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WO2016116559A1 - Disjoncteur de protection de ligne - Google Patents

Disjoncteur de protection de ligne Download PDF

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Publication number
WO2016116559A1
WO2016116559A1 PCT/EP2016/051233 EP2016051233W WO2016116559A1 WO 2016116559 A1 WO2016116559 A1 WO 2016116559A1 EP 2016051233 W EP2016051233 W EP 2016051233W WO 2016116559 A1 WO2016116559 A1 WO 2016116559A1
Authority
WO
WIPO (PCT)
Prior art keywords
contact
circuit breaker
contact plate
release
lever
Prior art date
Application number
PCT/EP2016/051233
Other languages
German (de)
English (en)
Inventor
Jozef Smrkolj
Original Assignee
Jozef Smrkolj
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Jozef Smrkolj filed Critical Jozef Smrkolj
Priority to CN201680007015.8A priority Critical patent/CN107210168B/zh
Priority to EP16701160.0A priority patent/EP3248204B1/fr
Publication of WO2016116559A1 publication Critical patent/WO2016116559A1/fr

Links

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 line 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.
  • a circuit breaker is already known, in which the armature of a magnetic release in case of failure via a plunger or striker opens the contact point of the main current path, so that the current flows now only on the secondary flow path and its contact point.
  • the opening of the contact point in the main current path takes place without the formation of an arc, since the contact point is short-circuited by the secondary circuit.
  • the contact point of the secondary current path which is formed as Abbrennitch abruptly opened by the plunger or striker, which is for this purpose driven by a second anchor.
  • the arc occurring at the opening of the contact point is brought to extinction in a known manner in one of the contact point associated Deionhunt. Since the burn-off contact and a thermal tripping device for the overcurrent accident are located in the secondary current path through which no current flows in a fault-free case, the energy losses in the circuit breaker can be minimized during normal continuous operation. Due to the burnup at the burn-off contact, however, the tripping characteristic in the event of an overcurrent accident can change.
  • 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.
  • connection devices For connection to the mains, domestic connection fuses whose size is prescribed by the grid operator are prescribed as connection devices in buildings in accordance with TAB Technical regulations.
  • Such an overcurrent protection device conventionally has a selective circuit breaker, as described, for example, in DE 10 2011 016 933 A1, and a fuse arranged in the same line in accordance with the instructions. This results in the generation of heat in the overcurrent protection devices, connection devices and circuit distributors, which causes temperature increases, which in the case of the Concepti must be taken into account on the overcurrent protection devices in order to avoid malfunctions due to the mutual influence of the protective switching devices in the system.
  • the invention has for its object to provide a circuit breaker that largely prevents the formation of an arc when interrupting the circuit in case of malfunction and thus burning off of contacts in normal continuous operation energy losses.
  • a breaker and trip insert in the secondary current path the Subcircuit interrupts and triggers a switching mechanism for opening and fixing the open contact device. According to the invention, therefore, 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 trip application 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 in the secondary trumpet is interchangeably arranged 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 danger of the creation of an arc.
  • the prescribed fuse as a fuse in the bypass path, in which preferably also serving as overcurrent thermal trip, it is possible to completely avoid the power losses of the overcurrent trip and the fuse in normal operation, as the over-current release and the fuse is only flowed through in case of failure of electricity to protect electrical lines, 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.
  • the triangular contact plate makes it possible to produce the miniature circuit breaker strand-free with only a few parts and thus cost-effectively.
  • 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 occupies 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 paths can break reliably 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 from the contacts under the action of a switching spring, wherein the Kon- "
  • 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 thus the contact plate for opening the contact point of the main current path from the second contact to lift.
  • the striker of the magnetic release which interrupts the main current path in the event of overcurrent and short-circuit, so according to the invention indirectly via a pivot lever 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, such as the spring for closing the contacts.
  • the force is applied to two sides of a pivot axis about which the contact plate is pivotable like a rocker.
  • 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. This further optimizes the opening behavior.
  • the breaker and release insert has a striking pin, with which it acts on the switching lock via a lever, wherein the lever acts on a first lever arm, on which the firing pin of the triggering insert engages, and a second lever Having lever arm, via which it acts on the pawl of the switching mechanism.
  • the lever acting on the switch lock is arranged relative to the pivot lever acting on the contact plate such that it engages the pivot lever in its release position. xiert, 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 the second lever arm engages with its free end on the extension.
  • FIG. 1A shows a schematic sectional view of a circuit breaker according to a first embodiment of the present invention in the on state
  • Figure 1B shows the circuit diagram of the circuit breaker of Figure 1A, wherein the power supply is highlighted in bold in the on state
  • FIG. 2A shows the circuit breaker according to the invention in the case of overcurrent
  • FIG. 2B shows the circuit diagram of the circuit breaker, the current control being highlighted in bold in the case of overcurrent
  • FIG. 3 shows the circuit breaker in the event of a short circuit
  • 4A shows the circuit breaker according to the present invention in the off state
  • FIG. 4B shows the circuit diagram of the switched off circuit breaker
  • 5A is a schematic sectional view of a circuit breaker according to another embodiment of the invention in the on state
  • Figure 5B is a schematic enlarged sectional view of the triggering mechanism of the circuit breaker of Figure 5A
  • FIG. 5C shows the circuit diagram of the circuit breaker according to FIG. 5A, with the current control being highlighted in the switched-on state
  • FIG. 6A shows the circuit breaker according to the invention in the event of overcurrent
  • FIG. 6B shows the circuit diagram of the circuit breaker according to the invention in the case of overcurrent
  • FIG. 7A shows the circuit breaker according to the invention in the switched-off state after overcurrent
  • FIG. 8A shows the circuit breaker according to the invention when a short circuit occurs
  • FIG. 8B shows the circuit diagram of the circuit breaker according to the invention in the event of a short circuit
  • Figure 9A shows the circuit breaker according to the present invention in the off state after short circuit
  • FIG. 9B shows the circuit diagram of the circuit breaker according to the invention which is switched off after a short circuit.
  • corresponding components are provided with the same reference numerals.
  • the Lei protection switch according to a first embodiment of the invention, a magnetic release 10 with a coil 11 and an armature 12 which acts on a contact pin 15 via a striker pin 14.
  • 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 by the series connection of the coil 11, the first contact 17, the contact plate 15, the second contact 18 vind 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 which is concealed in FIG. 1A as well as in the other sectional views of the circuit breaker by the first contact 17, also cooperates with the contact plate 15.
  • 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 release insert 24 is replaceably inserted between two non-switching contact elements 25, 26, which may be formed as terminal contacts, of which the first contact element 25 via a line element 27 with the thermal release 23 and the second contact element 26 via a 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 Figure 1B.
  • 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 when 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 region between the legs of the V and is, as can be seen particularly well in Figure 4A, mounted on a shaft 35 of a contact plate carrier 36 extending through the passage opening or the passage area of the contact plate 15 extends 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 on a shoulder 39 of the contact plate carrier 36 and with its other end on the contact plate 15 to these as shown in Figure 1 A, with the first to third contacts 17, 18, 22 or as shown in Figure 4A, with a retaining shoulder 40 on the shaft 35 of the contact plate carrier 36 to engage.
  • the contact plate carrier 36 is held by a pawl 41 against the force of a switching spring 42 in its ⁇ 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 to hold the circuit breaker in its EI 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 shown in FIG. 2A and shown in FIG. 2B 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 bimetal element of the thermal release 23 is bent in the direction of the arrow A shown in FIG.
  • the switching lever 46 is moved back from the position shown in FIG. 4A in a clockwise direction into the position shown in FIG Moving the pawl 41 from its OFF position shown in Figure 4A back into the ON position shown in Figure 1A, where it again comes into engagement with the pawl spring, the pawl 41 thereby pivots counterclockwise so that they with the Retaining pin 45 is brought or held on the contact plate carrier 36.
  • 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, since, for example, a downstream circuit breaker has responded and has turned off the faulty area of the power grid, the armature 12 falls back and the spring 38, the contact plate back into the illustrated in Figure 1 A Bring 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 they the holding pin 45 of the contact plate carrier 36th releases, whereupon the contact plate carrier 36 as in the case of an overcurrent is pulled by the switching spring 42 in its OFF position shown in Figure 4A.
  • 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 they the holding pin 45 of the contact plate carrier 36th releases, whereupon the contact plate carrier 36 as in the case of an overcurrent is pulled by the switching spring 42 in its OFF position shown in Figure 4A.
  • 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 expediently formed by a fuse link whose fuse wire and / or retaining wire holds the contact pin 29 against the force of a release spring in its ready position shown in FIGS. 1A, 2A and 4A in a manner not shown.
  • the percussion pin 29 is abruptly moved into its release position by the release spring provided in the fusible insert, whereby it actuates the interlock 30 as described above.
  • a removable cap 52 or the like provided on the housing 37 of the circuit breaker.
  • 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 with its operating portion secures the cap 52 against being removed in the switched-on state, the circuit breaker must be switched off before replacing the interruption and release 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 operated. 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 magnetic release 10 with a coil 11 and an armature 12, via a striker 14 and a pivot lever 114, which will be described in more detail below, on a Contact plate 15 acts.
  • 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 a mating contact 17 '(see FIG. 5B) to the first contact 17, to a second contact 18 which is connected via an electrical line element which forms a main current path 19 another terminal 20 is connected.
  • 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 used interchangeably 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) connected to the other terminal 20 is.
  • the breaker and release insert 24 has a striking pin 29, with which it acts via a lever 148 on a switching mechanism 30, as indicated by the dashed line 31 in Figure 5C.
  • 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 on a contact plate carrier 36, which in turn is displaceably 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 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 shown in Figure 5A, with the first to third Contacts 17, 18, 22 or as shown for example in Figure 7A, with a retaining shoulder 40 on the contact plate carrier 36 in engagement.
  • the contact plate 15 has (see Figure 5B) has three mating contacts 17 ', 18' and 22 '(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 the first to third contacts 17, 18 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 an extension 15 'extending from one of the first and third contacts 17, 22 and the extension 15' extending from the region 15 "of the triangle arrangement of the mating contacts 17 ', 18', 22 '(see FIG. 5B).
  • 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 around their from the first and the third counter-contact 17 ', 22nd 'pivot axis formed pivot.
  • 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 ⁇ position in which the contact plate 15 is lifted from the retaining shoulder 40 and under the pressure of Spring 38 rests on the contacts 17, 18, 22 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 trip 23 and the breaker and trip insert 24 virtually no power because the Volunteerstrompfad 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 with increased force with the contacts 17 and 22 is held 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 overcurrent heats the bimetallic element, but does not cause the breaker and trip insert 24 to respond. Since the overcurrent when opening the second contact 18, ie at Interrupting the main flow path 19 is not interrupted, but is directed to the Maus- trompfad 21, occurs when opening the second contact 18 no arc.
  • the bimetallic element of the thermal release 23 is bent in the direction of the arrow A shown in FIG. 6A and comes into contact with a contact arm 143 on the pawl 41 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 shown in Figure 7A exhibition.
  • pivoted the switching spring 42 which is supported on a rotatably mounted shift lever 46 of the switch 33, the shift lever 46 in its illustrated in Figure 7A, the OFF state of the circuit breaker indicating position.
  • the shift lever 46 is moved backwards from the position shown in FIG. 7A in the position shown in FIG. 5A or 6A, as a result of this movement also moves the pawl 41 from its exhibition shown in Figure 7A back into the ON position shown in Figure 5A or 6A, where it again comes into engagement with the pawl spring which pivots the pawl 41 in the counterclockwise direction so that it with the retaining pin 45 is brought or held on the contact plate carrier 36.
  • the circuit breaker according to the invention can be switched on 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 again in the in Figure 5A or 6A shown bring ON position. However, if a short circuit occurs, then, as in the case of an overcurrent, the magnetic release 10 initially acts and interrupts the main current path 19, as shown in FIG. 8B by the dashed line of action 43, so that the short-circuit current flows only via the secondary current path 21. Unlike the overcurrent, however, the breaker and tripping insert 24, which practically interrupts the secondary current path 21 at the same time and, by means of its striking pin 29, pivots the lever 148 in a clockwise direction, as shown in FIG. 8A.
  • 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 second lifting arm 151 of the lever 148 pivoted by the striking pin 29 of the breaker and release 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 and the secondary current path are kept reliably de-energized until the contact plate 15 and the contact plate carrier 36 carrying it have been pulled by the switching spring 42 of the switching mechanism 30 into the OFF position shown in FIG. 9A.
  • the breaker and release insert 24 is expediently formed by a fuse link, the fuse wire and / or retaining wire holds the contact pin 29 against the force of a release spring in its standby position shown in Figures 5A, 5B and 6A in a manner not shown.
  • 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)

Abstract

L'invention concerne un disjoncteur de protection de ligne comprenant deux trajets de courant guidés parallèlement présentant chacun un point de contact (15, 18; 15, 22), qui sont montés en série, en tant que trajet de courant principal et trajet de courant secondaire (19, 21), par l'intermédiaire d'un dispositif de contact (15, 17, 18, 22), avec une bobine (11) d'un déclencheur magnétique (10), dont l'induit (12), en cas de panne, ouvre le point de contact (15, 18) du trajet de courant principal (19), qui n'est formé que par le montage en série du dispositif de contact (15, 17, 18) avec la bobine (11). L'invention vise à fournir un autre disjoncteur de protection de ligne, qui, tout en ayant des pertes d'énergie réduites au minimum pendant un fonctionnement permanent normal, empêche la formation d'un arc électrique lorsque le circuit est coupé en cas de panne, et empêche donc également en grande partie une combustion des contacts. À cet effet, l'invention prévoit pour un disjoncteur de protection de ligne que le fait qu'un insert de coupure et de déclenchement (24), qui coupe le trajet de courant secondaire en cas de court-circuit et déclenche un mécanisme de verrouillage (30) pour l'ouverture et la fixation du dispositif de contact (15, 17, 18, 22), est disposé dans le trajet de courant secondaire (21).
PCT/EP2016/051233 2015-01-23 2016-01-21 Disjoncteur de protection de ligne WO2016116559A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201680007015.8A CN107210168B (zh) 2015-01-23 2016-01-21 线路保护开关
EP16701160.0A EP3248204B1 (fr) 2015-01-23 2016-01-21 Disjoncteur de protection

Applications Claiming Priority (2)

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

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WO2016116559A1 true WO2016116559A1 (fr) 2016-07-28

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

Cited By (3)

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WO2019114983A1 (fr) 2017-12-15 2019-06-20 Jozef Smrkolj Disjoncteur de protection de puissance intelligent
EP3588103A1 (fr) 2018-06-28 2020-01-01 Strip's d.o.o. Dispositif de mesure multiple et disjoncteur de protection de circuit
EP3840008A1 (fr) 2019-12-16 2021-06-23 Strip's d.o.o. Dispositif de mesure multiple et disjoncteur de protection de circuit

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CN112435901A (zh) * 2020-12-16 2021-03-02 浙江新控电气科技有限公司 控制与保护开关电器
CN116316417A (zh) 2020-12-31 2023-06-23 华为数字能源技术有限公司 一种光伏逆变器及关断保护方法
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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US3533038A (en) * 1967-06-22 1970-10-06 Ite Imperial Corp Non-interchangeable means for circuit breaker fuse connections
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DE102011016933A1 (de) 2011-04-13 2012-10-18 Jozef Smrkolj Kontakteinrichtung und deren Antrieb für Schutzschaltgeräte
EP2690642A1 (fr) * 2011-03-22 2014-01-29 Panasonic Corporation Dispositif de contact

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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
DE102008026813B4 (de) * 2008-06-05 2016-11-17 Hager Electro S.A.S. Elektrischer selektiver Selbstschalter
CN201918333U (zh) * 2010-05-12 2011-08-03 Abb股份公司 安装开关设备

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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
DE102007039943A1 (de) * 2006-11-11 2008-05-29 Abb Ag Elektrischer Schalter
EP2690642A1 (fr) * 2011-03-22 2014-01-29 Panasonic Corporation Dispositif de contact
DE102011016933A1 (de) 2011-04-13 2012-10-18 Jozef Smrkolj Kontakteinrichtung und deren Antrieb für Schutzschaltgeräte

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019114983A1 (fr) 2017-12-15 2019-06-20 Jozef Smrkolj Disjoncteur de protection de puissance intelligent
EP3588103A1 (fr) 2018-06-28 2020-01-01 Strip's d.o.o. Dispositif de mesure multiple et disjoncteur de protection de circuit
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

Also Published As

Publication number Publication date
CN107210168B (zh) 2020-04-14
EP3248204A1 (fr) 2017-11-29
EP3048629A1 (fr) 2016-07-27
EP3248204B1 (fr) 2018-11-07
CN107210168A (zh) 2017-09-26

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