EP3248204B1 - Disjoncteur de protection - Google Patents

Disjoncteur de protection Download PDF

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Publication number
EP3248204B1
EP3248204B1 EP16701160.0A EP16701160A EP3248204B1 EP 3248204 B1 EP3248204 B1 EP 3248204B1 EP 16701160 A EP16701160 A EP 16701160A EP 3248204 B1 EP3248204 B1 EP 3248204B1
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EP
European Patent Office
Prior art keywords
contact
contact plate
circuit breaker
lever
current path
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.)
Active
Application number
EP16701160.0A
Other languages
German (de)
English (en)
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EP3248204A1 (fr
Inventor
Jozef Smrkolj
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Individual
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Individual
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Publication of EP3248204A1 publication Critical patent/EP3248204A1/fr
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/02—Housings; Casings; Bases; Mountings
    • H01H71/0207—Mounting or assembling the different parts of the circuit breaker
    • H01H71/0228—Mounting or assembling the different parts of the circuit breaker having provisions for interchangeable or replaceable parts
    • 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
    • H01H71/122—Automatic release mechanisms with or without manual release actuated by blowing of a fuse
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/02—Details
    • H01H85/30—Means for indicating condition of fuse structurally associated with the fuse
    • H01H85/303—Movable indicating elements
    • H01H85/306—Movable indicating elements acting on an auxiliary switch or contact
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/20—Bridging contacts
    • 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

Definitions

  • the present invention relates to a circuit breaker with two parallel current paths, each with a contact point, which are connected as a main and Maustrompfad via a contact device with a coil of a magnetic release in each case in series.
  • overcurrent protection devices are fuse-link systems in which a replaceable fuse link is interposed between a fuse block via which contact is made with a first terminal and a screw cap via which electrical contact is made with a second terminal.
  • a fuse element of the fuse link melts to break the current path between the terminals.
  • an indicator or indicator pin is provided, which is pushed out of a contact head of the fusible link by a spring when the fusible conductor and a holding wire holding the detector melted are.
  • house connection protection is prescribed as a connection device in buildings in accordance with the "TAB technical connection conditions", the size of which the grid operator prescribes. Since domestic connection fuses must not be used as a separator for the customer system, a selective overcurrent protection device must also be provided to enable the system as required.
  • Such overcurrent protection device usually has a selective circuit breaker, as shown for example in the DE 10 2011 016 933 A1 is described, and arranged in the same line in accordance with regulations fuse. In normal operation, this arrangement consumes approximately 0.5 ⁇ of the electrical power transported and protected by it. This leads to heat generation in the overcurrent protection devices, connection devices and circuit distributors, the temperature increases has the consequence, which must be considered in the design of the overcurrent protection devices to prevent malfunction by the mutual influence of the protection devices in the system.
  • the DE 10 2007 039 943 A1 shows a circuit breaker with two parallel current paths. However, these are coupled by two separate contact devices.
  • the US 3 553 038 A Although shows the use of a removable fuse in a circuit breaker. However, the fuse does not serve as a trigger unit for a switching mechanism.
  • the US 2,939,936 A shows the use of a fuse with a striker as a trigger in a three-phase circuit breaker.
  • the striker acts on a pivot lever so that it releases a trigger pin of the circuit breaker to release a latch of a switch latch.
  • the fuse is connected in series with a bimetal and a magnetic release of the circuit breaker.
  • the EP 2 690 642 A1 shows an electromagnetic relay contactor and the like with a triangular contact plate.
  • the invention has for its object to provide a circuit breaker, the minimized in normal continuous operation energy losses the formation of an arc when interrupting the circuit in case of failure and thus also a burning of contacts largely prevented.
  • a breaker and tripping insert is provided in Finestrompfad, which interrupts the bypass circuit in the event of a short circuit and triggers a switching mechanism for opening and fixing the open contact device.
  • the functions of a house connection fuse with the separator are combined in a compact circuit breaker.
  • the contact point of the main current path which carries the operating current as a so-called empty contact, without interruption of the short-circuit current is opened to this on the Maustrom path and thus by the breaker and tripping insert to lead. No arc occurs.
  • the breaker and trip insert then interrupts the bypass path, without causing the subsequent contacts to open the contact point of the secondary current path at the corresponding contacts to an arc.
  • the breaker and tripping insert is arranged interchangeable in the secondary flow path between two contact elements, in particular terminal contact elements. This allows easy replacement of the breaker and trip unit.
  • the breaker and tripping insert is a fuse link whose fusible wire and / or retaining wire, which melts together with the fusible wire in the event of a short circuit, holds a striking pin in its ready position against the force of a spring. This not only ensures that a short-circuit current is reliably interrupted, but also that the switch lock is triggered to bring the contact device in its OFF position and to fix it. The opening of the contact point of the secondary current path takes place without current, ie without the risk of the formation of an arc.
  • the prescribed fuse according to the invention as a fuse in the bypass path, in which preferably also serving as overcurrent release thermal release, it is possible to avoid the power losses of the overcurrent release and the fuse in normal operation, since the overcurrent release and the fuse only in case of failure for Electric lines are protected by current but not during normal operation.
  • a housing cap covering the breaker and tripping insert in the secondary current path will only be activated when the housing is switched off Circuit breaker, in particular for replacing the breaker and release insert or the fuse is removable.
  • a particularly advantageous embodiment of the invention is characterized in that the contact device has a contact plate, which can be brought into engagement with three contacts, of which the first contact with a terminal, the second contact with another terminal and the third contact with the breaker - And tripping insert is connected in the secondary flow path, wherein the third contact is preferably connected via a thermal release, which is in particular designed as a bimetal element, with the breaker and tripping insert in the secondary flow path.
  • the contact device can be made extremely simple and uncomplicated in order to simultaneously form the contact point of the main current path and the contact point of the secondary current path. Furthermore, the triangular contact plate allows the circuit breaker litzenein with only a few parts and thus inexpensive to manufacture.
  • the contact plate is arranged on a shaft of a contact plate carrier and is pressed by a spring against the contacts when the contact plate carrier assumes its ON position, wherein the contact plate for opening the contact point of the main current path from the armature of the magnetic release against the force of the spring about a pivot axis formed by the first and third contact away from the second contact is.
  • the contact point of the main current path can be reliably interrupted in a simple manner without an arc occurring, since the contact point in the secondary current path remains reliably closed, that is, reliably held in its ON position.
  • the closing force of the force acting on the contact plate spring for the contact point in the secondary flow path is not affected, but increased by the pivotal movement of the contact plate against the force of the spring.
  • the contact plate is separable under the action of a switching spring of the contacts, wherein the contact plate carrier and thus also the contact plate of the attacking on the contact plate carrier switching spring to open the contact points from his / its closed or ON position in his / her open or OFF position is movable.
  • the contact plate carrier is fixed by a pawl of the switching mechanism in its closed or ON position, the thermal release and the striker of the breaker and release insert each acting in the event of triggering on the pawl of the switching mechanism to the fixation of the Releasing contact plate carrier to open the contact points, so that the switching spring causes the sudden movement of the contact plate carrier and the contact plate from the ON to the OFF position.
  • the contact device has a contact plate which is engageable with three contacts which form a triangle and of which the first contact with the coil of the magnetic release, the second contact with the main current path and the third contact is connected to the secondary current path, that the contact plate is pressed by a spring against the contacts, which acts within the triangle formed by the contacts on the contact plate, and that the armature of the magnetic release in case of failure via a pivot lever, a force on the contact plate which acts in the same direction on the contact plate as the force of the spring to pivot the contact plate about a pivot axis formed by the first and third contact against the force of the spring and so the contact plate for opening the contact point of the main current path from the second contact a bzulander.
  • the striker of the magnetic release which interrupts the main current path in case of overcurrent and short circuit, so according to the invention indirectly via a pivot lever so on the contact plate, so that the force generated by the magnetic release force to open the contact from the same side acts on the contact plate, as the spring to close the contacts.
  • the force is applied to two sides of a pivot axis about which the contact plate is pivotable like a rocker. In this way it is achieved that when opening the second contact for interrupting the main current path, the other two contacts can be reliably kept closed, so that a small arc, even if the opening of the second contact on the first or third Contact could occur reliably prevented, since when opening the second contact to interrupt the main current path no force acts in the opening direction of the contacts on the contact plate.
  • the contact plate has an extending from the first and third contact formed pivot axis and the region of the triangular arrangement of the contacts away extending extension on which the pivot lever engages.
  • the contact plate is provided with three mating contacts, with which it can be brought into engagement with the first to third contacts.
  • the pivot lever is pivotable about a pivot axis which is substantially parallel to the pivot axis of the contact plate formed by the first and third contact, and that it has a first lever arm on which the striker of the magnetic release engages, and has a second lever arm, is engageable with the pivot lever with the extension of the contact plate to open the second contact.
  • the breaker and release insert has a striking pin with which it acts on the switching mechanism via a lever, the lever having a first lever arm, on which the striking pin of the trigger insert engages, and a second lever arm , via which he acts on the latch of the switch lock.
  • the lever acting on the switch lock is arranged relative to the pivot lever acting on the contact plate so that it fixes the pivot lever in its release position, when it is pivoted from its rest position to its release position, wherein the second lever arm of the pivot lever has an extension which extends in the direction transverse to the pivot axis thereof, and the second lever arm of the lever and the extension of the pivot lever are formed so that second lever arm engages with its free end on the extension.
  • the circuit breaker according to a first embodiment of the invention, a magnetic release 10 with a coil 11 and an armature 12 which acts via a striker 14 on a contact plate 15.
  • the coil 11 is connected at one end to a terminal 16 and at its other end to a first contact 17.
  • the contact 17 is connected via the contact plate 15, on which the mating contact to the first contact 17 is formed, to a second contact 18, which is connected via an electrical line element, which forms a main current path 19, to a further connection terminal 20.
  • the main current path 19 is in the on state with the coil 11 of the magnetic release 10 in series and thus connects together with the coil 11, the two terminals 16 and 20 of the circuit breaker according to the invention.
  • the connection terminals 16 and 20 are connected exclusively by the series connection of the coil 11, the first contact 17, the contact plate 15, the second contact 18 and the electrical line element of the main current path 19.
  • a secondary current path 21 is connected between a third contact 22 and the further connection terminal 20.
  • the third contact 22 is electrically connected to a thermal release 23, preferably formed by a bimetallic element, which is connected in series with a thermal breaker and tripping insert 24.
  • the breaker and trip insert 24 is interchangeable between two non-switching contact elements 25, 26, which may be formed as terminal contacts, used, of which the first contact element 25 via a line member 27 with the thermal release 23 and the second contact element 26 via another line element 28 is connected to the other terminal 20.
  • thermal trip 23 and breaker and trip insert 24 it is also possible to reverse the order of thermal trip 23 and breaker and trip insert 24 depending on the installation conditions in the circuit breaker, so that the breaker and trip insert 24 directly with the third contact 22nd is connected while the thermal release 23 between the breaker and trip insert 24 and the other terminal 20 is arranged.
  • the breaker and tripping insert 24 has a striking pin 29, with which it acts on a switching mechanism 30, as indicated by the dashed line 31 in FIG FIG. 1B is indicated.
  • the bimetal element of the thermal release 23 also acts on the switch lock 30, as indicated by the dashed line 32.
  • the switch latch 30 which will be further described below as necessary, is also operable by a manual switch 33 and in turn also acts on the switch 33, as shown by the dashed double arrow 34, to move it to its OFF position the circuit breaker in case of failure interrupts the faulty area of the power supply, so if the circuit breaker due to an overcurrent or a short circuit both the main and the secondary current path between the terminals 16, 20 interrupts.
  • the preferably substantially triangular or V-shaped contact plate 15 has a non-illustrated passage opening or passage area between the legs of the V and is, as particularly well in FIG. 4A can be seen, mounted on a shaft 35 of a contact plate carrier 36 which extends through the passage opening or the passage region of the contact plate 15 therethrough.
  • the contact plate carrier 36 and its shaft 35 are slidably mounted parallel to the direction of impact of the striker 14 of the magnetic release 10 in a housing 37 of the circuit breaker.
  • a spring 38 is mounted on the shaft 35, which is supported with its one end to a shoulder 39 of the contact plate carrier 36 and with its other end on the contact plate 15 to these as in Figure 1A is shown, with the first to third contacts 17, 18, 22 or as in FIG. 4A shown with a retaining shoulder 40 on the shaft 35 of the contact plate carrier 36 to be engaged.
  • the contact plate carrier 36 is held by a pawl 41 against the force of a switching spring 42 in its ON position in which the contact plate 15 is lifted from the retaining shoulder 40 and under the pressure of the spring 38 on the contacts 17, 18, 22nd rests to keep the circuit breaker in its ON state.
  • the current flows from the terminal 16 via the coil 11 of the magnetic release 10 to the first contact 17, via the contact plate 15 to the second contact 18 and via the electrical line element of the main current path 19 to the other terminal 20.
  • the contact 22 is closed flows over the Maustrompfad with the thermal release 23 and the breaker and trip insert 24 virtually no electricity, since the Crowstrompfad 21 is short-circuited by the main current path 19.
  • the magnetic release 10 responds and the armature 12 strikes the striking pin 14 against the contact plate 15, as in FIG. 2A shown and in FIG. 2B is shown by the dashed line of action 43.
  • the contact plate 15 is thereby pivoted against the force of the spring 38 about an axis formed by the contacts 17, 22 pivot axis, so that the contact plate 15 is lifted with its corresponding mating contact from the contact 18 and the contact 18 is thus opened, while the first and third Contact 17, 22 stay closed.
  • a compression spring is shown as spring 38, which is further compressed by the pivotal movement of the contact plate 15, whereby the contact plate 15 is held with increased force with the contacts 17 and 22 in engagement.
  • the overcurrent continues to flow through the coil 11 of the magnetic release 10, the contact plate 15 and now via the secondary current path 21 and thus by the bimetallic element of the thermal release 23 and the breaker and trip insert 24.
  • the overcurrent heats the bimetallic element, but does not bring the breaker and trigger insert 24 for response. Since the overcurrent when opening the first contact 17, that is not interrupted when interrupting the main flow path 19, but only to the secondary flow path 21 is passed when opening the first contact 17 no arc.
  • the bimetallic element of the thermal release 23 in the direction of FIG. 2A Bent arrow A and occurs with a first contact lug 41 'on the pawl 41 in contact and pivots it clockwise about its axis of rotation 44 against the force of a pawl spring, not shown, so that the pawl 41 releases a retaining pin 45 on the contact plate carrier 36.
  • the switching spring 42 moves after the release of the retaining pin 45 of the contact plate carrier 36 this in his in FIG. 4A illustrated OFF position.
  • the switching spring 42 pivots on a rotatably mounted Shift lever 46 of the switch 33 is supported, the shift lever 46 in his in FIG. 4A shown, the OFF state of the circuit breaker indicating position.
  • the contact plate carrier 36 which is engaged with its retaining pin 45 with the pawl 41, moved by the hinged on the rotary lever 46 pawl 41 back into its closed or ON position.
  • the switching spring 42 is tensioned.
  • circuit breaker according to the invention has been switched to its OFF state due to an overcurrent by the thermal release 23, it can be switched on again immediately after the fault has been eliminated without further measures. Even in the event that the overcurrent only briefly applied to the circuit breaker, for example, has responded to a downstream circuit breaker and has turned off the troubled area of the mains, the armature 12 falls back and the spring 38, the contact plate back into the in Figure 1A bring shown ON position.
  • the lever 48 has at its bearing part 49 a cam 50 which engages with a second contact nose 51 of the pawl 41 during the pivoting movement and pivots this against the force of the pawl spring in a clockwise direction, so that it releases the retaining pin 45 of the contact plate carrier 36, whereupon the contact plate carrier 36 as in the case of an overcurrent from the shift spring 42 in his in FIG. 4A drawn OFF position is pulled.
  • a cam 50 which engages with a second contact nose 51 of the pawl 41 during the pivoting movement and pivots this against the force of the pawl spring in a clockwise direction, so that it releases the retaining pin 45 of the contact plate carrier 36, whereupon the contact plate carrier 36 as in the case of an overcurrent from the shift spring 42 in his in FIG. 4A drawn OFF position is pulled.
  • due to the interruption of the main and Maustrompfads de-energized contacts 17, 22 are opened without it can come to an arc.
  • the breaker and release insert 24 is suitably formed by a fuse link, the fuse wire and / or retaining wire in a manner not shown, the contact pin 29 against the force of a release spring in his in the Figures 1A . 2A and 4A holding position shown holds.
  • the breaker and trip unit 24 After triggering the circuit breaker in the event of a short circuit, the breaker and trip unit 24 must be replaced.
  • a removable cap 52 or the like provided on the housing 37 of the circuit breaker a removable cap 52 or the like.
  • the cap 52 is provided with a rod-shaped extension 53 which has at its free end a hook 54 which engages under or behind the breaker and release insert 24. If the cap 52, optionally after the release of suitable fasteners (not shown), removed in the drawing upwards, so the breaker and release insert 24 is taken simultaneously with the top and pulled out between the terminal contact elements 25, 26. The breaker and tripping insert 24 can thus be removed without tools from the circuit breaker according to the invention and replaced by a new one.
  • the circuit breaker Since the switching lever 46 secures the cap 52 in the switched-on state with its operating section against removal, the circuit breaker must be turned off before replacing the breaker and trip insert 24. However, if this is not done beforehand, the circuit breaker is forcibly turned off since not only the operating portion of the shift lever 46 of the manual switch 33 blocks the removal of the cap 52 and is thus forcibly operated upon the removal of the cap 52, but also the lever 48, which cooperates with the striker 29 of the breaker and trip insert 24 is actuated. It can thus be ensured that the region of the circuit breaker opened after the removal of the cap 52 has been de-energized. The the breaker and release insert (24) covering the cap (52) is thus removable only in the off state of the circuit breaker.
  • a circuit breaker according to another exemplary embodiment of the invention, a magnetic release 10 with a coil 11 and an armature 12 which acts on a contact plate 15 via a striker 14 and a pivot lever 114 which will be described in more detail below.
  • the coil 11 is connected at one end to a terminal 16 and at its other end to a first contact 17.
  • the main current path 19 is in the on state with the coil 11 of the magnetic release 10 in series and thus connects together with the coil 11, the two terminals 16 and 20 of the circuit breaker according to the invention.
  • the connection terminals 16 and 20 are connected exclusively by the series connection of the coil 11, the first contact 17, the contact plate 15, the second contact 18 and the electrical line element of the main current path 19.
  • a secondary current path 21 is connected between a third contact 22 and the further connection terminal 20.
  • the third contact 22 is electrically connected to a thermal release 23, preferably formed by a bimetallic element, which is connected in series with a thermal breaker and tripping insert 24.
  • the breaker and trip insert 24 is interchangeable inserted between two non-switching contact elements, of which a first contact element 25 via a line member 27 with the thermal release 23 and a second contact element via another line element (not shown) to the other terminal 20 is connected.
  • thermal trip 23 and breaker and trip insert 24 it is also possible to reverse the order of thermal trip 23 and breaker and trip insert 24 depending on the installation conditions in the circuit breaker, so that the breaker and trip insert 24 is directly connected to the third contact 22, during the thermal Trigger 23 is disposed between the breaker and trip insert 24 and the other terminal 20.
  • the breaker and tripping insert 24 has a striker 29, with which it acts via a lever 148 on a switching mechanism 30, as indicated by the dashed line 31 in FIG FIG. 5C is indicated.
  • the bimetal element of the thermal release 23 also acts on the switch lock 30, as indicated by the dashed line 32.
  • the switch latch 30 which will be further described below as necessary, is also operable by a manual switch 33 and in turn also acts on the switch 33, as shown by the dashed double arrow 34, to move it to its OFF position the circuit breaker in case of failure interrupts the faulty area of the power supply, so if the circuit breaker due to an overcurrent or a short circuit both the main and the secondary current path 19, 21 between the terminals 16, 20 interrupts.
  • the contact plate 15 is slidably mounted and pivotally mounted on a contact plate carrier 36, which in turn is mounted parallel to the direction of impact of the striker 14 of the magnetic release 10 in a housing 37 of the circuit breaker slidably.
  • a spring 38 is mounted on the contact plate carrier 36, which is supported with its one end to the contact plate carrier 36 and with its other end on the contact plate 15 to these as in FIG. 5A is shown, with the first to third contacts 17, 18, 22 or as for example in FIG. 7A shown to be engaged with a retaining shoulder 40 on the contact plate carrier 36.
  • the contact plate 15 has (see FIG. 5B ) three mating contacts 17 ', 18' and 22 'on (of which the third mating contact 22' corresponding to the third contact 22 in the drawing by the first mating contact 17 'is covered), with which they with the first to third contacts 17, 18th and 22 are engageable and form a triangle corresponding to the triangular arrangement of the first to third contacts 17, 18 and 22.
  • the contact plate 15 further includes a pivot axis formed by one of the first and third contacts 17, 22 and the portion 15 "of the triangle arrangement of the mating contacts 17 ', 18', 22 'extending extension 15' (see FIG. 5B ) on.
  • the spring 38 which the Contact plate 15 in engagement with the first to third contacts 17, 18 and 22 holds, engages within the triangle formed by the contacts 17, 18, 22, ie in the region 15 "of the triangular arrangement of the mating contacts 17 ', 18', 22 'on the Contact plate 15 on.
  • the pivoting lever 114 is pivotable about a pivot axis 114 ', which runs substantially parallel to the pivot axis of the contact plate 15 formed by the first and the third mating contact 17', 22 ', and has a first lever arm 115, on which the striker pin 14 in case of failure of the magnetic release 10 engages, and a second lever arm 116 with a contact lug 116 ', with the pivot lever 114 in case of failure on the extension 15' of the contact plate 15 acts to these to their from the first and third mating contact 17 ', 22' Swivel pivot axis.
  • the pivot lever 114 may also have another suitably designed contact area for engagement with the contact plate 15.
  • an extension 117 is provided on the second lever arm 116 of the pivot lever 114, which extends in the direction transverse to the pivot axis 115 of this away.
  • the contact plate carrier 36 is held by a pawl 41 against the force of a switching spring 42 and the spring 38 in its ON position in which the contact plate 15 is lifted from the retaining shoulder 40 and under the pressure of the spring 38 on the contacts 17th , 18, 22 rests in order to hold the circuit breaker in its ON state.
  • the current flows from the terminal 16 via the coil 11 of the magnetic release 10 to the first contact 17, via the contact plate 15 to the second contact 18 and via the electrical line element of the main current path 19 to the other terminal 20.
  • the contact 22 is closed flows via the Maustrompfad 21 with the thermal release 23 and the breaker and trip insert 24 virtually no electricity, since the Crowstrompfad 21 is short-circuited by the main current path 19.
  • the contact plate 15 is thereby pivoted against the force of the spring 38 about the pivotal axis formed by the mating contacts 17 ', 22, so that the contact plate 15 with its corresponding mating contact 18' from the contact 18 is lifted and the contact 18 is thus opened, while the first and third contacts 17, 22 remain closed.
  • a compression spring is shown as spring 38, which is further compressed by the pivotal movement of the contact plate 15, whereby the contact plate 15 is held with increased force with the contacts 17 and 22 in engagement.
  • the magnetic release 10 also generates a force which acts on the contact plate 15 from its striker 14 via the pivot lever 114 in the same direction as the force of the spring 38, but on the other side of the pivot axis.
  • the contact plate 15 is thereby pressed in the manner of a rocker with its mating contacts 17 ', 22' against the contacts 17, 22, so that when opening the second contact 18 opening of the first and third contact 17, 22 is reliably prevented because the at Opening the second contact 18 forces acting on the contact plate 15 from the same side and not act as previously from two sides on this.
  • the opposite effect of the closing and opening forces is achieved by the design of the contact plate 15 as a pivot plate or rocker.
  • the duration of the interruption of the main current path 19, ie the duration of the opening of the second contact 18 can be minimized by a suitable coordination of the forces of the spring 38 and the magnetic release 10 on the mass and structure of the contact plate 15.
  • the bimetallic element of the thermal release 23 in the direction of FIG. 6A Bent arrow A and occurs with a contact arm 143 on the pawl 41 into contact and pivots it clockwise about its axis of rotation 44 against the force of a pawl spring, not shown, so that the pawl 41 releases a retaining pin 45 on the contact plate carrier 36.
  • the switching spring 42 moves after the release of the retaining pin 45 of the contact plate carrier 36 this in his in FIG. 7A illustrated OFF position. At the same time pivots the switching spring 42 which is supported on a rotatably mounted shift lever 46 of the switch 33, the shift lever 46 in his in FIG. 7A shown, the OFF state of the circuit breaker indicating position.
  • the shift lever 46 is switched off from the in FIG. 7A shown position in the clockwise direction in the FIG. 5A or 6A moved back position shown, so by this movement, the pawl 41 from its in FIG. 7A OFF position shown again in the in FIG. 5A or 6A shown ON position, wherein it again comes into engagement with the pawl spring which pivots the pawl 41 in the counterclockwise direction so that it is brought or held with the retaining pin 45 on the contact plate carrier 36.
  • circuit breaker according to the invention has been switched to its OFF state due to an overcurrent by the thermal release 23, it can be switched on again immediately after the fault has been eliminated without further measures. Even in the event that the overcurrent only briefly applied to the circuit breaker, for example, has responded to a downstream circuit breaker and has turned off the troubled portion of the mains, the armature 12 falls back and the spring 38, the contact plate 15 back into the in FIG. 5A or 6A bring shown ON position.
  • the lever 148 which is pivotally mounted about a pivot axis 149, has a first lever arm 150, on which the striker pin 29 of the breaker and release insert 24 engages, and a second lever arm 151, on which an extension 152 is formed, which on the Contact arm 143 of the pawl 41 of the switching mechanism 30 acts to release the contact plate carrier 36, so that it can be brought by the switching spring 42 in the OFF position.
  • the contact plate 15 which is no longer from the magnetic release 10 in their in Figure 8A shown, falls back into its closed position, which would cause the short-circuit current would flow through the main current path 19 and that when opening the first and second contacts 17 and 18, an undesirable arc occurred
  • the second Hebelann 151 of the lever 148th and the extension 117 of the pivoting lever 114 is formed so that the second lever arm 151 engages with its free end 151 'on a side surface 117' of the extension 117, so that the one located in its release position Swing lever 114 is prevented from returning to its rest position as soon as the striker pin 14 of the magnetic release 10 no longer holds this in its opening or release position.
  • the second lifting arm 151 of the lever 148 pivoted by the striking pin 29 of the breaking and triggering insert 24 thus holds the pivot lever 114 and thus the contact plate 15 in the position in which the second contact 18 is opened and the main current path 19 is interrupted, so that both the main - Are reliably kept de-energized as well as Maustrompfad until the contact plate 15 and the contact plate carrier 36 carrying them from the switching spring 42 of the switching mechanism 30 in the in Figure 9A drawn OFF position was pulled.
  • the breaker and release insert 24 is suitably formed by a fuse link, the fuse wire and / or retaining wire in a manner not shown, the contact pin 29 against the force of a release spring in his in the Figures 5A . 5B and 6A holding position shown holds.
  • the striker pin 29 is abruptly moved by the release insert provided in the fuse insert into its release position, whereby it actuates the switching mechanism 30 via the lever 148 as described above.

Landscapes

  • Breakers (AREA)

Claims (15)

  1. Disjoncteur de protection comprenant deux trajets de courant menés parallèlement ayant chacun un point de contact (15, 18 ; 15, 22) qui, à titre de trajets de courant principal et secondaire (19, 21), sont branchés en série à une bobine (11) d'un déclencheur magnétique (10) via un moyen de mise en contact (15, 17, 18, 22), déclencheur dont l'induit (12) ouvre le point de contact (15, 18) du trajet de courant principal (19) en cas de perturbation, qui est formé exclusivement par le branchement en série du moyen de mise en contact (15, 17, 18) avec la bobine (11), caractérisé en ce que dans le trajet de courant secondaire (21) est prévu un insert d'interruption et de déclenchement (24) qui, en cas de court-circuit, interrompt le trajet de courant secondaire et déclenche une serrure de commutation (30) pour ouvrir et fixer le moyen de mise en contact (15, 17, 18, 22).
  2. Disjoncteur de protection selon la revendication 1, caractérisé en ce que l'insert d'interruption et de déclenchement (24) est agencé dans le trajet de courant secondaire (21) de façon interchangeable entre deux éléments de contact (25, 26), en particulier entre deux éléments de contact à borne.
  3. Disjoncteur de protection selon la revendication 1 ou 2, caractérisé en ce que l'insert d'interruption et de déclenchement (24) est un insert fusible dont le fil fusible retient un percuteur (29) dans sa position opérationnelle, à l'encontre de la force d'un ressort.
  4. Disjoncteur de protection selon la revendication 1, 2 ou 3, caractérisé en ce qu'un capot de boîtier (52) recouvrant l'insert d'interruption et de déclenchement (24) dans le trajet de courant secondaire (21) n'est amovible que dans l'état éteint du disjoncteur de protection, en particulier pour changer l'insert d'interruption et de déclenchement (24).
  5. Disjoncteur de protection selon l'une des revendications précédentes, caractérisé en ce que le moyen de mise en contact comprend une plaque de contact (15) susceptible de venir en engagement avec trois contacts (17, 18, 22) dont le premier contact (17) est connecté à une borne de raccordement (16), le second contact (18) est connecté à une autre borne de raccordement (20) et le troisième contact (22) est connecté à l'insert d'interruption et de déclenchement (24) dans le trajet de courant secondaire (21).
  6. Disjoncteur de protection selon la revendication 5, caractérisé en ce que le troisième contact (22) est connecté à l'insert d'interruption et de déclenchement (24) dans le trajet de courant secondaire (21) par un déclencheur thermique (23) qui est réalisé en particulier sous forme d'élément bimétallique, et/ou
    en ce que la plaque de contact (15) est agencée sur une tige (35) d'un support de plaque de contact (36) et est pressée par un ressort (38) contre les contacts (17, 18, 22) lorsque le support de plaque de contact (36) prend sa position ON.
  7. Disjoncteur de protection selon la revendication 6, caractérisé en ce que pour ouvrir le point de contact du trajet de courant principal (19) de l'induit (12) du déclencheur magnétique (10) à l'encontre de la force du ressort (38), la plaque de contact (15) peut être basculée autour d'un axe de basculement, formé par le premier et par le troisième contact (17, 22), en éloignement du second contact (18), et/ou
    en ce que la plaque de contact (15) peut être séparée des contacts (17, 18, 22) sous l'effet d'un ressort de commutation (42).
  8. Disjoncteur de protection selon la revendication 7, caractérisé en ce que pour ouvrir les points de contact, le support de plaque de contact (36) et ainsi également la plaque de contact (15) peuvent être déplacés de leur position fermée ou ON jusque dans leur position ouverte ou OFF par le ressort de commutation (42) attaquant le support de plaque de contact (36), et/ou en ce que
    le support de plaque de contact (36) peut être fixé dans sa position fermée ou ON par un cliquet (41) de la serrure de commutation (30).
  9. Disjoncteur de protection selon la revendication 8, caractérisé en ce qu'en cas de déclenchement, le déclencheur thermique (23) et le percuteur (29) de l'insert d'interruption et de déclenchement (24) agissent chacun sur le cliquet (41) de la serrure de commutation (30) pour désolidariser la fixation du support de plaque de contact (36) pour ouvrir les points de contact.
  10. Disjoncteur de protection selon l'une des revendications précédentes, caractérisé en ce que le moyen de mise en contact comprend une plaque de contact (15) qui peut être amenée en engagement avec trois contacts (17, 18, 22) qui forment un triangle et dont le premier contact (17) est connecté à la bobine (11) du déclencheur magnétique (10), le second contact (18) est connecté au trajet de courant principal (19), et le troisième contact (22) est connecté au trajet de courant secondaire (21), en ce que la plaque de contact (15) est pressée contre les contacts (17, 18, 22) par un ressort (38) qui attaque la plaque de contact (15) à l'intérieur du triangle formé par les contacts (17, 18, 22), et en ce qu'en cas de perturbation, l'induit (12) du déclencheur magnétique (10) exerce une force sur la plaque de contact (15) par un levier basculant (114), qui agit sur la plaque de contact (15) dans la même direction que la force du ressort (38) pour basculer la plaque de contact (15) autour d'un axe de basculement formé par le premier et par le troisième contact (17, 22) et pour ainsi soulever la plaque de contact (15) du second contact (18) pour ouvrir le point de contact du trajet de courant principal (19).
  11. Disjoncteur de protection selon la revendication 10, caractérisé en ce que la plaque de contact (15) présente un prolongement (15') qui s'étend en éloignement de l'axe de basculement formé par le premier et par le troisième contact (17, 22) et en éloignement de la zone de l'agencement triangulaire des contacts (17, 18, 22), prolongement sur lequel attaque le levier basculant (114), et/ou en ce que
    la plaque de contact (15) présente trois contacts complémentaires (17', 18', 22') par lesquels elle peut être amenée en engagement avec le premier, le second, le troisième contacts (17, 18, 22).
  12. Disjoncteur de protection selon la revendication 10 ou 11, caractérisé en ce que le levier basculant (114) est mobile en basculement autour d'un axe de basculement (114') qui s'étend sensiblement parallèlement à l'axe de basculement de la plaque de contact (15) formé par le premier et par le troisième contact (17, 22), et en ce qu'il comprend un premier bras de levier (115) sur lequel attaque le percuteur (14) du déclencheur magnétique (10), et un second bras de levier (116) par lequel le levier basculant (114) peut être amené en engagement avec le prolongement (15') de la plaque de contact (15) pour ouvrir le second contact (18, 18').
  13. Disjoncteur de protection selon l'une des revendications 10 à 12, caractérisé en ce que l'insert d'interruption et de déclenchement (24) comprend un percuteur (29) par lequel il agit sur la serrure de commutation (30) via un levier (148).
  14. Disjoncteur de protection selon la revendication 13, caractérisé en ce que le levier (148) comprend un premier bras de levier (150) sur lequel attaque le percuteur (29) de l'insert d'interruption et de déclenchement (24), et un second bras de levier (151) via lequel il agit sur le cliquet (41) de la serrure de commutation (30), un prolongement (152) étant réalisé sur le second bras de levier (151) qui agit sur le cliquet (41) de la serrure de commutation (30).
  15. Disjoncteur de protection selon la revendication 13 ou 14, caractérisé en ce que le levier (148) agissant sur la serrure de commutation (30) est agencé par rapport au levier basculant (114) agissant sur la plaque de contact (15) de manière à fixer le levier basculant (114) dans sa position de déclenchement lorsqu'il est basculé depuis sa position de repos jusque dans sa position de déclenchement, le second bras de levier (116) du levier basculant (114) comprenant un prolongement (117) qui s'étend en direction transversale à l'axe de basculement (114') en éloignement de celui-ci, et le second bras de levier (151) du levier (148) et le prolongement (117) du levier basculant (114) sont réalisés de telle sorte que le second bras de levier (151) attaque par son extrémité libre (151') le prolongement (117).
EP16701160.0A 2015-01-23 2016-01-21 Disjoncteur de protection Active EP3248204B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP15152338.8A EP3048629A1 (fr) 2015-01-23 2015-01-23 Disjoncteur de protection
PCT/EP2016/051233 WO2016116559A1 (fr) 2015-01-23 2016-01-21 Disjoncteur de protection de ligne

Publications (2)

Publication Number Publication Date
EP3248204A1 EP3248204A1 (fr) 2017-11-29
EP3248204B1 true EP3248204B1 (fr) 2018-11-07

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Application Number Title Priority Date Filing Date
EP15152338.8A Withdrawn EP3048629A1 (fr) 2015-01-23 2015-01-23 Disjoncteur de protection
EP16701160.0A Active EP3248204B1 (fr) 2015-01-23 2016-01-21 Disjoncteur de protection

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Application Number Title Priority Date Filing Date
EP15152338.8A Withdrawn EP3048629A1 (fr) 2015-01-23 2015-01-23 Disjoncteur de protection

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EP (2) EP3048629A1 (fr)
CN (1) CN107210168B (fr)
WO (1) WO2016116559A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3724909A1 (fr) 2017-12-15 2020-10-21 Jozef Smrkolj Disjoncteur de protection de puissance intelligent
DE102018115696A1 (de) 2018-06-28 2020-01-02 Strip's D.O.O. Mehrfachmessvorrichtung und Leitungsschutzschalter
EP3840008A1 (fr) 2019-12-16 2021-06-23 Strip's d.o.o. Dispositif de mesure multiple et disjoncteur de protection de circuit
EP4084326A4 (fr) 2020-12-31 2023-05-10 Huawei Digital Power Technologies Co., Ltd. Système de production d'énergie photovoltaïque, onduleur photovoltaïque et boîtier de combinateur à courant continu
CN113506713B (zh) * 2021-09-12 2021-12-21 江西韬瑞自动化设备有限公司 一种用于电路紧急保护的装置
WO2023208490A1 (fr) 2022-04-29 2023-11-02 Jozef Smrkolj Interrupteur à glissière, système d'interrupteur intelligent et disjoncteur intelligent permettant de rompre un circuit électrique

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US2939936A (en) * 1957-10-01 1960-06-07 Ite Circuit Breaker Ltd Separate housing for coordinated circuit breaker current limiting device
US3533038A (en) * 1967-06-22 1970-10-06 Ite Imperial Corp Non-interchangeable means for circuit breaker fuse connections
DE19836270B4 (de) * 1998-08-11 2010-11-25 Efen Gmbh Schutzeinrichtung gegen die thermische Überlastung einer Schaltanlage
CN2821850Y (zh) * 2005-09-19 2006-09-27 上海电器科学研究所（集团）有限公司 选择性保护开关
DE102006027140A1 (de) * 2006-06-12 2007-12-13 Ellenberger & Poensgen Gmbh Schutzschalter
DE102007039943A1 (de) * 2006-11-11 2008-05-29 Abb Ag Elektrischer Schalter
DE102008026813B4 (de) * 2008-06-05 2016-11-17 Hager Electro S.A.S. Elektrischer selektiver Selbstschalter
CN102243954A (zh) * 2010-05-12 2011-11-16 Abb股份公司 安装开关设备
WO2012128072A1 (fr) * 2011-03-22 2012-09-27 パナソニック株式会社 Dispositif de contact
DE102011016933A1 (de) 2011-04-13 2012-10-18 Jozef Smrkolj Kontakteinrichtung und deren Antrieb für Schutzschaltgeräte

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Also Published As

Publication number Publication date
EP3048629A1 (fr) 2016-07-27
WO2016116559A1 (fr) 2016-07-28
CN107210168B (zh) 2020-04-14
EP3248204A1 (fr) 2017-11-29
CN107210168A (zh) 2017-09-26

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