EP0450104A1 - Disjoncteur rapide - Google Patents

Disjoncteur rapide Download PDF

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Publication number
EP0450104A1
EP0450104A1 EP90105938A EP90105938A EP0450104A1 EP 0450104 A1 EP0450104 A1 EP 0450104A1 EP 90105938 A EP90105938 A EP 90105938A EP 90105938 A EP90105938 A EP 90105938A EP 0450104 A1 EP0450104 A1 EP 0450104A1
Authority
EP
European Patent Office
Prior art keywords
contact
contact member
switch according
speed switch
current
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
EP90105938A
Other languages
German (de)
English (en)
Other versions
EP0450104B1 (fr
Inventor
Fritz Dipl.-Phys. Pohl
Wilfried Jaehner
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.)
Siemens AG
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
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 Siemens AG, Siemens Corp filed Critical Siemens AG
Priority to DE59009511T priority Critical patent/DE59009511D1/de
Priority to AT90105938T priority patent/ATE126388T1/de
Priority to EP90105938A priority patent/EP0450104B1/fr
Publication of EP0450104A1 publication Critical patent/EP0450104A1/fr
Application granted granted Critical
Publication of EP0450104B1 publication Critical patent/EP0450104B1/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
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/36—Contacts characterised by the manner in which co-operating contacts engage by sliding
    • H01H1/365—Bridging contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
    • H01H3/222—Power arrangements internal to the switch for operating the driving mechanism using electrodynamic repulsion
    • 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
    • H01H9/32—Insulating body insertable between contacts
    • 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
    • H01H9/302—Means for extinguishing or preventing arc between current-carrying parts wherein arc-extinguishing gas is evolved from stationary parts
    • 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 high-speed switch for low-voltage systems with a device for detecting a short-circuit current and an electrodynamic eddy current release, which is provided with a drive which is arranged in the field of a coil and is provided for moving a contact member in an arcing chamber.
  • the magnetic field of a coil through which alternating current or a current with a high rate of rise flows, induces current in the opposite direction in a drive ring magnetically coupled to it. Due to the repulsive effect of the two currents, a contact member which is non-positively connected to the drive ring receives a high acceleration. The movable contact piece quickly reaches the full starting position through the contact element. With such triggers, switching times of around 0.5 ms can be achieved from impulse initiation to contact disconnection. Rising short-circuit currents are limited accordingly by these short idle times (low-voltage circuit breakers by H. Franken, Springer-Verlag 1980).
  • a high current arc can be quenched in a narrow gap.
  • the arc is either generated by contact separation in the gap or forced into it by electrodynamic forces.
  • the arc column then assumes a band-shaped cross section in the flat gap and thus comes into contact with the gap walls over a large area, which can preferably consist of insulating material.
  • the arc creates a pressure increase in the gap, which results in a corresponding increase in the arc field strength.
  • resilient contact pieces protruding radially opposite one another can be used, which are in an electrically conductive connection when the switch is closed and which are separated during the switch-off process by interposing a slide consisting of insulating material.
  • the tubular quenching chamber has a longitudinal bore which is adapted to the cross section of the slide.
  • a piece of metal inserted in the slide connects the contacts in the on position.
  • the slide valve which can preferably consist of a material that emits gas at elevated temperature, is between the opened contacts pushed (DE-PS 1 590 296).
  • the invention has for its object to provide a high-speed switch that allows a limitation of the short-circuit current in electrical systems by the rapid build-up of a high arc voltage and is constructed in a simple manner.
  • This switch has a simple structure and enables the deletion of currents with a large current in a very short time.
  • the gap formed between the contact member and the inner wall of the arcing chamber will not significantly exceed 5 mm even at very high current intensities and will preferably be at most 0.5 mm, in particular at most 0.2 mm.
  • a particularly advantageous embodiment of the rapid switch contains a contact member with a cylindrical surface, which is alternately provided with contact rings and insulating rings in the direction of movement.
  • Each contact ring is assigned two contact pins, which face each other radially in the hollow cylindrical quenching chamber.
  • a further embodiment of the high-speed switch with contact pins arranged one behind the other in the direction of movement of the contact element can advantageously be used to isolate semiconductor components in the event of a short circuit.
  • FIG. 1 schematically illustrates an exemplary embodiment of a quick switch according to the invention.
  • Figure 2 shows the current profile in a diagram.
  • FIG. 3 shows the current pulse for exciting the eddy current release and
  • FIG. 4 shows the voltage curve.
  • Figure 5 shows an embodiment of the quick switch with contact pins, which are each radially opposite each other in the arcing chamber.
  • An embodiment of the rapid switch for unlocking a semiconductor component is illustrated in FIG. 6.
  • FIG. 7 shows a special embodiment of the quick switch.
  • a contact member 2 is movably arranged in an arcing chamber 3 in a longitudinal direction.
  • the direction of movement of the contact member 2 is indicated by an arrow 4.
  • the contact member 2 is positively and non-positively connected to the drive ring 6 of an eddy current release 5, the magnet coil of which is denoted by 7 in the figure.
  • the eddy current release 5 is arranged in an enlarged part of the arcing chamber, which is provided with an opening 8 at the other end.
  • two contact pins 11 and 12 are arranged one behind the other in the chamber wall 10 in such a way that their ends rest on one end of a contact bridge 18 in the rest position of the contact member 2, which should consist, for example, of a flat insulating material body the surface are separated from each other by an insulating layer 19.
  • the contact pins 11 and 12 are under a contact pressure, which in the figure by unspecified Feathers is indicated.
  • the coil 7 of the eddy current release 5 can, for example, be connected to an electronic relay that continuously monitors the current rise in the operating current and, when an adjustable current rise or an adjustable response value, for example 2 to 5 times the nominal current, is exceeded, the coil 7 by means of a pulse-shaped release current stimulates.
  • the tripping current generates eddy currents in the drive ring in the opposite direction to the tripping current.
  • the repulsive forces move the contact member 2 abruptly in the direction of arrow 4.
  • the electrically conductive contact areas at the ends of the contact bridge 18 are arranged such that with the movement of the contact member 2 separation distances between the lower ends of the contact pins 11 and 12 and the contact areas of the contact bridge 18 can be opened.
  • the contact pins 11 and 12 are arranged one behind the other in the direction of movement of the contact member 2.
  • a contact bridge can also be provided, the contact areas of which lie opposite one another on the upper and lower flat side of the contact member 2.
  • the contact pins 11 and 12 are then arranged transversely to the longitudinal direction of the contact member 2 in the upper and lower chamber wall 10.
  • FIG. 2 in which the forward current I D is plotted between the contact pins 11 and 12 of the high-speed switch as a function of the time t, in one Switch according to Figure 1 for a prospective, single-pole short-circuit current of, for example, 40 kA at a mains voltage of 240 V ⁇ at time t o a let-through current I D (letthrough current) rise, which is to be deleted by the quick switch.
  • An electronically preselected current threshold value I S defines the triggering condition of the eddy current trigger 5 and should be, for example, approximately 2.5 kA, so that, for example, starting currents for a motor with approximately 100 A nominal current cannot lead to triggering. Due to the intrinsic time of the electronics, not shown in FIG.
  • the build-up of the arc voltage between contacts 11 and 12 begins at time t 2.
  • the time delay between the drive pulse I A at time t 1 and the beginning of the steep arc voltage rise of about 2.5 V / ⁇ s at time t 3 should be, for example, about 100 ⁇ s.
  • This time delay is due to the acceleration phase of the contact member 2, which must first travel a distance of, for example, approximately 2.5 mm after being driven by the drive ring 6.
  • the forward current I D can thus rise to a maximum value of approximately 5.2 kA.
  • the maximum arc voltage according to FIG. 4 is approximately 700 V.
  • the forward current I D is extinguished and the voltage U at the contact pins 11 and 12 is limited to a voltage of approximately 340 V ⁇ .
  • the erase time from the tripping current I A at time t 1 to the extinction of the forward current I D at time t 4 is thus less than 0.5 ms.
  • a three-phase fast switch is provided with contact pins 11 to 16, two of which are each in the wall of a hollow cylindrical chamber 3 radially face each other.
  • the switching sections can be provided for operational switching; the eddy current release 5 is then actuated only in the event of a short circuit at a predetermined current threshold value I S with the release current I A.
  • the switching pins 11 to 16 are then each provided with a drive for a fixed switch-on and switch-off position, these drives are only indicated schematically in the figure, denoted by 21 to 26 and connected to the assigned switch pin only by a dashed line of action.
  • the contact element 2 is provided with a special embodiment of a bridge system 40, in which the contact element is in the switched-on state 2 electrically connects the contact pins 11 and 12 to a contact bridge 38.
  • the contact pin 13 is connected to the bridge system 40 by a further contact bridge 39.
  • the contact bridge 39 is designed so that it forms a common contact surface with the contact bridge 38.
  • This switch is therefore particularly suitable for relieving a semiconductor component 32, for example a thyristor or a triac, in the event of a short circuit.
  • a semiconductor component 32 for example a thyristor or a triac.
  • a rotary movement of the contact member 2 by the eddy current drive 5 can optionally be provided. This will reduce the arc load on the Cylinder circumference evenly distributed.
  • a particularly advantageous further embodiment of the quick-action switch consists in that a predetermined profile of the outer jacket of the contact member 2 is provided.
  • a predetermined profile of the outer jacket of the contact member 2 is provided.
  • the contact member 2 with its contact ring 27 and the contact pins 11 and 14 and part of the chamber wall 10 are indicated. Due to the different width of the gap 20 over the displacement path indicated by the directional arrow 4, the increase in voltage of the arc 34 during the movement of the contact member 2 can be set to predetermined values and, at the same time, the amount of the arc voltage can be limited. If necessary, the inner surface of the chamber wall 10 can also be provided with such a profile.
  • the chamber wall 10 can preferably also be provided with blow-out openings 36 and 37, from which separated material can be blown out by the gas pressure of the arc and jamming of the contact member 2 can be avoided.
  • a varistor 42 can be connected in parallel to the individual switching paths, one of which, for example, is formed by the two switching pins 11 and 14 and the contact ring 27 according to FIG. This allows the switching voltage and, accordingly, the arc work to be limited.
  • a commutation contact 44 may preferably also be provided, which may consist, for example, of a contact ring which is embedded in the chamber wall 10.
  • the arc 34 commutates on this commutation contact 44 as soon as the contact ring 27 with the contact member 2 is moved past.
  • the arc 34 is thus always limited to a predetermined length.

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Circuit Breakers (AREA)
  • High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Switches With Compound Operations (AREA)
  • Electrophonic Musical Instruments (AREA)
EP90105938A 1990-03-28 1990-03-28 Disjoncteur rapide Expired - Lifetime EP0450104B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE59009511T DE59009511D1 (de) 1990-03-28 1990-03-28 Schnellschalter.
AT90105938T ATE126388T1 (de) 1990-03-28 1990-03-28 Schnellschalter.
EP90105938A EP0450104B1 (fr) 1990-03-28 1990-03-28 Disjoncteur rapide

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP90105938A EP0450104B1 (fr) 1990-03-28 1990-03-28 Disjoncteur rapide

Publications (2)

Publication Number Publication Date
EP0450104A1 true EP0450104A1 (fr) 1991-10-09
EP0450104B1 EP0450104B1 (fr) 1995-08-09

Family

ID=8203831

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90105938A Expired - Lifetime EP0450104B1 (fr) 1990-03-28 1990-03-28 Disjoncteur rapide

Country Status (3)

Country Link
EP (1) EP0450104B1 (fr)
AT (1) ATE126388T1 (fr)
DE (1) DE59009511D1 (fr)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0753908A1 (fr) * 1995-07-13 1997-01-15 Societe Anonyme Dite: Carrier Kheops Bac Dispositif commutateur électrique de sécurité pour véhicule
WO2000022641A1 (fr) * 1998-10-09 2000-04-20 Siemens Aktiengesellschaft Commutateur moyenne tension
FR2790138A1 (fr) * 1999-02-24 2000-08-25 Schneider Electric Ind Sa Appareil de protection electrique tel un disjoncteur, muni d'un ecran de coupure d'arc
WO2001009908A1 (fr) * 1999-07-30 2001-02-08 W.W. Grew & Company Limited Disjoncteurs electriques
EP1612820A3 (fr) * 2004-06-30 2006-01-18 Eja Limited Améliorations concernant des contacts d'interrupteur
DE102008033804A1 (de) 2008-07-18 2010-01-21 Siemens Aktiengesellschaft Anordnung zum schnellen Schalten eines Kurzschlussstromes in einer Niederspannungsanlage
FR2953322A1 (fr) * 2009-11-27 2011-06-03 Snpe Materiaux Energetiques Interrupteur electrique formant coupe-circuit a actionnement rapide
EP2339599A1 (fr) * 2009-12-22 2011-06-29 ABB Research Ltd. Commutateur et utilisation associée
WO2012110523A1 (fr) * 2011-02-16 2012-08-23 Phoenix Contact Gmbh & Co. Kg Dispositif de séparation
EP2541570A1 (fr) * 2011-06-29 2013-01-02 Raychem International (Irish Branch) Commutateur électrique pour courants élevés, en particulier avec une performance de résistance élevée aux courts-circuits dans la plage des kA
FR2980301A1 (fr) * 2011-09-21 2013-03-22 Schneider Electric Ind Sas Court-circuiteur electrique a actionneur pyrotechnique
US20150270084A1 (en) * 2012-10-19 2015-09-24 Jan Karlsson Device for rapid short-circuiting and earthing of the phases in a power network
WO2016015719A3 (fr) * 2014-07-30 2016-04-28 Peter Lell Interrupteur électrique, en particulier pour tensions élevées et/ou courants élevés
EP2689445B1 (fr) * 2011-03-22 2017-08-30 Dehn + Söhne GmbH + Co. KG Système de commutation unipolaire ou multipolaire, destiné notamment à des applications de courant continu
US9805888B2 (en) 2014-05-19 2017-10-31 Abb Schweiz Ag High speed limiting electrical switchgear device
US20170316904A1 (en) * 2014-10-30 2017-11-02 Alstom Technology Ltd. Medium- or high-voltage circuit breaker or isolator, provided with improved fixed contacts, and method of use
CN113826183A (zh) * 2019-03-18 2021-12-21 伊顿智能动力有限公司 用于快速断开短路电流的开关装置
CN115188640A (zh) * 2022-07-27 2022-10-14 合肥开关厂有限公司 一种高速断路器涡流驱动装置

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19701311B4 (de) * 1997-01-16 2005-08-25 Moeller Gmbh Strombegrenzender Leistungsschalter
DE19757179B4 (de) * 1997-12-22 2010-06-10 Moeller Gmbh Elektrodynamisch beaufschlagbares Kontaktsystem
DE102004036279A1 (de) * 2004-07-27 2006-03-23 Siemens Ag Schaltgerät für Niederspannungsanwendungen

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR697236A (fr) * 1929-07-27 1931-01-13 Perfectionnements relatifs aux commutateurs ou aux coupe-circuits
DE675545C (de) * 1935-02-23 1939-05-11 Frida Strauss Geb Ruppel Elektrischer Schalter mit Lichtbogenloeschung durch Druckgas
CH379599A (de) * 1959-02-17 1964-07-15 Siemens Ag Starkstromschalteinrichtung für schnelles Ausschalten
US3242257A (en) * 1963-09-17 1966-03-22 Rostone Corp Arc interrupting molding composition and electrical apparatus made therefrom
DE1590296B1 (de) * 1966-04-21 1971-01-28 Driescher Spezialfab Fritz Loeschkammerschalter mit nach aussen offener Loeschkammer
EP0118333A1 (fr) * 1983-02-04 1984-09-12 Telemecanique Dispositif interrupteur muni d'un écran isolant s'interposant entre les contacts lors de la coupure et de moyens de cisaillement de l'arc entre cet écran et une paroi isolante

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR697236A (fr) * 1929-07-27 1931-01-13 Perfectionnements relatifs aux commutateurs ou aux coupe-circuits
DE675545C (de) * 1935-02-23 1939-05-11 Frida Strauss Geb Ruppel Elektrischer Schalter mit Lichtbogenloeschung durch Druckgas
CH379599A (de) * 1959-02-17 1964-07-15 Siemens Ag Starkstromschalteinrichtung für schnelles Ausschalten
US3242257A (en) * 1963-09-17 1966-03-22 Rostone Corp Arc interrupting molding composition and electrical apparatus made therefrom
DE1590296B1 (de) * 1966-04-21 1971-01-28 Driescher Spezialfab Fritz Loeschkammerschalter mit nach aussen offener Loeschkammer
EP0118333A1 (fr) * 1983-02-04 1984-09-12 Telemecanique Dispositif interrupteur muni d'un écran isolant s'interposant entre les contacts lors de la coupure et de moyens de cisaillement de l'arc entre cet écran et une paroi isolante

Cited By (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0753908A1 (fr) * 1995-07-13 1997-01-15 Societe Anonyme Dite: Carrier Kheops Bac Dispositif commutateur électrique de sécurité pour véhicule
FR2736760A1 (fr) * 1995-07-13 1997-01-17 Carrier Kheops Bac Dispositif commutateur electrique de securite pour vehicule
WO2000022641A1 (fr) * 1998-10-09 2000-04-20 Siemens Aktiengesellschaft Commutateur moyenne tension
FR2790138A1 (fr) * 1999-02-24 2000-08-25 Schneider Electric Ind Sa Appareil de protection electrique tel un disjoncteur, muni d'un ecran de coupure d'arc
WO2001009908A1 (fr) * 1999-07-30 2001-02-08 W.W. Grew & Company Limited Disjoncteurs electriques
EP1612820A3 (fr) * 2004-06-30 2006-01-18 Eja Limited Améliorations concernant des contacts d'interrupteur
DE102008033804A1 (de) 2008-07-18 2010-01-21 Siemens Aktiengesellschaft Anordnung zum schnellen Schalten eines Kurzschlussstromes in einer Niederspannungsanlage
FR2953322A1 (fr) * 2009-11-27 2011-06-03 Snpe Materiaux Energetiques Interrupteur electrique formant coupe-circuit a actionnement rapide
EP2339599A1 (fr) * 2009-12-22 2011-06-29 ABB Research Ltd. Commutateur et utilisation associée
CN103392215A (zh) * 2011-02-16 2013-11-13 菲尼克斯电气有限两合公司 隔离装置
WO2012110523A1 (fr) * 2011-02-16 2012-08-23 Phoenix Contact Gmbh & Co. Kg Dispositif de séparation
CN103392215B (zh) * 2011-02-16 2015-08-12 菲尼克斯电气有限两合公司 隔离装置
EP2689445B1 (fr) * 2011-03-22 2017-08-30 Dehn + Söhne GmbH + Co. KG Système de commutation unipolaire ou multipolaire, destiné notamment à des applications de courant continu
EP2541570A1 (fr) * 2011-06-29 2013-01-02 Raychem International (Irish Branch) Commutateur électrique pour courants élevés, en particulier avec une performance de résistance élevée aux courts-circuits dans la plage des kA
WO2013001039A1 (fr) 2011-06-29 2013-01-03 Tyco Electronics Uk Ltd. Interrupteur électrique pour courants forts, présentant en particulier de hautes performances de résistance aux courts-circuits dans la gamme des ka
US9673003B2 (en) 2011-06-29 2017-06-06 Raychem International Electric switch for high currents, in particular with a high short circuit withstand performance in the KA-range
FR2980301A1 (fr) * 2011-09-21 2013-03-22 Schneider Electric Ind Sas Court-circuiteur electrique a actionneur pyrotechnique
EP2573785A1 (fr) * 2011-09-21 2013-03-27 Schneider Electric Industries SAS Court-circuiteur électrique triphasé à actionneur pyrotechnique
US20150270084A1 (en) * 2012-10-19 2015-09-24 Jan Karlsson Device for rapid short-circuiting and earthing of the phases in a power network
US9318294B2 (en) * 2012-10-19 2016-04-19 Jan Karlsson Device for rapid short-circuiting and earthing of the phases in a power network
US9805888B2 (en) 2014-05-19 2017-10-31 Abb Schweiz Ag High speed limiting electrical switchgear device
WO2016015719A3 (fr) * 2014-07-30 2016-04-28 Peter Lell Interrupteur électrique, en particulier pour tensions élevées et/ou courants élevés
US10236148B2 (en) 2014-07-30 2019-03-19 Peter Lell Electric switch, in particular for high voltages and/or high currents
US20170316904A1 (en) * 2014-10-30 2017-11-02 Alstom Technology Ltd. Medium- or high-voltage circuit breaker or isolator, provided with improved fixed contacts, and method of use
JP2017539049A (ja) * 2014-10-30 2017-12-28 アルストーム・テクノロジー・リミテッド 改良型固定接触子を備えた中間又は高電圧回路遮断器又は断路器及びその使用方法
US10056209B2 (en) * 2014-10-30 2018-08-21 Alstom Technology Ltd Medium- or high-voltage circuit breaker or isolator, provided with improved fixed contacts, and method of use
CN113826183A (zh) * 2019-03-18 2021-12-21 伊顿智能动力有限公司 用于快速断开短路电流的开关装置
CN113826183B (zh) * 2019-03-18 2023-11-07 伊顿智能动力有限公司 用于快速断开短路电流的开关装置
US11875959B2 (en) 2019-03-18 2024-01-16 Eaton Intelligent Power Limited Switching device for fast disconnection of short-circuit currents
CN115188640A (zh) * 2022-07-27 2022-10-14 合肥开关厂有限公司 一种高速断路器涡流驱动装置

Also Published As

Publication number Publication date
ATE126388T1 (de) 1995-08-15
DE59009511D1 (de) 1995-09-14
EP0450104B1 (fr) 1995-08-09

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