CN102237230A - Double interrupted protective switching device for monitoring circuit - Google Patents
Double interrupted protective switching device for monitoring circuit Download PDFInfo
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- CN102237230A CN102237230A CN2011101152525A CN201110115252A CN102237230A CN 102237230 A CN102237230 A CN 102237230A CN 2011101152525 A CN2011101152525 A CN 2011101152525A CN 201110115252 A CN201110115252 A CN 201110115252A CN 102237230 A CN102237230 A CN 102237230A
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- switch
- contact
- switch contact
- control device
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- 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
- H01H9/40—Multiple main contacts for the purpose of dividing the current through, or potential drop along, the arc
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/58—Electric connections to or between contacts; Terminals
- H01H1/5822—Flexible connections between movable contact and terminal
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- 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
- H01H9/446—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet using magnetisable elements associated with the contacts
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Arc-Extinguishing Devices That Are Switches (AREA)
- Breakers (AREA)
Abstract
The invention relates to a double interrupted protective switching device for monitoring circuit, comprising a coil for operating a disconnector, a first breaker contact pair having a first fixed breaker contact and a first movable breaker contact, a second breaker contact pair having a second fixed breaker contact and a second movable breaker contact, wherein the movable breaker contact can be operated by the disconnector, a first explosion chamber having a first guide rail and a first contact arm, wherein the first contact arm is electrically connected to the first fixed breaker contact, and a second explosion chamber having a second guide rail and a second contact arm, wherein the second contact arm is electrically connected to the second fixed breaker contact. The first breaker contact pair is disposed near the second breaker contact pair in a manner of twisting 170-190 DEG with respect to the second breaker contact pair. A flexible electric conductor is disposed between the first movable breaker contact and the second movable breaker contact. The electric conductor is electrically connected to the first and the second movable breaker contacts.
Description
Technical field
The present invention relates to a kind of double-break protection switch that is used for supervisory circuit, it comprises coil, the first switch contact pair that is used to handle decoupler, and it has the first fixing switch contact and the first movable switch contact; And comprise second switch contact pair, and it has the second fixing switch contact and the second movable switch contact, and wherein this movable switch contact can be handled by decoupler; Comprise first arc control device with first guide rail and first contact arm, the switch contact conduction that first contact arm and first is fixed is connected; Comprise second arc control device with second guide rail and second contact arm, the switch contact conduction that second contact arm and second is fixed is connected.
Background technology
The protection switch of this double-break as circuit breaker and circuit protecting switch, particularly works as switch and safety element in power supply network.Circuit breaker is the overcurrent protective device during electrical equipment is installed and particularly is applied in the field of low voltage electric network.Circuit breaker and circuit protecting switch guarantee the safety cut-off when short circuit and protect electrical appliance and equipment to prevent overload.It for example protection circuit prevent by because the damage of the too strong heating of too high electric current.That is to say, protection switch, as circuit breaker and circuit protecting switch, can be at when overload automatic shutdown circuit.
The protection switch of double-break has two switch contact pairs, and they are made up of fixing switch contact and movable switch contact respectively.For the conducting electric current, movable switch contact contacts with the switch contact of fixing.For turn-off current, be designed to movable switch contact and leave fixing switch contact.Interruption of current to each protection switch all at least the short time cause voltage breakdown between movable switch contact and fixing switch contact because distance also enough insulation during the switch contact separation process.If gas is arranged between switch contact, then it under the situation of sufficiently high voltage difference between the switch contact by breakdown potential from and because the gas discharge arcing.
The protection switch of this double-break, as circuit breaker circuit protecting switch in other words, the electric arc that produces and turn-off current are thus promptly extinguished in design like this when switch contact is opened.
This protection switch preferably has coil, and the electric current by this coil pilot flow direction switch contact is one part of current in other words.When electric current raise fast, coil attracted armature, and it discharges circuit breaker, particularly ratchet.This circuit breaker for example pneumatic or the hydraulic pressure effect or the elasticity pretension unclamps protection switch and interruptive current.So for example the spring of pretension is after circuit breaker unclamps, ratchet particularly, move it and thus will movable switch contact and the switch contact fixed separate.
This protection switch has the special arc-control device that is used for quick extinguish arcs in addition.Arc-control device is used for interrupting better or extinguish arcs, and described electric arc produces when the alive switch contact of opening protection switch is secondary.Electric current flows through the more and more littler zone of becoming of attached voltage contact area when separating switch contact, and heats this voltage contact area more and more doughtily.Produce the electric bridge of solution shape before real separately switch contact, this electric bridge comes off when little electric current or evaporates when big electric current.Therefore electric current can only continue to flow by the form of electric arc with plasma column.
The intensity of electric arc is subjected to the influence of the intensity and the type of making current at this.The electric current of 25000A may appear when short circuit occurring in the circuit that for example is protected by circuit protecting switch surpassing.Electric arc depends on that at this direct current of supply or alternating current produce the temperature up to 20000K in the protection switch shell during its burning.Yet high heat load causes damaging protection switch.For example because arcing damages or destroys metal or insulating part.Therefore extinguish arcs as quickly as possible is so that be reduced to bottom line with the thermal energy conversion.Xian Dai protection switch has arc-control device for this reason, and this arc-control device has arc control device, guide rail, arc blow-out bend and/or metallic plate in case of necessity, and described metallic plate covers preceding chamber region.
The protection switch that the double-break protection switch just has two switch contact pairs is with respect to the advantage that single open circuit protection switch just only has the protection switch of switch contact pair, can produce two electric arcs simultaneously, thus and the higher arc voltage of foundation.Therefore electric arc can extinguish quickly, and makes the energy of the conversion in voltage contact area or in protection switch keep low-level.Especially the protection switch that in high power protection switch scope, uses the double-break protection switch just to have two switch contact pairs.
A kind of protection switch with switch contact pair is for example known by EP1548772 A1.Two arc control device of this protection switch are arranged side by side, and form the border of a side of the cup of arc-control device together.The contact arm of each arc control device simultaneously and protrude into parallel to each other in the cup of arc-control device.Shortcoming is arc control device or contact arm are set in opposite directions in described protection switch, thereby causes two magnetic fields of movable electric arc to interfere with each other, and hinders the running of corresponding other electric arc.That is to say that in the arc-control device of EP1548772 A1 electric current flows on the first movable contact by first electric arc that produces from first fixed contact, and further flow on second fixed contact by second electric arc that produces.At the magnetic field of this generation reverse direction, and do not support adjacent arc but even hinder its motion.
The described injurious effects of general acceptance in known protection switch with double-break.Part is by the mutual armoured magnetic field of steel bushing of each cup.This solution is time-consuming and expensive.Another kind of solution be the space separate arc-control device extinguish system just separately arc control device and corresponding contact arm and guide rail so that the corresponding magnetic field of weakening.Yet this requires the place demand of extinguishing system that is used for arc-control device at protection switch Nei Genggao.
Summary of the invention
Task of the present invention provides a kind of double-break protection switch of supervisory circuit; this protection switch can be especially soon and extinguish the electric arc that produces reliably when being opened the switch contact of protection switch; especially should propose a kind of double-break protection switch, this protection switch makes the electric arc that produces in the preceding chamber region of the arc control device of protection switch not damage protection switch.
Described task solves by a kind of double-break protection switch that has by the feature of independent claims 1 by the present invention.Other features of the present invention and details are provided by dependent claims, description and accompanying drawing.
Solve by a kind of double-break protection switch that is used for supervisory circuit by this task of the present invention, it comprises coil, the first switch contact pair that is used to handle decoupler, and it has the first fixing switch contact and the first movable switch contact; And comprise second switch contact pair, and it has the second fixing switch contact and the second movable switch contact, and wherein said movable switch contact can be handled by decoupler; Comprise first arc control device with first guide rail and first contact arm, the switch contact conduction that this first contact arm and first is fixed is connected; Comprise second arc control device with second guide rail and second contact arm, the switch contact conduction that this second contact arm and second is fixed is connected, wherein the first switch contact parafacies reverses 170 ° to 190 ° ground for second switch contact pair and is arranged on second switch contact pair next door, and be provided with flexible electric conductor between the first movable switch contact and the second movable switch contact, this electric conductor conduction connects the first movable switch contact and the second movable switch contact.
A kind of such double-break protection switch can make at switch contact separately secondary and the time electric arc that produces enter in the arc control device by the cup pressure from voltage contact area apace.
Reverse 170 ° to 190 ° ground with respect to second switch contact pair the first switch contact pair is set; wherein said switch contact pair is arranged side by side; and between the first movable switch contact and the second movable switch contact, flexible electric conductor is set; this electric conductor conduction connects the first movable switch contact and the second movable switch contact, becomes possibility thereby make in the arc control device that especially soon the electric arc that produces are incorporated into protection switch.
Be provided with on the contrary mutually the switch contact pair make the magnetic field that in each switch contact sub area, produces do not disturb and even strengthen corresponding other switch contact pair, thereby and significantly quicken electric arc so that described electric arc apace from the switch contact of respective fixation or and movable switch contact or between voltage contact area draw.
This is particularly advantageous, when first switch contact secondary parallel and reverse 180 ° of ground with respect to second switch contact pair and be provided with.But also be conceivablely to be, the switch contact pair is being extended in 10 ° angle in opposite directions.The switch contact pair is positioned at protection switch side by side.The meaning of reversing by meaning of the present invention is, the first fixing switch contact is probably on the second movable switch contact next door, and the first movable switch contact is probably on the second fixing switch contact next door.The reverse direction of switch contact pair is connected movable contact with electric conductor by flexibility especially twisted wire can be supported in the magnetic field that produces in the switch contact sub area mutually when drawing or blowing out electric arc in voltage contact area.
The switch contact pair of double-break protection switch is arranged to make electric current can produce the blow-out coil of driveing electric arc.The magnetic field of single electric rail also helps corresponding other switch contact pair or corresponding other voltage contact area so that rapid movement electric arc.
In the double-break protection switch, flow to by the first fixing switch contact and first electric arc on the first movable switch contact at switch contact after-current separately.Electric current flows on the second movable switch contact from the electric conductor that especially constitutes twisted wire of the first movable switch contact by flexibility.Electric current flows on second switch contact of fixing by second electric arc from the second movable switch contact.Produce the blow-out coil of driveing electric arc by described electric current.Having worked when minimum is opened switch contact in the magnetic field of strengthening or the arc blow-out field of blow-out coil, and drives the electric arc of generation towards the direction of the arc control device of double-break protection switch at once.
Flexible electric conductor especially twisted wire is arranged to make it to move along with the relative motion of movable switch contact mutually, and does not come off from movable switch contact.The end of flexible electric conductor is arranged on two movable switch contacts regularly.
A kind of advantage of advantage of such double-break protection switch is after opening switch contact effectively to quicken electric arc that produces and be associated therewith electric arc is incorporated in the arc control device fast by high-intensity magnetic field that produces or arc blow-out field intensity.By electric arc being incorporated into fast the time of staying that can reduce electric arc between the switch contact pair in the arc control device.This result who brings is, reduces the arc load between fixing switch contact and movable switch contact, can save the contact material of switch contact thus.A kind of such double-break protection switch has higher short switch performance than the double-break protection switch of known same structure size.By the electric conductor of flexibility and contact site or the contact plate on the arc blow-out bend relief switch contact.
By a kind of particularly preferred further expansion of the present invention; in the double-break protection switch, can stipulate; first switch contact pair and second switch contact pair are positioned at cup; this cup is made of two arc control device, and wherein cup is between first arc control device and second arc control device with respect to the setting of first arc control device mirror-inverted ground.That is to say that arc control device are not to be arranged side by side but opposed.Therefore cup is between two arc control device.Two switch contact pair to small parts are positioned at cup, can easily be incorporated in the arc control device that are provided with so that produce electric arc.By mirror-inverted also mirror-inverted and the respective track and the contact arm of arc control device are set parallel to each other of arc control device is set.
Preferred in addition a kind of double-break protection switch wherein is provided with the metallic plate of two settings parallel to each other, and switch contact pair and at least a portion first guide rail and first contact arm are set between described metallic plate.Metallic plate forms two opposed sides of freedom of the cup of arc control device.That is to say that the double-break protection switch constitutes, two opposite side of cup are defined by two arc control device, and two other opposite side of cup defines by two metallic plates.Metallic plate is connected with the coil of protection switch, so that coil can induced field between metallic plate.The coil of metallic plate and protection switch interacts to make and produces high-intensity magnetic field become possibility between metallic plate, and this influence of magnetic field electric arc is so that described electric arc is introduced in the corresponding arc control device once more post.
The coil axis of the coil of protection switch perpendicular to or the plane of almost extending perpendicular to metallic plate extend.Metallic plate constitutes flat.Said metallic plate for example constitutes rectangle, ellipse, circle or L shaped.The meaning almost vertical by meaning of the present invention is that the coil axis of coil becomes the angle between 75 ° to 90 ° especially to become the angle ground between 85 ° to 90 ° to extend with the plane that metallic plate extends.Yet the coil axis of preferred coil extends perpendicular to the plane that metallic plate extends.
By a kind of particularly preferred further expansion of the present invention, can stipulate that in the double-break protection switch coil is arranged between the metallic plate.The coil that is to say protection switch is advantageously provided between metallic plate, so that produce magnetic field between metallic plate, this magnetic field is by coil-induced to metallic plate.The electric arc that the influence of magnetic field that produces between metallic plate produces so that described electric arc comes out from voltage contact area fast, and is forced mobile towards the direction of arc control device.Preferred at least a portion metallic plate covers a side of the coil core of coil.
By a kind of particularly preferred further expansion of the present invention, can stipulate that in protection switch rotational plane is parallel with the contact arm of guide rail and arc control device or almost be parallel to the metallic plate extension, movable switch contact is movable in described rotational plane.Therefore can be by influence the electric arc that produces after the switch contact pair separating especially effectively in the magnetic field that produces between the metallic plate, so that described electric arc is forced to move towards the direction of corresponding arc control device fast.That is to say that the coil by protection switch additionally affacts on the arc blow-out field in the magnetic field that produces between the metallic plate, this arc blow-out field is owing to electric current produces by switch contact and electric arc.
By a kind of particularly preferred further expansion of the present invention; in the double-break protection switch, can stipulate; the first fixing switch contact is arranged on first contact arm as contact plate, and the second fixing switch contact is arranged on second contact arm as contact plate.Can save material on the contact plate by the special execution mode of protection switch, because described contact plate is by electric arc is incorporated into the known protection switch of arc control device internal ratio is subjected to littler load fast.
Previously described double-break protection switch is favourable constitutes circuit breaker or circuit protecting switch, especially constitutes the high power protection switch.
In the double-break circuit protecting switch of a kind of circuit breaker of especially a kind of such formation of double-break protection switch of such formation or a kind of such formation, the coil axis of coil or coil core is preferably perpendicular to the electric arc traffic direction.Therefore protection switch can be opened the back at the contact of protection switch pair and quicken electric arc by the high-intensity magnetic field between the metallic plate.Another advantage in a kind of such double-break protection switch is; can save the contact material on the switch contact; because the arc load that affacts on the switch contact is reduced in the arc blow-out field that produces in switch contact by the magnetic field between the metallic plate with by electric current, and from but few relatively.The double-break protection switch has higher short switch performance by comparing with the double-break protection switch of known same structure size with respect to the coil of the secondary special setting of metallic plate and switch contact.Make full use of magnetic field energy unloading contact site when so-called dynamic opening contact.
Opposite with up to the present known protection switch, in by protection switch of the present invention, preferably make full use of the magnetic field of coil so that make the electric arc of generation force fast to enter in the arc control device, this coil produces magnetic field and is used for magnetic triggering decoupler.Coil is arranged to make coil axis to point to the direction of electric arc operation in known so far protection switch, and the magnetic field of coil generation does not have arc motion or even negative effect thus.
The coil of protection switch preferably is arranged in the double-break protection switch, and the directed in orthogonal in its magnetic field is extended in the electric arc traffic direction.By coil-induced affacting on the electric arc in positive mode to metallic plate, so that can make described electric arc force fast once more to enter in the arc control device of protection switch in the magnetic field that produces the metallic plate.
The structure that comprises the coil of its coil core and two metallic plates or steel plate can be in cup generation magnetic field in the zone between two arc control device just, this magnetic field is by coil-induced to steel plate, and this magnetic field is used for being squeezed in electric arc between movable switch contact and the fixing switch contact towards the direction of guide rail, so that jump on the described guide rail.
Compare and rotate 90 ° and coil is set makes the magnetic field that makes full use of coil become possibility with the coil in being arranged on known protection switch, so that extinguish the electric arc that behind switch contact separately, produces fast.
Metallic plate preferably is connected with coil, so that can induced field between metallic plate.Therefore for example first metallic plate can be arranged on the first distolateral end of coil, and second metallic plate can be arranged on the second distolateral end of coil.Especially metallic plate contacts coil.
Preferred in addition a kind of double-break protection switch, wherein respective track is arranged on the end of corresponding arc control device, and the corresponding contact arm is arranged on the other end of corresponding arc control device.By being set like this, guide rail and contact arm can make electric arc easily force to enter in the arc control device.
The metallic plate that metallic plate especially constitutes iron plate is arranged in the protection switch; and preferably constitute make they cover between the arc control device whole cup or whole before chamber region so that corresponding electric arc can be pressed in the arc control device from the voltage contact area of protection switch fast by magnetic field.
Favourable can stipulate in protection switch, and first guide rail of first arc control device is connected with second guide rail of second arc control device conduction.This is especially preferred, when second guide rail of first guide rail of first arc control device and second arc control device constitute one piece the time.The meaning that constitutes one piece is, guide rail constitutes single-piece, and by with a kind of manufacture method manufacturing.Guide rail preferably constitutes single-piece with the nethermost plate of corresponding arc control device.Identical situation is applicable to contact arm, and described contact arm constitutes single-piece with the uppermost plate of corresponding arc control device.
Description of drawings
Explain in detail by means of accompanying drawing below the present invention and its further expansion and the advantage thereof.Form with signal illustrates:
Fig. 1 is the side cutaway view of a kind of embodiment of double-break protection switch, and this double-break protection switch constitutes according to pressing design principle of the present invention,
Fig. 2 is a kind of vertical view of interior zone of double-break protection switch, and this double-break protection switch constitutes according to pressing design principle of the present invention,
Fig. 3 is the zoomed-in view by the switch contact of the double-break protection switch of Fig. 1,
Fig. 4 is the side cutaway view of a kind of another kind of embodiment of double-break protection switch, and this double-break protection switch is according to constituting by design principle of the present invention.
Element with identical function and type of action is corresponding in Fig. 1 to 4 to be provided with identical Reference numeral.
Reference numerals list
1 protection switch
2 coils
The 2a coil core
3 first fixing switch contacts
4 second movable switch contacts
5 first arc control device
The lower end of 5a first arc control device
The upper end of 5b first arc control device
6 first guide rails
7 first contact arms
9 metallic plates
10 coil axises
Magnetic field between 11 metallic plates
12 second fixing switch contacts
13 second movable switch contacts
14 second arc control device
The lower end of 14a second arc control device
The upper end of 14b second arc control device
15 second guide rails
16 second contact arms
17 cups
21 electric arcs
22 electric currents
23 arc blow-out field/magnetic fields
Electric conductor/the twisted wire of 30 flexibilities.
Embodiment
Fig. 1 illustrates the side cutaway view of a kind of embodiment of double-break protection switch 1, and this double-break protection switch is according to constituting by design principle of the present invention.Double-break protection switch 1 has the first switch contact pair, and it has the first fixing switch contact 3 and the first movable switch contact 4, and second switch contact pair, and it has the second fixing switch contact 12 and the second movable switch contact 13.Therefore protection switch 1 is a kind of so-called double break electrical equipment.Protection switch 1 constitutes and is used for supervisory circuit.Double-break protection switch 1 comprises the unshowned coil that is used to handle unshowned decoupler in addition, and this decoupler is handled movable switch contact; Comprise first arc control device 5 with first guide rail 6 and first contact arm 7, this first contact arm is connected with first switch contact of fixing, 3 conductions; Comprise second arc control device 14 with second guide rail 15 and second contact arm 16, this second contact arm is connected with first switch contact of fixing, 12 conductions.
The view of the switch contact 3,4 of the double-break protection switch 1 of pressing Fig. 1 shown in Figure 3 and 12,13 amplification.
A kind of such double-break protection switch 1 can make at the electric arc 21 of separately switch contact pair 3,4 and generation in 12,13 o'clock and force to enter in the arc control device 5,14 by cup 17 from voltage contact area apace.
The first switch contact pair 3,4 makes with respect to the just in time reverse structure of second switch contact pair 12,13 with at the electric conductor 30 of the flexibility between the first movable switch contact 4 and the second movable switch contact 13 and will be incorporated in the arc control device 5,14 of protection switch 1 at the electric arc 21 that separate switch contact pair 3,4 and generation in 12,13 o'clock apace especially, and wherein said switch contact pair is arranged side by side. Switch contact pair 3,4 and 12,13 mutually reverse structures with being connected of electric conductor 30 make the magnetic field 23 of generation in each switch contact pair 3,4 and 12,13 zones not disturb corresponding other switch contact pair 3,4 and 12,13 by flexibility, thereby and significantly quicken electric arc 21 so that described electric arc apace from the switch contact 3 of respective fixation or 12 and movable switch contact 4 or 13 between voltage contact area draw. Switch contact pair 3,4 and 12,13 opposite sensing can be in the magnetic fields 23 of strengthening generation in switch contact pair 3,4 and 12,13 zones when voltage contact area is drawn or blow out electric arc 21.
The switch contact pair 3,4 and 12,13 of double-break protection switch 1 is arranged to make electric current 22 to produce the blow-out coil of driveing electric arc 21.The magnetic field 23 of single electric rail also help corresponding other switch contact pair 3,4 and 12,13 or corresponding other voltage contact area so that rapid movement electric arc 21.
Electric current 22 flows to by first electric arc 21 by the first fixing switch contact 3 on the first movable switch contact 4 in separately switch contact 3,4 and 12,13 backs in double-break protection switch 1.The electric conductor 30 of electric current by flexibility flows on the second movable switch contact 13 from the first movable switch contact 4, and this electric conductor especially constitutes twisted wire.Electric current further flows on second switch contact of fixing 12 from the second movable switch contact 13 by second electric arc 21.Produce the blow-out coil of driveing electric arc 21 by described electric current 22.The magnetic field of strengthening or the arc blow-out field 23 of blow-out coil are opened switch contact 3,4 and were worked in 12,13 o'clock in minimum, and drive the electric arc 21 of generation towards the direction of the arc control device 5,14 of double-break protection switch 1 at once.
A kind of advantage of such double-break protection switch 1 is to quicken the electric arc 21 of generation and be associated therewith electric arc 21 is incorporated in the arc control device 5,14 fast forcefully by the high-intensity magnetic field that produces or arc blow-out field 23 opening switch contact 3,4 and 12,13 backs.By electric arc 21 being incorporated into fast the time of staying that can reduce electric arc 21 between switch contact pair 3,4 and 12,13 in the arc control device 5,14.This result who brings is, reduces the arc load between fixing switch contact 3,12 and movable switch contact 4,13, can save the contact material of switch contact 3,4 and 12,13 thus.Therefore a kind of such double-break protection switch 1 has higher short switch performance than the double-break protection switch of known same structure size.Thereby, make the contact site of switch contact 3,4 and 12,13 unload by the electric conductor 30 of flexibility with opening switch contact 3,4 and 12, the 13 back conductions connections that between movable switch contact, realize.
The vertical view of the interior zone of a kind of double-break protection switch 1 shown in Figure 2, this protection switch is according to constituting by design principle of the present invention.Reverse 180 ° of ground and switch contact pair 3,4 and 12,13 is set becomes high-visible in described view, wherein switch contact pair 3,4 and 12,13 is arranged side by side.Between the first movable switch contact 4 and the second movable switch contact 13, flexible electric conductor 30 is set.Move along with the motion of movable switch contact 4,13 at this flexible lead 30, and the conduction that does not lose the electric conductor 30 by flexibility connects.
The side cutaway view of the embodiment of a kind of protection switch 1 shown in Figure 4, this protection switch has arc-control device 20, and this arc-control device is according to constituting by design principle of the present invention.The lower end 5a that guide rail 6,15 relative set especially are welded on first arc control device 5 goes up or on the lower end 14a of second arc control device 14.First contact arm 7 extends between the upper end of the first end of coil 2 and first arc control device 5, and second contact arm 16 extends between the upper end 14b of first guide rail 6 and second arc control device 14.First contact arm, 7 preferred weld are on the winding of coil 2.Fixing switch contact 3,12 is arranged on the corresponding contact arm 7,16.
Comprise that the coil 2 of its coil core 2a and the structure of two block plates 9 can produce strong magnetic field 11 at cup 17 or in preceding chamber region, sense on the steel plate 9 by coil 2, wherein have only steel plate shown in Figure 4 with Reference numeral 9, this magnetic field is used for being squeezed in electric arc 21 between the first movable switch contact 4 and the first fixing switch contact 3 towards the direction of first guide rail 6, and be squeezed in second electric arc between the second movable switch contact 13 and the second fixing switch contact 12 towards the direction of second guide rail 15, promptly directly be transferred in this guide rail.Therefore electric arc is present between respective track 6,15 and the corresponding contact arm 7,16, thereby and be pressed in the corresponding arc control device 5,14 by magnetic field 11 and the arc blow-out field that produces, at last in that they extinguish there.
Electric arc can be quickened in strong magnetic field 11 between metallic plate 9, thus and the load of reduction switch contact 3,4,12,13.Therefore can save the contact material on the switch contact 3,4,12,13.The protection switch 1 of Gou Chenging has higher short switch performance than the double-break protection switch of known same structure size like this.Separating switch contact pair 3,4 and 12,13 o'clock unloading contacts site.
Protection switch by Fig. 4 preferably constitutes circuit protecting switch or circuit breaker.
By making electric arc 21 force fast to enter in the corresponding arc control device 5,14, very well prevent to damage protection switch 1 by magnetic field 11 that between metallic plate 9, produces and the arc blow-out field 23 that produces.Especially in surpassing the current range of 63A and have above in the protection switch 1 of the switch performance of 25kA promptly in the high power protection switch in protection switch 1 special setting contact system and coil 2 be favourable.Protection switch 1 makes following situation become possibility, can make the electric arc that produces when cutting off force to enter in the arc control device 5,14 from cup 17 as quickly as possible, so that do not damage protection switch 1 switch contact 3,4 and 12,13 especially in cup.
Claims (11)
1. be used for the double-break protection switch (1) of supervisory circuit, it comprises
Be used to handle the coil (2) of decoupler,
The first switch contact pair, it has the first fixing switch contact (3) and the first movable switch contact (4), and
Second switch contact pair, it has the second fixing switch contact (12) and the second movable switch contact (13), and wherein said movable switch contact (4,13) can be handled by decoupler,
Switch contact (3) conduction that first arc control device (5) with first guide rail (6) and first contact arm (7), this first contact arm and first are fixed is connected,
Switch contact (12) conduction that second arc control device (14) with second guide rail (15) and second contact arm (16), this second contact arm and second are fixed is connected,
It is characterized in that,
The first switch contact pair (3,4) is reversed 170 ° to 190 ° ground with respect to second switch contact pair (12,13) and is arranged on second switch contact pair (12,13) next door, and be provided with flexible electric conductor (30) between the first movable switch contact (4) and the second movable switch contact (13), this electric conductor conduction connects the first movable switch contact (4) and the second movable switch contact (13).
2. double-break protection switch according to claim 1 (1) is characterized in that, flexible electric conductor (30) is a twisted wire.
3. according to aforementioned claim 1 or 2 described double-break protection switches (1), it is characterized in that the first switch contact pair (3,4) is parallel to and reverses 180 ° of ground settings with respect to second switch contact pair (12,13).
4. according at least one described double-break protection switch (1) in the aforementioned claim 1 to 3; it is characterized in that; first switch contact pair (3,4) and second switch contact pair (12,13) are positioned at cup (17); this cup is made of two arc control device (5,14), and wherein cup (17) is between first arc control device (5) and second arc control device (14) with respect to the setting of first arc control device (5) mirror-inverted ground.
5. according at least one described double-break protection switch (1) in the aforementioned claim 1 to 4; it is characterized in that; be provided with the metallic plate (9) of two settings parallel to each other, switch contact pair (3,4,12,13) and at least a portion first guide rail (6,15) and first contact arm (7,16) are set between described metallic plate.
6. double-break protection switch according to claim 5 (1) is characterized in that, the coil axis (10) of coil (2) perpendicular to or the plane of almost extending therein perpendicular to metallic plate (9) extend.
7. according to claim 5 or 6 described double-break protection switches (1), it is characterized in that coil (2) is arranged between the metallic plate (9).
8. according at least one described double-break protection switch (1) in the aforementioned claim 5 to 7; it is characterized in that; metallic plate (9) is arranged to make between metallic plate (9) with respect to coil (2) and can be produced magnetic field (11), and sense on the metallic plate (9) by coil (2) in this magnetic field.
9. according at least one described double-break protection switch (1) in the aforementioned claim 5 to 8; it is characterized in that the rotational plane that movable switch contact (4,13) is movable therein and the guide rail (6,15) of arc control device (5,14) and contact arm (7,16) are parallel or almost be parallel to metallic plate (9) and extend.
10. according at least one described double-break protection switch (1) in the aforementioned claim 1 to 9; it is characterized in that; the first fixing switch contact (3) is arranged on first contact arm (7) as contact plate, and the second fixing switch contact (12) is arranged on second contact arm (16) as contact plate.
11., it is characterized in that protection switch (1) is circuit breaker or circuit protecting switch according at least one described double-break protection switch (1) in the aforementioned claim 1 to 10.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102010019432A DE102010019432A1 (en) | 2010-05-05 | 2010-05-05 | Double-breaking circuit breaker for monitoring a circuit |
| DE102010019432.8 | 2010-05-05 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102237230A true CN102237230A (en) | 2011-11-09 |
| CN102237230B CN102237230B (en) | 2015-04-08 |
Family
ID=44511633
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110115252.5A Expired - Fee Related CN102237230B (en) | 2010-05-05 | 2011-05-05 | Double interrupted protective switching device for monitoring circuit |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP2385537B1 (en) |
| CN (1) | CN102237230B (en) |
| DE (1) | DE102010019432A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110235215A (en) * | 2016-09-09 | 2019-09-13 | 迈科伊莱翠卡赛提飞卡股份公司 | Improved contactor arrangement for high-intensity currrent switching application |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102011080525A1 (en) * | 2011-08-05 | 2013-02-07 | Siemens Aktiengesellschaft | Double protective switching device e.g. circuit breaker switch, has chambers for extinguishing arcs formed during opening of switching contacts such that arcs are oriented in opposite directions in one phase of arc formation |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3133175A (en) * | 1960-10-05 | 1964-05-12 | Cutler Hammer Inc | Shockproof electromagnetic contactor having arc chute and blowout assembly and pivoted contact carriage means |
| US4831347A (en) * | 1985-07-12 | 1989-05-16 | Square D Company | Air break contactor |
| FR2814851A1 (en) * | 2000-10-03 | 2002-04-05 | Hager Electro | High power protection electrical security apparatus having two series mounted electromagnetic circuit breakers sharing housing and having chamber/arming unit. |
| CN1388546A (en) * | 2001-05-28 | 2003-01-01 | 富士电机株式会社 | Moulded box-type circuit breaker |
| CN1764995A (en) * | 2003-04-30 | 2006-04-26 | 西门子公司 | Electromechanical switching device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE928655C (en) * | 1951-08-08 | 1955-06-06 | Siemens Ag | Extinguishing arrangement with extinguishing plates for DC switch |
| JPH071657B2 (en) * | 1989-09-18 | 1995-01-11 | 三菱電機株式会社 | Circuit breaker |
| DE69828147T2 (en) * | 1997-09-18 | 2005-12-15 | General Electric Co. | CURRENT LIMITING POWER SWITCH WITH POWER SWITCHING |
| EP1548772A1 (en) | 2003-12-22 | 2005-06-29 | ABB Schweiz Holding AG | Arc extinguishing installation for a circuit breaker with a double break |
-
2010
- 2010-05-05 DE DE102010019432A patent/DE102010019432A1/en not_active Withdrawn
-
2011
- 2011-04-06 EP EP11161311.3A patent/EP2385537B1/en not_active Not-in-force
- 2011-05-05 CN CN201110115252.5A patent/CN102237230B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3133175A (en) * | 1960-10-05 | 1964-05-12 | Cutler Hammer Inc | Shockproof electromagnetic contactor having arc chute and blowout assembly and pivoted contact carriage means |
| US4831347A (en) * | 1985-07-12 | 1989-05-16 | Square D Company | Air break contactor |
| FR2814851A1 (en) * | 2000-10-03 | 2002-04-05 | Hager Electro | High power protection electrical security apparatus having two series mounted electromagnetic circuit breakers sharing housing and having chamber/arming unit. |
| CN1388546A (en) * | 2001-05-28 | 2003-01-01 | 富士电机株式会社 | Moulded box-type circuit breaker |
| CN1764995A (en) * | 2003-04-30 | 2006-04-26 | 西门子公司 | Electromechanical switching device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110235215A (en) * | 2016-09-09 | 2019-09-13 | 迈科伊莱翠卡赛提飞卡股份公司 | Improved contactor arrangement for high-intensity currrent switching application |
| US11037745B2 (en) | 2016-09-09 | 2021-06-15 | Microelettrica Scientifica S.P.A. | Contactor device for high current switching applications |
| CN110235215B (en) * | 2016-09-09 | 2021-11-09 | 迈科伊莱翠卡赛提飞卡股份公司 | Contactor arrangement for high intensity current switching applications |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102010019432A1 (en) | 2011-11-10 |
| EP2385537B1 (en) | 2017-05-31 |
| CN102237230B (en) | 2015-04-08 |
| EP2385537A1 (en) | 2011-11-09 |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150408 |