EP3048629A1 - Disjoncteur de protection - Google Patents

Disjoncteur de protection Download PDF

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Publication number
EP3048629A1
EP3048629A1 EP15152338.8A EP15152338A EP3048629A1 EP 3048629 A1 EP3048629 A1 EP 3048629A1 EP 15152338 A EP15152338 A EP 15152338A EP 3048629 A1 EP3048629 A1 EP 3048629A1
Authority
EP
European Patent Office
Prior art keywords
contact
circuit breaker
insert
contact plate
release
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.)
Withdrawn
Application number
EP15152338.8A
Other languages
German (de)
English (en)
Inventor
Jozef Smrkolj
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to EP15152338.8A priority Critical patent/EP3048629A1/fr
Priority to CN201680007015.8A priority patent/CN107210168B/zh
Priority to PCT/EP2016/051233 priority patent/WO2016116559A1/fr
Priority to EP16701160.0A priority patent/EP3248204B1/fr
Publication of EP3048629A1 publication Critical patent/EP3048629A1/fr
Withdrawn legal-status Critical Current

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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. At least the fuse in normal operation 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 invention has for its object to provide a further circuit breaker, which largely prevents the formation of an arc when interrupting the circuit in case of failure and thus a burning of contacts in normal energy consumption during continuous operation.
  • 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 arrangement of a breaker and tripping insert that even in the case of short circuit, the contact point of the main current path, the so-called Empty contact leads the operating current, is opened without interruption of the short-circuit current, in order to direct it to the secondary current path and thus through the breaker and trip insert. 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 Maustrompfad, 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 can only be removed when the circuit breaker is switched off, in particular for exchanging the breaker and tripping unit or the fuse.
  • 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 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 path can be interrupted 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 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 closing 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 circuit breaker according to the invention on a magnetic release 10 with a coil 11 and an armature 12 which acts via a striker pin 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 is directly connected to the third contact 22, 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 via the Maustrompfad with the thermal release 23 and the breaker and trip insert 24 virtually no power because the secondary current path 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 43 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. 4A 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. 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 of the switching 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 of the switching 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 tripping insert 24 After tripping of the miniature circuit breaker in the event of a short circuit, the breaker and tripping insert 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 cap (52) covering the breaker and tripping insert (24) can therefore only be removed when the circuit breaker is switched off.

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  • Breakers (AREA)
EP15152338.8A 2015-01-23 2015-01-23 Disjoncteur de protection Withdrawn EP3048629A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP15152338.8A EP3048629A1 (fr) 2015-01-23 2015-01-23 Disjoncteur de protection
CN201680007015.8A CN107210168B (zh) 2015-01-23 2016-01-21 线路保护开关
PCT/EP2016/051233 WO2016116559A1 (fr) 2015-01-23 2016-01-21 Disjoncteur de protection de ligne
EP16701160.0A EP3248204B1 (fr) 2015-01-23 2016-01-21 Disjoncteur de protection

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
EP3048629A1 true EP3048629A1 (fr) 2016-07-27

Family

ID=52391862

Family Applications (2)

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

Family Applications After (1)

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

Country Status (3)

Country Link
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
WO2019114983A1 (fr) 2017-12-15 2019-06-20 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
AU2020483594A1 (en) 2020-12-31 2022-09-01 Huawei Digital Power Technologies Co., Ltd. Photovoltaic power generation system, photovoltaic inverter and direct-current combiner box
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

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
DE102011016933A1 (de) 2011-04-13 2012-10-18 Jozef Smrkolj Kontakteinrichtung und deren Antrieb für Schutzschaltgeräte

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
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
KR20140005979A (ko) * 2011-03-22 2014-01-15 파나소닉 주식회사 접점 장치

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
DE102011016933A1 (de) 2011-04-13 2012-10-18 Jozef Smrkolj Kontakteinrichtung und deren Antrieb für Schutzschaltgeräte

Also Published As

Publication number Publication date
CN107210168A (zh) 2017-09-26
WO2016116559A1 (fr) 2016-07-28
CN107210168B (zh) 2020-04-14
EP3248204B1 (fr) 2018-11-07
EP3248204A1 (fr) 2017-11-29

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