EP0008989B1 - Disjoncteur électrique basse tension à blocs auxiliaires de commande - Google Patents

Disjoncteur électrique basse tension à blocs auxiliaires de commande Download PDF

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Publication number
EP0008989B1
EP0008989B1 EP19790400625 EP79400625A EP0008989B1 EP 0008989 B1 EP0008989 B1 EP 0008989B1 EP 19790400625 EP19790400625 EP 19790400625 EP 79400625 A EP79400625 A EP 79400625A EP 0008989 B1 EP0008989 B1 EP 0008989B1
Authority
EP
European Patent Office
Prior art keywords
chamber
contacts
arc
pole
circuit breaker
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.)
Expired
Application number
EP19790400625
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0008989A1 (fr
Inventor
Bernard Henry
Bernard Olivier
Lucien Vernier
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.)
Merlin Gerin SA
Original Assignee
Merlin Gerin SA
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 Merlin Gerin SA filed Critical Merlin Gerin SA
Publication of EP0008989A1 publication Critical patent/EP0008989A1/fr
Application granted granted Critical
Publication of EP0008989B1 publication Critical patent/EP0008989B1/fr
Expired 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
    • H01H71/10—Operating or release mechanisms
    • H01H71/50—Manual reset mechanisms which may be also used for manual release
    • H01H71/52—Manual reset mechanisms which may be also used for manual release actuated by lever
    • H01H71/522—Manual reset mechanisms which may be also used for manual release actuated by lever comprising a cradle-mechanism
    • H01H71/525—Manual reset mechanisms which may be also used for manual release actuated by lever comprising a cradle-mechanism comprising a toggle between cradle and contact arm and mechanism spring acting between handle and toggle knee
    • 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
    • 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
    • H01H71/121—Protection of release mechanisms
    • 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
    • H01H71/501—Means for breaking welded contacts; Indicating contact welding or other malfunction of the circuit breaker
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
    • H01H83/20—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess current as well as by some other abnormal electrical condition
    • 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
    • H01H71/501—Means for breaking welded contacts; Indicating contact welding or other malfunction of the circuit breaker
    • H01H2071/502—Means for breaking welded contacts; Indicating contact welding or other malfunction of the circuit breaker with direct contact between manual operator and welded contact structure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H89/00—Combinations of two or more different basic types of electric switches, relays, selectors and emergency protective devices, not covered by any single one of the other main groups of this subclass
    • H01H2089/005—Multi-purpose combinations, e.g. LS/DI, LS/FI, of normal protective circuit breakers with known other forms of protection, e.g. earthfaults, differential, unbalance

Definitions

  • Circuit breakers of the kind mentioned are known (US Patent 3,143,627 and Patent FR 2,350,680), but these circuit breakers are not designed to receive auxiliary control, protection and / or signaling elements, only the extinguishing chamber arc being housed in a compartment isolated from other elements.
  • the object of the present invention is to remedy this drawback and to allow the realization of a circuit breaker with quick and easy access to the auxiliaries with isolation of these auxiliaries from the rest of the electrical part in order to allow their insertion or modification, after assembly, even under tension, while preserving a compact size.
  • the bar of the actuating mechanism preferably extends transversely in the upper compartment and the movable contact arm of each pole passes through a communication opening made in the intermediate central partition.
  • each pole comprises an arc switching horn perpendicular to the base plate and disposed at the in the vicinity of the fixed contact in order to constitute both a switching and shunting horn for the trip device, an end plate of the arc extinguishing chamber and a shielding member between said chamber and the adjacent trip device of the same pole.
  • the circuit breaker is equipped with a device for blocking the handle in the event of soldering of the contacts, to ensure the isolation function.
  • a low-voltage three-pole circuit breaker is housed in a parallel housing 10 lepiped molded in plastic material, comprising a base plate 12 or base, an intermediate casing 14, with open bottoms bearing on the plate 12, and a cover 16 for closing the casing 14.
  • An opening 18 is formed in the upper face of the cover 16 to allow the passage of a pivoting lever 20 associated with the control mechanism 22, common to the three poles.
  • the intermediate casing 14 has two longitudinal walls 24, 26 extending in the direction of movement of the lever 20, and two transverse walls 28, 30 each provided with a flange 32, 34 for positioning the connection terminals 36R, 36S, 36T; 38R, 38S, 38T on the input 40 and output 42 ranges of the three poles R, S, T of the circuit breaker.
  • a middle partition 44 made of an insulating material of the casing 14, extends parallel to the base plate 12 and divides the internal space of the housing 10 into two superimposed compartments isolated from one another, an upper compartment 46 closed by the cover 16 and a lower compartment 48 closed by the base plate 12.
  • the cover 16, the casing 14 and the base 12 are fixed to each other by assembly means (not shown).
  • the upper compartment 46 serves as a housing for the control mechanism 22 which occupies the space above the central pole S, and for various auxiliary blocks arranged laterally on either side of the mechanism 22, above the R and T poles
  • the auxiliaries can be an undervoltage relay or trip device 50 cooperating with an auxiliary trip lever 52, an auxiliary contact device 54 controlled by a finger 53 integral with the mechanism 22 or any other device, such as a coil remote control remote release, signaling or differential protection (fig. 3).
  • the control mechanism 22 is interposed between two fixed metal plates 58, 60 spaced apart by a transverse interval "e" and electrically isolated from the breaking chambers of the lower compartment by the middle partition 44.
  • the mechanism 22 controls a bar 56 made of insulating material common to the three poles and rotatably mounted on an axis 62 extending transversely in the upper compartment 46 crossing the plates 58, 60 perpendicularly.
  • the auxiliaries 50, 54 are housed in the volumes 64 and 66, delimited on either side of the central mechanism 22 longitudinally by the walls 24, 26 and the plates 58, 60, laterally by the transverse wall 30 and the bar 56 insulating below by the middle partition 44 and in above by the cover 16.
  • Each of the auxiliary blocks is equipped with an integrated terminal block suitable for rapid wiring, and is easily accessible from the front face in the disassembled position of the cover 16.
  • the lower compartment 48 contains the cut-off elements and the triggering devices with thermal and electromagnetic elements, associated with the three poles R, S, T.
  • Two partition walls 68, 70 made of insulating material, extend parallel to the direction of movement of the handle 22 and perpendicularly to the central partition 44 of the casing 14, so as to subdivide the lower compartment 48 into three housings 72R, 72S, 72T equal.
  • Three openings 74 for communication of the lower 48 and upper 46 compartments are formed in the middle partition 44 in the vicinity of the transverse wall 28 for the passage of the three contact arms 76 staggered regularly on the bar 56.
  • An additional window 78 is drilled in the partition 44 opposite the opening 74 of the central pole S and in the vicinity of the transverse wall 30 for the passage of a locking member 80 controlled by a trigger bar 67 and cooperating with a latch 82 of the trigger hook 84 integral with the mechanism 22.
  • the trigger bar 67 of insulating material is mounted with limited rotation on a transverse axis 86 parallel to the bar 56 and is arranged in the lower compartment 48 under the window 78.
  • the three poles R, S, T have identical structures arranged in the housings 72R, 72S, 72T, and the same references will be used subsequently to designate identical parts.
  • Each pole has a fixed contact 88 cooperating in the closed position of the circuit breaker with a movable contact 90 carried by the associated contact arm 76, the opposite end of which is integral with the bar 56.
  • the contact arm 76 is electrically connected to the track 40 corresponding by a braid 92 for connection, and the fixed contact 88 is connected to the bimetallic strip 94 of the trip device by a conductor 96 curved with current supply, subject to the central partition 44 by a fixing screw 98.
  • a flexible conductor 99 ensures the electrical connection of the bimetallic strip to the pad 42.
  • An arc extinguishing chamber 100 associated with the pair of contacts 88, 90 of each pole is provided with a stack of metal deionization sheets 102, perpendicular to the base plate 12, and provided with V-shaped notches directed towards the corresponding opening 74 of the partition 44.
  • a circuit derived from the shunt of the bimetal strip of each pole R, S, T comprises a switching horn 104 perpendicular to the base plate 12 and having a boss 106 near the fixed contact 88 to pick up from the start of the contact opening stroke the arcing roots having arisen on the fixed contact 88.
  • the metal horn 104 is separated from the current supply conductor 96 to the fixed contact 88 by a shim 108 made of insulating material, and is in electrical connection with the pad 42 by a switching wire 110 capable of shunting the biame-94 during the 'time interval between tripping and final opening of the circuit breaker.
  • the horn 104 is also equipped with two parallel cheeks 112, 114 for guiding the arc, spaced from one another by a transverse gap 116 for housing the fixed contact 88.
  • the cheeks 112, 114 metallic elements are an integral part of the horn 104 by bending at an angle of two end wings and are each capped by a cap (not shown) made of insulating material, in particular based on polyamide, accelerating the expansion of the arc towards the deionization plates 102.
  • the control mechanism 22 (fig. 5 to 9), housed in the upper compartment 46, cooperates with the central pole S, the movement being transmitted to the poles R, T, adjacent by the transverse bar 56 arranged above the openings 74 of the partition 44. It comprises a toggle pin 136 on which are articulated two links 138, 140, one of which 138 has its opposite end secured to the bar 56 by a connecting pin 142 and the other 140 of which is articulated on the trigger hook 84 at a point 144.
  • a tension spring 146 is anchored to the axis 136 of the toggle joint, and by its end opposite to the support 148 of the lever 20, the support 148 being articulated on a fixed pivot 150 forming the point of rotation of the lever 20.
  • the U-shaped trigger hook 84 is pivotally mounted on a fixed axis 152 and has a hooking spout 154 cooperating in the armed position with the lock 82 piloted by the locking member 80.
  • the lock 82 is rotatably mounted on an axis 156, and a return spring 158 threaded on the axis 156 biases the locking member 80 in the locked position.
  • the latter pivots around the axis 152 under the action of spring 146 by moving the articulation point 144 of the rod 140 upwards causing the pivoting in the direction of arrow f 2 of the contact arms 76 and of the bar 56.
  • the lever 20 is located then in the stable triggering position D situated halfway between the positions F and O.
  • the control mechanism 22 is also equipped with a blocking device 160 capable of stopping the movement of the lever 20 in the opening direction in an intermediate position S when the contacts 90, 88 are welded.
  • the blocking device 160 (see fig. to through 9) has a slot 162 formed in the support 148 of the lever 20 and having a tooth 164 projecting from the internal edge of the slot 162.
  • the connecting axis 142 of the link 138 is engaged in the light 162 and the assembly is arranged to allow relative movement of axis 142, light 162, free during manual control by the lever 20 or during automatic tripping of the circuit breaker causing the normal opening of the contacts 90, 88 ( fig. 8).
  • the connecting axis 142 remains stationary and the tooth 164 abuts against the axis 142 preventing the movement of the handle 20 to the position 0.
  • the handle 20 is then locked in the position S (fig. 9) and automatically returns to position F in the event of release.
  • Three removable protective screens 168 protect the transverse wall 28 of the upper compartment 46 after assembly of the members of the circuit breaker, and are held in place by fitting the cover 16.
  • Each screen 168 covers the contact arm 76 of the corresponding pole, and its braid 92 for connection to the pad 40, ensuring good isolation and personal safety.

Landscapes

  • Breakers (AREA)
EP19790400625 1978-09-12 1979-09-07 Disjoncteur électrique basse tension à blocs auxiliaires de commande Expired EP0008989B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7826381A FR2436491A1 (fr) 1978-09-12 1978-09-12 Disjoncteur electrique multipolaire basse tension a blocs auxiliaires de commande
FR7826381 1978-09-12

Publications (2)

Publication Number Publication Date
EP0008989A1 EP0008989A1 (fr) 1980-03-19
EP0008989B1 true EP0008989B1 (fr) 1983-10-05

Family

ID=9212633

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19790400625 Expired EP0008989B1 (fr) 1978-09-12 1979-09-07 Disjoncteur électrique basse tension à blocs auxiliaires de commande

Country Status (4)

Country Link
EP (1) EP0008989B1 (zh)
DE (1) DE2966262D1 (zh)
FR (1) FR2436491A1 (zh)
YU (1) YU40377B (zh)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2528230A1 (fr) * 1982-06-07 1983-12-09 Merlin Gerin Circuit shunt du declencheur d'un disjoncteur electrique
FR2569901B1 (fr) * 1984-09-06 1986-12-26 Hager Electro Perfectionnements apportes aux interrupteurs a coupure automatique, notamment aux interrupteurs differentiels et disjoncteurs
FR2595163B1 (fr) * 1986-02-28 1994-04-15 Merlin Et Gerin Disjoncteur electrique a protection amelioree
DE3766982D1 (de) * 1986-02-28 1991-02-07 Merlin Gerin Stromunterbrechungsapparat mit statischem schalter und schutzlastschalter.
FR2595164B1 (fr) * 1986-02-28 1994-04-15 Merlin Et Gerin Appareil de coupure de courant a commutateur statique et disjoncteur de protection integre
FR2649826B1 (fr) * 1989-07-11 1995-11-24 Merlin Gerin Mecanisme de commande pour disjoncteur electrique
FR2654254B1 (fr) * 1989-11-06 1995-11-24 Merlin Gerin Dispositif de telecommande pour disjoncteur electrique.
FR2666168B1 (fr) * 1990-08-23 1992-10-30 Merlin Gerin Mecanisme de commande a dispositif de sectionnement pour disjoncteur electrique.
US6031438A (en) * 1998-10-16 2000-02-29 Airpax Corporation, Llc Mid trip stop for circuit breaker
US8901446B2 (en) 2011-02-08 2014-12-02 Siemens Aktiengesellschaft Limit stop apparatus, circuit breakers including limit stops, and methods of using same
MX2013009104A (es) * 2011-02-08 2013-11-01 Siemens Ag Aparato de final de carrera, interruptores que incluyen finales de carrera, y metodos de uso de los mismos.
CN103443893B (zh) * 2011-02-08 2016-12-14 西门子公司 限动器设备、包括限动器的断路器及其使用方法
KR101748728B1 (ko) * 2015-12-28 2017-07-03 엘에스산전 주식회사 다극 배선용 차단기
KR101749981B1 (ko) * 2016-02-12 2017-06-22 엘에스산전 주식회사 다극 배선용 차단기
JP6832814B2 (ja) * 2017-09-01 2021-02-24 三菱電機株式会社 回路遮断器

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE723959C (de) * 1937-07-21 1942-08-14 Berker Geb Selbstschalter
DE1022298B (de) * 1956-09-07 1958-01-09 Siemens Ag Aus Baugruppen zusammensetzbarer Selbstschalter
US2956135A (en) * 1957-01-18 1960-10-11 Clark Controller Co Hand operated switch
US3143627A (en) * 1960-04-15 1964-08-04 Gen Electric Multipole circuit breaker with three part insulating casing
DE1161351B (de) * 1962-03-15 1964-01-16 Emil Quermann Elektro Schaltge Ein- oder mehrpoliger Selbstschalter
BE625978A (fr) * 1962-12-12 1963-06-12 Acec Disjoncteur à basse tension
BE772520A (fr) * 1971-09-13 1972-01-17 Vynckier Belg Werkhuizen Stroomonderbrekingselement.
FR224860A (zh) * 1973-04-05
FR2262859B1 (zh) * 1974-03-01 1977-09-23 Merlin Gerin
FR2350680A1 (fr) * 1976-05-04 1977-12-02 Merlin Gerin Disjoncteur electrique basse tension a platine de support

Also Published As

Publication number Publication date
FR2436491A1 (fr) 1980-04-11
EP0008989A1 (fr) 1980-03-19
DE2966262D1 (en) 1983-11-10
FR2436491B1 (zh) 1981-02-13
YU218979A (en) 1982-06-30
YU40377B (en) 1985-12-31

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