EP2030213B1 - Schutzschalter - Google Patents
Schutzschalter Download PDFInfo
- Publication number
- EP2030213B1 EP2030213B1 EP06805855A EP06805855A EP2030213B1 EP 2030213 B1 EP2030213 B1 EP 2030213B1 EP 06805855 A EP06805855 A EP 06805855A EP 06805855 A EP06805855 A EP 06805855A EP 2030213 B1 EP2030213 B1 EP 2030213B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- protection switch
- housing
- circuit breaker
- switch modules
- contact
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Not-in-force
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Classifications
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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
- H01H71/08—Terminals; Connections
- H01H71/082—Connections between juxtaposed circuit breakers
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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
- H01H71/10—Operating or release mechanisms
- H01H71/1009—Interconnected mechanisms
- H01H71/1018—Interconnected mechanisms with only external interconnections
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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
- H01H71/10—Operating or release mechanisms
- H01H71/1009—Interconnected mechanisms
- H01H71/1027—Interconnected mechanisms comprising a bidirectional connecting member actuated by the opening movement of one pole to trip a neighbour pole
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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
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/24—Electromagnetic mechanisms
- H01H71/2409—Electromagnetic mechanisms combined with an electromagnetic current limiting mechanism
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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
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/24—Electromagnetic mechanisms
- H01H71/2454—Electromagnetic mechanisms characterised by the magnetic circuit or active magnetic elements
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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
- H01H71/10—Operating or release mechanisms
- H01H71/50—Manual reset mechanisms which may be also used for manual release
- H01H71/52—Manual reset mechanisms which may be also used for manual release actuated by lever
- H01H71/526—Manual reset mechanisms which may be also used for manual release actuated by lever the lever forming a toggle linkage with a second lever, the free end of which is directly and releasably engageable with a contact structure
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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
- H01H71/74—Means for adjusting the conditions under which the device will function to provide protection
- H01H71/7427—Adjusting only the electrothermal mechanism
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
- H01H73/02—Details
- H01H73/18—Means for extinguishing or suppressing arc
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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
- H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
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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
- H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
- H01H9/342—Venting arrangements for arc chutes
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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
- H01H9/46—Means for extinguishing or preventing arc between current-carrying parts using arcing horns
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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
- H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
- H01H2009/348—Provisions for recirculation of arcing gasses to improve the arc extinguishing, e.g. move the arc quicker into the arcing chamber
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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
- H01H71/08—Terminals; Connections
- H01H2071/086—Low power connections for auxiliary switches, e.g. shunt trip
Definitions
- the invention relates to a circuit breaker according to the preamble of claim 1.
- a circuit breaker is off WO 93/18353 A1 known.
- Another circuit breaker is off, for example FR 2 661 778 A1 known.
- the tripping mechanism of the known circuit breaker comprises an electromagnetic trigger and a bimetallic trigger.
- the electromagnetic triplet detects a short circuit
- the bimetallic trigger detects an overload condition.
- the corresponding trigger acts on a triggering arm, which in turn unlatches the switching arm and thus triggers the return of the switching arm into the open position.
- a circuit breaker of the abovementioned type is generally intended to induce the most rapid possible separation of the electrical connection formed between the moving contact and the fixed contact when the tripping condition occurs in order to effectively protect a circuit connected downstream of the circuit breaker against a short circuit and / or overload damage.
- a switching arc as inevitably arises in the switching operation between the moving contact and the fixed contact; be deleted as quickly as possible to bring the current flow to a standstill and avoid burning off the contact material as far as possible.
- the rapid deletion of the Druckilchtbogens is particularly important in short circuit and overload of particular importance, especially in these cases, the switching arc develops a particularly strong destructive effect due to the high current flow.
- a circuit breaker should be as simple as possible and inexpensive to manufacture but at the same time for manufacturing reasons.
- Circuit breakers of the above type are produced both in single-pole and multi-pole versions.
- Such a modular circuit breaker is for example off EP 0 538 149 A1 known.
- the object of the invention is to provide a circuit breaker which is particularly suitable against the background described above, in particular with regard to rational manufacturability.
- a coupling piece for this purpose, which serves both the mechanical fixation of the circuit breaker modules together, as well as a coupling of the manual actuation mechanism and the trigger mechanism of the adjacent circuit breaker modules causes.
- This coupling piece is in one piece in a particularly simple embodiment, in particular as a low-priced plastic injection molded part formed.
- a blind cover is also optionally provided, the in the manner of a modular system modular instead of the coupling piece on this outer housing front side is placed.
- each circuit breaker module To connect an electrical conductor, the or each circuit breaker module to a feed terminal, which is electrically connected in the module interior with the fixed contact.
- the Einspelsungsan gleich of each circuit breaker module preferably has a coupling contact, by means of which a plurality of juxtaposed Schutzschattermodule a multi-pole circuit breaker arrangement can be connected in parallel by means of a busbar. In this way, eliminates the need to wire each circuit breaker module input side separately. Rather, all circuit breaker modules are supplied in the manner of a power distributor via a common power supply line
- each circuit breaker module further comprises two signal terminals for connecting conductors that are electrically connected to a signal relay module inside. Also these signal connections is expediently connected in each case a coupling contact in parallel, via which the signal terminals of various circuit breaker modules are electrically connected.
- the or each coupling contact is arranged in a housing slot, which spans the entire housing width, so that for bridging the coupling contacts of adjacent circuit breaker modules designed as a profile component busbar in the housing slots can be inserted.
- the or each housing slot in terms of its dimensioning, i. its opening side and depth dimensioned such that the coupling contact is finger-safe received in the housing.
- the circuit breaker preferably further comprises a terminating strip of insulating material which is flush with each Genzousestimseite inserted into the housing slot and closes the housing slot to this end face in the inserted state ,
- the or each housing slot on each end face of the housing has a guide web, which preferably surrounds at least part of the end edge of the housing slot, but projects at least from both slot walls into the space recessed by the housing slot.
- This guide web serves, on the one hand, to fix it in the inserted state on the housing by positive engagement in a corresponding guide groove of the end strip.
- the embodiment of the invention described in the following figures relates to a kind of modular system modular circuit breaker 1, which can be realized by combining a number of components in single or multi-pole design.
- the core component of this modular system is a circuit breaker module 2, which in itself already forms a fully functional single-pole circuit breaker.
- Unipolar designs of the circuit breaker 1, as in particular in the Fig. 1 to 6 are represented, are essentially formed by a single circuit breaker module 2 accordingly.
- Multipole types of circuit breaker 1, as in the Fig. 17 to 21 are represented by stringing one of the number of poles of the circuit breaker 1 corresponding number of circuit breaker modules 2 are formed.
- the protection switch module 2 which is initially shown in a view from the outside, comprises a housing 3 made of insulating material.
- the circuit breaker module 2 is designed in the manner of a DIN rail mounted device.
- the housing 3 has correspondingly the characteristic for such devices, symmetrical to a front side 4 graded shape.
- a handle 6 of a pivot lever 7 out of the housing At an outstanding central part 5 of the front side 4 protrudes to actuate the circuit breaker module 2, a handle 6 of a pivot lever 7 out of the housing.
- the circuit breaker module 2 is provided with a receptacle, which is typical for DIN rail mounted devices, for latching the circuit breaker module 2 onto a mounting rail, in particular a DIN rail.
- a locking slide 10 is provided which is guided in a guide 11 of the housing 3 slidably.
- the locking slide 10 is provided with laterally molded spring arms 12 which cooperate with a - simplified - sawtooth contour of the guide 11 such that the locking slide 10 captively fixed in the mounting state in the guide and bistable between a detent position in which a latch 13 of the locking slide 10th protrudes into the receptacle 9, and a release position, in which the detent 13 is retracted from the receptacle 9, is displaceable.
- the bistable guide the locking slide 10 remains in the release position when it is manually withdrawn by a user in particular for disassembly of the circuit breaker module 2 from the detent position, so that the circuit breaker module 2 can be easily lifted from the mounting rail.
- the bistable latching of the locking slide 10 in the release position is particularly advantageous in order to remove several coherent or interconnected circuit breaker modules 2 together from a mounting rail without having to press the locking slide 10 of each circuit breaker module 2 simultaneously.
- the locking slide 10 is resiliently guided in the latching position by cooperation of the spring arms 12 with the sawtooth contour of the guide 11, so that the circuit breaker module 2 can be snapped by simply plugging it onto the mounting rail on this.
- each blind cover 15a, 15b is snapped onto each end face 14a, 14b of the housing 3, which closes the housing 3 in the region of the pivot lever 7 to the outside.
- Each blind cover 15a, 15b is snapped with three holding projections 16 in corresponding receptacles 17 of the housing 3.
- each blind cover 15a, 15b covered in its mounting position, in particular a provided in each end face 14a, 14b of the housing 3 engagement opening 18 through which the circuit breaker module 2 (as will be explained in more detail) in multi-pole embodiments of the circuit breaker 1 with adjacent circuit breaker modules 2 coupled is.
- Fig. 1 shows two types of blind covers 15a and 15b, which are alternatively auffact snapped onto the housing 3.
- the blind cover 15b differs from the blind covers 15a in that it is additionally provided with a rail 19, which in the assembled state (see. Fig. 3 ) Flanking the pivoting range of the handle 6 and thereby protect against accidental operation of the circuit breaker module. 2 acts.
- Fig. 2 shows the circuit breaker module 2 with the blind covers 15a mounted thereon.
- Fig. 3 shows in a corresponding representation, the circuit breaker module 2 mounted thereon blind covers 15b.
- the circuit breaker 1 further includes labels 20, which are used on both sides in the corresponding receptacles 21 of the housing 3 at the edges of the front page 4.
- the 4 to 6 show the example provided with blind covers 15a circuit breaker module 2 in plan view of the end face 14a (FIG. Fig. 5 ) or on the adjacent side surfaces 22a ( Fig. 4 ) and 22b ( Fig. 6 ) of the housing 3.
- a housing opening 23 is provided, via which a feed connection 24 is accessible for connecting an electrical supply conductor.
- the opposite side surface 22b is provided with a further housing opening 25, via which a load connection 26 is accessible.
- Each side surface 22a, 22b is additionally provided with a respective housing opening 27a or 27b, via which a respectively corresponding signal connection 28a or 28b is accessible.
- the feed terminal 24 is a coupling contact 29 connected in parallel.
- the coupling contact 29 is made accessible via a housing slot 30 from the outside.
- the housing slot 30 extends over the entire housing width, i. from the end face 14a to an opposite end face 14b, and is open to both end faces 14a and 14b.
- each signal terminal 28a and 28b, a further coupling terminal 31 a and 31 b connected in parallel, each of the coupling terminals 31 a and 31 b is accessible via a further housing slot 32 a and 32 b.
- Each housing slot 30,32a, 32b is dimensioned such that each arranged therein coupling contact 29 and 31 a, 31 b is hidden finger-safe and that the required creepage distances are complied with the housing surface. This is achieved in that the housing slots are particularly narrow and deep.
- the slot depth is in the case of the housing slot 30 about 20 mm, in the case of the housing slots 32a, 32b about 10 mm.
- the free slot width is in the case of the housing slot 30 about 4 mm and is in the rear area by guide webs 134, the Flank coupling contact 29 on both sides, reduced to about 1 mm to the outside.
- the free slot width is about 3 mm and is reduced at the rear to the outside to about 1 mm.
- Fig. 7 the circuit breaker module 2 is shown in an exploded view, in particular in which the recorded in the housing 3 functional parts of the circuit breaker module 2 are visible in a separate representation.
- the functional parts of the circuit breaker module 2 are essentially divided into a switching mechanism 40 and an extinguishing device 41.
- the switching mechanism 40 can in turn be subdivided into three functional subgroups, namely a manual operating mechanism 42, a switching arm 43 and a triggering mechanism 44.
- the manual operation mechanism 42 is essentially formed by the pivoting lever 7 and a coupling rod 45, the free end of which is bent approximately at right angles to form a driver 46.
- the manual operation mechanism 42 further includes a torsion spring 47.
- the switching arm 43 has a two-part design and comprises a contact lever 48 and a latch lever 49, which has a pawl 51 cooperating with the driver 46 at a rearward end 50 of the lever.
- the switching arm 43 is biased by a tension spring 52.
- the triggering mechanism 44 comprises a trigger slide 53, an overload release 55 formed essentially of a bimetallic strip 54 and an electromagnetic short-circuit release 56, which comprises a magnetic coil 57 with a magnetic core formed from two core disks 58, a magnetic yoke 49 and a magnet armature 60.
- the armature 60 is connected to a rod-shaped plunger 61 made of plastic and is biased by a compression spring 62.
- the extinguishing device 41 comprises a quenching chamber 63 with a package inserted therein of mutually parallel quenching plates 64 and a first track 65 and second track 66.
- the track rail 65 is integral with the Magnet yoke 59 is formed.
- the running rail 66 is formed together with a power supply 67 as an integrally continuous sheet metal part, wherein the power supply 67 simultaneously forms a support for the bimetallic strip 54.
- the extinguishing device 41 further comprises two cover plates 68a and 68b and baffles 69, which are integrally formed on the inner wall of the housing 3.
- the circuit breaker module 2 further comprises a signal contact device, which is essentially formed by a signal relay 71 which is connected to the signal connections 28a and 28b and the respectively connected coupling contacts 31a and 31b.
- the housing 3 consists of two parts, namely a housing shell 73 and a housing cover 74 which can be placed thereon.
- the housing shell 73 and the housing cover 74 are fixed captive in the assembled state by rivets 75 or screw to each other.
- FIG. 8 and 9 the above-described functional parts of the circuit breaker module 2 are shown in the assembled state, wherein Fig. 8 is a front view of the functional parts, as they would result in a view through the housing cover 74 through the inserted into the housing shell 73 functional parts.
- Fig. 9 shows the functional parts in a rear view, as they would result in a look through the bottom of the housing shell 73 therethrough.
- the housing shell 73 and the housing cover 74 are in the Fig. 8 and 9 omitted for the sake of clarity.
- the latch lever 49 of the switching arm 43 is pivotably mounted about a housing-fixed axis of rotation 80.
- the contact lever 48 is in turn articulated to a pivot 81 on the latch lever 49, so that the switching arm 43 has a certain flexibility in itself.
- the relative mobility of the contact lever 48 with respect of the pawl lever 49 is limited by a slot 82 at a rear end 83 of the contact lever 84, through which the rotation axis 80 passes.
- the rear end 83 opposite free end of the contact lever 48 forms a moving contact 84 which cooperates with a fixed contact 85 to switch a circuit.
- the fixed contact 85 is applied to an upper side of the magnetic yoke 59 at the base of the running rail 65 integrally connected thereto.
- the Fig. 8 and 9 show the circuit breaker module 2 in a closed state of the switching arm 43, in which the moving contact 84 forming the end of the contact lever 48 bears against the fixed contact 85.
- an electrically conductive connection is provided between the feed terminal 24 or coupling contact 29 and the load terminal 26, via the busbar 70, the magnetic coil 57, the yoke 59, the fixed contact 85, the contact lever 48 with the moving contact 84, the bimetallic strip 54 and an adjoining busbar 86 leads.
- the electrical connection between the rear end 83 of the contact lever 48 and the bimetallic strip 54 and between the bimetallic strip 54 and the bus bar 86 is closed by a respective stranded connection 87 a, 87 b, which in the Fig. 8 and 9 is indicated only schematically.
- tension spring 52 engages the contact lever 48 at a between the pivot 81 and the slot 82 (and thus also between the rotary joint 81 and the rotation axis 80) arranged on position.
- the opposite end of the tension spring 52 is re-mounted on the housing 3.
- the switching arm 43 is thus in total by the tension spring 52 in a rotational direction, which in the illustration Fig. 8 a rotation of the switching arm 43 in a clockwise direction, in the illustration according to Fig. 9 a rotation of the switching arm 43 corresponds counterclockwise, biased toward an open position.
- the position of the pawl arm 49 in this closed position is chosen such that the switching arm 43 is "pushed" to a certain extent during closing, that is, the contact lever 48 is clamped relative to the pawl lever 49.
- This tension ensures that the moving contact 84 is always biased against the fixed contact 85 in the closed position, wherein a successively increasing consumption of contact material in the course of the lifetime of the circuit breaker module 2 is compensated by the resilience of the contact lever 48.
- the pivot lever 7 is connected to the housing shell 73 between a in Fig. 7 shown first pivot position and one in the Fig. 8 and 9 shown second pivot position pivotally mounted about a housing-fixed pivot axis 88, wherein - like the Fig. 8 and 9 can be removed - the second pivot position of the pivot lever 7 corresponds to the closed position of the switching arm 43.
- the coupling rod 45 is pivotable with a fixed end 89 and radially movable with respect to the pivot lever 7 in a radial guide 90 of the pivot lever 7.
- the fixed end 89 is guided in a slotted guide 91, which is integrally formed on the inner wall of the housing shell 73 and the housing cover 74 and in the Fig. 8 and 9 is indicated only schematically.
- the slotted guide 91 runs in the manner of a spiral segment on the pivot axis 88, wherein for each position of the pivot lever 7 between the first and the second pivot position, a crossing point of the linear guide 90 and the slotted guide 91 exists, the one corresponding to this position of the pivot lever 7 position of the fixed end 89 of the coupling rod 45 defined.
- the coupling rod 45 is guided mainly linearly by the interaction of the radial guide 90 with the slide guide 91 at a pivoting of the pivot lever 7.
- the pivot lever 7 is biased by the torsion spring 47 in the direction of the first pivot position, so that it is in the second pivot position against the spring pressure the torsion spring 47 is deflected.
- the slide guide 91 is designed such that in the second pivot position mediated via the coupling rod 45 operative connection between the driver 46 and the fixed end 89 above (ie on the handle 6 facing side) of the pivot axis 88, so that the pivot lever 7 through the latching of the driver 46 is held with the pawl 51 of the latching arm 43 against the restoring force of the torsion spring 47 in the second pivot position.
- the manual operation mechanism 42 and the switching arm 43 are thus coupled to each other via the latching of the driver 46 with the pawl 51 so that they stabilize against the respective restoring force of the tension spring 52 and the torsion spring 47 in the closed position and the second pivot position.
- Kem reallyteil the release mechanism 42 is the trip slider 53 which is actuated both by the bit metal strip 54 of the overload release 55 and the plunger 61 of the short-circuit release 56, and the actuation of one of the triggers 55 or 56, the provision of the switching arm 43 from the closed position in FIG the open position causes.
- the trip slider 53 affects this recovery process in two ways, firstly disengaging the shift arm 53 from the cam 46, thereby initiating the automatic restoring process of the shift arm 43 under the action of the tension spring 52, and by pushing the shift arm 43 "to the other ", so he added a pulse pulse to overcome the inertia of the switching arm 43 during the recovery faster and thus to accelerate the switching process.
- Fig. 10 shows an enlarged view of the switching arm 43 again in its closed position in which the inter alia guided by the magnetic coil 57 electrical connection between the feed terminal 24 and the load terminal 26 is closed.
- a short circuit in a circuit connected to the terminals 24 and 16 leads to a sudden increase of the current flowing through the magnetic coil 57 current to a peak, in the case of the illustrated circuit breaker as intended can be up to about 6 kA.
- the strong increase in current causes a proportional increase in the magnetic field generated by the magnetic coil 57, as a result of which the armature 60 is attracted against the force caused by the compression spring 62 restoring force against the arranged inside the magnetic coil 57 core disks 58.
- Each of the core disks 58 is provided with a longitudinal groove.
- the Kemulationn 58 are attached to each other in such a way that the longitudinal grooves complement each other to a implementation in which the plunger 61 slidably rests.
- the plunger 61 is connected to the armature 60 and is advanced during its movement against the trigger slide 53. He strikes against a stop surface 92 of the trip slider 53 and raises the release slide 53 from the in Fig. 9 shown standby position.
- the release slide 53 has a Entklinkungskontur 93.
- the Entklinkungskontur 93 is provided with a recess 94 into which the coupling rod 45 engages with the driver 46 so that the driver 46 is withdrawn from the pawl 51 of the blade lever 49 by the advance of the trigger slide 53.
- the trigger slide 53 is further provided with a projection which serves as a stop 95 for acting on the switching arm 43.
- This (first) stop 95 simultaneously or immediately after the unlatching of the switching arm 43 abuts against it and accelerates the switching arm 43 in the direction of its open position.
- the geometry of the trigger slide 53 is particularly dimensioned such that the stop 95 comes to rest on the switching arm 43 at a time when the switching arm 43 has not yet relaxed.
- the switching arm 43 is in turn designed such that the stop 95 abuts against the contact lever 48 (and not against the latch lever 49). Due to the friction of the contact lever 48 with the stop 95, the rotational mobility of the contact lever 48 is blocked. In this way it is prevented that the switching arm 43 relaxes before lifting the moving contact 84 of the fixed contact 85. Rather, the contact lever 48 is raised immediately with the abutment of the trigger slide 53 (s. Fig. 11 ), which in turn causes the moving contact 84 immediately separated from the fixed contact 85 and the short-circuit current is effectively limited already in
- the trigger slide 53 is arranged in particular such that the stop 95 in the region of the rotary joint 81 strikes the switching arm 43, so that no torque is transmitted relative to the latch lever 49 by the stop 95 on the contact lever 48.
- the contact lever 48 projects beyond the latch lever 49 in the radial direction in the region of the rotary joint 81, so that it is ensured that the stop 95 strikes the contact lever 48.
- Fig. 13 shows the final state of the tripping operation, in which the moving contact 48 abuts against a stop surface 97 which forms a fixed contact 85 at a distance opposite approach of the second running rail 66.
- the release slide 53 is lifted by the interaction of the second stop 96 with the switching arm 43 in a release position in which the Entklinkungskontur 93 of the trigger slide 53 flanking the pawl 51 of the switching arm 43 with a Aufgleitschräge 98.
- the driver 46 is unlatched with the pawl 51, and the pivot lever 7 is no longer held in the second pivot position and returns under the action of the torsion spring 47 in the first pivot position.
- the driver 46 is pushed out of the recess 94 of the Entklinkungskontur 93 and slides the Aufgleitschräge 98 down until it locks behind the latch 51 again.
- the engagement of the driver 46 behind the pawl 51 is by a spring tab 72 ( Fig. 8 ), which is molded integrally on the pivot lever 7 and pushes the coupling rod 45 in the second pivot position of the pivot lever 7 against the Aufgleitschräge 98.
- the switching arm 43 is thereby again coupled to the manual operation mechanism 42 and can by manual pivoting of the pivot lever 7 in the closed position according to Fig. 9 be reset.
- the driver 46 by interaction of the driver 46 with the Aufgleitschräge 98 simultaneously the trip slider 53 in the ready position according to Fig. 9 shifted back, provided that the displacement of the trigger slide 53 is no obstacle.
- the driver 46 slides on the Aufgleitschräge 98 upwards and is in turn lifted by the pawl 51.
- 10 to 13 is recognizable - cut from the power supply 67 such that the running rail 66 is guided along in the region of the stop surface 97 on the contact lever 48 abutting in its open position, and - viewed from the moving contact 84 along the contact lever 48 - only behind the moving contact 84 in the power supply 67 goes over.
- the guided from the fixed contact 85 via the arc gap to the moving contact 84 thus current, even if the contact lever 48 is already applied to the stop surface 97, as before the abutment of the contact lever 48 within the contact lever 48 or the running rail 66 a certain distance in the direction of the Rear lever end 83 flow until it is discharged via the power supply 67 in the opposite direction.
- the running rail 66 is cut out centrally from the power supply 67 in order to ensure a symmetrical current flow in the transition region.
- the magnetic yoke 59 into which the running rail 65 is integrated, is not closed in a circle around the magnetic coil 57. Rather, the yoke 59 is on a magnet armature 60 facing the bottom through a narrow air gap 99 (FIGS. FIGS. 8 and 9 ) interrupted.
- the air gap 99 is dimensioned such that it does not significantly affect the magnetic flux within the magnetic yoke 59, but effectively prevents current flow over the gap gap. It is rather within the magnetic yoke 59 always from an output 100 ( Fig. 8 In the context of this description, the direction of the current path is specified independently of the actual current flow direction as starting from the feed connection 24 or coupling contact 29 and aligned with the load connection 26 ).
- the arc enters the quenching chamber 63 and is divided by the quenching plates 64 into a number of partial arcs.
- the quenching plates 64 favor the extinguishing of the arc in a conventional manner by multiplying the total voltage across the entire arc gap and the arc is cooled.
- the extinguishing device 41 is provided with an air compensation system whose function in Fig. 14 is illustrated schematically.
- Fig. 14 shows the extinguishing device 41 in a schematic section through the quenching chamber 63 and the arc run space 101 along a cutting line which coincides approximately with the running rail 66.
- the arc run space 101 is closed toward both end faces by the cover plates 68a and 68b.
- Each cover plate 68a, 68b is in turn arranged at a distance from the adjacent wall of the housing 3, so that between the cover plates 68a, 68b and the housing 3 on both sides of the arc run space 101 and parallel to this ever a pressure equalization channel 103a and 103b is formed.
- Each pressure equalization channel 103a, 103b corresponds via a first opening 104 to an area of the arc run area 101 adjacent to the inlet 102 and to a second opening 105, which is embedded in the respective cover plate 68a, 68b and having one Contacts 84,85 surrounding area of the arc run space 101.
- P pressure wave occurs in the pressure equalization channels 103 a, 103 b to a backflow R, reduced by the overpressure at the inlet of the quenching chamber 63 and the emergence of a Negative pressure in the region of the contacts 84 and 85 is avoided.
- the quenching chamber 63 has an outlet 106 (FIG. Fig. 14 ) on.
- the damming of this outlet 106 ie the ratio of the free cross-sectional area of the outlet 106 to the free cross-sectional area of the inlet 102, is about 42%.
- This cross-sectional constriction has proven to be particularly suitable for slowing down the propagation of the arc in the quenching chamber 63, in order to avoid that the arc simply passes through the quenching chamber 63 and reignites at the outlet 106, in order to keep the quenching chamber sufficiently permeable on the other hand that the arc quickly enters the quenching chamber 63.
- the damming is effected essentially by a separating web 107 made of insulating material, which is integrally formed on the outlet 106 of the extinguishing chamber 63 and protrudes therefrom in the propagation direction P.
- This separating web 107 furthermore effects separation of the gas stream leaving the quenching chamber 63 into two partial streams and thus further impedes flashback of the electric arc.
- the guide plates 69 further direct the partial flows T1 to T8 in the direction of the side surface 22b (ie in the illustration according to FIG Fig. 14 approximately to the viewer) and thus avoid a pressure accumulation at the outlet 106 of the quenching chamber 63, which would favor the flashback of the arc.
- the trip takes place in principle the same way as in the short circuit case described above.
- the trip slider 53 does not become the ram 61 of the short-circuit release 56 but the bimetallic strip 54 of the overload release 55, which heats up due to the overload current and thereby deflects such that its free end 110 (FIG. Fig. 15 ) abuts against a projection of the trigger slide 53, which is referred to as attack 111 below.
- the attack 111 is formed in two parts and includes an integrally formed on the trigger slide 53 bracket 112 (FIGS. Fig. 15 ) on which an eccentric 113 ( Fig. 16 ) is rotatably mounted.
- the holder 112 is in this case with a ring gear 114 ( Fig. 15 ) which, in cooperation with a corresponding detent tooth 115 (FIG. Fig. 16 ) of the eccentric 113 allows the eccentric 113 to lock in a plurality of defined rotational positions relative to the holder 112.
- the trigger slide 53 further comprises a cantilever 116 (FIG. Fig. 9 ).
- the boom 116 is configured to actuate the signal relay 71 when the trip slider 53 is in the standby position. As if in synopsis of FIGS. 10 to 13 can be removed, the boom 116 releases the signal relay 71 in its movement into the release position. On the switching state of the signal relay 71 can thus be queried the position of the trip slider 53, and consequently the state of the trigger mechanism 44.
- the Figures 17 and 18 show two circuit breaker modules 2 of the type described above, which are assembled into a two-pole design of the circuit breaker front 1.
- the coupling piece 120 comprises a body 121 which is provided with two fixing projections 122 each.
- the fixing projections 122 are in corresponding receptacles 17 on the adjacent end faces 14a and 14b of the respective adjacent Circuit breaker module 2 snap-in, so that over the coupling piece 120 and the juxtaposed circuit breaker modules 2 are mechanically fixed together.
- a handle coupling 123 and on the other hand, a release coupling 124 is formed on this body 121 on the one hand.
- the handle coupling 123 is molded on a film hinge 125 pivotally mounted on the body 121 and engages in a Fig. 18 illustrated mounting state on both sides in the handles 6 of the adjacent circuit breaker modules 2, so that the pivot lever 7 of this circuit breaker modules 2 are coupled together in always aligned pivoting position.
- the triggering coupling 124 is flexibly molded onto the body 121 via a spring arm 126 bent in a meandering manner and, in the assembled state, engages on both sides through the engagement opening 18 of the respectively adjacent housing wall on a coupling projection 127 (FIG. FIGS. 8 to 10 ) of the trip slider 53 of the respective circuit breaker module 2 to.
- the trip slider 53 of both circuit breaker modules 2 are coupled such that by triggering a circuit breaker module 2, the respective other circuit breaker module 2 is triggered.
- both a mechanical fixation of the circuit breaker modules 2 and a dynamic coupling of both the manual actuation mechanism 42 and the actuation mechanism 44 of both circuit breaker modules 2 are thus achieved by means of an integral component
- circuit breaker modules 2 are additionally connected to each other by brackets 128 on the side surfaces 22a, 22b and the back 8.
- the respective outer end faces 14a, 14b of the circuit breaker modules 2 are each covered by a blind cover 15a (or 15b). Further front covers 129 close off the area of the front side 4 between the circuit breaker modules 2 arranged around the pivot lever 7.
- FIGS. 19 to 21 show a five-pole design of the circuit breaker 1, in which this is connected in the manner of a power distributor. With a power distributor is common a common power supply is provided, branched off from the branch lines to supply a number of poles corresponding number of load circuits via a respective separate circuit breaker module 2.
- a dynamic coupling of the individual circuit breaker modules 2 is not desirable in a power distribution in the rule.
- the circuit breaker modules 2 are according to Fig. 19 Therefore (in contrast to the embodiment of the circuit breaker 1 described above) without interposed coupling pieces 120 juxtaposed.
- a busbar 130 which extends as a profile part substantially over the entire width of the juxtaposed circuit breaker modules 2, inserted into the aligned housing slots 30 so that the coupling contacts 29 of the circuit breaker modules 2 are short-circuited via the busbar 130.
- the connection of the circuit breaker modules 2 to an external supply line is carried out as intended via the feed terminal 24 of a circuit breaker module. 2
- the bus bar 130 is provided with a back cover 131 of insulating material. In the inserted state, only this back cover 131 protrudes on the side surface 22a and closes the housing slot 30 to this side surface 22a touch-safe ( Figures 20 . 21 ). To the outer end faces 14a, 14b of the circuit breaker modules 2, the busbar 130 is covered by end strip 132
- Each end strip 132 is provided with a peripheral circumferential guide groove 133. With this guide groove 133 of the end strip 132 is pushed onto a guide web 134 which rotates the edge of the housing slot 30 at each end face 14a, 14b.
- a guide web 134 which rotates the edge of the housing slot 30 at each end face 14a, 14b.
- an end strip 132 is preferably molded over a predetermined breaking point on the back 8 of the housing 3 of each circuit breaker module 2, so that it can be broken off if necessary and inserted into the housing slot 30.
- busbar pieces 135a and 135b are shown, which in the same way as the busbar 130 in the housing slots 32a or 32b are insertable to couple the coupling contacts 31 a, 31 b of the signal terminals 28a, 28b.
- the FIGS. 19 to 21 show a first type of busbar pieces 135a, each of which short-circuits only the coupling contacts 31a or 31b of two directly adjacent circuit breaker modules 2.
- One in the Figures 19 and 21 shown further type of busbar pieces 135b is formed from profile material and can be cut to length (as with the busbar 130) as desired to short any number of coupling contacts 31a or 31b.
- busbar pieces 135a and 135b can be used alternatively or in any combination to interconnect the signal circuits of the circuit breaker modules 2 together.
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Breakers (AREA)
- Switch Cases, Indication, And Locking (AREA)
- Arc-Extinguishing Devices That Are Switches (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL06805855T PL2030213T3 (pl) | 2006-06-12 | 2006-09-25 | Wyłącznik ochronny |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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DE102006027140A DE102006027140A1 (de) | 2006-06-12 | 2006-06-12 | Schutzschalter |
PCT/EP2006/009296 WO2007144017A1 (de) | 2006-06-12 | 2006-09-25 | Schutzschalter |
Publications (2)
Publication Number | Publication Date |
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EP2030213A1 EP2030213A1 (de) | 2009-03-04 |
EP2030213B1 true EP2030213B1 (de) | 2012-07-25 |
Family
ID=37564241
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EP06805854A Active EP2030216B1 (de) | 2006-06-12 | 2006-09-25 | Schutzschalter |
EP06805855A Not-in-force EP2030213B1 (de) | 2006-06-12 | 2006-09-25 | Schutzschalter |
EP06805853A Not-in-force EP2030215B1 (de) | 2006-06-12 | 2006-09-25 | Schutzschalter |
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EP06805854A Active EP2030216B1 (de) | 2006-06-12 | 2006-09-25 | Schutzschalter |
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EP06805853A Not-in-force EP2030215B1 (de) | 2006-06-12 | 2006-09-25 | Schutzschalter |
Country Status (10)
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US (3) | US7834290B2 (pl) |
EP (3) | EP2030216B1 (pl) |
JP (3) | JP5244791B2 (pl) |
CN (3) | CN101461023B (pl) |
AU (3) | AU2006344590B2 (pl) |
CA (3) | CA2656061C (pl) |
DE (4) | DE102006027140A1 (pl) |
ES (3) | ES2391294T3 (pl) |
PL (3) | PL2030216T3 (pl) |
WO (3) | WO2007144016A1 (pl) |
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-
2006
- 2006-06-12 DE DE102006027140A patent/DE102006027140A1/de not_active Withdrawn
- 2006-09-25 JP JP2009514646A patent/JP5244791B2/ja active Active
- 2006-09-25 PL PL06805854T patent/PL2030216T3/pl unknown
- 2006-09-25 AU AU2006344590A patent/AU2006344590B2/en not_active Ceased
- 2006-09-25 ES ES06805854T patent/ES2391294T3/es active Active
- 2006-09-25 DE DE202006021096U patent/DE202006021096U1/de not_active Expired - Lifetime
- 2006-09-25 PL PL06805853T patent/PL2030215T3/pl unknown
- 2006-09-25 AU AU2006344592A patent/AU2006344592B2/en not_active Ceased
- 2006-09-25 DE DE202006021064U patent/DE202006021064U1/de not_active Expired - Lifetime
- 2006-09-25 CN CN2006800549582A patent/CN101461023B/zh active Active
- 2006-09-25 DE DE202006021095U patent/DE202006021095U1/de not_active Expired - Lifetime
- 2006-09-25 AU AU2006344591A patent/AU2006344591B2/en not_active Ceased
- 2006-09-25 CA CA2656061A patent/CA2656061C/en not_active Expired - Fee Related
- 2006-09-25 CA CA2654002A patent/CA2654002C/en not_active Expired - Fee Related
- 2006-09-25 JP JP2009514645A patent/JP4827966B2/ja not_active Expired - Fee Related
- 2006-09-25 EP EP06805854A patent/EP2030216B1/de active Active
- 2006-09-25 WO PCT/EP2006/009295 patent/WO2007144016A1/de active Application Filing
- 2006-09-25 ES ES06805855T patent/ES2391295T3/es active Active
- 2006-09-25 PL PL06805855T patent/PL2030213T3/pl unknown
- 2006-09-25 CA CA2653649A patent/CA2653649C/en not_active Expired - Fee Related
- 2006-09-25 CN CN200680054946XA patent/CN101461021B/zh not_active Expired - Fee Related
- 2006-09-25 WO PCT/EP2006/009296 patent/WO2007144017A1/de active Application Filing
- 2006-09-25 EP EP06805855A patent/EP2030213B1/de not_active Not-in-force
- 2006-09-25 CN CN2006800549440A patent/CN101461022B/zh not_active Expired - Fee Related
- 2006-09-25 JP JP2009514647A patent/JP4827967B2/ja not_active Expired - Fee Related
- 2006-09-25 WO PCT/EP2006/009294 patent/WO2007144015A1/de active Application Filing
- 2006-09-25 ES ES06805853T patent/ES2391293T3/es active Active
- 2006-09-25 EP EP06805853A patent/EP2030215B1/de not_active Not-in-force
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2008
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