EP0236202B1 - Appareil de coupure de courant à commutateur statique et disjoncteur de protection - Google Patents

Appareil de coupure de courant à commutateur statique et disjoncteur de protection Download PDF

Info

Publication number
EP0236202B1
EP0236202B1 EP87400333A EP87400333A EP0236202B1 EP 0236202 B1 EP0236202 B1 EP 0236202B1 EP 87400333 A EP87400333 A EP 87400333A EP 87400333 A EP87400333 A EP 87400333A EP 0236202 B1 EP0236202 B1 EP 0236202B1
Authority
EP
European Patent Office
Prior art keywords
contacts
housing
breaking device
solid
state switch
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 - Lifetime
Application number
EP87400333A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0236202A1 (fr
Inventor
Jean-Luc Mertz
Michel Lazareth
Hubert Guerin
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
Priority claimed from FR8602968A external-priority patent/FR2595163B1/fr
Priority claimed from FR8602967A external-priority patent/FR2595164B1/fr
Application filed by Merlin Gerin SA filed Critical Merlin Gerin SA
Priority to AT87400333T priority Critical patent/ATE59497T1/de
Publication of EP0236202A1 publication Critical patent/EP0236202A1/fr
Application granted granted Critical
Publication of EP0236202B1 publication Critical patent/EP0236202B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/123—Automatic release mechanisms with or without manual release using a solid-state trip unit
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/54—Circuit arrangements not adapted to a particular application of the switching device and for which no provision exists elsewhere
    • H01H9/548—Electromechanical and static switch connected in series

Definitions

  • the invention relates to a low-voltage current cut-off device with modular housing having a front face, two large parallel side faces, and two small side faces, each having a recess for housing a pair of power terminals and at least one control terminal, said recesses being arranged opposite the front face towards the rear part of the housing, in which housing are housed and connected in series with a static switch and a pair of separable contacts actuated by a mechanism having a control handle, disposed on said front face and a trigger causing the separation of the contacts during a fault by protecting the static switch.
  • An apparatus of the type mentioned, for example described in document EP-A-0104981 allows a circuit to be opened and closed by the control of a static switch, possibly remote-controlled.
  • the separable contacts open automatically, protecting the static switch and interrupting the circuit.
  • the control of the separable contacts can be manual using a lever arranged on the front face of the device.
  • the static switch is housed inside the molded case in a compartment provided under one of the terminals, but this arrangement can cause overheating detrimental to the proper functioning of the device and also requires an increase in the enclosure profile.
  • the present invention aims to allow the realization of an apparatus with static switch and integrated circuit breaker allowing efficient cooling of the static switch while respecting a standard template.
  • the apparatus according to the invention is characterized in that said housing has in its rear part a first housing delimited by an external metal plate forming the bottom of the housing and an intermediate partition separating a second housing, and that the static switch is disposed in said first housing in thermal contact with the metal plate, said separable contacts being housed in the second housing.
  • the cooling can be reinforced by attaching a radiator to the external metal plate and the protection of the static switch can be achieved by providing a shunt circuit for the static switch which is switched on by switching the arc drawn between the contacts to a bow horn.
  • the shunting circuit advantageously comprises an arcing horn arranged near one of the contacts to capture the arc as soon as it forms and this arcing horn extends in the direction of the other contact to constitute a re-ignition zone. , this occurs on the arcing horn and not on the contact, preventing any passage of current through the static switch.
  • the power terminals and the control terminals of the static switch are arranged on the small side faces of the housing, while the movable contact struggles in a plane parallel to these small side faces.
  • the thermal trip device in particular the bimetallic strip, is moved in an adjacent plane.
  • a pole 10 of a modular apparatus with molded housing 12 has a front face 18 crossed by a control handle 20.
  • the rear face of the housing 12 is constituted by a metal plate 16, which confines with an insulating intermediate partition 14, parallel to the plate 16, a housing 68 of shallow depth.
  • the trip device 32 consists of a bimetallic strip 34 and a coil 36 connected in series with the contacts 22, 24 between power terminals 38, 40 of the pole.
  • the breaking chamber 26 is framed by two horns, lower 39 and upper 41, extending parallel to the sheets 28 and to the partition 14.
  • the mechanism 30 comprises a contact arm 42 carrying the movable contact 24 and pivotally mounted on a bent lever 44 coupled by a stirrup 46 to the lever 20.
  • a trigger lever 48 is pivotally mounted on an axis 50 and cooperates with the end of the contact arm 42 to secure the latter to the bent lever 44.
  • a lock 52 cooperates with the trigger lever 48, this lock being able to be actuated by the bimetallic strip 34 in the event of overload or by the electromagnetic trip unit with coil 36. The release of the lock 52 causes the trigger lever 48 to pivot and the movable contact 24 to open under the action of a spring (not shown).
  • a static switch 56 such as a triac or a pair of thyristors upside down, is electrically connected in series with the contacts 22, 24 and the releases 34, 36.
  • the control circuit of the static switch 56 is connected by conductors 58 to control terminals 59, 60.
  • the static switch 56 is electrically connected in the main circuit between the fixed contact 22 and the terminal 40.
  • the movable contact 24 is connected to the opposite terminal 38 through the coil 36 and the bimetallic strip 34 The incoming current at a time given by terminal 38 runs through bimetallic strip 34, coil 36, contacts 22, 24, switch 56 to exit via terminal 40.
  • the upper arc horn 41 is connected to terminal 38, while the lower arc horn 39 extends to the vicinity of the fixed contact 22, being separated from the latter by a small gap 66.
  • the lower arc horn 39 is further connected by a conductor 62 to a connection point 64 of the main circuit located between the static switch 56 and terminal 40.
  • the housing 12 has two large parallel side faces 72, 74 and two small parallel side faces 76, 78 having recesses 80 defining an enlarged portion on the bottom side of the housing 12
  • the power terminals 38, 40 are arranged on the side of the small side wall 76 in the enlarged part 80 of the housing, while the control terminals 59, 60 are arranged on the opposite side towards the small side wall 78.
  • break 26 the coil 36 and the mechanism 30 are superimposed parallel to the small side faces 76, 78 being interposed between the intermediate partition 14 and the lever 20.
  • the bimetallic strip 34 is offset laterally relative to this stack to reduce the size of the housing 12 in the direction of the small lateral faces 76, 78.
  • the bimetallic strip 34 has been shown in the plane in broken lines to facilitate the understanding of how it works.
  • the movement plane of the movable contact 22 is parallel to the small lateral faces 76, 78.
  • the enlarged part 80 of the housing 12 has notches 82 freeing the central part of the metal plate 16 adjacent to the edges of the walls 76, 78.
  • These exposed parts of the metal plate T16 have holes 84 for the passage of fixing screws, in particular on a radiator (not shown) attached to the metal plate 16.
  • the handle 20 disposed on the front allows manual control of opening and closing of the device.
  • the particular shape of the housing 12 allows an alignment of a series of devices, the large lateral faces 72, 74 of the successive devices being placed side by side.
  • the static switch 56 is arranged in a separate housing that is easily accessible from the outside.
  • the shunting of the switch 56 is effected by switching the arc on the horn 39, 70 for guiding the arc disposed near one of said contacts and shaped so that upon separation of the contacts the distance between the horn 70 and the other of said contacts 24 is less than the separation distance of the contacts 22, 24 to avoid any re-ignition of the arc on the contacts.
  • the end of the arcing horn 39 separated from the fixed contact 22 by a small gap 66, has a boss 70 in the direction of the movable contact 24.
  • the boss 70 is offset laterally from the fixed contact 22 in the direction of opening of the movable contact 24.
  • the boss 70 is thus disposed before the fixed contact 22 relative to the closing direction of the movable contact at a distance from this contact less than the separation distance of the contacts 22, 24, during opening or in the open position. In the case of a reboot, the latter will intervene between the movable contact 24 and the boss 70 and not between the contacts 22, 24. This avoids a re-circuiting of the static switch 56 with risks of destruction.

Landscapes

  • Breakers (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)
EP87400333A 1986-02-28 1987-02-16 Appareil de coupure de courant à commutateur statique et disjoncteur de protection Expired - Lifetime EP0236202B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87400333T ATE59497T1 (de) 1986-02-28 1987-02-16 Stromunterbrechungsapparat mit statischem schalter und schutzlastschalter.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FR8602967 1986-02-28
FR8602968A FR2595163B1 (fr) 1986-02-28 1986-02-28 Disjoncteur electrique a protection amelioree
FR8602967A FR2595164B1 (fr) 1986-02-28 1986-02-28 Appareil de coupure de courant a commutateur statique et disjoncteur de protection integre
FR8602968 1986-02-28

Publications (2)

Publication Number Publication Date
EP0236202A1 EP0236202A1 (fr) 1987-09-09
EP0236202B1 true EP0236202B1 (fr) 1990-12-27

Family

ID=26225058

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87400333A Expired - Lifetime EP0236202B1 (fr) 1986-02-28 1987-02-16 Appareil de coupure de courant à commutateur statique et disjoncteur de protection

Country Status (10)

Country Link
US (1) US4768007A (enrdf_load_stackoverflow)
EP (1) EP0236202B1 (enrdf_load_stackoverflow)
JP (1) JP2583227B2 (enrdf_load_stackoverflow)
CN (1) CN1013231B (enrdf_load_stackoverflow)
AU (1) AU593886B2 (enrdf_load_stackoverflow)
CA (1) CA1256917A (enrdf_load_stackoverflow)
DE (1) DE3766982D1 (enrdf_load_stackoverflow)
ES (1) ES2020284B3 (enrdf_load_stackoverflow)
IN (1) IN169108B (enrdf_load_stackoverflow)
PT (1) PT84390B (enrdf_load_stackoverflow)

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Also Published As

Publication number Publication date
CN87100992A (zh) 1987-09-09
IN169108B (enrdf_load_stackoverflow) 1991-09-07
CN1013231B (zh) 1991-07-17
ES2020284B3 (es) 1991-08-01
AU6954187A (en) 1987-09-03
JPS62206736A (ja) 1987-09-11
AU593886B2 (en) 1990-02-22
PT84390B (pt) 1989-07-31
DE3766982D1 (de) 1991-02-07
PT84390A (fr) 1987-03-01
EP0236202A1 (fr) 1987-09-09
CA1256917A (en) 1989-07-04
US4768007A (en) 1988-08-30
JP2583227B2 (ja) 1997-02-19

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