13 and Width 14 extensions.Yet be noted that self-evidently, other shape of contact section 7, be especially round-shapedly also fine.Arc control device 4 have width X on Width 14, typically are 8mm to 9mm.
In addition, in Fig. 1, can see electric arc 3, this electric arc along fracture 18(referring to Fig. 3) contacting between section 8 of contact section 7 and contact 6, form---when these two contact sections 7,8 and are separated from each other under voltage or load.The metallic vapour that the molten material of appearance contact section 7,8 forms and the dielectric breakdown of following, wherein, the metallic vapour particulate of ionization moves according to the voltage being applied on contact section 7,8.
Finally, on longitudinal direction 13, observe, at arc control device 4, be provided with terminal cavities 26 below.Terminal 31 extend into (referring to Fig. 3) in terminal cavities 26, and this terminal is connected with contact 6.Terminal 31 is connected for conductor 33 is fixed on contact 6 or with contact, for this reason, uses in an illustrated embodiment pinching screw 32.
At the section shown in Fig. 1, be substantially perpendicular to described fracture 18; The cross section view of Fig. 3 shows current switch according to the present invention according to the section of the cutting line A-A in Fig. 2, and wherein, arrow represents direction of visual lines.At this, in Fig. 3, also can see to contact and cover 28, this contact lid can be set on contact 2 and by clamping and fix contact 6.
Especially the in the situation that of direct current, depending on the intensity of electric current, if electric arc 3 not by timely extinguishing arc, may cause contacting, section 7,8 damages or even burning.In order to realize the extinguishing arc of electric arc 3, according in the form of implementation shown in Fig. 2 of the contact 2 of current switch of the present invention, arc control device 4 are designed to asymmetric.At this, arc control device 4 are divided into the first arc control device region 11 and extinguishing arc section 12.The first arc control device region 11 on longitudinal direction 13 by first area wall 30 limited boundaries.Contact 2 forms contact pin 10 between the first arc control device region 11 and extinguishing arc section 12.
In addition, at the contact 2 shown in Fig. 2, have closed groove 9, permanent magnet 5 is arranged in this groove, the extremely preferably orientation in the direction perpendicular to fracture 18 of described permanent magnet.
In order to use the parts as much as possible of known current switch for current switch according to the present invention, the external dimensions of the contact 2 in Fig. 2 is identical with the external dimensions of the known contact 2 in Fig. 1.Because be also provided with the groove 9 for permanent magnet 5 in the contact 2 of Fig. 2, so the extension of arc control device 4 on Width 14 is less than the width X of the known arc control device 4 in Fig. 1, typically little 2mm to 3mm, in order to be more also drawn into better described width in Fig. 2.Correspondingly, according to the extension of contact bridge 1 on Width 14 in the contact 2 of current switch of the present invention, be less than the extension of the contact bridge 1 in Fig. 1.
According in the arc control device 4 of current switch of the present invention, contact pin 10 wherein, yet also can be considered eccentric layout in the middle of being arranged on about the extension on Width 14 of contact bridge 1 or about the extension on Width 14 of contact section 7.On Width 14, contact bridge 1 is by contact bridge lateral edges 19 limited boundaries, on longitudinal direction 13 by contact bridge seamed edge 15 limited boundaries.Contact bridge seamed edge 15 and contact bridge lateral edges 19 form contact bridge bight 24, and described contact bridge bight extend in extinguishing arc section 12.
Extinguishing arc section 12 not only all has than the first large size in arc control device region 11 on longitudinal direction 13 but also on Width 14.At this, extinguishing arc section 12 on longitudinal direction 13 by the first extinguishing arc section wall 16 and the second extinguishing arc section wall 17 limited boundaries.On Width 14, extinguishing arc section is by the 3rd extinguishing arc section wall 20 and the 4th extinguishing arc section wall 21 limited boundaries, and the 3rd extinguishing arc section wall is a part for contact pin 10 simultaneously.
On Width 14, observe, the first arc control device region 11 is arranged on for after the groove 9 of permanent magnet 5, and extinguishing arc section 12 is arranged on after the first arc control device region 11 or contact pin 10.
The first extinguishing arc section wall 16 is docked with the 4th extinguishing arc section wall 21, forms thus closed bight 22.In the same way, the 4th extinguishing arc section wall 21 and the second extinguishing arc section wall 17 and the second extinguishing arc section wall 17 and the 3rd extinguishing arc section wall 20 form closed bight 22.Because only the imaginary extension of the first extinguishing arc section wall 16 and the 3rd extinguishing arc section wall 20 is in contact with one another, but not that extinguishing arc section wall 16,20 is in contact with one another itself, so form unlimited bight 23 by the first extinguishing arc section wall 16 and the 3rd extinguishing arc section wall 20.Contact bridge 1 extend in extinguishing arc section 12 by this unlimited bight 23 with contact bridge bight 24.
This layout contributes to electric arc 3 to deflect in extinguishing arc section 12.Due to the Lorentz force on the ionization particulate moving acting in electric arc 3, there is deflection or the extended length of electric arc 3 in the magnetic field of permanent magnet 5.The direction of motion of take predetermined (accurately) sense of current and ionizing thus particulate is prerequisite, and electric arc 3 is forced in extinguishing arc section 12 as shown in Figure 2.Because extinguishing arc section 12 is compared large size with the first arc control device region 11, can realize electric arc 3 corresponding large extended length or deflection in extinguishing arc section 12.
In addition, electric arc 3 can one of at least contact with extinguishing arc section wall 16,17,20,21 in extinguishing arc section 12.At this, from the material of extinguishing arc section wall 16,17,20,21 or contact 2, decomposite gas, thus, electric arc 3 is cooled and the rapid extinguishing arc of described electric arc is promoted.Air release is relevant with the power of conversion in electric arc 3 at this.In order to contribute to air release, with contact pin 10 and extinguishing arc section wall 16,17,20,21 design all-in-one-piece contacts 2 by strongly discharge gas material, preferably by polyamide, made.If electric arc 3 is encountered this material, mainly discharge hydrogen.
The extension of contact pin 10 on Width 14, along with longitudinal direction 13 increases progressively, that is to say, contact pin 10 is V-shaped expansion on longitudinal direction 13.The asymmetric extinguishing arc section 12 that V-arrangement shape makes electric arc 3 enter into arc control device 4 becomes easy.
Even if be noted that in principle the extinguishing arc that electric arc 3 is undertaken by the cooperation of permanent magnet 5 and extinguishing arc section 12 in current switch according to the present invention also can independently work with manipulation reliably and almost in the situation that electric current is little.
If current switch is for changing weak alternating current, for cost-saving can abandoning used permanent magnet 5, because electric arc 3 extinguishing arc during zero crossing once on electric current in this case.
Only, in a kind of particularly preferred form of implementation of current switch that is preferably equipped with permanent magnet 5, be provided with at least one and put out mouthful 27 discharge degree devices as arc control device 4.At this, described at least one put out mouthfuls 27 arc control device 4 be connected with the terminal cavities 26 being positioned at thereafter, make can carry out pressure balance between arc control device 4 and terminal cavities 26.This also contributes to by putting out more promptly by electric arc 3 extinguishing arcs.About described at least one put out mouthfuls 27 size and location in Width 14 and short transverse 25, there is no restriction in principle, this short transverse is parallel to that fracture 18 extends and from contact bridge 1 sensing contact 6.
Fig. 4 shows according to the section of the cutting line B-B in Fig. 2, and wherein, arrow represents direction of visual lines.In this cross section view, can see that putting out 27, one, mouth for two puts out mouth in the first area wall 30 in the first arc control device region 11, puts out mouth in the second extinguishing arc section wall 17 of extinguishing arc section 12, also referring to Fig. 3 for one.At this, put out the border that mouth 27 limits first area wall 30 and the second extinguishing arc section wall 17 in short transverse 25 for two.As an alternative solution, for example, also can consider that unique one is put out mouthfuls 27, this is put out and mouthful on Width 14, in the whole extension of arc control device 4, extends, and except two in Fig. 4 visible putting out mouthfuls 27, also in contact pin 10, form mouthful.
Put out the restricted extension of mouth 27 in short transverse 25 and promote nozzle effect, this nozzle effect contributes to put out electric arc 3.In addition, this nozzle effect can also get a promotion by sensing mouthfuls 27 the oblique portion 29 of putting out.In short transverse 25, observe, correspondingly in first area wall 30 and in the second extinguishing arc section wall 17, before each puts out mouthfuls 27, be provided with oblique portion 29.In an illustrated embodiment, tiltedly portion 29 is putting out respectively in mouthfuls 27 whole extension and is extending on Width 14.
In the cross section view of Fig. 3, can be clear that especially the extension of oblique portion 29 on longitudinal direction 13.The second extinguishing arc section wall 17 is extended according to dotted line and is shunk along short transverse 25 and on longitudinal direction 13 by means of oblique portion 29, until the second extinguishing arc section wall 17 is finally by putting out mouthful 27 limited boundaries.
Fig. 5 shows the axle of the current switch for bipolar conversion dissecing out and surveys view, and described current switch has eight arc control device 4 altogether.Contact is covered 28 and is enclosed within on contact 2 against short transverse 25, and described contact is covered and in short transverse 25, sealed arc control device 4.In Fig. 5, the section plane C of mark is equivalent to the cross section view of Fig. 2, and in Fig. 5, the section plane D of mark is equivalent to the cross section view of Fig. 3.Finally, Fig. 6 shows another axle of the current switch of Fig. 5 and surveys view, wherein, mark section plane E, this section plane is equivalent to the cross section view of Fig. 4.
Fig. 7 shows according to two right arc control device 4 of the arc control device of the current switch for bipolar conversion of the present invention, the cross section view that is similar to Fig. 2 of 4', and wherein, two arc control device 4,4' have public contact bridge 1.For arc control device, to being provided with groove pair, this groove is to consisting of groove 9,9', and wherein each groove configures respectively to one of two right arc control device 4 of arc control device, 4'.Right right two grooves 9, the 9' of two arc control device 4,4' and grooves of arc control device arrange toward each other around imaging plane 37 mirror image, and this imaging plane is perpendicular to longitudinal direction 13.That is to say, before and after right right two grooves 9, the 9' of two arc control device 4,4' and grooves of arc control device observes in a longitudinal direction, set gradually.Groove is to holding permanent magnet pair, and this permanent magnet is to consisting of permanent magnet 5,5'.
In groove 9, can see permanent magnet 5, the utmost point of this permanent magnet is arranged in drawing plane and to set gradually before and after the direction of visual lines perpendicular to longitudinal direction 13.In groove 9', be provided with permanent magnet 5', the utmost point of this permanent magnet is just arranged on the contrary.That is to say, permanent magnet 5' has contrary polarity with respect to permanent magnet 5.
Fig. 7 shows the situation when the direct current with the sense of current 34 interrupts.In arc control device 4, at the contact section 7 of contact bridge 1 and electric arc 3 fingers that between section 8, (referring to Fig. 3) forms that contact of contact 6, enter in the drawing plane of Fig. 7.For the sense of current 34, there is the correct polarity of permanent magnet 5, and in arc control device 4, produce electric arc 3 to the deflection 35 in extinguishing arc section 12.
In order to explain that electric arc is to the realization of deflection in extinguishing arc section 12, Fig. 8 shows the zoomed-in view of the details G in Fig. 7, has wherein been drawn into the field line in the magnetic field of permanent magnet 5.In addition, on a point of contact section 7, be drawn into the vector B of magnetic flux density and the vector F of Lorentz force, described Lorentz force is referred at this some place by the ionization particulate of B and electric arc 3 draw to the cross product of the velocity v in drawing plane.
Corresponding to the sense of current 34, the electric arc 3' in arc control device 4' points out from drawing plane.Therefore, have the wrong polarity of permanent magnet 5' for the sense of current 34, thus, the electric arc 3' from the contact section 7' of Bridge 1 in arc control device 4' is deflected or is pressed onto the extinguishing arc section 12' of arc control device 4'.Replace, electric arc 3' occurs to the deflection 36 in the first arc control device region 11' of arc control device 4', wherein, between the first arc control device region 11' and extinguishing arc section 12', be provided with the contact pin 10' being formed by contact 2.Yet, because carry out the extinguishing arc of electric arc 3 and carry out thus contact reliably interrupting in arc control device 4 in the extinguishing arc section 12 of arc control device 4, so do not occur the parts overload in arc control device 4' or damage.
Claims (23)
1. a current switch, preferred DC-current switch, comprise the contact (2) with at least one arc control device (4), in described arc control device, be provided with the contact section (7) of contact bridge (1) and the contact section (8) of contact (6), described contact bridge extends along the Width (14) that is directed to the longitudinal direction (13) described at least one arc control device (4) from described contact bridge (1) and laterally extend with respect to described longitudinal direction (13), wherein, when the fracture (18) extending abreast with the short transverse (25) of pointing to described contact (6) from described contact bridge (1) is opened, at described contact bridge (1) and described contact (6), contact section (7, 8) between, under load, form electric arc (3), it is characterized in that: described at least one arc control device (4) have extinguishing arc section (12), described electric arc (3) can deflect in described extinguishing arc section, described extinguishing arc section (12) is upper by the first extinguishing arc section wall (16) and the second extinguishing arc section wall (17) limited boundary at longitudinal direction (13), described extinguishing arc section (12) is upper by the 3rd extinguishing arc section wall (20) and the 4th extinguishing arc section wall (21) limited boundary at Width (14), described the first extinguishing arc section wall (16), the second extinguishing arc section wall (17), the 3rd extinguishing arc section wall (20) and the 4th extinguishing arc section wall (21) form three closed bights (22) and a unlimited bight (23).
2. current switch according to claim 1, is characterized in that: described unlimited bight (23) is formed by described the first extinguishing arc section wall (16) and described the 3rd extinguishing arc section wall (20).
3. according to the current switch one of claim 1 to 2 Suo Shu, it is characterized in that: described contact bridge (1) is upper by contact bridge seamed edge (15) limited boundary at longitudinal direction (13); In the upper observation of longitudinal direction (13), described contact bridge seamed edge (15) is arranged between described the first extinguishing arc section wall (16) and described the second extinguishing arc section wall (17).
4. according to the current switch one of claims 1 to 3 Suo Shu, it is characterized in that: described contact bridge (1) is upper by contact bridge lateral edges (19) limited boundary at Width (14); In the upper observation of Width (14), described contact bridge lateral edges (19) is arranged between described the 3rd extinguishing arc section wall (20) and described the 4th extinguishing arc section wall (21).
5. according to the current switch one of claim 1 to 4 Suo Shu, it is characterized in that: described contact bridge (1) extend in described extinguishing arc section (12) by described unlimited bight (23).
6. current switch according to claim 5, it is characterized in that: described contact bridge (1) extend in described extinguishing arc section (12) by described unlimited bight (23) with contact bridge bight (24), wherein, described contact bridge bight (24) form by described contact bridge seamed edge (15) and described contact bridge lateral edges (19).
7. according to the current switch one of claim 1 to 6 Suo Shu, it is characterized in that: described contact (2) has at least one for holding the groove (9) of permanent magnet (5), to described electric arc (3) is deflected in described extinguishing arc section (12), wherein, described at least one groove (9) is constructed dividually with described at least one arc control device (4).
8. according to the current switch one of claim 1 to 7 Suo Shu, it is characterized in that: described at least one groove (9) extends abreast with described fracture (18).
9. according to the current switch one of claim 1 to 8 Suo Shu, it is characterized in that: in described at least one groove (9), be provided with permanent magnet (5), wherein, the utmost point of described permanent magnet is transversely in the direction setting of described fracture (18).
10. according to the current switch one of claim 1 to 9 Suo Shu, it is characterized in that: described at least one arc control device (4) have the first arc control device region (11) of the recess that is configured to described contact (2), described the first arc control device region is upper by first area wall (30) limited boundary at longitudinal direction (13); Between described the first arc control device region (11) and described extinguishing arc section (12), be provided with the contact pin (10) being formed by described contact (2).
11. current switches according to claim 10, is characterized in that: described extinguishing arc section (12) is gone up and/or on longitudinal direction (13), has than described the first large size in arc control device region (11) at Width (14).
12. according to claim 10 to the current switch one of 11 described, it is characterized in that: described contact pin (10) has the cross section in the upper V-shaped expansion of longitudinal direction (13).
13. according to claim 10 to the current switch one of 12 described, it is characterized in that: described contact pin (10) medially arranges with respect to the extension on Width (14) of described contact bridge (1), preferably the extension on Width (14) with respect to the contact section (7) of described contact bridge (1) medially arranges.
14. according to the current switch one of claim 1 to 13 Suo Shu, it is characterized in that: described contact (2) be one and by polyamide, made.
15. according to the current switch one of claim 1 to 14 Suo Shu, it is characterized in that: described contact (2) also has at least one terminal cavities (26), described terminal cavities is arranged on described at least one arc control device (4) below upper observation of longitudinal direction (13); Be provided with at least one and put out mouthful (27), described in put out and mouthful described at least one arc control device (4) be connected with described at least one terminal cavities (26).
16. current switches according to claim 15, is characterized in that: upper and/or upper in short transverse (25) at Width (14), described at least one extension of putting out mouthful (27) is less than or equal to the extension of described at least one arc control device (4).
17. according to claim 15 to the current switch one of 16 described, it is characterized in that: described at least one put out mouthful (27) and be arranged in described first area wall (30) and/or described the second extinguishing arc section wall (17) and/or described contact pin (10), described the second extinguishing arc section wall is arranged on described the first extinguishing arc section wall (16) below upper observation of longitudinal direction (13).
18. according to claim 15 to the current switch one of 17 described, it is characterized in that: described first area wall (30) and/or described the second extinguishing arc section wall (17) and/or described contact pin (10) have towards described at least one put out the oblique portion (29) that mouthful (27) are pointed to.
19. current switches according to claim 18, is characterized in that: described oblique portion (29) Width (14) upper described at least one put out in the whole extension of mouthful (27) and extend.
20. according to claim 15 to the current switch one of 19 described, it is characterized in that: described at least one put out mouthful (27) on the upper border that limits described first area wall (30) and/or described the second extinguishing arc section wall (27) and/or described contact pin (10) of short transverse (25).
21. according to the current switch one of claim 7 to 20 Suo Shu, it is characterized in that: for bipolar conversion, be provided with at least one arc control device pair, described arc control device to the arc control device that preferably there is public contact bridge (1) by two (4,4') form; Be provided with groove pair, described groove to by corresponding to each right arc control device of described arc control device (4, each groove 4') (9,9') form; Be provided with permanent magnet pair, described permanent magnet to by be arranged on each right groove of described groove (9, each permanent magnet in 9') (5,5') form; The utmost point of the permanent magnet (5) that described permanent magnet is right is different from another right permanent magnet of described permanent magnet extremely arranging (5').
22. current switches according to claim 21, is characterized in that: the utmost point of the permanent magnet (5) that described permanent magnet is right arranges on the contrary with respect to right another permanent magnet of described permanent magnet utmost point polarity (5').
23. according to the current switch one of claim 21 to 22 Suo Shu, it is characterized in that: two arc control device (4 that described arc control device are right, 4') and right two grooves of described groove (9,9') in turn arrange before and after observing longitudinal direction (13) is upper---preferably around the imaging plane perpendicular to described longitudinal direction (13) (37) mirror image ground---.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ATGM318/2012 | 2012-08-07 | ||
| ATGM318/2012U AT13887U1 (en) | 2012-08-07 | 2012-08-07 | Power switch with extinguishing section for extinguishing an electric arc |
| EP13154070 | 2013-02-05 | ||
| EP13154070.0A EP2696360B1 (en) | 2012-08-07 | 2013-02-05 | Power switch with extinguishing section for extinguishing an electric arc |
| EPEP13154070 | 2013-02-05 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103578819A true CN103578819A (en) | 2014-02-12 |
| CN103578819B CN103578819B (en) | 2017-04-12 |
Family
ID=47665991
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310339471.0A Active CN103578819B (en) | 2012-08-07 | 2013-08-06 | Power switch with extinguishing section for extinguishing an electric arc |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP2696360B1 (en) |
| CN (1) | CN103578819B (en) |
| AT (1) | AT13887U1 (en) |
| DK (1) | DK2696360T3 (en) |
| ES (1) | ES2625203T3 (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1258924A (en) * | 1998-12-30 | 2000-07-05 | 施耐德电器工业公司 | Electric switch equipment having contact part with groove |
| CN1801423A (en) * | 2004-12-06 | 2006-07-12 | 施耐德电器工业公司 | Electrical switchgear with recycling of cut-off gases |
| DE102005007301A1 (en) * | 2005-02-17 | 2006-08-24 | Abb Patent Gmbh | Electrical installation device, e.g. for use with line safety switch, has exhaust opening at broader side of housing wall to discharge gas escaping from arc extinguisher, and baffle preventing re-entering of gas into arc antechamber |
| FR2905797A1 (en) * | 2006-09-08 | 2008-03-14 | Fuji Elec Fa Components & Sys | Circuit breaker e.g. molded-case circuit breaker, has plates disposed along length of path of circuit to form space that is divided into regions, where spacing is increased to position of point and in opposite to point of one region |
| DE102007053636B3 (en) * | 2007-11-08 | 2009-04-09 | Abb Ag | Electrical installation equipment e.g. circuit breaker, has opening receiving permanent magnet for producing alternating current or direct current glass device supporting arc guide during alternating current and direct current operations |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0236202B1 (en) * | 1986-02-28 | 1990-12-27 | Merlin Gerin | Current-switching apparatus with a static switch and protective circuit breaker |
| DE102007025537A1 (en) | 2007-05-31 | 2008-12-04 | Abb Ag | Electrical service switching device with an arc blowing device |
| CN201541079U (en) * | 2009-11-12 | 2010-08-04 | 安徽鑫龙电器股份有限公司 | Alternating current high-voltage arc suppression cabinet |
| CN201698689U (en) * | 2010-04-02 | 2011-01-05 | 保定市大正太阳能光电设备制造有限公司 | Advertising lamp box using light-emitting diode (LED) light source |
-
2012
- 2012-08-07 AT ATGM318/2012U patent/AT13887U1/en not_active IP Right Cessation
-
2013
- 2013-02-05 DK DK13154070.0T patent/DK2696360T3/en active
- 2013-02-05 EP EP13154070.0A patent/EP2696360B1/en active Active
- 2013-02-05 ES ES13154070.0T patent/ES2625203T3/en active Active
- 2013-08-06 CN CN201310339471.0A patent/CN103578819B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1258924A (en) * | 1998-12-30 | 2000-07-05 | 施耐德电器工业公司 | Electric switch equipment having contact part with groove |
| CN1801423A (en) * | 2004-12-06 | 2006-07-12 | 施耐德电器工业公司 | Electrical switchgear with recycling of cut-off gases |
| DE102005007301A1 (en) * | 2005-02-17 | 2006-08-24 | Abb Patent Gmbh | Electrical installation device, e.g. for use with line safety switch, has exhaust opening at broader side of housing wall to discharge gas escaping from arc extinguisher, and baffle preventing re-entering of gas into arc antechamber |
| FR2905797A1 (en) * | 2006-09-08 | 2008-03-14 | Fuji Elec Fa Components & Sys | Circuit breaker e.g. molded-case circuit breaker, has plates disposed along length of path of circuit to form space that is divided into regions, where spacing is increased to position of point and in opposite to point of one region |
| DE102007053636B3 (en) * | 2007-11-08 | 2009-04-09 | Abb Ag | Electrical installation equipment e.g. circuit breaker, has opening receiving permanent magnet for producing alternating current or direct current glass device supporting arc guide during alternating current and direct current operations |
Also Published As
| Publication number | Publication date |
|---|---|
| AT13887U1 (en) | 2014-11-15 |
| EP2696360A1 (en) | 2014-02-12 |
| CN103578819B (en) | 2017-04-12 |
| ES2625203T3 (en) | 2017-07-18 |
| EP2696360B1 (en) | 2017-04-05 |
| DK2696360T3 (en) | 2017-05-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3018686B1 (en) | Framework of relay and relay | |
| JP6253651B2 (en) | Single DC arc chute and bidirectional DC electrical switching device using the same | |
| CN105826102B (en) | Switching device with permanent magnet arc extinguishing | |
| EP2650894B1 (en) | Electric current switching apparatus | |
| US9343251B2 (en) | Bi-directional direct current electrical switching apparatus including small permanent magnets on ferromagnetic side members and one set of arc splitter plates | |
| US20090094820A1 (en) | Contractor Assembly With Arc Steering System | |
| KR102397524B1 (en) | Connection devices for electrical switches and electrical switches | |
| US8575508B2 (en) | Current switch | |
| US9425003B2 (en) | Electric current switching apparatus | |
| CN107112153A (en) | Arc extinction room | |
| CN107578938A (en) | Low-voltage circuit breaker | |
| US10636607B2 (en) | High voltage compact fused disconnect switch device with bi-directional magnetic arc deflection assembly | |
| KR20130000096U (en) | Arc extinguishing apparatus for circuit breaker | |
| CN108962643A (en) | Current switch element and the electrical switchgear including it can be removed | |
| CN220172050U (en) | Arc extinguishing chamber and circuit breaker | |
| CN218788361U (en) | Circuit breaker | |
| CN104078257A (en) | Switchgear | |
| CN103578819A (en) | Power switch with extinguishing section for extinguishing an electric arc | |
| CN111868869B (en) | Electromagnetic contactor | |
| CN109559946A (en) | A kind of breaker | |
| CN113539745A (en) | Arc extinguishing system of direct current contactor | |
| CN218647802U (en) | Arc extinguishing device of switch | |
| CN115831641A (en) | Nonpolar magnetic field drive arc structure | |
| JP4693736B2 (en) | Gas insulated disconnect switch | |
| JPS63170824A (en) | 3-phase common tank type gas breaker |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| REG | Reference to a national code |
Ref country code: HK Ref legal event code: DE Ref document number: 1191728 Country of ref document: HK |
|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| REG | Reference to a national code |
Ref country code: HK Ref legal event code: GR Ref document number: 1191728 Country of ref document: HK |