CN105097376A - Circuit breaker with arc extinguishing barrier - Google Patents
Circuit breaker with arc extinguishing barrier Download PDFInfo
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- CN105097376A CN105097376A CN201510114401.4A CN201510114401A CN105097376A CN 105097376 A CN105097376 A CN 105097376A CN 201510114401 A CN201510114401 A CN 201510114401A CN 105097376 A CN105097376 A CN 105097376A
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- China
- Prior art keywords
- circuit breaker
- contact elements
- operating position
- barrier
- mobile barrier
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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
- H01H9/32—Insulating body insertable between contacts
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/02—Housings; Casings; Bases; Mountings
- H01H71/0207—Mounting or assembling the different parts of the circuit breaker
- H01H71/0221—Majority of parts mounted on central frame or wall
Abstract
A circuit breaker is described, comprising: - at least a first contact branch comprising at least a first contact element and at least a first support element of the first contact element, at least a first connection terminal electrically connected to, or integrated into, the first support element; - an actuating mechanism of the first support element adapted to move the latter so that the first contact element can be moved from a rest position to a working position and vice versa; - a second contact branch comprising at least a second contact element, adapted to be contacted by the first contact element when this is in the working position, at least a second support element of the second contact element and at least a second connection terminal electrically connected to, or integrated into, the second support element; characterized in that the circuit breaker further comprises an electrically insulating mobile barrier adapted to be moved between: a first operating position wherein the mobile barrier allows the second contact element to be contacted by the first contact element; and a second operating position wherein the mobile barrier (60) is at least partially operatively interposed between the first contact element and the second contact element to interfere, in the passage of the first contact element from the working position to the rest position, with an electric arc that extends between said contact elements.
Description
Technical field
The disclosure relates to the technical field of electric device, and more specifically about the circuit breaker with arc extinguishing barrier.
Background technology
As is known, circuit breaker comprises circuit, and it comprises at least two contact elements, and wherein at least one contact elements can move to off-position from open position and the mobile contact that vice versa.At open position, two contact elements are spaced apart and the circuit of circuit breaker is open circuit.On the contrary, in off-position, two contact elements are connected with each other and the closing of circuit of circuit breaker.In the circuit breaker of some type, such as molded case circuit breaker, in order to the electric arc being conducive to triggering in the opening/closing process by the circuit of circuit breaker is eliminated, generally provide the so-called deionization unit in the interior chamber being contained in the circuit breaker being called arc control device.
The parameter of performance characterizing circuit breaker is so-called short-circuit capacity, and it is defined as circuit breaker can interrupt reaching maximum operation for three times and can not the damaged and immovable maximum short circuit current of its protective feature under operating voltage.Current strength under connecting-disconnecting function is significantly higher than the maximum rated current (several order of magnitude) of circuit breaker.The latter is another characterisitic parameter and is defined as to support by circuit breaker the maximum current reaching Infinite Time.
Connecting-disconnecting function is architectural feature (such as, such as, the size of the size of circuit breaker, deionization unit and arc control device depending on circuit breaker, and whether there is the element being suitable for deflecting electric arc, such as, such as, the ferromagnetic element described in European patent EP 1998349A1) parameter.
Summary of the invention
The object of this invention is to provide other solution allowing the performance improving circuit breaker in short-circuit capacity.
This object can be realized by circuit breaker architecturally-defined in claim 1.Preferred and the favourable embodiment of described circuit breaker defines in appended dependent claims.
Accompanying drawing explanation
By referring to the following detailed description of the specific embodiment that accompanying drawing provides in an illustrative manner, the present invention will be better understood, and therefore described embodiment is never restricted, wherein:
-Fig. 1 is the graphics of the embodiment of circuit breaker;
-Fig. 2 is the side plan view of the circuit breaker of Fig. 1 that the first and second shells linked together are shown;
-Fig. 3 is the graphics of the circuit breaker of Fig. 1, wherein mainly can see the upper surface of circuit breaker;
-Fig. 4 is the side cross-sectional view of the first possibility embodiment of the circuit breaker of Fig. 1.
-Fig. 5 is the side cross-sectional view of the circuit breaker of Fig. 4, and shown in it, two shells are separated from each other;
-Fig. 6 is the graphics of the first shell of the circuit breaker of Fig. 1;
-Fig. 7 is the graphics of the second housing of the embodiment of the circuit breaker of Fig. 4, wherein can see multiple mobile arc extinguishing barrier;
-Fig. 8 is the plane graph of the first contact branch road of the circuit breaker that Fig. 1 is shown respectively, the second contact branch road and mobile arc extinguishing barrier, and wherein said elements is in the first operative configuration;
-Fig. 9 is the plane graph that the first contact branch road of Fig. 8, the second contact branch road and mobile arc extinguishing barrier are shown, wherein said elements is in the second operative configuration.
-Figure 10 is the plane graph that the first contact branch road of Fig. 8, the second contact branch road and mobile arc extinguishing barrier are shown, wherein said elements is in the 3rd operative configuration.
-Figure 11 is the graphics of the second contact branch road of Fig. 8 to Figure 10 and the partial cross section of mobile arc extinguishing barrier, and wherein the second contact branch road and mobile barrier are the configuration of Fig. 8 and Fig. 9;
-Figure 12 is the graphics of the first variant embodiment of the second housing of Fig. 7, and it comprises multiple mobile arc extinguishing barrier, and wherein said barrier is shown in the first operating position;
-Figure 13 is the graphics of the shell of Fig. 7, wherein moves arc extinguishing barrier and is shown in the second operating position; With
-Figure 14 is the plane graph of the second variant embodiment of the second housing of Fig. 7, and it comprises multiple mobile arc extinguishing barrier, and wherein said barrier is shown in the first operating position;
-Figure 15 is the plane graph of the shell of Figure 14, wherein moves arc extinguishing barrier and is shown in the second operating position.
In the drawings, same or analogous element indicates by identical reference number.
Embodiment
With reference to accompanying drawing, the non-limiting embodiments of circuit breaker is shown, overall by 1 instruction.In the specific embodiment of Fig. 1, circuit breaker 1 is such as molded case circuit breaker.Molded case circuit breaker (contrary with " open " circuit breaker) has the housing be made up of insulating material; it is except providing the protection from external agency impact, also can support the internal circuit of circuit breaker and mechanism and the terminal for being connected to outside line and load circuit.
At present, molded case circuit breaker general protective device that is used as in distribution, industrial automation and high-level service field interrupts having such as up to the electric current of the value of 3200A.Due to such as market needing various types of molded case circuit breaker, it is each is equipped with or is not equipped with inner Aftercurrent protecting equipment, so some manufacturers in industry provide the dissimilar commercially available molded case circuit breaker with difference in functionality.A kind of molded case circuit breaker of possibility type is such as represented by the automatic circuit breaker with magnetic pattern of fever trip system (it only comprises electromechanical assembly in practice).The molded case circuit breaker of another kind of possibility type is the automatic circuit breaker such as with electron type trip system, and wherein trip system is by Electronic Control locking.
In the accompanying drawings shown in and in the instantiation that will describe below, circuit breaker 1 is multipole circuit breaker, particularly three-pole breaker.According to variant embodiment, circuit breaker 1 is four-pole circuit breaker.But the instruction of this specification also extends to the circuit breaker of the pole (such as one pole or bipolar) with varying number.
From now on, we with reference to (and therefore not introducing any restriction) wherein circuit breaker 1 be the situation of (as illustrated in the drawing in example) multipole molded case circuit breaker.
With reference to figure 1 and Fig. 2, according to favourable and unrestriced embodiment, circuit breaker 1 comprises the first shell 10 such as, be made up of electrical insulating material (such as, resin), and also by electrical insulating material (such as resin) make and be couple to the second housing 20 of the first shell 10.Shell 10 and 20 such as by injection moulding be separated from each other two pieces of formation.In above-mentioned favourable embodiment, with reference to figure 5, circuit breaker 1 comprises at least one tightening member 31,32, and it is adapted to be and couples and keep the first housing 10 and the second housing 20 integral with one another.Multiple tightening member 31,32 is preferably provided.According to an embodiment, at least one tightening member 31,32 is adapted to be and detachably couples two shells 10,20, and is such as realized by one or more screws 31,32 or one or more pairs of screw 31,32.In alternative embodiments, at least one retaining element 31,32 is non-detachable retaining elements, and is such as realized by least one rivet.In instantiation shown in the figure, multiple tightening member is with several screw or several to screw 31, (it is through the first shell 10, be inserted in the suitable fixing hole (seat) 42 of second housing 20) form and provide with several screw or several form to screw 32 (first it through second housing 20, be inserted in the suitable fixing hole 41 be arranged in the first housing 10).
According to possible embodiment, the first shell 10 comprises the first housing parts 11 and second housing part 12, and described first and second housing parts are such as made by injection moulding be separated from each other two pieces and are couple to together.Second housing part 12 is operationally plugged between the first housing parts 11 and second housing 20.Preferably, the first shell 10 comprises the lid 13 being removably couple to the first housing parts 11.Lid 13 is such as couple to the first housing parts 11 by the mode of screw (it, through described lid 13, is inserted in the respective threaded securing bores be arranged in the first housing parts 11).
With reference to figure 6, according to favourable embodiment, the first shell 10 comprise above 4 with relative before below 5, and second housing 20 is couple to the first housing 10 in 5 sides from behind.In order to carry out the object of this description, what " above " referred in the normal use procedure of circuit breaker 1 first shell 10 is mounted opposite the face of wall (wall of such as electrical panel) in the face of operator.Preferably but do not limit, after first shell 10,5 have the ledge 6 and recessed portion 7 that limit ladder, and second housing 20 is disposed in above ledge 6 on recessed portion 7, also give total profile of the assembly cuboid formed by the first shell 10 and second housing 20 for ladder described in leveling.In addition the shape of second housing 20 is preferably as half shell with quadrangle or roughly quadrangle.
Circuit breaker 1 also comprises manual overvide 3, such as rotatable control lever 3.Manual overvide 3 alternately can move corresponding respectively between the opening operation state of molded case circuit breaker 1 and two positions of shutoff operation state.Manual overvide 3 is such as through the opening be arranged in the first shell 10.Preferably, manual overvide 3 before the first shell 10 4 give prominence to.Manual overvide 3 also can be activated by the tracker action (shown in Fig. 5 of such as European patent EP 2001036B1) being couple to molded case circuit breaker.
Manual overvide 3 is operably connected to and is held by the first shell 10 and the actuating mechanism supported be adapted to be and determine that circuit breaker 1 switches between opening and closing two modes of operation.Dissimilar actuating mechanism is known for the technical staff that can use in the field of circuit breaker 1, and because this reason, thinks that the more detailed detailed description to this mechanism is unnecessary in this specification.Generally speaking, actuating mechanism can comprise control lever, flexible member, connecting rod, rotary-actuated mechanism 15 (visible in Fig. 8 to Figure 10), as such as described in European patent EP 2259278B1 etc.From now on, actuating mechanism by indicated by reference number 15 in its a lot of parts any one.
With reference to figure 8 to Figure 10, circuit breaker 1 comprises at least one first contact branch road C1, and it comprises at least one first support component S1 of at least one first contact elements P1 and the first contact elements P1, is electrically connected to or is integrated at least one first splicing ear T1 of the first support component S1.The actuating mechanism 15 of the first support component S1 is adapted to be and the first support component is moved make the first contact elements P1 can from dormancy position (rest, dormancy position) (shown in Fig. 8) move to service position (shown in Fig. 9), and vice versa.
According to preferred embodiment, the first contact elements P1 and the second contact elements P2 is the pad be made up of high conductive material (silver alloy such as sintered).
Preferably and without limitation, the first shell 10 holds and supports the first contact branch road C1 and actuating mechanism 15.In other words, the first shell 10 carries out the support function for the first contact branch road C1 and actuating mechanism 15.
In addition, circuit breaker 1 comprises the second contact branch road C2, and it comprises at least one second contact elements P2, is adapted to be and is contacted by the first contact elements P1 when being in service position; At least one second support component S2 and at least one the second splicing ear T2 being electrically connected to or being integrated into the second support component S2 of second contact elements P2.As being clear that in the figure 7, preferably and without limitation, the second housing 20 holds and supports the second contact branch road C2.In other words, second housing 20 carries out the support function for the second contact branch road C2.
Should note, although the shell providing circuit breaker 1 is divided into the first shell 10 and second housing 20 and the first contact branch road C1 is arranged in the first shell 10 and the second contact branch road C2 embodiment be arranged in second housing 20 is favourable, but the instruction of this specification is not limited to the shell of the circuit breaker of particular type, this is because such instruction is applicable to have the molded case circuit breaker of single shell or the open circuit breaker of even number too.
Circuit breaker 1 also comprises electric insulation and is adapted to be mobile barrier 60 or the mobile arc extinguishing barrier (hereafter also being indicated by " mobile barrier ") of movement between with upper/lower positions:
-the first operating position, such as, represented by Fig. 8,9 and 11, wherein moves barrier 60 and allows the second contact elements P2 to be contacted by the first contact elements P1, as shown in Figure 9; With
-the second operating position, such as, represented by Figure 10, wherein move barrier 60 be operationally plugged at least partly between the first contact elements P1 and the second contact elements P2 with the first contact elements P1 from service position to dormancy position process disturb in the described electric arc extended contact elements P1, P2.For this reason, mobile barrier 60 can be called as mobile arc extinguishing barrier.For the object that this describes, statement " interference arc " is equal to the object in order to eliminate electric arc more fast " shift, lengthen, divide and/or interrupt electric arc ".
Preferably, mobile barrier 60 is made up of electrical insulating material (such as polyamide, preferably by glass fiber reinforcement).More preferably, mobile barrier 60 by electric insulation and (self-extinguishing, the automatic distinguishing) material that certainly goes out make.
According to favourable embodiment, above-mentioned electrical insulating material has been added gasification materials, such as such as, phosphorus, namely when a kind of material standing raised temperature (all reach when electric arc is triggered and discharge the temperature that it allows to be conducive to the gas eliminating electric arc near circuit breaker internal and contact elements).
Preferably, mobile barrier 60 can rotate moving axis rotation to turn to above-mentioned second operating position from above-mentioned first operating position, and vice versa.
When in as directed example, circuit breaker 1 is multipole wherein, at least one first contact branch road C1 and at least one the second contact branch road C2 is each comprises multiple contact branch road, to be eachly associated with the respective electric phase place of circuit breaker 1.When multipole circuit breaker 1, easily, actuating mechanism 15 is shared for each contact branch road, and it is controlled by common actuation element 3.When circuit breaker Fig. 1 is multipole wherein, circuit breaker 1 preferably includes multiple mobile barrier 60, is eachly associated with the respective electric phase place of circuit breaker 1.Preferably, described mobile barrier 60 can move independently of one another.
Preferably, as shown in Figure 8 and Figure 9, first support component S1 is conductive arm, its directly or indirectly and the first housing 10 hinged rotationally angularly to rotate between position the dormancy position (Fig. 8) and service position (Fig. 9) that correspond respectively to the first contact elements P1 two.Obviously, these positions correspond respectively to opening operation state and the shutoff operation state of circuit breaker 1.According to preferred embodiment, such as, as shown in Fig. 8 to Figure 13, the rotation axis of mobile barrier 60 and the rotation axis of the first support component S1 parallel to each other.
Such as, the first support component S1 is conductive arm, and it is such as made of copper, and is attached to actuating mechanism 15, and the first actuating mechanism is hinged to the first housing 10 rotationally, is supported and be made up of electrical insulating material by it.Therefore, it is possible to provide: this between conductive arm and actuating mechanism 15 be combined in any case and provide in a way known cursor and therefore the first support component S1 relative to the possibility of the unnecessary movement of actuating mechanism 15, such as with repair contact elements P1, P2 wearing and tearing or to compensate any misalignment.
When providing multiple first contact branch road C1 wherein, each in these branch roads is equipped with the first support component S1 and the first all support component S1 is preferably attached to identical actuating mechanism 15 and identical actuating mechanism.
With reference to figure 8 to Figure 10, according to an embodiment, the first contact branch road C1 comprises conductor bar 18, and it is such as made of copper, have end (being such as provided with through hole), and this is the first splicing ear T1.Such as, splicing ear T1 is a part for not shown splicing ear, or is electrically connected to described splicing ear.Preferably conductor bar 18 directly or the intervention of the conduction binding 17 be soldered to by one end of compliant conductive braid 16, is electrically connected to the first support component S1 via compliant conductive braid 16.In the case of the latter, the binding 17 that conducts electricity such as is riveted to conductor bar 18.
For the object of this specification, " conductor bar " refers to the conductor with cross section, preferred quadrangle, more preferably rectangle, such as to guarantee that conductor has certain rigidity, the conductor (such as electric wire, cable, or wire rod fabric) of this and relative flexibility is different.
With reference to figure 8 to Figure 11, according to possible non-limiting embodiments, second support component S2 comprises transfer arm 27, it is such as made of copper, be adapted to be the rotation of permission second contact elements P2, make when such as making the electric current of very high strength (being under any circumstance greater than the rated current of circuit breaker 1) flow through circuit branch C1, C2 due to short circuit, because repelling effect can rotate relative to the first contact elements P1.For the object of this explanation, repelling effect refers to a kind of physical phenomenon, on this basis, contact elements P1, P2 contacts with each other and under having the condition of electric current contrary (cross) of very high strength, two conductors 27 and S1 stand to trend towards because of the electric power of movement away from each other by the high-intensity currrent contrary in the opposite direction flowed wherein.
According to above-described embodiment, second support component S2 also comprises at least one flexible member 26, it to act on transfer arm 27 by compressing or stretching and to be configured under the condition of the normal running of circuit breaker 1, keep the second contact elements P2 as far as possible near the first contact elements P1 when the first contact elements P1 is in service position, as shown in Figure 9.Preferably, in the above-described embodiments, the P2 of maintenance second contact elements is moved, trended towards to the effect that mobile barrier 60 is adapted to be by transfer arm 27 against at least one flexible member 26 pairs of transfer arms 27 as far as possible near the first contact elements P1.Conversely, transfer arm 27 is adapted to be participation (interfere, interfere) and connects that described mobile barrier 60 is remained on the first operating position (Fig. 8, Fig. 9 and Figure 11) with mobile barrier 60.It should be noted that in the above-described embodiments, mobile barrier 60 is adapted to be and moves to move to the second operating position from the first operating position by transfer arm 27, and vice versa.
According to preferred embodiment, the rotation axis of mobile barrier 60 and the rotation axis of transfer arm 27 parallel to each other.
In the embodiment shown in Fig. 4 to Fig. 5 and Fig. 7 to Figure 13, the second support component S2 comprises two flexible members 26, particularly two spiral metal springs, and it is worked by the traction acted on transfer arm 27.Still in these embodiments, the second support component S2 comprises fixed conductor bar 28, and it is such as made of copper, and with second housing 20 all-in-one-piece example, transfer arm 27 is hinged to fixed conductor bar 28 rotationally.In example shown in the figure, the end of fixed conductor bar 28 represents the second splicing ear T2.Such as, the second splicing ear T2 is a part for the splicing ear of the circuit breaker 1 do not illustrated in the drawings, or is electrically connected to this splicing ear.
Such as, transfer arm 27 is hinged to pin 39 rotationally, and it is such as provided with forked ends, in figures 4 and 5 as seen, assembles across described pin 39.Preferably, pin 39 is made of copper.According to embodiment, fixed conductor bar 28 is bent to limit the first groove being adapted to be and holding pin 39, and pin can leave standstill or be fixed to fixed conductor bar 28, and it remains on original place by transfer arm 27 with by least one flexible member 26 in instances.If fixed conductor bar 28 is bent to limit the second groove of relative first groove, then can provide: the second support component S2 comprises another pin 49, and it is such as formed from steel, and the first end of at least one flexible member 26 is attached on another pin.Another pin 40 can be provided, it is such as formed from steel, give prominence to to this second end that can be attached at least one flexible member 26 from transfer arm 27.Such as, pin 40 engages and embeds in transfer arm 27, and passes transfer arm to make it give prominence to from two relative sides.By this way, can be incorporated into transfer arm 27, a pair flexible member 26.It should be noted that this sample loading mode of two confronting grooves 49 in order to have the fixing hole as two pins 39 using it realizes fixed conductor bar 28, be enough to shaping fixed conductor bar 28 and make one end thereof have S or Z-shaped.
According to favourable embodiment, the second support component S2 comprises shielding part 69, and it is made up of ferromagnetic material, such as, be fabricated from iron, and is between transfer arm 27 and fixed conductor bar 28, is adapted to be the repelling effect reduced between transfer arm 27 and fixed lever conductor 28.
According to preferred embodiment, with reference to Figure 11, mobile barrier 60 comprises two parallel to each other or substantially parallel sidewalls 62, wherein only has one to be visible in fig. 11; And the center bridge joint wall 61 between sidewall 62.Center bridge joint wall 61 traverse is to sidewall 62 and be adapted to be and serve as applicable interference arc with the shielding part element making it deflect, to extend and/or break.Refer again to Figure 11, according to an embodiment, mobile barrier 60 comprises and connects sidewall 62 and perpendicular to the cross member 64 of sidewall.This cross member 64 separates from center bridge joint wall 61, makes to be limited to mobile barrier 60 between cross member 64 and center bridge joint wall 61 and is in the opening (Fig. 8,9 and 11) that the first operating position passes by transfer arm 27.In the example shown in Figure 11, transfer arm 27 adjoins with mobile barrier 60, and in shown instantiation (never introducing any restriction), adjoin with cross member 64, to make mobile barrier 60 from the first operating position (as shown in Figure 9) to the second operating position (as shown in Figure 10).In addition, transfer arm 27 adjoins with mobile barrier 60, and the elastic recovery exercised due at least one flexible member 26 pairs of transfer arms 27 is done in order to make mobile barrier 60 from the second operating position (as shown in Figure 10) to the first operating position (as shown in Figure 9).In shown instantiation, and not from any restriction of introducing, because plug 67 inserts the sidewall 62 of (interfere) mobile barrier 60, thus transfer arm 27 to participate in mobile barrier 60 adjacent, turn back to the first operating position to make mobile barrier 60 from the second operating position.
In other words, people can see, in described example, how mobile barrier 60 is adapted to be and is moved by transfer arm 27, described transfer arm participation is adjacent with mobile barrier, and to make mobile barrier move to the second operating position from the first operating position, vice versa.Should remember, except above-mentioned concrete mechanical solution, adjacent for making barrier 60 move to the second operating position and the feature that vice versa from the first operating position based on what provide between transfer arm 27 and barrier 60, also there is the special and equivalent embodiment that other is possible.The usual possible method realizing this result is to provide: as in shown example, the mobile barrier 60 of the first operating position is arranged to across transfer arm 27.The method realizing the another kind of this result possible is to provide: mobile barrier 60 has the through hole being provided with and being passed by transfer arm 27 or the general groove passed by transfer arm 27.
It should be noted that only when making transfer arm 27 move due to the repelling effect in contrast to flexible member 26, mobile barrier 60 moves from the first operating position in above-mentioned general embodiment.Therefore, mobile barrier 60 only to move and manually control device 3 mode can not be in each open circuit (opening) of circuit breaker 1 from the first operating position under overcurrent condition.The general embodiment of above-mentioned manual overvide 3 also has not to be needed the advantage of the special mobile system of the complexity of mobile barrier 60 and makes circuit breaker 1 associated advantages highly reliably.
Preferably, the sidewall 62 of mobile barrier 60 is hinged rotationally rotates with the moving axis that rotates.In fig. 11, this rotation axis is limited by the pin 63 outstanding from sidewall 62.Identical pins can be arranged on another sidewall 62, invisible in fig. 11.Above-mentioned pin 63 can be used such as to make mobile barrier 60 be attached to second housing 20.In example shown in Fig. 8 to Figure 11, the second contact branch road C2 comprises the support frame 70 of the mobile barrier 60 that mobile barrier 60 is hinged to rotationally.
Preferably, scaffold 70 is made up of electrical insulating material.
According to a favourable embodiment, the support frame 70 of mobile barrier 60 comprises the Part I 8a of the deionization unit 8a of circuit breaker 1,8b, and it comprises more sheets of conductive element.Circuit breaker 1 also comprises the Part II 8b of deionization unit, and it is adapted to be the Part I 8a being listed in deionization unit when second housing 20 is couple to the first shell 10.
According to a particularly advantageous embodiment, the first shell 10 comprises arc control device 19, and it holds deionization unit 8a, the Part I 8b of 8b and the opening 9 had in the face of second housing 20.
Should remember, although the embodiment of described example has arc extinguishing unit 8a, 8b of being formed by two different pieces, the instruction of this specification is also applicable to have the circuit breaker of the single arc extinguishing unit not being divided into two different pieces physically.
In the above-described embodiments, with reference to figure 4, Fig. 5 and Fig. 7 to Figure 11, mobile barrier is automatically moved by transfer arm 27, time when the state of the closedown from circuit, short circuit or overcurrent occur, such as with transfer arm 27 mobile due to repelling effect to move away from two contact elements P1, P2, until reach the configuration (, even if make the first support S 1 turn back to dormancy position due to the effect of the automatic release of circuit breaker 1) of Figure 10 wherein.Clearly, the configuration of Figure 10 represents limitation arrangement, this is because undoubtedly, when mobile barrier has arrived stroke end position shown in this Fig, support S 1 arrives dormancy position simultaneously.Should remember, in the above-described embodiments, mobile barrier 60 moves itself to be plugged between two contact elements P1, P2 at least partly, and between two contact elements, have electric arc, therefore electric arc deflects, lengthens and/or divides by mobile barrier 60 to make electric arc near arc extinguishing unit.This causes eliminating more fast of electric arc, thus increases the performance of circuit breaker 1 in breaking capability.
Figure 12 and Figure 13 illustrates the alternate embodiment of second housing 20, it is different from the second housing 20 of Fig. 7, difference is that mobile barrier 60 such as interrupts electric arc, because mobile barrier 60 (coordinating with the electric insulation unit 65 be arranged in circuit breaker 1 at the second operating position represented by Figure 13) forms shielding part, it such as such as interrupts electric arc by covering second contact elements P2.Such as, at the second operating position, mobile barrier 60 is applicable to the above-mentioned electric insulation unit 65 of side joint (flank) to form the shielding part making a P1 and the 2nd P2 contact elements be isolated from each other.Electric insulation unit 65 preferably has open front, and it is adapted to be and receives mobile barrier at least in part when mobile barrier 60 is in the second operating position.
Such as, electric insulation unit 65 is integrated into the support frame of the mobile barrier 60 of the support frame 70 being similar to Figure 11, wherein, preferably, do not provide the sheet material of the part forming deionization unit 8a, but under any circumstance, the part of deionization unit 8b can be arranged in the first shell 10.
Figure 14 and Figure 15 illustrates another alternate embodiment, wherein move barrier 60 around perpendicular to the first support component S1 rotation axis and also rotate perpendicular to the respective rotation axis of the rotation axis of conductive arm 27 in instances.Mobile barrier 60 is such as hinged to the wall of second housing 20 rotationally or is hinged to the support frame of the support frame 70 being similar to Figure 11.
In addition, embodiment shown in Figure 14 and Figure 15 is different from the embodiment of Fig. 7, difference is: be that each in the second support component S2 of the second contact elements P2 only arranges a flexible member 26 and for each electric phase place, provide two mobile barriers 60, it is set to each other side by side to form the shielding part of being isolated by the second contact elements P2 and the first contact elements P1 at the second operating position (Figure 15).
Still with reference to Figure 14 and Figure 15, can provide: mobile barrier has sightless in the drawings wall or arm, it is adapted to be and cooperates to make mobile barrier 60 from the first operating position (Figure 14) with transfer arm 27, and move to the second operating position (Figure 15), vice versa.
Up to now, describe possible embodiment, wherein moved barrier 60 and be adapted to be and moved by the second support component S2, and specifically moved by transfer arm 27.But, alternative embodiment can be provided, wherein move barrier 60 and be adapted to be and moved by the first support component S1.In such embodiments, can provide: the second contact elements P2 can not have motion, this is because it with do not have moving-member second support component S2 one.
According to embodiment, circuit breaker 1 comprises automatic protective system, and it has trip system, is adapted to be and makes the first contact elements P1 enter dormancy position after short circuit or overcurrent situations being detected.The main body of the knowledge of those skilled in the art comprises various types of trip system, complete electro-mechanical kind (automatic magnetic thermal circuit beraker) and by Electronic Control interlock (autoelectrinic circuit breaker).Above-mentioned automatic protective system is not provided with can making any distinction between yet, or is not provided with residual current protecting system.
Obviously, in order to meet accidental and special needs, those skilled in the art can make numerous modifications and variations to above-mentioned circuit breaker 1, but all modifications and variations are included in as defined by the following claims within scope of the present invention.
Claims (16)
1. a circuit breaker (1), comprising:
-at least the first contact branch road (C1), comprises at least the first support component (S1) of at least the first contact elements (P1) and described first contact elements (P1), is electrically connected to or is integrated at least the first splicing ear (T1) of described first support component (S1);
The actuating mechanism (15) of-described first support component (S1), be adapted to be mobile described first support component and can move to service position from dormancy position to make described first contact elements (P1), and move to dormancy position from service position;
-the second contact branch road (C2), comprises at least the second contact elements (P2), is adapted to be and is contacted by described first contact elements (P1) when described first contact elements is in described service position; At least the second support component (S2) of described second contact elements (P2); And be electrically connected to or be integrated at least the second splicing ear (T2) of described second support component (S2);
It is characterized in that described circuit breaker (1) also comprises to be adapted to be the electric insulation of movement between with upper/lower positions and to move barrier (60):
-the first operating position, at described first operating position, described mobile barrier (60) allows described second contact elements (P2) to be contacted by described first contact elements (P1); With
-the second operating position, at described second operating position, described mobile barrier (60) is operationally plugged between described first contact elements (P1) and described second contact elements (P2) at least partly to disturb the electric arc extended described contact elements from described service position described first contact elements (P1) to the process of described dormancy position.
2. circuit breaker according to claim 1 (1), wherein said mobile barrier (60) can rotate moving axis rotation to turn to described second operating position from described first operating position and to turn to described first operating position from described second operating position.
3. circuit breaker according to claim 1 and 2 (1), at least one first support component (S1) wherein said moving axis that can rotate rotates angularly rotate between position the described service position and described dormancy position that correspond respectively to described first contact elements (P1) two.
4. the circuit breaker (1) according to Claims 2 or 3, the rotation axis of wherein said mobile barrier (60) is parallel with the rotation axis of described first support component (S1).
5. according to circuit breaker in any one of the preceding claims wherein (1), wherein said second support component (S2) comprises the transfer arm (27) being adapted to be the moving axis that rotates and rotating, and wherein said circuit breaker (1) also comprises at least one flexible member (26), at least one flexible member described acts on described transfer arm (27) and goes up and be configured under the condition of the normal running of described circuit breaker (1), keep described second contact elements (P2) to be positioned as close to described first contact elements when described first contact elements (P1) is in described service position.
6. circuit breaker according to claim 5 (1), wherein said mobile barrier (60) is adapted to be by described transfer arm (27) mobile to move to described second operating position from described first operating position and to move to described first operating position from described second operating position.
7. the circuit breaker (1) according to any one of claim 2,5 and 6, the rotation axis of wherein said mobile barrier (60) is parallel with the rotation axis of described transfer arm (27).
8. circuit breaker according to claim 6 (1), wherein said transfer arm (27) is adapted to be mobile barrier (60) described in abutment interference described mobile barrier (60) is moved to described second operating position from described first operating position and moves to described first operating position from described second operating position.
9. circuit breaker according to claim 6 (1), wherein, at described first operating position, described mobile barrier (60) is arranged to across described transfer arm (27).
10. circuit breaker according to any one of claim 1 to 4 (1), wherein said mobile barrier (60) is adapted to be by described first support component (S1) mobile.
11. according to circuit breaker in any one of the preceding claims wherein (1), and wherein said mobile barrier (60) is made up of the electrical insulating material being added with the material being adapted to be release gas when the temperature standing to cause due to described electric arc at described barrier (60) raises.
12. according to circuit breaker in any one of the preceding claims wherein (1), comprise arc control device (19), for holding deionization unit (8a, 8b), and wherein at described second operating position, described mobile barrier (60) be adapted to be by itself be plugged on to disturb between described contact elements (P1, P2) described electric arc with by electric arc band to described deionization unit (8a, 8b).
13. circuit breakers (1) according to any one of claim 1 to 11, wherein said circuit breaker (1) comprises the unit (65) be made up of electrical insulating material, and wherein, at described second operating position, described mobile barrier (60) is adapted to be described unit (65) that side joint is made up of electrical insulating material to form the shielding part making described first contact elements (P1) and described second contact elements (P2) be isolated from each other.
14. according to circuit breaker in any one of the preceding claims wherein (1), and wherein said circuit breaker (1) is molded case circuit breaker, and comprises:
-the first shell (10), holds and supports described first contact branch road (C1) and described actuating mechanism (15);
-second housing (20), is couple to described first shell (10) and holds and support described second contact branch road (C2);
-at least one tightening member (31,32), be adapted to be couple described first shell (10) and described second housing (20) and keep described first shell (10) and described second housing (20) integral with one another.
15. circuit breakers according to claim 14, wherein said second housing (20) holds and supports described mobile barrier (60).
16. according to circuit breaker in any one of the preceding claims wherein (1), and wherein said circuit breaker is multipole and wherein:
-at least one first contact branch road (C1) described and described at least one the second contact branch road (C2) is each comprises multiple contact branch road, each contact branch road is associated with the respective electric phase place of described circuit breaker; And
-described actuating mechanism (15) is that shared and described circuit breaker (1) comprises multiple mobile barrier (60) for each branch road, and each mobile barrier is associated with the respective electric phase place of described circuit breaker.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ITRM20140227 | 2014-05-07 | ||
| ITRM2014A000227 | 2014-05-07 | ||
| ITRM2014A000318 | 2014-06-16 | ||
| ITRM20140318 | 2014-06-16 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105097376A true CN105097376A (en) | 2015-11-25 |
| CN105097376B CN105097376B (en) | 2019-01-11 |
Family
ID=53541867
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510114401.4A Active CN105097376B (en) | 2014-05-07 | 2015-03-16 | Breaker with arc extinguishing barrier |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP3140847B1 (en) |
| CN (1) | CN105097376B (en) |
| CL (1) | CL2016002814A1 (en) |
| RU (1) | RU2672852C2 (en) |
| WO (1) | WO2015177817A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102017125685A1 (en) | 2017-11-03 | 2019-05-09 | Schaltbau Gmbh | Switchgear with arc quenching device and arc guide |
| RU188671U1 (en) * | 2019-01-15 | 2019-04-19 | Михаил Аркадьевич Шурдов | Fixed contact circuit breaker |
| CN110571111A (en) * | 2019-09-02 | 2019-12-13 | 浙江正泰电器股份有限公司 | small-sized circuit breaker |
| US11948762B2 (en) | 2021-04-30 | 2024-04-02 | Astronics Advanced Electronic Systems Corp. | High voltage high current arc extinguishing contactor |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0193440A1 (en) * | 1985-02-14 | 1986-09-03 | Telemecanique | Protective switch |
| FR2681725A1 (en) * | 1991-09-20 | 1993-03-26 | Toshiba Kk | Circuit breaker |
| JP2005235670A (en) * | 2004-02-23 | 2005-09-02 | Matsushita Electric Works Ltd | Circuit breaker |
| CN101083186A (en) * | 2006-05-18 | 2007-12-05 | 伊顿公司 | Electrical switching apparatus, and movable contact assemblyand shield therefor |
| US20140048513A1 (en) * | 2012-08-14 | 2014-02-20 | Fuji Electric Fa Components & Systems Co., Ltd. | Circuit breaker |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1494658A (en) * | 2000-11-08 | 2004-05-05 | 通用电气公司 | Apparatus and method for detecting and calculating ground fault resistance |
| JP4650023B2 (en) * | 2005-02-25 | 2011-03-16 | 富士電機機器制御株式会社 | Circuit breaker |
| KR100908373B1 (en) * | 2007-08-20 | 2009-07-20 | 엘에스산전 주식회사 | Drive motor used for closing spring charging device of air circuit breaker |
| JP5402378B2 (en) * | 2009-08-11 | 2014-01-29 | 富士電機機器制御株式会社 | Circuit breaker |
-
2015
- 2015-03-16 CN CN201510114401.4A patent/CN105097376B/en active Active
- 2015-04-22 WO PCT/IT2015/000110 patent/WO2015177817A1/en active Application Filing
- 2015-04-22 RU RU2016142721A patent/RU2672852C2/en active
- 2015-04-22 EP EP15736655.0A patent/EP3140847B1/en active Active
-
2016
- 2016-11-07 CL CL2016002814A patent/CL2016002814A1/en unknown
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0193440A1 (en) * | 1985-02-14 | 1986-09-03 | Telemecanique | Protective switch |
| FR2681725A1 (en) * | 1991-09-20 | 1993-03-26 | Toshiba Kk | Circuit breaker |
| JP2005235670A (en) * | 2004-02-23 | 2005-09-02 | Matsushita Electric Works Ltd | Circuit breaker |
| CN101083186A (en) * | 2006-05-18 | 2007-12-05 | 伊顿公司 | Electrical switching apparatus, and movable contact assemblyand shield therefor |
| US20140048513A1 (en) * | 2012-08-14 | 2014-02-20 | Fuji Electric Fa Components & Systems Co., Ltd. | Circuit breaker |
Also Published As
| Publication number | Publication date |
|---|---|
| CL2016002814A1 (en) | 2017-02-24 |
| RU2016142721A3 (en) | 2018-06-08 |
| RU2016142721A (en) | 2018-06-08 |
| WO2015177817A1 (en) | 2015-11-26 |
| EP3140847A1 (en) | 2017-03-15 |
| EP3140847B1 (en) | 2019-03-06 |
| CN105097376B (en) | 2019-01-11 |
| RU2672852C2 (en) | 2018-11-20 |
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