EP0693764A1 - Elektrischer Lastschalter mit elektromagnetischem Betätiger für Hochstrom - Google Patents

Elektrischer Lastschalter mit elektromagnetischem Betätiger für Hochstrom Download PDF

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Publication number
EP0693764A1
EP0693764A1 EP95410065A EP95410065A EP0693764A1 EP 0693764 A1 EP0693764 A1 EP 0693764A1 EP 95410065 A EP95410065 A EP 95410065A EP 95410065 A EP95410065 A EP 95410065A EP 0693764 A1 EP0693764 A1 EP 0693764A1
Authority
EP
European Patent Office
Prior art keywords
pallet
air gap
striker
circuit breaker
contact arm
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.)
Granted
Application number
EP95410065A
Other languages
English (en)
French (fr)
Other versions
EP0693764B1 (de
Inventor
Jean-Yves Amblard
François Bucci
Philippe Delcambre
Eric Domejean
Alain Menier
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.)
Schneider Electric SE
Original Assignee
Schneider Electric SE
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 Schneider Electric SE filed Critical Schneider Electric SE
Publication of EP0693764A1 publication Critical patent/EP0693764A1/de
Application granted granted Critical
Publication of EP0693764B1 publication Critical patent/EP0693764B1/de
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
    • H01H71/24—Electromagnetic mechanisms
    • H01H71/2409—Electromagnetic mechanisms combined with an electromagnetic current limiting mechanism
    • 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
    • H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
    • H01H2009/305—Means for extinguishing or preventing arc between current-carrying parts including means for screening for arc gases as protection of mechanism against hot arc gases or for keeping arc gases in the arc chamber
    • 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
    • H01H71/24—Electromagnetic mechanisms
    • H01H71/2454—Electromagnetic mechanisms characterised by the magnetic circuit or active magnetic elements
    • 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
    • H01H71/24—Electromagnetic mechanisms
    • H01H71/2472—Electromagnetic mechanisms with rotatable armatures

Definitions

  • the object of the invention is to provide an electrical circuit breaker for high performance, insensitive to any phenomenon of external manifestations.
  • the circuit breaker according to the invention is characterized in that the striker is formed by an elongated piece situated between the magnetic circuit and the first compartment, and cooperating with the means for supporting the contact arm to close the passage between the first and second compartments after attraction of the pallet, and to free said passage after the return of the pallet to the separated position.
  • the axis of connection of the striker on the pallet is disposed in an intermediate zone between the axis of articulation of the pallet, and the second air gap.
  • the striker constitutes a screen which adapts to the internal part of the housing. The passage between these two compartments is advantageously located above the first air gap opposite the fixed contact.
  • the means for supporting the contact arm comprise drive stops cooperating with the mechanism, and a bearing face cooperating with the free end of the striker to delimit said passage
  • Figure 1 is a schematic elevational view of the circuit breaker equipped with the actuator according to the invention.
  • FIG. 2 represents a perspective view of the actuator of FIG. 1.
  • Figure 3 is a sectional view through the median plane of the actuator of Figure 2, the paddle and the striker being in the inactive position.
  • Figure 4 shows a plan view of Figure 3.
  • Figure 5 is an identical view to Figure 3, in the active position of the pallet and the striker.
  • Figure 6 is a plan view of Figure 5.
  • a circuit breaker 1 comprises a housing 2 containing a fixed contact 3, a movable contact 4 mounted at the end of a movable contact arm 5, a breaking chamber 6 and various elements of electrical connections (not shown) used to connect the fixed and movable contact to terminals (not shown).
  • the circuit breaker further includes an electromagnetic actuator AE causing the circuit breaker to trip in the event of a fault, and rapid separation of the fixed and mobile contacts 3, 4.
  • the electromagnetic actuator AE comprises a yoke 7 made of magnetic material, a swivel pallet 8, and a striker 9.
  • the cylinder head or magnetic circuit 7 in the form of an H comprises a cylindrical core 10 surrounded by a coil 34, and two flanks 11, 12 arranged parallel to each other, and extending perpendicular to the axis of the core 10
  • the side 11 has a first end 13 directed towards the pallet 8 and a second opposite end 14.
  • the other sidewall 12 comprises a third end (not shown) directed towards the pallet 8 and an opposite fourth end 16.
  • the first end 13 and the third end form polar planar faces cooperating with the flat face 18 of the pallet 8.
  • the second and fourth ends 14, 16 form flat faces arranged opposite one another to delimit a first air gap 17.
  • the pallet 8 When the electromagnetic actuator AE is at rest, the pallet 8 is located at a certain distance from the face 18 of the cylinder head 7 by forming a second air gap 19.
  • the pivoting pallet 8 is mounted on a hinge pin 21 and the movable contact arm 5 is also pivotally mounted by means of another articulation axis 22.
  • the fixed contact 3 is located at the base of the air gap 17, and at least part of the movable contact arm 5 extends through the air gap 17.
  • the striker 9 is in the form of an elongated substantially rectangular part, one end of which is articulated on a connecting pin 23 arranged on the pallet 8, and the other free end 24 of which is situated near the movable contact arm 5, and on the side opposite the fixed contact 3.
  • the width of the striker roughly corresponds to the width of the housing.
  • the contact arm 5 is carried by support means 26 arranged opposite the movable contact 4, and having drive stops cooperating with the mechanism (not shown) to ensure closure and the separation of the contacts 3, 4.
  • the support means 26 additionally comprise a bearing face 36 cooperating with the free end 24 of the striker 9.
  • the connecting axis 23 of the striker 9 on the pallet 8 is located in an intermediate zone between the articulation axis 21 and the second air gap 19.
  • the free end 24 of the striker 9 is separated from the bearing face 36 by a passage 28 in the form of a slot whose thickness is variable as a function of the state of magnetization of the electromagnetic actuator AE.
  • the striker 9 in addition to its acceleration function of the contact arm 5 , thus plays a role of separation screen between the two compartments, and the slot 28 remains closed in the attracted position of the pallet 8, that is to say as long as the current in the coil exceeds a predetermined value. Closing the slot 28 during the arc extinction phase prevents any gas backflow towards the upper compartment 30, and in particular towards the orifice for passage of the lever, so as to avoid any phenomenon of external manifestations at the front of the housing 2.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Breakers (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Electromagnets (AREA)
  • Keying Circuit Devices (AREA)
  • Vehicle Body Suspensions (AREA)
  • Relay Circuits (AREA)
EP95410065A 1994-07-18 1995-06-29 Elektrischer Lastschalter mit elektromagnetischem Betätiger für Hochstrom Expired - Lifetime EP0693764B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9409067 1994-07-18
FR9409067A FR2722609B1 (fr) 1994-07-18 1994-07-18 Disjoncteur electrique a actionneur electromagnetique pour calibres eleves

Publications (2)

Publication Number Publication Date
EP0693764A1 true EP0693764A1 (de) 1996-01-24
EP0693764B1 EP0693764B1 (de) 1999-03-24

Family

ID=9465633

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95410065A Expired - Lifetime EP0693764B1 (de) 1994-07-18 1995-06-29 Elektrischer Lastschalter mit elektromagnetischem Betätiger für Hochstrom

Country Status (9)

Country Link
EP (1) EP0693764B1 (de)
CN (1) CN1052332C (de)
AT (1) ATE178160T1 (de)
DE (1) DE69508482T2 (de)
ES (1) ES2131291T3 (de)
FR (1) FR2722609B1 (de)
HU (1) HU215878B (de)
RU (1) RU2144715C1 (de)
TR (1) TR199500864A2 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2768856A1 (fr) * 1997-09-24 1999-03-26 Schneider Electric Sa Disjoncteur a declencheur electromagnetique a propulseur d'un contact mobile a fourche

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2541569B2 (de) * 2011-06-29 2023-12-20 Hitachi Energy Ltd Zweistrompfad für hohen Nennstrom
CN109417003B (zh) * 2016-08-30 2019-11-26 赵建平 一种断路器支架

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH87462A (de) * 1920-04-15 1920-12-01 Sprecher & Schuh Ag Selbst-Auslöser-Einrichtung auf Einführungsisolatoren von Ölschaltern.
DE2945618A1 (de) * 1979-10-23 1981-05-07 BBC AG Brown, Boveri & Cie., Baden, Aargau Verfahren zum oeffnen eines ueberstromschalters sowie ueberstromschalters sowie ueberstromschalter zur ausfuehrung des verfahrens
EP0225207A1 (de) * 1985-10-31 1987-06-10 Merlin Gerin Kinematische Übertragungskette zwischen dem Steuermechanismus und den Polen eines elektrischen Lastschalters mit einem gespritzten Isoliergehäuse

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH87462A (de) * 1920-04-15 1920-12-01 Sprecher & Schuh Ag Selbst-Auslöser-Einrichtung auf Einführungsisolatoren von Ölschaltern.
DE2945618A1 (de) * 1979-10-23 1981-05-07 BBC AG Brown, Boveri & Cie., Baden, Aargau Verfahren zum oeffnen eines ueberstromschalters sowie ueberstromschalters sowie ueberstromschalter zur ausfuehrung des verfahrens
EP0225207A1 (de) * 1985-10-31 1987-06-10 Merlin Gerin Kinematische Übertragungskette zwischen dem Steuermechanismus und den Polen eines elektrischen Lastschalters mit einem gespritzten Isoliergehäuse

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2768856A1 (fr) * 1997-09-24 1999-03-26 Schneider Electric Sa Disjoncteur a declencheur electromagnetique a propulseur d'un contact mobile a fourche
EP0905735A1 (de) * 1997-09-24 1999-03-31 Schneider Electric Sa Schutzschalter mit elektromagnetischen Auslöser mit Antrieb für einen beweglichen und gabelförmigen Kontakt

Also Published As

Publication number Publication date
ES2131291T3 (es) 1999-07-16
HUT73314A (en) 1996-07-29
TR199500864A2 (tr) 1996-06-21
HU9502111D0 (en) 1995-09-28
DE69508482D1 (de) 1999-04-29
FR2722609A1 (fr) 1996-01-19
EP0693764B1 (de) 1999-03-24
CN1052332C (zh) 2000-05-10
RU2144715C1 (ru) 2000-01-20
FR2722609B1 (fr) 1996-08-30
DE69508482T2 (de) 1999-10-07
ATE178160T1 (de) 1999-04-15
RU95113114A (ru) 1997-06-27
CN1118511A (zh) 1996-03-13
HU215878B (hu) 1999-03-29

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