EP0303210B1 - Schutzeinrichtung für einen elektromagnetischen Antrieb eines Schaltgerätes - Google Patents

Schutzeinrichtung für einen elektromagnetischen Antrieb eines Schaltgerätes Download PDF

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Publication number
EP0303210B1
EP0303210B1 EP88112847A EP88112847A EP0303210B1 EP 0303210 B1 EP0303210 B1 EP 0303210B1 EP 88112847 A EP88112847 A EP 88112847A EP 88112847 A EP88112847 A EP 88112847A EP 0303210 B1 EP0303210 B1 EP 0303210B1
Authority
EP
European Patent Office
Prior art keywords
switch
electromagnetic drive
operating element
protective device
switching
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
EP88112847A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0303210A2 (de
EP0303210A3 (en
Inventor
Jean-Luc Payet-Burin
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.)
Eaton Industries GmbH
Original Assignee
Kloeckner Moeller GmbH
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 Kloeckner Moeller GmbH filed Critical Kloeckner Moeller GmbH
Publication of EP0303210A2 publication Critical patent/EP0303210A2/de
Publication of EP0303210A3 publication Critical patent/EP0303210A3/de
Application granted granted Critical
Publication of EP0303210B1 publication Critical patent/EP0303210B1/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
    • H01H50/54—Contact arrangements
    • H01H50/541—Auxiliary contact devices
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
    • H01H47/22—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for supplying energising current for relay coil
    • H01H47/226—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for supplying energising current for relay coil for bistable relays

Definitions

  • the invention relates to a protective device for an electromagnetic drive of a switching device, consisting of a delay arrangement coupled to the electromagnetic drive and an interrupter switch arranged in the coil supply and controlled by the delay arrangement.
  • Such electromagnetic drives are often equipped with optimized electromagnets that are only designed for short-term operation. If these electromagnets are exposed to permanent loads, there is a risk of overheating and destruction. It is therefore necessary to have a protective device that prevents the electromagnet from being loaded for the permissible time even in the event of a fault or incorrect operation.
  • circuit breaker is opened by means of an actuating element which is positively or non-positively coupled to a changeover lever when the solenoid of the electromagnetic drive remains energized for longer than the time predetermined by the delay arrangement.
  • the invention is characterized in particular by the fact that this interrupter switch is coupled to a simply constructed actuating element and is actuated by a changeover lever only when the electromagnet is loaded by the current present for longer than the changeover lever driven by a delay mechanism requires an idle travel "s" to cover.
  • Fig. 1 the operative connection of the delay arrangement 3 with the electromagnetic drive 2 is shown.
  • the electromagnetic drive 2 operates via actuating elements 11 and 12 of a switching mechanism 21 on a rocker switch 13 of a switching device 1 and causes the switching device 1 to be switched on or off with each switching pulse on the electromagnet 20 which acts on the switching mechanism 21.
  • the contacts of the auxiliary switch 6b are either closed or open and the electromagnetic drive 2 can be activated via the auxiliary switches 6d or 6e, which can be arranged in a control room located away from the switching device 1.
  • a "tripped” position is provided, which can be set as a result of a protective function of the switching device 1.
  • the “tripped” position is expressed in the switch position of the auxiliary switch 6a and requires a reset via the “reset switch” 6c before it is switched on again.
  • All switching functions can be carried out both on the switching device 1 directly via the switching elements 14 or 15 and by remote switching via the auxiliary switch arrangement 6, by means of which the electromagnet 20 of the electromagnetic drive 2 is activated.
  • the electromagnet 20 is only loaded with short current pulses, for example below 50 ms, which do not yet lead to overheating and destruction.
  • short current pulses for example below 50 ms
  • a protective device consisting of the delay arrangement 3 and the interrupter switch 5 is provided, which, in the case of current pulses of more than 50 ms, the interrupter switch 5 opens and the power supply is interrupted.
  • the interrupter switch 5 is designed as a changeover switch with two stable switching positions.
  • the delay arrangement 3 is activated with each switching pulse on the electromagnet 20 by the switching mechanism 21 via a connecting element 34 in such a way that the switching lever 30 moves in the sense of an opening of the interrupter switch 5, ie the switching arm 33 moves in the direction of the actuating element 31, which with the circuit breaker 5 is connected by a switching element 35.
  • the switchover movement of the switchover lever 30 is delayed by a known delay mechanism 3, which is not explained here in detail, such that the duration of movement of the switching arm 33 until the actuating element 31 is reached is below the maximum permissible current load period for the electromagnet 20.
  • the pulse duration when the drive 2 is operating properly is below this permissible load duration, so that the switching mechanism 21 returns to the starting position and thus the switching lever 30 also moves into its starting position shown in FIG. 2a before the actuating element 31 is reached by the switching arm 33 and opens the breaker switch 5.
  • the actuating element 31 is moved by the switching arm 33 in the sense of a contact opening of the interrupter switch 5.
  • the power supply is interrupted, the electromagnet drops and the switching mechanism 21 returns to the starting position.
  • the switching lever 30 is moved via the connecting element 34 in the sense of a contact closure of the interrupter switch 5.
  • the delay arrangement 3 also acts in this direction in such a way that the switching arm 32 moves the actuating element 31 after a period of time in the closing direction of the interrupter switch 5, which is sufficient to allow all moving parts of the electromagnetic drive 2 and the switch 1 to fall back into the starting position, so that the starting position is reached for all switching elements.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Breakers (AREA)
EP88112847A 1987-08-11 1988-08-06 Schutzeinrichtung für einen elektromagnetischen Antrieb eines Schaltgerätes Expired - Lifetime EP0303210B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873726624 DE3726624A1 (de) 1987-08-11 1987-08-11 Schutzeinrichtung fuer den elektromagnetischen antrieb eines schaltgeraetes
DE3726624 1987-08-11

Publications (3)

Publication Number Publication Date
EP0303210A2 EP0303210A2 (de) 1989-02-15
EP0303210A3 EP0303210A3 (en) 1990-08-22
EP0303210B1 true EP0303210B1 (de) 1994-07-13

Family

ID=6333473

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88112847A Expired - Lifetime EP0303210B1 (de) 1987-08-11 1988-08-06 Schutzeinrichtung für einen elektromagnetischen Antrieb eines Schaltgerätes

Country Status (2)

Country Link
EP (1) EP0303210B1 (enrdf_load_stackoverflow)
DE (2) DE3726624A1 (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114050640B (zh) * 2021-10-28 2024-12-27 施耐德万高（天津）电气设备有限公司 一种自动转换开关电磁铁驱动电路

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE640499C (de) * 1931-02-22 1937-01-06 Aeg Einrichtung zum Verhindern des Pumpens von ferngesteuerten elektrischen Schaltern
DE1765237B1 (de) * 1968-04-23 1972-02-03 Starkstrom Schaltgeraetefabrik Verzoegert schaltender Hilfskontakt fuer einen elektromagnetisch steuerbaren Schalter,insbesondere Schuetz
DE2915311A1 (de) * 1979-04-14 1980-10-23 Kloeckner Moeller Elektrizit Hilfsschalteranordnung mit verzoegerungsvorrichtung fuer niederspannungsschaltgeraete
FR2583192B1 (fr) * 1985-06-11 1987-08-07 Hager Electro Perfectionnement aux appareils de telecommande electriques

Also Published As

Publication number Publication date
DE3726624C2 (enrdf_load_stackoverflow) 1989-07-20
EP0303210A2 (de) 1989-02-15
DE3726624A1 (de) 1989-03-02
DE3850620D1 (de) 1994-08-18
EP0303210A3 (en) 1990-08-22

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