EP2015331A2 - Antriebsvorrichtung für einer Vakuumlastschalter mit Vorrichtung zum Vermeiden von Kontaktschwingungen - Google Patents

Antriebsvorrichtung für einer Vakuumlastschalter mit Vorrichtung zum Vermeiden von Kontaktschwingungen Download PDF

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Publication number
EP2015331A2
EP2015331A2 EP08380201A EP08380201A EP2015331A2 EP 2015331 A2 EP2015331 A2 EP 2015331A2 EP 08380201 A EP08380201 A EP 08380201A EP 08380201 A EP08380201 A EP 08380201A EP 2015331 A2 EP2015331 A2 EP 2015331A2
Authority
EP
European Patent Office
Prior art keywords
break
locking
vacuum switch
connection module
module according
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.)
Withdrawn
Application number
EP08380201A
Other languages
English (en)
French (fr)
Other versions
EP2015331A3 (de
Inventor
Ricardo Hernani Perez
Alberto Lorenzo Michelena
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.)
Ormazabal Distribucion Primaria SA
Original Assignee
Ormazabal Distribucion Primaria 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
Application filed by Ormazabal Distribucion Primaria SA filed Critical Ormazabal Distribucion Primaria SA
Publication of EP2015331A2 publication Critical patent/EP2015331A2/de
Publication of EP2015331A3 publication Critical patent/EP2015331A3/de
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/666—Operating arrangements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/50—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position
    • 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
    • H01H3/30—Power arrangements internal to the switch for operating the driving mechanism using spring motor
    • H01H3/3005—Charging means
    • H01H3/3015—Charging means using cam devices
    • 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
    • H01H3/30—Power arrangements internal to the switch for operating the driving mechanism using spring motor
    • H01H3/3031—Means for locking the spring in a charged state
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/022—Details particular to three-phase circuit breakers

Definitions

  • the present invention relates to a break and connection module applied in high voltage switchgear having an application in the electric industry, comprising a multi-pole vacuum switch as well as an operating mechanism in turn comprising a locking device configured to prevent the occurrence of a backward or rebound movement of a mobile contact of the vacuum switch after the break and/or connection operations, preventing the creation of an electric arc between the contacts of the switch, with the subsequent increase in the safety of the switch, all with a small number of elements.
  • the switchgear comprised by the high voltage network is usually installed in prefabricated equipment commonly referred to as cells, which are factory-tested.
  • said cells comprise different compartments, such as a bar compartment, a switch compartment, a connections compartment and a low voltage compartment.
  • the switch compartment requires the use of an insulating medium, which is usually air or another gaseous medium, such as for example sulfur hexafluoride (SF 6 ), dry air, nitrogen, etc., for the purpose of reducing the distance between phases and thus obtaining a compact enclosure that is invariable to external or environmental conditions such as pollution or moisture.
  • an insulating medium which is usually air or another gaseous medium, such as for example sulfur hexafluoride (SF 6 ), dry air, nitrogen, etc.
  • the switch compartment comprises operating elements such as a sectionalizer or a grounding sectionalizer and a switch, respectively, for the aforementioned functions.
  • the switch can consist both of an automatic switch and a load-break switch.
  • the switch compartment also comprises a coupling device for each of the aforementioned operating elements provided. Specifically, the coupling device is joined to a mobile contact of the operating element.
  • the coupling device transmits in a gas-tight manner the actuating force produced by the individual operating mechanism of each operating element by means of a bellows.
  • the operating mechanisms produce the actuating force for carrying out the sectionalization/sectionalization and grounding functions, as well as the break and connection functions.
  • European patents EP 1251614 and EP 564057 describe operating mechanisms forming part of the assembly of elements comprised by the switch compartment, this assembly of elements being more compact, allowing its installation in the switch compartment as a unit.
  • the previously discussed modules can comprise a single operating element, such as for example an automatic or load-break switch and its coupling device and its corresponding operating mechanism.
  • This solution is described, for example, in European patent application EP 1156565 , in patent application US 2002067230 , in patent US 5864108 , in patent US 5055640 or in European patent EP 1496585 .
  • sectionalization/sectionalization and grounding functions are carried out by an operating element which is external or remote to the module, such as for example a sectionalizer or a grounding sectionalizer, said operating element being connected to the switch module by means of a flexible or rigid connection linking the mobile contact of the automatic or load-break switch with said sectionalizer or grounding sectionalizer.
  • an operating element which is external or remote to the module, such as for example a sectionalizer or a grounding sectionalizer, said operating element being connected to the switch module by means of a flexible or rigid connection linking the mobile contact of the automatic or load-break switch with said sectionalizer or grounding sectionalizer.
  • European patent application EP 1453164 and European patent EP 543352 describe extractable modules which only comprise a single operating element, with its corresponding operating mechanism and coupling device, wherein said operating element performs the break and connection functions, whereas the sectionalization/sectionalization and grounding functions are performed by means of extracting said module from the switch compartment.
  • the compartments in which these modules are located are obviously not tight, and the only insulation medium that can be used is air, which implies several drawbacks with regard to another type of insulating medium.
  • the operating mechanism produces the actuating force, which is transmitted to the mobile contact of the operating element by means of the coupling device, such that the movement of the mobile contact causes its connection, or its disconnection, with the fixed contact of the operating element.
  • the current in an electric circuit is cut-off or restored, said intervention or operation being able to be deliberate or voluntary, such as in the event that it is restored by an operator, or it can occur as a result of the action of a device sensitive to certain current values, which causes a direct or indirect order to open the circuit.
  • the switch In the break or open position, the switch must maintain or support the insulation between two parts of the circuit, whereas in the connection or closed position, the switch must permanently conduct nominal currents as well as support during a certain time accidental or abnormal situations, such as overloads or short-circuits.
  • the break time is fundamental, given that during the passage from the contact to the final separation situation, the contacts pass through a range of distances in which the electric arc may occur, and for this reason said passage must be as quick as possible, i.e., the break time is minimum, for the purpose of minimizing said risk.
  • a vacuum is normally used as a dielectric means for performing the break and connection operations of the contacts of the switch.
  • the poles of the vacuum switch are arranged in a casing or enclosure, or in independent enclosures, for the purpose of reducing the distances between phases and preventing the risk that an electric arc occurs between live parts.
  • the vacuum switch is integrated inside the switch compartment, which contains an insulating gas favoring the reduction of distances between the live parts and aids in dissipating heat.
  • the present invention relates to a break and connection module applied in high voltage switchgear, and particularly incorporated in a compartment of a cell, for example in the switch compartment, this compartment being able to be tight, and therefore insulated in a gas, in this case a being break and connection module that cannot be extracted from said compartment.
  • Said break and connection module comprises an operating mechanism in turn comprising a locking device preventing a backward or rebound movement of a mobile contact of a vacuum switch from occurring after performing break and/or connection operations, preventing the creation of an electric arc between the contacts of the switch.
  • the break and connection module comprises a multi-pole vacuum switch, preferably with its longitudinal shafts arranged horizontally, comprising a fixed contact and a mobile contact.
  • the module also comprises an operating mechanism common to all the poles of the vacuum switch, said operating mechanism being able to be manually or automatically operated or motor-driven.
  • the module comprises a base which is configured to support and fix the vacuum switch and the operating mechanism, which are separated by a wall comprised by said base and which separates the poles of the vacuum switch and the operating mechanism.
  • the module comprises a coupling device for each pole of the vacuum switch, which transmits in a gas-tight manner by means of a transmitting means, which can consist of a bellows, an actuating force from the operating mechanism to the mobile contact of the vacuum switch.
  • the operating mechanism which applies both for load-break switches and for automatic switches, comprises a locking device which is configured to prevent a rebound effect of the mobile contact after performing break and/or connection operations of said vacuum switch.
  • the locking device comprises at least one plate, configured to rotate in relation to a rotation shaft, said plate being joined to the coupling device.
  • Said locking device also comprises a locking shaft comprising a plurality of teeth arranged according to longitudinal rows, i.e., parallel to the actual locking shaft, said locking shaft being joined to the plate.
  • the locking device also comprises a locking sleeve comprising a plurality of complementary teeth located in an inner part of said locking sleeve and arranged according to longitudinal rows, said locking sleeve being traversed by the locking shaft.
  • longitudinal grooves Arranged between the rows of teeth there are defined longitudinal grooves which, depending on the position of the locking shaft in relation to the locking sleeve, allow the complementary teeth to mesh, be housed in or match up with the teeth of the locking shaft, locking axial movement. In the event that the complementary teeth are housed in the longitudinal grooves of the locking shaft, said axial sliding of the locking shaft in relation to the locking sleeve is allowed.
  • the locking device comprises an adjustable nut which is threaded in the locking shaft, an opening stop which is traversed by the locking shaft and is fixed to a casing, preferably made of aluminum, which encloses and protects the operating mechanism, a support which is fixed to the casing and traversed by the locking sleeve, two axial bushings, located on each side of the support, which are traversed by the locking sleeve, a connecting rod which is fixed and traversed by the locking sleeve, with which it is integral, for example, by means of a key which is fitted in a groove that said locking sleeve may be provided with longitudinally.
  • the locking device described in the preceding paragraph also comprises at least two lock washers and at least two lock nuts which are threaded in the locking sleeve and which are configured to adjust the axial bushings, the connecting rod and the lock washers against the support, a release mechanism and a latch spring which are joined to the connecting rod, a release stop which is joined to the support, and a stop screw which is joined to the connecting rod.
  • the release mechanism is configured to rotate the connecting rod, said rotation being limited by the release stop and the stop screw, said rotation of the connecting rod being configured to cause a rotation of the locking sleeve such that its complementary teeth do not match up, i.e., do not contact, the teeth of the locking shaft, allowing an axial movement of the locking shaft caused by the action of a cam on the plate, transmitting a movement to the coupling device and to the mobile contact.
  • the cam is configured to act on or to continue pushing the plate, allowing the axial movement of the locking shaft to continue until the complementary teeth of the locking sleeve mesh with, are housed in or match up with the teeth of said locking shaft, the mobile contact being locked in a connection position, the latch spring being configured to cause a rotational movement of the locking sleeve.
  • the operating mechanism acts on the cam, which acts on the plate, which in turn moves a rod causing the movement of the coupling device, which in turn acts on the mobile contact until it contacts the fixed contact, whereby closing the circuit.
  • the coupling device does not act directly on the mobile contact, but rather on the opening springs which are joined to the mobile contact, such that once the mobile contact closes the circuit by means of its contact with the fixed contact, the coupling device continues its movement or actuation against the opening spring, causing its compression. Without said additional travel, a small backward movement of the mobile contact in relation to the fixed contact will occur.
  • the operating mechanism acts on the release mechanism, which causes the rotation of the connecting rod, which in turn causes the rotation of the locking sleeve, causing the complementary teeth to come out of mesh with or dislodge from the teeth of the locking shaft.
  • the locking shaft is joined to the plate, such that said plate is only allowed rotational movement as a result of the actuation of the cam when the locking shaft is released, i.e., when the complementary teeth of the locking sleeve are not in contact, meshed, with the teeth of the locking shaft. Therefore, the locking shaft can be released and the mobile contact of the switch moved simultaneously by means of the actuation of the operating mechanism.
  • the connecting rod receives at all times the action of a latch spring which tends to cause a rotational movement of the locking sleeve in relation to the locking shaft.
  • the operating mechanism acts on the release mechanism in the moment in which the connection operation begins, but it does not immediately release it, such that the latch spring makes the locking sleeve rotate so that its complementary teeth are in a meshing or matching position with the teeth of the locking shaft.
  • the release mechanism is configured to rotate the connecting rod, said rotation being limited by the release stop and the stop screw, said rotation of the connecting rod being configured to cause a rotation of the locking sleeve such that its complementary teeth do not match up with the teeth of the locking shaft.
  • the complementary teeth match up with the teeth of the locking shaft, the mobile contact being locked in a break position.
  • the operating mechanism acts on the release mechanism, causing the rotation of the connecting rod and therefore the freeing, release or coming out of mesh between the teeth of the locking shaft and the complementary teeth of the locking sleeve.
  • a loss of force or decompression in the opening spring of the mobile contact causes a movement of the locking shaft because it is not in a locking position.
  • the effect of the latch spring causes a rotational movement of the locking sleeve in relation to the locking shaft, whereby said locking shaft is again in a locking position in relation to the locking sleeve.
  • the base comprises an enclosure incorporating, supporting or containing the poles of the vacuum switch is contemplated.
  • each pole of the vacuum switch is incorporated in an independent enclosure comprised by the base.
  • said at least one enclosure is made of polymer material, and preferably epoxy resin.
  • the base comprises a joining element between the wall and at least one enclosure.
  • the service element preferably consists of a rigid connection and the output element consists of a flexible connection.
  • one of the possible embodiments of the invention relates to a break and connection module (1) applied in high voltage switchgear, configured to be incorporated in a switch compartment, said compartment being tight, and therefore insulated in a gas, whereby according to a preferred embodiment the break and connection module (1) is not extractable from said switch compartment.
  • the break and connection module (1) comprises a three-pole vacuum switch (2), with its longitudinal shafts arranged horizontally, comprising a fixed contact (9) and a mobile contact (10), in which the fixed contact (9) is joined to a service element (14), consisting of a rigid connection, and the mobile contact (10) is joined to an output element (15), consisting of a flexible connection.
  • the break and connection module (1) also comprises an operating mechanism (3) common to the three poles of the vacuum switch (2), said operating mechanism (3) being motor-driven and/or manually actuated.
  • the break and connection module (1) comprises a base (4) which is configured to support and fix the vacuum switch (2) and the operating mechanism (3), which are separated by a wall (5) comprised by said base (4) and which separates the poles of the vacuum switch (2) and the operating mechanism (3).
  • Each pole of the vacuum switch (2) is incorporated in an independent enclosure (6) made of epoxy resin comprised by the base (4).
  • the base (4) comprises a joining element (7) between the wall (5) and at least one enclosure (6).
  • the module (1) of the invention comprises a coupling device (16) for each pole of the vacuum switch (2), which transmits in a gas-tight manner by means of a transmitting means (17), which consists of a bellows, an actuating force from the operating mechanism (3) to the mobile contact (10) of the vacuum switch (2).
  • the operating mechanism (3) which is applied for both load-break switches and automatic switches, comprises a locking device (8), depicted in Figures 3 and 4 , which is configured to prevent a rebound effect of the mobile contact (10) after performing break and/or connection operations of said vacuum switch (2).
  • the locking device (8) comprises a plate (11), configured to rotate in relation to a rotation shaft (12), said plate (11) being joined to the coupling device (16).
  • the locking device (8) also comprises a locking shaft (18) comprising a plurality of teeth (34) arranged according to longitudinal rows, parallel to the locking shaft (18) itself, said locking shaft (18) being joined to the plate (11).
  • the locking device (8) also comprises a locking sleeve (19), comprising a plurality of complementary teeth (33) located in an inner part of said locking sleeve (19) arranged according to longitudinal rows, said locking sleeve (19) being traversed by the locking shaft (18), as depicted in Figure 5 .
  • the locking device (8) comprises an adjustable nut (24) which is threaded in the locking shaft (18), an opening stop (23) which is traversed by the locking shaft (18) and is fixed to a casing (13) made of aluminum, enclosing and protecting the operating mechanism (3), a support (22) which is fixed to the casing (13) and traversed by the locking sleeve (19), two axial bushings (28, 28'), located on each side of the support (22), which are traversed by the locking sleeve (19), a connecting rod (27) which is fixed and traversed by the locking sleeve (19), with which it is integral by means of a key (31) which is fitted in a groove (32) that said locking sleeve (19) longitudinally has.
  • the locking device (8) also comprises two lock washers (21, 21') and two lock nuts (20, 20') which are threaded in the locking sleeve (19) and which are configured to adjust the axial bushings (28, 28'), the connecting rod (27) and the lock washers (21, 21') against the support (22), a release mechanism (29) and a latch spring (26) which are joined to the connecting rod (27), a release stop (25) which is joined to the support (22), and a stop screw (30) which is joined to the connecting rod (27).
  • the release mechanism (29) is configured to rotate the connecting rod (27), said rotation being limited by the release stop (25) and the stop screw (30), said rotation of the connecting rod (27) being configured to cause a rotation of the locking sleeve (19), such that its complementary teeth (33) do not match up with the teeth (34) of the locking shaft (18), allowing an axial movement of the locking shaft (18) caused by the action of a cam (35) on the plate (11), transmitting a movement to the coupling device (16) and to the mobile contact (10).
  • the cam (35) is configured to continue acting on the plate (11), allowing the axial movement of the locking shaft (18) to continue until the complementary teeth (33) of the locking sleeve (19) mesh with the teeth (34) of said locking shaft (18), the mobile contact (10) being locked in a connection position, the latch spring (26) being configured to cause a rotational movement of the locking sleeve (19).
  • the operating mechanism (3) acts on the cam (35), which acts on the plate (11), which in turn moves a rod causing the movement of the coupling device (16), which in turn acts on the mobile contact (10) until it contacts the fixed contact (9), whereby closing the circuit.
  • the release mechanism (29) is configured to rotate the connecting rod (27), said rotation being limited by the release stop (25) and the stop screw (30), said rotation of the connecting rod (27) being configured to cause a rotation of the locking sleeve (19), such that its complementary teeth (33) do not match up with the teeth (34) of the locking shaft (18).

Landscapes

  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
EP08380201A 2007-07-09 2008-07-07 Antriebsvorrichtung für einer Vakuumlastschalter mit Vorrichtung zum Vermeiden von Kontaktschwingungen Withdrawn EP2015331A3 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES200701923A ES2343495B2 (es) 2007-07-09 2007-07-09 Modulo de corte y conexion.

Publications (2)

Publication Number Publication Date
EP2015331A2 true EP2015331A2 (de) 2009-01-14
EP2015331A3 EP2015331A3 (de) 2012-12-05

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP08380201A Withdrawn EP2015331A3 (de) 2007-07-09 2008-07-07 Antriebsvorrichtung für einer Vakuumlastschalter mit Vorrichtung zum Vermeiden von Kontaktschwingungen

Country Status (2)

Country Link
EP (1) EP2015331A3 (de)
ES (1) ES2343495B2 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102332365A (zh) * 2011-09-27 2012-01-25 浙江华仪电器科技有限公司 一种真空断路器隔离设备及其防误操作方法
EP2228810A3 (de) * 2009-03-11 2014-01-08 LS Industrial Systems Co., Ltd Leistungsschalter mit Vorrichtung zur Verhinderung eines Rückschlags
US12431311B2 (en) 2022-06-15 2025-09-30 Hitachi Energy Ltd Anti-rebound protection device and circuit breaker comprising the same

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5055640A (en) 1989-03-16 1991-10-08 Sprecher Energie Ag Multi-pin vacuum switch arrangement
EP0543352A1 (de) 1991-11-18 1993-05-26 Hitachi, Ltd. Schaltfeld
EP0564057A1 (de) 1992-03-31 1993-10-06 Siemens Aktiengesellschaft Gasisolierte Schaltanlage mit einem Vakuumschalter
US5864108A (en) 1994-05-30 1999-01-26 Siemens Aktiengesellschaft Vacuum switch assembly including housing insulating support
EP1156565A2 (de) 2000-05-17 2001-11-21 Felten & Guilleaume AG Gasisolierte Schaltanlage mit Vakkuumschaltern
US20020067230A1 (en) 2000-12-04 2002-06-06 Yoon Seok Jung Vacuum circuit breaker
EP1251614A2 (de) 2001-04-20 2002-10-23 Felten & Guilleaume AG Selbsttragende Baugruppe für ein Leistungsschaltfeld
EP1453164A1 (de) 2001-12-07 2004-09-01 Mitsubishi Denki Kabushiki Kaisha Schaltvorrichtung und mehrschichtige schaltvorrichtung
EP1496585A1 (de) 2002-04-12 2005-01-12 Mitsubishi Denki Kabushiki Kaisha Verteiler des metall-geschlossen-typs

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GB1384699A (en) * 1971-10-15 1975-02-19 Ass Elect Ind Energy store actuators
US3787649A (en) * 1972-08-04 1974-01-22 Allis Chalmers Vacuum switch cam operating mechanism with contact loading compression spring
US4124790A (en) * 1975-03-06 1978-11-07 Mcgraw-Edison Company Protective switch device and operating mechanism therefor
US4064383A (en) * 1976-04-26 1977-12-20 General Electric Company Vacuum circuit breaker with improved means for limiting overtravel of movable contact at end of opening stroke
ZA771385B (en) * 1976-04-28 1978-01-25 Westinghouse Electric Corp An improvement in or relating to vacuum circuit breaker apparatus having elongated support members
CN2840306Y (zh) * 2005-11-16 2006-11-22 河南森源电气股份有限公司 一种户内高压真空断路器离合机构

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5055640A (en) 1989-03-16 1991-10-08 Sprecher Energie Ag Multi-pin vacuum switch arrangement
EP0543352A1 (de) 1991-11-18 1993-05-26 Hitachi, Ltd. Schaltfeld
EP0564057A1 (de) 1992-03-31 1993-10-06 Siemens Aktiengesellschaft Gasisolierte Schaltanlage mit einem Vakuumschalter
US5864108A (en) 1994-05-30 1999-01-26 Siemens Aktiengesellschaft Vacuum switch assembly including housing insulating support
EP1156565A2 (de) 2000-05-17 2001-11-21 Felten & Guilleaume AG Gasisolierte Schaltanlage mit Vakkuumschaltern
US20020067230A1 (en) 2000-12-04 2002-06-06 Yoon Seok Jung Vacuum circuit breaker
EP1251614A2 (de) 2001-04-20 2002-10-23 Felten & Guilleaume AG Selbsttragende Baugruppe für ein Leistungsschaltfeld
EP1453164A1 (de) 2001-12-07 2004-09-01 Mitsubishi Denki Kabushiki Kaisha Schaltvorrichtung und mehrschichtige schaltvorrichtung
EP1496585A1 (de) 2002-04-12 2005-01-12 Mitsubishi Denki Kabushiki Kaisha Verteiler des metall-geschlossen-typs

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2228810A3 (de) * 2009-03-11 2014-01-08 LS Industrial Systems Co., Ltd Leistungsschalter mit Vorrichtung zur Verhinderung eines Rückschlags
CN102332365A (zh) * 2011-09-27 2012-01-25 浙江华仪电器科技有限公司 一种真空断路器隔离设备及其防误操作方法
US12431311B2 (en) 2022-06-15 2025-09-30 Hitachi Energy Ltd Anti-rebound protection device and circuit breaker comprising the same

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Publication number Publication date
ES2343495A1 (es) 2010-08-02
EP2015331A3 (de) 2012-12-05
ES2343495B2 (es) 2011-05-30

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