CN202217628U - Electric switching apparatus used in low-voltage circuit - Google Patents
Electric switching apparatus used in low-voltage circuit Download PDFInfo
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- CN202217628U CN202217628U CN2010206837572U CN201020683757U CN202217628U CN 202217628 U CN202217628 U CN 202217628U CN 2010206837572 U CN2010206837572 U CN 2010206837572U CN 201020683757 U CN201020683757 U CN 201020683757U CN 202217628 U CN202217628 U CN 202217628U
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Abstract
An electric switching apparatus used in a low-voltage circuit comprises a main casing provided with one or more electrodes, a movable component, a driving mechanism and at least one protection device, wherein each electrode comprises an insulating casing provided with at least one first fixed contact; the first fixed contact can be coupled with a corresponding rotary movable contact in a first breaking chamber; and also can be coupled on the corresponding rotary movable contact; for each electrode, the movable component is limited to be used to accommodate an accommodating seat of the movable contact; the driving mechanism is operably connected to the movable component, and enables the movable component to rotate; and the protection device is applicable to a tripping axle in the low-voltage circuit with the switching apparatus plugged therein, which interposes the driving mechanism in case of a failure.
Description
Technical field
The utility model relates to electrical switchgear, automatic circuit breaker that is specifically related to preferably in low-voltage circuit, use or cutter.
Background technology
Known; The switching device that in low-voltage circuit (that is, use up to the voltage of 1000 V AC/1500 V DC use), uses (typically be commonly referred to as " switching device " and hereinafter be collectively referred to as circuit breaker, automatic circuit breaker, cutter and the contactor of " circuit breaker ") is such device: it is designed to allow the concrete part of proper operation circuit and the load that operationally is associated with them.Can realize circuit breaker with various configurations (executive mode that for example perhaps " can extract out "), and circuit breaker generally includes the shell that contains one or more utmost points (pole) with so-called " fixing ", " insertion "; Each utmost point comprises the removable contact of at least one fixed contact and a correspondence, and these contacts are connected to respective terminal to be used for and the importing into/spread out of and be connected of the circuit that is associated.Electrode can be used on to be needed to guarantee in the various solutions of the suitable performance in electric and the mechanical engineering.
Specific driving mechanism causes right the relatively moving of contact, makes contact to taking coupling position (closed circuit breaker) and separation point position (circuit breaker of opening).In specific arc chamber, make contact coupling/uncoupling.
On the convention, the main shaft through being operably connected to removable contact or by means of the moving meter that operationally supports removable contact makes driving mechanism to removable contact generation effect.Usually, moving meter can be made into single, perhaps by means of the modular organization that has via a plurality of modules of interconnecting member (such as bar or tie-rod) assembling.
Driving mechanism is made up of the bracing frame of supporting movement chain usually, and this kinematic chain is equipped with and is operably connected to main shaft perhaps to moving meter at least one element to allow them to move.
Driving mechanism generally includes at least one trip component, and when the fault of for example short circuit or overload in the circuit that is inserted with circuit breaker, occurring, the protective device of circuit breaker activates this trip component; This protective device for example can be heat, magnetic, heat-magnetic or electron type.Usually, driving mechanism interacts with protective device through trip shaft.
At last; Circuit breaker can be equipped with many accessory devices; Accessory device for example comprises the auxiliary contact of the signal of the state that is used to send circuit breaker (open, closed or tripping operation); Be used to open, the closed or actuator of resetting, solenoid actuator, motor actuator, spring charging device, under-voltage and overvoltage disconnect (release), temperature sensor etc.Normally; Regardless of layout, switching device must be quick and reliable in intervention, must guarantee enough life-spans; And must have at last as far as possible compact, be easy to assembling and easy-to-install structure, and can in general manner realize with competitive cost.
Summary of the invention
The purpose of the utility model provides the such switching device with improved function and characteristic.
This purpose is through realizing according to that in accompanying claims, point out and switching device content following description.
Following reference will utilize term " circuit breaker " to describe the switching device according to the utility model as one of embodiment of the utility model of automatic circuit breaker; Particularly, will mention double break point, multipole circuit breaker, promptly be provided with two pairs of contacts to each utmost point.Only the mode with example just is expressly understood the content that this is mentioned, and thinks that describe and illustrated content can be applicable to have low voltage switching device any number of poles (for example, one pole, bipolar, three utmost points and four utmost points), single-break and double break point.
The utility model provides a kind of electrical switchgear that is used for low-voltage circuit; It is characterized in that; This electrical switchgear comprises: the main casing that comprises one or more utmost points; Each of the said utmost point comprises the insulation shell that contains at least one first fixed contact and the removable contact of corresponding rotation, and removable contact has centerbody, and at least one the first arm turns forward from centerbody; The place defines first significant surface in the end of the first arm, its can be coupled at place, the first disjunction chamber said first fixed contact and can with the said first fixed contact uncoupling; Be arranged in the moving meter of main casing, to each utmost point, decide containing seat in the moving meter upper limit, in said containing seat, hold the centerbody of removable contact, wherein said at least one the first arm externally turns forward from containing seat; Driving mechanism, it is connected to moving meter in operation, rotate about rotating shaft to allow it; At least one protective device; It is suitable for the trip shaft that fault in the interior low-voltage circuit that is inserted with electrical switchgear is intervened driving mechanism after taking place; Wherein, Said insulation shell comprises two and half shells; Said two and half shells are coupled along corresponding coupling surface with the mode that realizes self supporting structure each other, and the said coupling between said two and half shells limits internal volume, and said internal volume is suitable for holding at least said first fixed contact, said the first arm and the said first disjunction chamber; Said coupling also limits about the rotating shaft of said removable contact first compartment respect to one another and second compartment, and said first compartment and second compartment are suitable for holding respectively and are used for and the importing into and spread out of first electric terminal and second electric terminal that is electrically connected of the utmost point of said low-voltage circuit.
The insulation shell of each utmost point has two and half shells of coupling each other to realize the comprising corresponding fixed contact and the self supporting structure of removable contact and at least one disjunction chamber at least, so can improve the function and the characteristic of the switching device of known type.Particularly, the utmost point can guarantee the integral moduleization of the electrode structure of switching device.
Description of drawings
Through describing according to the preferred but embodiment of nonexcludability of some of the switching device of the utility model, it is more obvious that feature and advantage will become, and switching device is illustrated as example in the accompanying drawings; In the accompanying drawings:
-Fig. 1 is the perspective view according to the embodiment of the circuit breaker of the utility model;
-Fig. 2 shows the circuit breaker of the Fig. 1 that is coupled to rotary handle;
-Fig. 3 shows the exploded view that can be used on according to the single-break utmost point in the circuit breaker of the utility model, that have associated contact and electric terminal;
-Fig. 4 shows the exploded view that can be used on according to double break point pole in the circuit breaker of the utility model, that have associated contact and electric terminal;
-Fig. 5 shows the utmost point of the Fig. 4 under confined state;
-Fig. 6 is the perspective view of three utmost points of the circuit breaker among Fig. 1, and three utmost points are in the state that intercouples and are under the state of coupling down and with the driving mechanism of the moving meter of circuit breaker;
-Fig. 7 be represent to assemble each other and with the view of a plurality of utmost points of driving mechanism assembling;
-Fig. 8 show with the state of breaker cover coupling under the utmost point-driving mechanism assembly;
-Fig. 9 is the exploded view of module of the moving meter of three-pole breaker;
-Figure 10 shows and acts on the originally moving meter of the four-pole circuit breaker that is assembled together of on one's body the connecting rod of driving mechanism of moving meter;
-Figure 11 shows the inside of the supporting module of moving meter, has wherein held the removable contact with two arms that are coupled to the respective fixation contact;
-Figure 12 is the perspective view according to the circuit breaker of the utility model that comprises differential protection;
-Figure 13 representes the sketch map of electronic protection;
-Figure 14 is the perspective view of shaft bar element of supporting module, forced maneuver (positivemaneuvering) device and the driving mechanism of the moving meter that assembles each other;
-Figure 15 is the perspective view that is coupled to the four-pole circuit breaker of motor actuator, and wherein, relevant jockey is positioned at the position of disconnection;
-Figure 16 shows the insertion of the three-pole breaker that is coupled to corresponding adapter apparatus and carries out;
-Figure 17 shows the confined state that inserts executory circuit breaker and adapter apparatus, adapter apparatus and then be connected to the system of distribution bar (distribution bar);
-Figure 18 is the perspective view that is coupled to the wall of the adapter apparatus among Figure 17 of system of distribution bar;
-Figure 19 is the front view of wall of adapter apparatus of Figure 17 that is coupled to the wall of the circuit breaker among Figure 17;
-Figure 20 is the perspective view that is coupled to the wall of the circuit breaker among Figure 17 of adapter apparatus;
-Figure 21 shows the inside of distribution switchboard, and this distribution switchboard has two adapter apparatus of the system that is connected to bar and is connected to the circuit breaker of one of such adapter apparatus;
-Figure 22 and 23 is respectively framework rear wall and the perspective view of antetheca that is used for the distribution switchboard of Figure 21;
-Figure 24 shows in detail the hook on the framework of Figure 22 and 23.
Embodiment
With reference to the figure that mentions, circuit breaker 1 comprises the main casing (under the confined state of Fig. 8, can easily see) with case 2 and lid 3, with the mode of case 2 and lid 3 defined volumes be coupled case 2 with cover 3, in this volume, hold the parts of circuit breaker 1, this will describe following.Particularly, in the volume of case 2, define the disjunction district of circuit breaker 1, delimit for the volume (housing volume) 4 that holds that intention comprises at least one protective device and cover 3 bottom.
Lid 3 comprises the front shroud 6 with aperture 7, and actuator lever 87 turns forward from the aperture; Front shroud 6 can be disassembled by the operator, so that part is near the interior section of circuit breaker 1.Accessory device such as the circuit breaker 1 of operation rotary handle 9 (Fig. 2) or energy accumulation motor actuator (Figure 15), that be suitable for activating actuator lever 8 can be coupled to front shroud 6.
In case assembled case 2 and lid 3, with reference to Fig. 1, then circuit breaker 1 present the antetheca 11 that limits on lid 3 and lower wall 13, the rear wall 12 that limits case 2, covering 3 and case 2 upper wall 14 and two sidewalls 15 of limiting.
On the outer surface of lower wall 13 and upper wall 14, defined guide groove (guide) 48, it is suitable for taking in and maintaining in their inside the fin (not shown) in the operating position.Such fin is processed by insulating material, and improves the piece electrical insulation of the utmost point of circuit breaker 1.
In addition, in order to improve the integral insulation of circuit breaker 1, first cap member 16 and second cap member 17 or the terminal cap 16,17 that have roughly " L " type (Fig. 2) can be connected to main casing.
Circuit breaker 1 comprises one or more utmost points, representes this one or more utmost points jointly with Reference numeral 18 in the drawings, and each utmost point comprises insulation shell 19.
Under the situation of single-break circuit breaker 1 (Fig. 3), shell 19 inside comprise at least one first fixed contact 25 and the corresponding rotary removable contact 27 with centerbody 28, and the first arm 29 turns forward from centerbody 28.Place, end at the first arm 29 defines first significant surface 32, and they can be in 33 places, the first disjunction chamber and the 25 coupling/uncouplings of first fixed contact.
Under the situation of dual-interruption point breaker 1, shell 19 (Fig. 4) comprises second fixed contact 26 that is connected electrically to second electric terminal 37; In this case, turn forward about second arm 30 of the rotating shaft of removable contact 27 31 and the first arm 29 symmetries centerbody 28 from removable contact 27.Place, end at second arm 30 defines second significant surface 34, and they can be in 35 places, the second disjunction chamber and the 26 coupling/uncouplings of second fixed contact.In shell 19, the second disjunction chamber 35 is positioned at lower position about first Room 33, wherein with circuit breaker 1 vertically be installed as reference, as shown in Figure 1; Both comprise current interruption plate (not shown) disjunction chamber 33,35.
Preferably, fixed contact 25,26 and removable contact 27 be by copper or process based on the material of copper, and preferably weld above that through laser aid and have at least one contact plate based on the layer (for example Ag/Mo, Ag/WC etc.) of silver alloy.The significant surface 32,34 of removable contact 27 that in this way, can coupled to each other/uncoupling and the corresponding significant surface of fixed contact 25,26 are defined.
Each shell 19 comprises two and half shells 40, and this two and half shell 40 is coupled along corresponding coupling surface with the mode that realizes self supporting structure each other.Half shell 40 is formed with the mode at the situation delimit internal volume 41 that makes their couplings; Internal volume 41 is suitable for holding first fixed contact 25, has the removable contact 27 and the first disjunction chamber 33 of relevant the first arm 29; And under the situation of dual-interruption point breaker 1, also hold second arm 30 and the second disjunction chamber 35 of second fixed contact 26, removable contact 27.Limit first compartment 42 and second compartment 43 in addition, they hold first electric terminal 36 and second electric terminal 37 respectively.
Utilize complementary geometry to make the coupling surface of half shell 40; And making it present raised edges 44 (Fig. 3 and 4) and corresponding holding tank (not shown), edge 44 is coupled with the mode that the ionized gas that holding tank generates with the after separating that guarantees 19 couples of contact 25-27 at circuit breaker 1 of shell, 26-27 seals.The coupling of two and half shells 40 also is defined at least one vent cap of ionized gas.The inside of the utmost point 18 in Fig. 5 limits first vent cap 45 and second vent cap 46, and they are communicated with the first disjunction chamber 33 and the second disjunction chamber 35 respectively with the aperture that on the lower wall of circuit breaker 1 13 and upper wall 14, limits.Therefore, terminal cap 16 and 17 (if providing) is presented on the grid that such place, aperture is provided with crack 49.
Circuit breaker 1 can preferably include like lower device: chemistry and physical characteristic that it is suitable for changing the gas of finding time through vent 45 and 46 make them can be more suitable for being discharged into some part itself and the gas-insulated that perhaps guarantees circuit breaker 1 in the atmosphere.Through using metal material or high heat capacity material, for example, can reduce the evacuation temperature of gas; Alternatively, use has the plastic material of gasification property or the composition that material allows to change gas.
In shell 19, also have aperture 51, it allows the moving meter 52 of circuit breaker 1 to pass through; In Fig. 3 to Fig. 5, only can see the part of moving meter 52, moving meter 52 can hold and activate the removable contact 27 of the utmost point 18.Moving meter 52 rotates after the actuating of the driving mechanism that is operably connected to moving meter 52 56: therefore, the demarcation face in aperture 51 with allow moving meter 52 about shell 19 relatively move and the mode of the 51 pairs of substantive sealings of the ionized gases that in disjunction chamber 33,35, produce in aperture is formed.
Under the situation of multipole circuit breaker 1, the disjunction district of circuit breaker 1 itself is that the some utmost points 18 through the type that will before describe are connected to each other and realize; Such utmost point 18 is positioned as side by side, and constitutes the case 2 of circuit breaker 1 through the structure that forms near shell 19, its with lid 3 assemblings with the formation main casing.
Among the embodiment that illustrates in the drawings, a plurality of hollow nails 54 are laterally projecting from the coupling surface of one of half shell 40, and on the coupling surface of second half shell 40, limit a plurality of respective through hole 55.In this way, the qualification insulative pore passage that intercouples between nail 54 and the hole 55, it is horizontally through the sidewall 22 of each shell 19, and settles the utmost point 18 that is used for 18 assemblings of other utmost point in advance.Advantageously, hollow nail 54 and corresponding hole 55 are positioned on the coupling surface with the mode of the interior compartment of not passing shell 19, and said interior compartment is held the contact 25,26,27 and the electric terminal 36,37 of the utmost point 18.
The utmost point 18 is with the mode and the registration of each aperture 51 aligned with each other and insulative pore passage.Particularly, assembly tie-rod 57 is inserted near the insulative pore passage the rear wall 23 of shell 19, and this has guaranteed the mechanical stability of the structure of case 2, and the horizontal Connection Element 58 that is used for being connected with driving mechanism is inserted near the insulative pore passage of antetheca 24.In Fig. 7, show the result of assembling of the parts of the case 2 of forming circuit breaker 1, and the assembling that utilizes the case 2 carried out from least one outstanding forward nail 59 of antetheca 24 of the shell 19 of each utmost point 18 and lid 3 has been shown in Fig. 8.
In a preferred embodiment, the moving meter 52 of multipole circuit breaker 1 has modular construction, and it comprises along a plurality of supporting modules 61 of rotating shaft 60 location of moving meter 52.Each supporting module 61 inserts in the respective aperture 51 of shells 19, and on supporting module 61 with supported module 61 structurally and allow the supporting module 61 required modes that move to be defined for the containing seat 62 of removable contact 27.
Fig. 9 shows the exploded view of parts of the modularization moving meter 52 of three-pole breaker 1, and Figure 10 shows the moving meter 52 that is used for the four-pole circuit breaker assembling; As can see, interconnecting modules 63 is positioned between two supporting modules 61, and two supporting modules 61 are located with continuation mode along rotating shaft 60.
Supporting module 61 appears and has along first pedestal respect to one another of rotating shaft 60 and the cylinder of second pedestal, limits first jockey above that.In addition, interconnecting modules 63 presents the cylinder that has along rotating shaft 60 first pedestals respect to one another and second pedestal, limits second jockey above that, and second jockey utilizes corresponding first jockey of two modules 61 and be coupled to each other.Preferably, first jockey comprises three coupling recesses 64, and second coupling device comprises three respective teeth 65.Except that setting up module 61, integral body coupling between 63, first and second jockeys are as moving conveying element, thereby in the rotary course of moving meter 52, move in the assistance module 61,63.
In addition, center nail 66 turns forward with the center of the mode in the respective chamber 67 of center nail 66 insertion supporting modules 62 from two pedestals of interconnecting modules 63.
Also can on the body of interconnecting modules 63, limit interactive device, it operationally carries out with the signaling device of the state that is used for circuit breaker 1 (open, closed or break off) via protruding tongue 71 alternately.
In order to improve the breaking capacity of circuit breaker 1, the electric current that circulates in each utmost point 18 is applied predefined paths, make after the short circuit generation, between contact, produce electrodynamic repulsion force.
For this purpose, two electric terminals 36 and 37 preferably with the flow of current direction through removable contact 27 with respect to being shaped as U-shaped through flow of current mode in the opposite direction in the face of the part of the terminal 36 of removable contact 27 itself and 37.Circuit breaker 1 also is provided with such device, and it is suitable for preventing that removable contact 27 from producing towards the phenomenon of fixed contact 25,26 resiliences and the generation again of consequential electric arc after electrodynamic repulsion force.Specifically with reference to Figure 11, in the containing seat 62 of removable contact 27, define first nail 72, it is to allow about the mode of hole coupling to allow to rotate about rotating shaft 31 in the centerbody 28 of the mode of rotating shaft 31 rotations and removable contact 27.On centerbody 28 also limiting first cam surface 73 and second cam surface 74 about rotating shaft 31 relative parts.
In supporting module 61, also be placed with: second nail the 75 and the 4th nail 78, they are can be about supporting module 61 itself mobile and be suitable for respectively operationally interacting with first cam surface 73 and second cam surface 74; And the 3rd nail the 76 and the 5th nail 79 that is fixed to supporting module 61.About the end view of the supporting module in Figure 11 61, second nail the 75 and the 5th nail the 79 and the 3rd nail the 76 and the 4th nail 78 is positioned on the part that is mutually symmetrical about first nail 72.
Second nail the 75 and the 3rd nail, 76 end is connected respectively to the 5th via the removable nail 75 of constraint and 78 a pair of connecting rod that moves (in Figure 11 shown in broken lines and represent with Reference numeral 173) and follows closely the 79 and the 4th and follow closely 78 end.Be positioned in each other end anchorage to two nail 75 and 76, and follow closely 78 and 79 about the end anchorage to two of second arm, 30 two second springs 81 respect to one another of removable contact 27 about two first springs 80 on the relative part of the first arm of removable contact 27 29.Therefore; Spring 80 and 81 is operably connected to removable contact 27; And has following function:, guarantee between significant surface 32 and first fixed contact 25 of removable contact 27 and the significant surface 34 of removable contact 27 and the enough contact pressures between second fixed contact 36 when circuit breaker 1 during at closure state.
Under the situation of the circuit breaker 1 of closure, second nail the 75 and the 4th is followed closely 78 and is easy to make the mode of mechanical force moment that the arm 29,30 of removable contact 27 is coupled to fixed contact 25,26 on the wall that abuts against first cam surface 73 and second cam surface 74 under the effect of spring 80 and 81 respectively with generation.In the moment that generates electrodynamic repulsion force, the rotation under the constraint of second nail the 75 and the 4th nail 78 of removable contact 27, thus confirm spring 80 and 81 elongations.Under this state, second nail the 75 and the 4th nail 78 interacts with first cam surface 73 and second cam surface 74 respectively, thereby keeps directly contacting with them.Exceed outside the predetermined anglec of rotation of removable contact 27, the interaction of nail-cam generates the mechanical force moment that matees with rotation itself with the mode of assisting arm 29,30 to separate with fixed contact 25,26.The position of separating fully that such interaction also makes removable contact 27 remain on to be reached, thus prevent that its maybe resilience.
As an alternative, insert the end of second nail the 75 and the 4th nail 78 with sliding type along the slit that on supporting module 61, limits in parallel with each other.
Obviously, under the situation of single-break circuit breaker 1, it is enough that the use that anchoring has second of first spring 80 to follow closely the 75 and the 3rd nail 76 on it only is provided.
On the centerbody 28 of removable contact 27, also define first interface 82 and second interface 83; They are adjacent with second cam surface 74 with first cam surface 73 respectively, and be suitable for containing seat 62 in first conjugate planes 84 and second conjugate planes 85 that limit operationally interact.In the process that removable contact 27 rotates owing to electrodynamic repulsion force, first interface 82 and second interface 83 abut against respectively on first conjugate planes 84 and second conjugate planes 85, and wherein the part with the kinetic energy of removable contact 27 is delivered to moving meter 52 subsequently.In this way, from deducting energy to possibly the colliding of the main casing of circuit breaker 1; Before one or more protective devices were intervened the trip shaft 86 of driving mechanism 56, this energy was advantageously used in the rotation that triggers moving meter 52.In circuit breaker 1, this protective device comprises at least one electronic protection 88 (following table is shown " device 88 ") and the device affording magnetic protection 87 (following table is shown " magnetic blade 87 ") that is associated with each utmost point 18.
Electrical protective device 88 can be connected electrically to the ampere metering display 89 (Fig. 1) on the front shroud 6 that is positioned at circuit breaker 1, for example, and near actuator lever 8.Ampere metering display 89 is used to show the value of the electrical parameter of being measured by device 88, for example as the electric current that in the utmost point 18, circulates or one of the voltage that can be associated with electric current or frequency values; Usually, as default setting, be presented at the central maximum current of electric current of circulation in the utmost point 18.The device that being used to as two pressing buttons 90 controlled ampere metering display 89 is positioned as next-door neighbour's ampere metering display 89; The operator can use this device to select the parameter and the configurations shown that will show, brightness, contrast or other parameter for example can be set.
The protective device of circuit breaker 1 also can comprise differential protection 91, its detect in the utmost point 18 with the mode that identifies differential fault state circulation electric current vector and amplitude.Differential protection 91 is coupled to the main casing of circuit breaker 1, and comprises the user interface device 93 (Figure 12) with pressing button, knob and concave type switch (dip-switch) of being used to be provided with parameter.
In one of preferred embodiment of differential protection 91, differential protection 91 can measure and handle the AC and DC electric current both.One or more electric conductors 95 of (Figure 13) particularly, magnetic core 94 streaming current in it, this electric current passes the utmost point 18, and winding 96 is wrapped on the core 94 and preferably in series is connected electrically to resistor 97.Place, end connection at such resistor 97 is suitable for formation voltage signal V
AmplAmplifying device 98, voltage signal V
AmplWith the electric current I of passing resistor 97
RProportional and constitute the input of feedback control circuit piece 99.Such circuit block 99 drives the voltage source 100 of supplying with driving voltage at the place, end of winding 96, and the result generates exciting current.Advantageously, to work as I
RMake driving voltage when electric current reaches predetermined value and make the mode driving voltage source 100 of the sign inversion of exciting current value thus, wherein, predetermined value is set with the magnetization of the core 94 optimized mode that circulates.
Through exciting current and the electric current that will measure are superposeed and given I
RElectric current; In winding 96, respond to this electric current that will measure through the electric current of the utmost point 18 of circulation in conductor 95.Low pass filter 101 such as the RC filter receives the voltage signal V that arrives
Ampl, eliminate its high fdrequency component import into by exciting current, and output and the proportional voltage signal V of electric current that responds to through the electric current that circulates in the conductor 95
Out
Be installed in by error under the situation in the circuit at the circuit breaker that will have not enough breaking capacity 1, perhaps safeguard under the not enough situation at circuit breaker 1, it is own that the generation of high value short circuit can damage circuit breaker 1.In order to prevent this possibility, in circuit breaker 1, protective device is set, it can promptly intervene, intervene installing 88 trip shaft 86 in advance.Therefore, magnetic blade 87 is positioned as along the path of current of each utmost point 18 (Fig. 3,4 and 7), and particularly, it is positioned near second electric terminal 37, and opens predetermined space in 37 minutes with second electric terminal.When critical short-circuit state took place, the magnetic field of the enhancing that generates through the flow of current in second electric terminal 37 made magnetic armature 172 return (Fig. 7) towards magnetic blade 87.In its moving process, magnetic armature 172 traction trip shaft 86, thus cause moving meter 52 rotations and circuit and circuit breaker 1 are in a safe condition.
The appearance of the high strength short circuit as the short circuit that causes magnetic blade 87 to be intervened can cause contact 25,26,27 to be soldered.In order suitably to send the signal of this critical situation; For circuit breaker 1 provides so-called " forced maneuver "; If contact does not have freely to separate (contact of welding) to one of 25-27,26-27, the actuator lever 8 of driving mechanism 56 can not arrive the position that is marked with " unlatching "/" pass "/" 0 " according to this forced maneuver so.
Carry out this task by the forced maneuver device, the forced maneuver device comprises the blocking bar 102 that becomes integral body with the fork 103 of driving mechanism 56; Preferably, bar 102 is by constituting from pitching 103 arms that turn forward.Blocking bar 102 operationally with shaft bar element 105 on the traction nail 104 that limits interact, and be operably connected to moving meter 52 via fork 103.In the normal unlatching manipulation process of circuit breaker 1, the rotation of actuator lever 8 causes the predetermined potential energy of accumulation in the spring 68, when surpassing the predetermined angular of actuator lever 8 rotations own, this potential energy is discharged into moving meter 52.Shaft bar element 105 is with actuator lever 8 rotations, and in the moment that discharges potential energy, traction nail 104 is tackled blocking bars 102.Therefore, about the required potential energy of spring 68, any final remaining mechanical energy that is applied on the actuator lever 8 advantageously is delivered to moving meter 52 via blocking bar 102.When open to handle finishing, traction nail 104 is arranged in about blocking bar 102 position freely.
Under the situation of the contact that welds, to open in the starting stage of handling, moving meter 52 begins to rotate the not spring 80 and 81 of progressive load, and traction nail 104 interception blocking bars 102; Yet the welding of contact stops moving meter 52 to move, so moving meter 52 rests in the position of stall.Under the situation of this stall, owing to traction nail 104 still by so that stop the completion of the rotation of actuator lever 8 with the fact that moving meter 52 becomes 102 restrictions of whole blocking bar.
Circuit breaker 1 can be provided with various accessory devices, and each accessory device is realized the function of circuit breaker 1 itself, such as indication, activate or control.
Advantageously; Circuit breaker 1 portion within it comprises the electrical interface unit with a plurality of interconnect ports and first communication bus; With with one or more such accessory devices, with electronic protection 88 or differential protection 91, or moreover realize the electrical interface unit with mode as other means for engaging of the circuit breaker of user interface device (for example, ampere metering display 89) 1 itself.Accessory device, protective device 88,91 and other device all are connected to the corresponding connectivity port of electrical interface unit through first communication bus.According to preferred solution, first communication bus only is made up of two cables, therefore forms so-called paired wiring (pair cabling). Protective device 88,91 can be properly connected to the supervisory control system that is positioned at outside the circuit breaker 1 via the second communication bus.
Each connectivity port is configured, and makes that it can indistinction ground and be connected to any device of circuit breaker 1 interchangeably.In this way, can break off them through connecting perhaps from the electrical interface unit through first communication bus, the quantity of modifier and type, and need not add or remove cable and connected system.
As an alternative or except that communication and management function to data and/or signal, electrical interface unit further management as by the distribution of installing the power supply that 88 warps, first communication bus each device to the connectivity port that is connected to the electrical interface unit provides.
The accessory device of circuit breaker 1 can also receive order or signal from the relative section of the circuit that is inserted with circuit breaker 1, or send order or signal to the relative section of the circuit that is inserted with circuit breaker 1; For example, receive order or signal and send order or signal from the accessory device of other circuit breaker 1 of same circuit, inserting to the accessory device of other circuit breaker 1 that in same circuit, inserts.The jockey 112 that use has the structure that is suitable for taking in the electrical couplings device as plug, cable or coupler socket transmits such order and signal.Based on the type that is inserted in the electrical couplings device in himself structure, jockey 112 is distinguished into three types: modular plug, socket and adapter and/or expansion module.
On the outer wall of the structure that constitutes jockey 112, limit first mechanical coupler with circuit breaker 1 and second coupling device with another jockey 112.First mechanical coupler can comprise one or more tooth (not shown)s, and second coupling device can constitute by the hookup of male-female type or by the carriage that the guide groove or the slit of moulding constitutes.
Through the interaction between their second coupling device, each jockey 112 can be settled or overlapped each other with the mode that realizes more complicated contiguous block abreast.
Usually, circuit breaker 1 is installed in the circuit via distribution switchboard.Inserting or can extracting out in the installation solution of execution, use adapter apparatus, it is with the quick machinery and the interface element that is electrically connected that act between circuit breaker 1 and the conductor (system of the distribution bar that for example, in distribution switchboard, exists (Figure 17)).
Adapter apparatus (following table is shown " adapter 120 ") has been shown in Figure 16; Utilize the seat 119 that aligns with the respective seat that on the sidewall of adapter apparatus 120, limits 121, adapter apparatus is coupled to the circuit breaker 1 of detachable execution with the mode that realizes whole containing seat.In whole containing seat, insert: be connected electrically to the accessory device of circuit breaker 1 at least one first jockey 112, be connected electrically to the second outside jockey 112 of circuit breaker 1 and get involved the adaptor module 112 between each first jockey 112 and second jockey 112 at last via cable 113.Therefore, the use of adaptor module 112 makes and can easily forward the circuit breaker 1 that insertion maybe can be extracted execution out to from a fixing circuit breaker 1 of carrying out.
Comprise second wall 123 first wall 122 of the coupled wall 12 that can be coupled to circuit breaker 1 and the system that can be coupled to the bar 124 that is positioned at distribution switchboard 125, relative with first wall 122 in the structure of the adapter apparatus shown in Figure 16 to Figure 19 120 (following table is shown " adapter 120 ").
Near first electric terminal 128, one or more holders 136 turn forward from second wall 123, and be configured to realize and one of the detachable mechanical connection of bar 124 and bar 124 self and corresponding first electric terminal 128 between be electrically connected.Particularly, holder 136 is positioned in the front of second wall 123, and the mode and second wall 123 that insert with at least a portion that allows bar 124 are spaced apart.First electric terminal 128 is positioned on second wall 123 with different distance and height (assessing about the edge of wall 123) with respective clamp part 136, and is isolated from each other via separating spacing body 139.
The identical holder of being processed metal material 136 partly limits first electric terminal 128 to allow adapter 120 to the mode that is electrically connected with mechanical connection of bar 124.In addition, each first electric terminal 128 comprises conductive plate 138 (Figure 18), and conductive plate 138 turns forward from second wall 123 in the front of holder 136 with the mode that holder 136 locks onto on the bar 124.
First is electrically connected 130 and second is electrically connected 131 and is accommodated in the structural inner seat that limits of adapter 120, and along alignment direction 132 by alignment (Figure 19).In the illustrated embodiment; Be electrically connected 130 and 131 and present " insert type " configuration; Wherein the inner hollow cylinder is connected to the current-collector of being processed by electric conducting material, current-collector respectively with corresponding first electric terminal 128 with corresponding second electric terminal, 129 electric contacts.
Preferably, adapter 120 comprises tightening screw, and the threaded portion engagement of each tightening screw and holder 136 is so that contact with the part of bar 124.Can be near the head of tightening screw the operator via the chamber that on first wall 122, limits 148.
Second electric terminal 129 turns forward from one of wall that first wall 122 is connected to second wall 123, and comprises via the screw tightening member and be connected to the 3rd forming element that be electrically connected in one of 131 the electric conducting material.The first end of second electric terminal 129 is connected to the outside respective electrical conductor 158 (Figure 21) of adapter 120, is electrically connected 131 current-collector and be connected to second with the first end opposite second end.
In Figure 20, illustrated at the rear wall 12 that inserts (maybe can extract out) executory circuit breaker 1, it is coupled to the first wall 122 of adapter 120.Circuit breaker 1 comprises that the 3rd is electrically connected the 152 and the 4th and is electrically connected 153, the three and is electrically connected the 152 and the 4th and is electrically connected 153 and is configured to respectively machinery and inserts and be connected electrically to first and be electrically connected 130 and second and be electrically connected 131.In the example that illustrates, be electrically connected 152,153 and be configured to plug-type and connect, and be in alignment with each other and separated and adapter 120 be electrically connected 130, the equidistant distance between 131.
The rear wall 12 of circuit breaker 1 comprises and being suitable for and interactional second guiding device of first guiding device of adapter 120, to allow two couplings between the device 1 and 120.Particularly, second guiding device comprises guided plate 154, and it first side of " L type " element 155 that is fixed to rear wall 12 laterally occurs and constitute from wall 12.Guided plate 154 is formed with the mode in the corresponding drawer type chamber 149 that is inserted in adapter 120.
On rear wall 12, also define the interlocking lever 156 that has hook 157 in its end.Interlocking lever 156 representes that with its position the mode of position of the removable contact 27 of the state (closed, open or trip) as circuit breaker 1 is operably connected to contact or other actuation part in the utmost point 18.At the closure state of circuit breaker 1, hook 157 is hooked on the block side that limits in the container cavity 150 of adapter 120, thereby holdout device 1 separates with 120.Vice versa, in the closed or tripped condition of circuit breaker 1, through the block side hook 157 broken off relations, and makes and can circuit breaker 1 be separated with adapter 120.
At last, Figure 21 has presented Electric switch plate 125, and the portion location has system arranged perpendicular, that the bar 124 of two adapters 120 is installed on it, coupling circuit breaker 1 on one of adapter 120 within it.The technical scheme of describing allows even mounting adapter 120 in system's (being similar to the system in Figure 17) of the bar with horizontal arrangement 124.
Advantageously, on the body of framework 165, limit jockey, it comprises one or more hooks 167 (Figure 24) at one of the edge that can on geometry, be coupled to window 164.
At last, go up at the face (relative with the face of realizing hook 167 above that) of a wall of framework 165 and to limit depression 171, it is suitable for taking in the device that is used for discerning the equipment (for example indicator board) that is contained in aperture 166.
Claims (13)
1. an electrical switchgear that is used for low-voltage circuit is characterized in that, comprising:
The main casing that comprises one or more utmost points (18); Each of the said utmost point (18) comprises the insulation shell (19) that contains at least one first fixed contact (25) and the removable contact of corresponding rotation (27); Said removable contact (27) has centerbody (28); At least one the first arm (29) turns forward from said centerbody (28); The place defines first significant surface (32) in the end of said the first arm (29), its locate to be coupled in the first disjunction chamber (33) said first fixed contact (25) and can with said first fixed contact (25) uncoupling;
Be arranged in the moving meter (52) of said main casing; To each utmost point (18); Decide containing seat (62) in said moving meter (52) upper limit; In said containing seat (62), hold the said centerbody (28) of said removable contact (27), wherein said at least one the first arm (29) externally turns forward from said containing seat (62);
Driving mechanism (56), it is connected to said moving meter (52) in operation, rotate about rotating shaft (60) to allow it;
At least one protective device, it is suitable for the trip shaft (86) that fault in the interior said low-voltage circuit that is inserted with said switching device (1) is intervened said driving mechanism (56) after taking place,
Wherein, Said insulation shell (19) comprises two and half shells (40); Said two and half shells (40) are coupled along corresponding coupling surface with the mode that realizes self supporting structure each other; Said coupling between said two and half shells (40) limits internal volume (41); Said internal volume is suitable for holding at least said first fixed contact (25), said the first arm (29) and the said first disjunction chamber (33); Said coupling also limits about rotating shaft (31) first compartment respect to one another (42) of said removable contact (27) and second compartment (43), and said first compartment (42) and second compartment (43) are suitable for holding respectively and are used for and the importing into and spread out of first electric terminal (36) and second electric terminal (37) that is electrically connected of the utmost point (18) of said low-voltage circuit.
2. electrical switchgear according to claim 1; It is characterized in that; To each utmost point (18); Said insulation shell (19) comprises second fixed contact (26); Said removable contact (27) comprises second arm (30), its with about said rotating shaft (31) and with said the first arm (29) roughly symmetrical manner turn forward from said centerbody (28), and limit second significant surface (34) at place, the end of said second arm (30); Its locate to be coupled in the second disjunction chamber (35) said second fixed contact (26) and can with said second fixed contact (26) uncoupling, said internal volume (41) holds said second fixed contact (26), said second arm (30) and the said second disjunction chamber (35).
3. electrical switchgear according to claim 1 and 2 is characterized in that, said moving meter (52) presents modular construction, and this structure comprises:
A plurality of supporting modules (61), it is along said rotating shaft (60) location of said moving meter (52), and each of said supporting module (61) is inserted in the corresponding insulation shell (19), and said containing seat (62) is limited in each of said supporting module (61);
Interconnecting modules (63), it is got involved between two supporting modules (61), and these two supporting modules (61) are located with continuation mode along the said rotating shaft (60) of said moving meter (52).
4. electrical switchgear according to claim 3 is characterized in that, each of said supporting module (61) comprises:
At least two first springs (80), it is suitable for guaranteeing the enough contact pressures between said first significant surface (32) and said first fixed contact (25);
At least the first nail (72), it is fixed to said supporting module (61) and goes up the hole coupling that limits with said centerbody (28), on said centerbody (28), also limits first cam surface (73);
At least the second nail (75) and the 3rd nail (76), they are positioned in about in said first nail (72) part respect to one another, and said second nail (75) can move about said supporting module (61), and said the 3rd nail (76) is fixed to said supporting module (61);
Said at least two first springs (80) anchor to said second nail (75) and said the 3rd nail (76); And be positioned as about said the first arm (29) against each other, said second nail (75) interacts with said first cam surface (73) in operation with the mode that in the process of at least a portion of the separating step of said first significant surface (32) and said first fixed contact (25), generates with the mechanical force moment of the direction of rotation coupling of said removable contact (27).
5. electrical switchgear according to claim 4 is characterized in that:
Go up qualification second cam surface (74) at said centerbody (28), it is positioned as about the said rotating shaft (31) of said removable contact (27) roughly symmetrical with said first cam surface (73);
About said supporting module (61) movably the 4th nail (78) be fixed to said supporting module (61) the 5th follow closely (79); Said the 4th nail (78) is positioned as about said first nail (72) and said the 3rd nail (76) symmetry, and said the 5th nail (79) is positioned as about said first nail (72) and said second nail (75) symmetry;
Be suitable for guaranteeing at least two second springs (81) of the enough contact pressures between said second significant surface (34) and said second fixed contact (26); It is anchored to said the 4th nail (78) and the 5th nail (79) respectively, and is positioned as about said second arm (30) against each other;
Said the 4th nail (78) interacts with said second cam surface (74) in operation with the mode that in the process of at least a portion of the separating step of said second significant surface (34) and said second fixed contact (26), generates with the mechanical force moment of the direction of rotation coupling of said removable contact (27).
6. electrical switchgear according to claim 5; It is characterized in that; On said centerbody (28), be limited with first interface (82) and second interface (83); They and are suitable for after the rotation of said removable contact (27), abutting against respectively on first conjugate planes (84) and second conjugate planes (85) about the said rotating shaft (31) of said removable contact (27) against each other.
7. electrical switchgear according to claim 1 is characterized in that, said driving mechanism (56) comprising:
Actuator lever (8), it is suitable for when on said actuator lever, applying power, rotating;
Shaft bar member (105), it is suitable for supporting said actuator lever (8), and is included at least one traction nail (104) that limits on the said shaft bar member;
Fork (103), it is connected to said moving meter (52) in operation;
Become whole blocking bar (102) with said fork (103), it is suitable for interacting with said traction nail (104) in operation with the mode of the rotation of the said actuator lever of blocking-up (8) under the situation that is soldered to corresponding removable contact (27) at said first fixed contact (25).
8. electrical switchgear according to claim 1 is characterized in that, said at least one protective device comprises the electronic protection (88) with control electronic equipment, and said control electronic equipment has:
At least one analog/digital converter, it can convert the transient current of circulation in said one or more utmost points (18) to number format;
At least one differentiator, it can calculate the first derivative of said transient current about the time;
Said control electronic equipment is suitable for based on from said at least one analog/digital converter with from the output signal of said at least one differentiator; The value of the peak current that estimation is associated with each said transient current, said control electronic equipment surpasses output short-circuit detection signal under the situation of predetermined threshold levels in the value of said peak current.
9. electrical switchgear according to claim 8; It is characterized in that; Said electrical switchgear comprises front shroud (6); Going up the location at said front shroud (6) has an ampere metering display (89) and control device (90), and said ampere metering display (89) is electrically connected to said electronic protection (88) to show from the mode of the value of the electrical parameter of said electronic protection (88) measurement, and said control device (90) is used to select the parameter and the display mode that will show.
10. electrical switchgear according to claim 1 is characterized in that, said at least one protective device comprises the differential protection (91) that is suitable for measuring and handling the AC and DC electric current, and said differential protection (91) comprising:
Magnetic core (94), it is positioned in one or more electric conductors (95) on every side, and the electric current of the utmost point (18) circulates in each of said electric conductor (95);
Be wrapped in the winding (96) on the said magnetic core (94), mobile in said winding (96) by the electric current of the current-induced of circulation in the said utmost point (18);
Be connected to the resistor (97) of said winding (96);
Voltage source (100), it applies driving voltage with the mode that exciting current flows at the place, end of said winding (96) in said resistor (97);
Feedback control circuit piece (99), it receives input signal (V
Ampl), said input signal (V
Ampl) and depending on the electric current (I of said electric current of inducting and said exciting current
R) in said resistor (97) through after and the voltage that produces at place, the end of said resistor (97) is proportional, said feedback control block (99) output is suitable for as said electric current (I
R) make the reverse mode of said driving voltage drive the signal of said voltage source (100) when reaching predetermined value.
11. electrical switchgear according to claim 1; It is characterized in that; Said electrical switchgear comprises at least one jockey (112), said jockey (112) have be suitable for taking in said switching device (1) and/or with the structure of the electrical couplings device of other jockey (112).
12. electrical switchgear according to claim 1; It is characterized in that; Said electrical switchgear comprises communication bus; Said communication bus is used at least one accessory device of said switching device (1) and/or said at least one protective device are interconnected to the corresponding connectivity port of the electric interfaces unit that is included in said switching device (1), and said communication bus is made up of two cables.
13. electrical switchgear according to claim 1 is characterized in that, said electrical switchgear comprises the adapter apparatus (120) of the system that is used to be connected to distribution bar (124), and said adapter apparatus comprises:
Can be coupled to said main casing coupled wall (12) first wall (122) and can be coupled to the system of said distribution bar (124), second wall (123) relative with said first wall (122);
First electric terminal (128), it has from said second wall (123) and turns forward and be suitable at least a portion of electric contact distribution bar (124);
Second electric terminal (129), it turns forward from least one of the wall of the said adapter apparatus (120) that said first wall (122) is connected to said second wall (123);
First is electrically connected (130), said first be electrically connected (130) each be electrically connected to one of said first electric terminal (128), and can be coupled to the 3rd of said switching device (1) and be electrically connected (152);
Second is electrically connected (131), and each of said second electrical connection (131) is electrically connected to one of said second electric terminal (129), and can be electrically connected (153) coupling with the corresponding the 4th of said switching device (1);
One or more holders (136), it turns forward from said second wall (123), to be used for removably said adapter apparatus (120) being connected to the system of said distribution bar (124).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ITMI2009U000425 | 2009-12-23 | ||
| ITMI20090425 ITMI20090425U1 (en) | 2009-12-23 | 2009-12-23 | ELECTRIC SWITCHING DEVICE FOR LOW VOLTAGE CIRCUITS. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202217628U true CN202217628U (en) | 2012-05-09 |
Family
ID=43727598
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206837572U Expired - Lifetime CN202217628U (en) | 2009-12-23 | 2010-12-22 | Electric switching apparatus used in low-voltage circuit |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN202217628U (en) |
| IT (1) | ITMI20090425U1 (en) |
| RU (1) | RU107397U1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104701101A (en) * | 2013-12-03 | 2015-06-10 | 通用电气公司 | Cover assembly for circuit breaker, circuit breaker having the same, and method |
| CN110246711A (en) * | 2018-03-09 | 2019-09-17 | 高兰团队公司 | Cam-actuated switch module and its manufacturing method |
| CN110504119A (en) * | 2019-08-21 | 2019-11-26 | 哈尔滨东大高新材料股份有限公司 | A kind of preparation method of silver-bearing copper composite electric contact material |
| CN111696816A (en) * | 2019-03-13 | 2020-09-22 | As特瑞德电气出口公司 | Insulation switch equipment of electric power system |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102013106279A1 (en) * | 2013-06-17 | 2014-12-18 | Harting Electric Gmbh & Co. Kg | Holding frame for connector modules |
| FR3008542B1 (en) * | 2013-07-09 | 2015-10-02 | Schneider Electric Ind Sas | CIRCUIT BREAKER RESET DETECTION DEVICE, ACTUATOR FOR CIRCUIT BREAKER CONTACTS SEPARATION MECHANISM, ELECTRIC CIRCUIT BREAKER AND USE OF INDUCED CURRENT FOR GENERATING REARMING INDICATION SIGNAL |
| WO2015081843A1 (en) * | 2013-12-05 | 2015-06-11 | 德力西电气有限公司 | Contact plate fixing structure |
| RU2576321C1 (en) * | 2014-10-06 | 2016-02-27 | Юрий Николаевич Борцов | Electric device starting button interlock (versions) |
| DE102015105852B4 (en) * | 2015-04-16 | 2019-10-31 | Erni Production Gmbh & Co. Kg | plug-in device |
| SI25460B (en) * | 2017-06-06 | 2021-11-30 | Nela Razvojni Center Za Elektroindustrijo In Elektroniko, D.O.O. | Improved thermomagnetic actuator in a security electric switch |
-
2009
- 2009-12-23 IT ITMI20090425 patent/ITMI20090425U1/en unknown
-
2010
- 2010-12-22 RU RU2010152691/07U patent/RU107397U1/en active
- 2010-12-22 CN CN2010206837572U patent/CN202217628U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104701101A (en) * | 2013-12-03 | 2015-06-10 | 通用电气公司 | Cover assembly for circuit breaker, circuit breaker having the same, and method |
| CN104701101B (en) * | 2013-12-03 | 2019-08-30 | Abb 瑞士股份有限公司 | Cap assemblies for breaker, the breaker with cap assemblies and insulating method |
| CN110246711A (en) * | 2018-03-09 | 2019-09-17 | 高兰团队公司 | Cam-actuated switch module and its manufacturing method |
| CN110246711B (en) * | 2018-03-09 | 2023-11-07 | 高兰团队公司 | Cam actuated switch module and method of manufacturing the same |
| CN111696816A (en) * | 2019-03-13 | 2020-09-22 | As特瑞德电气出口公司 | Insulation switch equipment of electric power system |
| CN110504119A (en) * | 2019-08-21 | 2019-11-26 | 哈尔滨东大高新材料股份有限公司 | A kind of preparation method of silver-bearing copper composite electric contact material |
Also Published As
| Publication number | Publication date |
|---|---|
| ITMI20090425U1 (en) | 2011-06-24 |
| RU107397U1 (en) | 2011-08-10 |
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| C14 | Grant of patent or utility model | ||
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| CX01 | Expiry of patent term |
Granted publication date: 20120509 |