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EP1033736A1 - Magnetischer Betätiger mit Klappanker, insbesondere für einen Schutzschalter, und Schutzschalter mit einem solchen Betätiger - Google Patents

Magnetischer Betätiger mit Klappanker, insbesondere für einen Schutzschalter, und Schutzschalter mit einem solchen Betätiger Download PDF

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Publication number
EP1033736A1
EP1033736A1 EP00410016A EP00410016A EP1033736A1 EP 1033736 A1 EP1033736 A1 EP 1033736A1 EP 00410016 A EP00410016 A EP 00410016A EP 00410016 A EP00410016 A EP 00410016A EP 1033736 A1 EP1033736 A1 EP 1033736A1
Authority
EP
European Patent Office
Prior art keywords
pallet
branch
bevelled
free end
actuator
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
EP00410016A
Other languages
English (en)
French (fr)
Other versions
EP1033736B1 (de
Inventor
Robert Schneider Electric Industries SA Diconne
Corinne Schneider Electric Industries SA Roux
Christophe Schneider Electric Ind. SA Seraudie
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 Industries SAS
Original Assignee
Schneider Electric Industries SAS
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 Industries SAS filed Critical Schneider Electric Industries SAS
Publication of EP1033736A1 publication Critical patent/EP1033736A1/de
Application granted granted Critical
Publication of EP1033736B1 publication Critical patent/EP1033736B1/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
    • H01H50/00—Details of electromagnetic relays
    • H01H50/16—Magnetic circuit arrangements
    • H01H50/163—Details concerning air-gaps, e.g. anti-remanence, damping, anti-corrosion
    • 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 invention relates to a magnetic actuator, in particular for opening the contacts of a breaking device such as a circuit breaker and / or tripping said circuit breaker in the event of a fault electric, this actuator comprising a magnetic circuit formed by a yoke ferromagnetic, said cylinder head comprising a first and a second branch substantially parallel to each other connected by a transverse base piece, a pallet mobile mounted articulated by one of its ends on the free end of the first branch and cooperating at its other end with the free end of the second branch, a means of producing a magnetic field capable of moving the pallet in rotation between an open pallet rest position corresponding to the normal operation of the device and an active position corresponding to the appearance of an electrical fault in the device, in which the free end of the pallet is kept in the position of minimum reluctance with respect to the free end of the second branch.
  • the cylinder head is shaped of U and includes two branches of the same length, while the pallet is formed by a rectangular section plate.
  • the attraction force generated by the coil in the event of an electrical fault is minimum at the start of closing the pallet, and grows as the palette closes. As a result, the initial speed of the pallet is reduced, and consequently that the reaction time of the circuit breaker following a electrical fault is relatively high.
  • the object of the present invention is to provide an actuator and a circuit breaker incorporating it, with a reduced reaction time in the event of a defect electric.
  • the present invention relates to a magnetic actuator, this actuator being characterized in that the aforementioned pallet is shaped into an L and comprises a first arm articulated on the first branch of the breech and a second arm substantially perpendicular to the first arm, and cooperating with the second branch of the breech, the second branch and the second arm each comprising at their free end a part bevelled, the two bevelled parts being of complementary shape and able to be brought in a position in which said bevelled parts are opposite one with respect to the other and substantially parallel to each other, in the closed position of the pallet.
  • the air gap between the bevelled parts and the beveled parts themselves are arranged relative to the axis of rotation, in such a way that the torque associated with the force of attraction of the pallet on the cylinder head is maximum in open position of the pallet and decreases when the pallet moves from the open position to the closed position.
  • Figures 1,2 and 5 show an actuator A intended for use in an apparatus for electrical protection such as a circuit breaker.
  • This circuit breaker (not shown) is intended to be placed in an electrical circuit comprising electrical devices, in order to protect said devices in case of overcurrent or short circuit.
  • This actuator A is formed mainly by a ferromagnetic yoke 1 which consists of two lateral branches 2,3 connected by a base part 4.
  • the magnetic circuit thus formed is closed by a pallet 5 capable of pivoting around an axis of rotation X between an open position (fig. 1) and a closed position (fig. 2).
  • the pallet 5 has a first end 5a mounted articulated on the free end 2a of one 2, called the first, of the branches 2, 3 of the cylinder head 1, and a second end 5b able to be brought opposite with the free end 3a of the second branch 3 of the yoke 1 in order to close the magnetic circuit
  • the pallet 5 is returned to the open position by a return spring, not shown.
  • This open position corresponds to a normal operating state of the circuit breaker.
  • This actuator A also includes a coil 6 crossed by the current which must be monitored, and capable of generating, when an electrical fault occurs in the circuit, a magnetic flux capable of generating a magnetic attraction force between the second end 5b of the pallet 5 and the free end 3a of the second branch 3.
  • this attraction force F is greater than the return force of the aforementioned spring, the pallet 5 pivots in the direction of closing until that its free end 5b comes into contact with the free end 3a of the second branch 3, which causes tripping of the circuit breaker and / or the opening of the contacts of said circuit breaker.
  • the pallet 5 is L-shaped and has a first arm 7 mounted articulated by one 7a of its ends, on the free end 2a of the first branch 2, and a second arm 8 extending substantially perpendicular to the first arm 7 and having a free end 8a (5b) intended to cooperate with the free end 3a of the second branch 3.
  • these two ends 8a, 3a each have a bevelled part a , b and a non-bevelled part c, d.
  • the non-bevelled parts c, d are respectively parallel, to the first arm 7, as regards the pallet 5, and parallel to the base part 4, as regards the second branch 3 of the cylinder head 1.
  • FIG. 1 the pallet 5 is open, which corresponds to a normal state of the circuit breaker and of the circuit to be protected.
  • a magnetic flux is generated by the coil 6. If the attraction force generated by this flux is sufficient to counteract the return force of the spring, an effort will be generated on the free end 5b of the pallet 5 tending to bring it closer to the cylinder head 1.
  • the torque generated is very large when the air gap e is maximum, as illustrated in FIG. 3, from which it follows that the speed of movement at the start of opening is maximum.
  • FIG. 3 illustrates three curves u, v, w representing the evolution as a function of the value of the air gap respectively, of the torque generated by the main air gap located between the free ends 5b, 3a of the pallet and of the second branch (curve u), of the torque generated by the secondary air gap at the level of the articulation axis X (curve v) and of the sum of these two couples (curve w).
  • the value of the air gap e is represented on the abscissa x on the curve and varies from 0 to 4 mm, while the value of the forces developed is represented on the ordinate y and varies from 0 to 200 mm.N.
  • Figure 4 also illustrates three curves u, v, w representing the same data but for an actuator using a pallet of the conventional type as shown in Figure 2a.
  • the force generated at the start when the pallet 5 is open, by the main air gap (curve u) is around 160 and is therefore very high compared to that (about 4 mm.N) generated when using a standard palette.
  • the value of the air gap in the case of the invention is reduced, compared to that of the air gap of the prior art in which the air gap corresponded to the stroke of the pallet.
  • the value of the force in an actuator according to the invention is greater than that generated in the prior art.
  • the distance between the direction of the force F and the axis X is maximum in the open position of the pallet, since this direction is parallel to the branches 2,3 of the cylinder head 1.
  • the torque value is maximum in this position.
  • the torque F generated by the main air gap decreases to a value of approximately 70 mm.N.
  • the arrow F illustrating the force rotates counterclockwise to a position illustrated in FIG.
  • the force goes from a maximum value to a minimum value (fig.3), unlike the case of the actuator of the prior art (fig.4) for which it is the opposite occurs, despite an increase in the inertia of the pallet.
  • this decrease effect can be increased so as to obtain an electromagnetic brake of the pallet, preventing said pallet from impacting its stop too violently at the end of the stroke.
  • the magnetic circuit can be laminated. Thanks to the invention, an actuator has therefore been produced in which the force value is very high, and maximum, at the start of closure, from which an immediate reaction of the actuator results in the event of an electrical fault, d 'where improved reactivity of the circuit breaker.
  • the invention is not limited to the embodiments described and illustrated which have been given only by way of example.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Breakers (AREA)
  • Push-Button Switches (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Vehicle Body Suspensions (AREA)
  • Switches With Compound Operations (AREA)
  • Switches That Are Operated By Magnetic Or Electric Fields (AREA)
  • Mechanisms For Operating Contacts (AREA)
  • Electromagnets (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)
EP00410016A 1999-03-02 2000-02-16 Magnetischer Betätiger mit Klappanker, insbesondere für einen Schutzschalter, und Schutzschalter mit einem solchen Betätiger Expired - Lifetime EP1033736B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9902839A FR2790593B1 (fr) 1999-03-02 1999-03-02 Actionneur magnetique a palette en particulier pour disjoncteur et disjoncteur equipe d'un tel actionneur
FR9902839 1999-03-02

Publications (2)

Publication Number Publication Date
EP1033736A1 true EP1033736A1 (de) 2000-09-06
EP1033736B1 EP1033736B1 (de) 2006-07-05

Family

ID=9542938

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00410016A Expired - Lifetime EP1033736B1 (de) 1999-03-02 2000-02-16 Magnetischer Betätiger mit Klappanker, insbesondere für einen Schutzschalter, und Schutzschalter mit einem solchen Betätiger

Country Status (10)

Country Link
EP (1) EP1033736B1 (de)
CN (1) CN1181506C (de)
AT (1) ATE332569T1 (de)
DE (1) DE60029152T2 (de)
DK (1) DK1033736T3 (de)
ES (1) ES2265899T3 (de)
FR (1) FR2790593B1 (de)
NO (1) NO20000754L (de)
PL (1) PL194996B1 (de)
PT (1) PT1033736E (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1258897A1 (de) * 2001-05-17 2002-11-20 Siemens Energy & Automation, Inc. Elektromagneteinheit mit Klappanker
FR2972844A1 (fr) * 2011-03-15 2012-09-21 Schneider Electric Ind Sas Actionneur rotatif et contacteur comportant un tel actionneur
WO2014094809A1 (de) * 2012-12-21 2014-06-26 Festo Ag & Co. Kg Elektromechanische antriebseinrichtung und magnetventil

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102522271B (zh) * 2011-12-31 2014-06-18 常熟开关制造有限公司(原常熟开关厂） 断路器用脱扣电磁铁
RU2630781C2 (ru) * 2012-06-11 2017-09-13 ЛЭЙБИНЕЛ, ЭлЭлСи Электрическое переключающее устройство и реле, включающее в себя ферромагнитный или магнитный якорь, имеющий конусообразный участок

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH72323A (de) * 1914-11-30 1916-05-01 Bbc Brown Boveri & Cie Maximalzeitrelais
GB103641A (en) * 1916-01-10 1917-07-05 Bbc Brown Boveri & Cie An Improved Resilient Pivotal Connection between an Alternating Current Electro Magnet and its Armature.
FR613481A (fr) * 1925-07-20 1926-11-18 Jules Richard Sa Des Ets Perfectionnement aux électro-aimants
DE572086C (de) * 1931-06-16 1933-03-10 Aeg Magnet mit Gleitanker, insbesondere fuer UEberstromausloeser elektrischer Schalter
CH209749A (fr) * 1938-08-29 1940-04-30 Sodeco Compteurs De Geneve Electroaimant, applicable notamment aux installations téléphoniques.

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1098589B (de) * 1954-03-18 1961-02-02 Siemens Ag Schnellausloeser, insbesondere zum Einbau in Motorschutzschalter

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH72323A (de) * 1914-11-30 1916-05-01 Bbc Brown Boveri & Cie Maximalzeitrelais
GB103641A (en) * 1916-01-10 1917-07-05 Bbc Brown Boveri & Cie An Improved Resilient Pivotal Connection between an Alternating Current Electro Magnet and its Armature.
FR613481A (fr) * 1925-07-20 1926-11-18 Jules Richard Sa Des Ets Perfectionnement aux électro-aimants
DE572086C (de) * 1931-06-16 1933-03-10 Aeg Magnet mit Gleitanker, insbesondere fuer UEberstromausloeser elektrischer Schalter
CH209749A (fr) * 1938-08-29 1940-04-30 Sodeco Compteurs De Geneve Electroaimant, applicable notamment aux installations téléphoniques.

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1258897A1 (de) * 2001-05-17 2002-11-20 Siemens Energy & Automation, Inc. Elektromagneteinheit mit Klappanker
FR2972844A1 (fr) * 2011-03-15 2012-09-21 Schneider Electric Ind Sas Actionneur rotatif et contacteur comportant un tel actionneur
WO2014094809A1 (de) * 2012-12-21 2014-06-26 Festo Ag & Co. Kg Elektromechanische antriebseinrichtung und magnetventil

Also Published As

Publication number Publication date
ES2265899T3 (es) 2007-03-01
PT1033736E (pt) 2006-10-31
EP1033736B1 (de) 2006-07-05
FR2790593B1 (fr) 2001-05-04
ATE332569T1 (de) 2006-07-15
CN1265513A (zh) 2000-09-06
NO20000754L (no) 2000-09-04
PL338665A1 (en) 2000-09-11
FR2790593A1 (fr) 2000-09-08
CN1181506C (zh) 2004-12-22
DE60029152D1 (de) 2006-08-17
NO20000754D0 (no) 2000-02-15
DE60029152T2 (de) 2007-05-31
DK1033736T3 (da) 2006-11-06
PL194996B1 (pl) 2007-07-31

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