EP3799088B1 - Dispositif d'indication du commutateur de transfert automatique à double alimentation et du commutateur de transfert automatique à double alimentation - Google Patents

Dispositif d'indication du commutateur de transfert automatique à double alimentation et du commutateur de transfert automatique à double alimentation Download PDF

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Publication number
EP3799088B1
EP3799088B1 EP20306129.6A EP20306129A EP3799088B1 EP 3799088 B1 EP3799088 B1 EP 3799088B1 EP 20306129 A EP20306129 A EP 20306129A EP 3799088 B1 EP3799088 B1 EP 3799088B1
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EP
European Patent Office
Prior art keywords
indicating
power supply
switch
rod
micro switch
Prior art date
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Active
Application number
EP20306129.6A
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German (de)
English (en)
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EP3799088A1 (fr
EP3799088A9 (fr
Inventor
Xiaojing ZENG
Han Wang
Qian MA
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Schneider Electric Industries SAS
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Schneider Electric Industries SAS
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Publication of EP3799088A1 publication Critical patent/EP3799088A1/fr
Publication of EP3799088A9 publication Critical patent/EP3799088A9/fr
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Publication of EP3799088B1 publication Critical patent/EP3799088B1/fr
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    • 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
    • H01H9/16—Indicators for switching condition, e.g. "on" or "off"
    • H01H9/165—Indicators for switching condition, e.g. "on" or "off" comprising numbered dials
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2300/00—Orthogonal indexing scheme relating to electric switches, relays, selectors or emergency protective devices covered by H01H
    • H01H2300/018—Application transfer; between utility and emergency power supply

Definitions

  • the present disclosure relates to an indicating device for a dual-power automatic transfer switch and a dual-power automatic transfer switch including the same indicating device.
  • An indicating device of ATSE is a safety-related functional module, which indicates to the user the current opening and closing state of contacts of ATSE, such as being closed to the first power supply (S1 ON) or closed to the second power supply (S2 ON) or being disconnected from the first power supply and the second power supply (OFF).
  • ATSE has isolation function, users can padlock at OFF position to ensure the isolation between power supply and load terminal, and let maintenance personnel safely maintain load terminal equipment.
  • the contacts are not rigidly connected with the mechanism drive, which leads to incorrect indication when the indicator is connected with the mechanism drive instead of the contacts rigidly.
  • the driving of the mechanism has reached the OFF position, which is dangerous.
  • mechanical indicators provide mechanical indication of contact position, then mechanical indicators provide electrical indication of contact position, so their correct design is also very critical.
  • CN 209 071 158 U discloses an indicating device in accordance with the preamble of claim 1.
  • CN 208 142 045 U provides a switching mechanism that includes switching components for a dual power transfer switch switching components such as a driving disc, an actuating lever, an actuating mechanism and a complementary unit.
  • the driving disc has a curved drive groove, and the actuating lever extends to in the drive groove.
  • a dual power transfer switch including this kind of switching mechanism is disclosed.
  • an indicating device of a dual-power automatic transfer switch according to claim 1.
  • the indicating device comprises a mechanical indicating device and an electrical indicating device; and an indicating part acting on the mechanical indicating device and the electrical indicating device.
  • the first driving component and the second driving component respectively drive the indicating part to move.
  • the movement of the indicating part drives the mechanical indicating device to move to a position where the first power supply is switched on, a position where the second power supply is switched on and a position where both the first power supply and the second power supply are switched off.
  • the movement of the indicating part correspondingly actuates the electrical indicating device to indicate a switch on signal of the first power supply, a switch on signal of the second power supply and a switch off signal of the first power supply and the second power supply.
  • the indicating member is an indicating rod.
  • a first end of the indicating rod is provided with an indicating rod groove.
  • a mechanical swing rod arranged on the mechanical indicating device can slide in the indicating rod groove.
  • the indicating rod groove actuates the mechanical swing rod, so that the mechanical indicating device rotates around a rotating center arranged on the housing of the dual-power automatic transfer switch to a position indicating that the first power supply is switched on, a position indicating that the second power supply is switched on and a position indicating that both the first power supply and the second power supply are switched off.
  • an indicating rod pressing plate is provided on a second end of the indicating rod.
  • the indicating rod pressing plate comprises a pressing plate opening.
  • the electric indicating device comprises a first micro switch and a second micro switch.
  • both the first micro switch and the second micro switch provide a switch off signal.
  • the first micro switch When the indicating rod pressing plate presses the first micro switch and the second micro switch is at the pressing plate opening, the first micro switch provides the switch off signal of the first power supply and the second micro switch provides the switch on signal of the second power supply.
  • the second micro switch When the indicating rod pressing plate presses the second micro switch and the first micro switch is at the pressing plate opening, the second micro switch provides the switch off signal of the second power supply, and the first micro switch provides the switch on signal of the first power supply.
  • an indicating rod matching part is provided between the first end and the second end of the indicating rod.
  • the indicating rod matching part comprises a first indicating rod joint part and a second indicating rod joint part.
  • the first indicating rod joint part engages with the first driving component, and the movement of the first driving component actuates the first indicating rod joint part so as to drive the indicating rod to move.
  • the second indicating rod joint part engages with the second driving component, and the movement of the second driving component actuates second indicating rod joint part so as to drive the indicating rod to move.
  • the first indicating rod joint part is a first protrusion which is engaged with a first groove arranged on the first driving component, and the movement of the first groove actuates the first protrusion so as to drive the indicating rod to move.
  • the second indicating rod joint part is a second protrusion which is engaged with a second groove arranged on the second driving component, and the movement of the second groove actuates the second protrusion so as to drive the indicating rod to move.
  • the indicating device further comprises a reset spring.
  • One end of the reset spring is installed on a housing of the dual-power automatic transfer switch.
  • the other end of the reset spring acts on the indicating rod, and the reset spring exerts its elastic force on the indicating rod in the direction of switching on the first power supply.
  • the first driving component connected to the moving contact of the first power supply directly drives the indicating rod to move to the right to switch on, but the indicating rod does not move to the rightmost end because the switch-on is not in place, and the electrical indicating device may not be completely released (the indicating rod pressing plate still presses the first micros witch), resulting in the switch off signal of the first power supply still being indicated.
  • the indicator rod is returned to a position where the first power supply is switched on (the indicating rod pressing plate will not press the first micro switch, that is, the first micro switch is completely in the pressing plate opening).
  • the indicating rod matching part is a U-shaped groove.
  • the first driving component and the second driving component are respectively engaged with the first protrusion and the second protrusion in the U-shaped groove.
  • the first micro switch and the second micro switch are stacked on top of each other.
  • the pressing plate openings are arranged to be staggered along the moving direction of the indicating rod and respectively correspond to the first micro switch and the second micro switch.
  • the rigid connection between the indicating device and the moving contact is realized, thus avoiding the situation of incorrect indication.
  • the situation of incorrect indication is avoided.
  • a dual-power automatic transfer switch which is characterized in that the dual-power automatic transfer switch comprises the indicating device as described above.
  • Figs. 1 and 2 show an assembled perspective view and an exploded perspective view, respectively, of a dual-power automatic transfer switch including a housing and an indicating device, which includes a first driving component 1 connected to a first moving contact of a first power supply and a second driving component 2 connected to a second moving contact of a second power supply.
  • the indicating device comprises a mechanical indicating device 3 and an electrical indicating device 4 (see fig. 2 ), and an indicating part 5 acting on the mechanical indicating device 3 and the electrical indicating device 4.
  • the first driving component 1 and the second driving component 2 respectively drive the indicating part to move.
  • the movement of the indicating part 5 drives the mechanical indicating device 3 to move to a position for indicating the first power supply to switch on (as shown in fig. 6 ), a position for indicating the second power supply to switch on (as shown in fig. 8 ) and a position for indicating that both the first power supply and the second power supply are switched off (as shown in fig. 7 ).
  • the movement of the indicating part 5 correspondingly actuates the electrical indicating device 4 to indicate the switching on signal of the first power supply, the switching on signal of the second power supply and the switching off signal of the first power supply and the second power supply.
  • the indicating part 5 is an indicating rod 6.
  • a first end 6-1 of the indicating rod 6 is provided with an indicating rod groove 6-1-1.
  • a mechanical swinging rod 3-1 arranged on the mechanical indicating device 3 can slide in the indicating rod groove 6-1-1.
  • the indicating rod groove 6-1-1 actuates the mechanical swing rod 3-1, so that the mechanical indicating device 3 rotates around the rotation center provided on a housing 7 of the dual-power automatic transfer switch to the position indicating that the first power supply is switched on (as shown in fig. 6 ), the position indicating that the second power supply is switched on (as shown in fig. 8 ) and the position indicating that the first and second power supply are all switched off (as shown in fig. 7 )
  • an indicating rod pressing plate 6-2-1 (as shown by the hatching in figs. 4 to 5 ) is provided on the second end 6-2 of the indicating rod 6.
  • the indicating rod pressing plate 6-2-1 includes a pressing plate opening 6-2-1-1 (as shown in figs. 6 and 8 ).
  • the electric indicating device 4 includes a first micro switch 4-1 and a second micro switch 4-2 (as shown in fig. 3 ).
  • both the first micro switch 4-1 and the second micro switch 4-2 provide switch off signals.
  • the first micro switch 4-1 When the indicating rod pressing plate 6-2-1 presses the first micros witch 4-1 and the second micro switch 4-2 is located at the pressing plate opening 6-2-1-1, the first micro switch 4-1 provides a switching-off signal of the first power supply and the second micro switch 4-2 provides a switching-on signal of the second power supply.
  • the second micro switch 4-2 When the indicating rod pressing plate 6-2-1 presses the second micro switch 4-2 and the first micro switch 4-1 is located at the pressure plate opening 6-2-1-1, the second micro switch 4-2 provides a switch-off signal of the second power supply and the first micro switch 4-1 provides a switch-on signal of the first power supply.
  • an indicating rod matching part 6-3 is provided between the first end 6-1 and the second end 6-2 of the indicating rod 6.
  • the indicating rod matching part 6-3 includes a first indicating rod joint part and a second indicating rod joint part.
  • the first indicating rod joint part engages with the first driving component 1 and the movement of the first driving component 1 actuates the first joint part to drive the indicating rod to move.
  • the second indicating rod joint part engages with the second driving component 2 and the movement of the second driving component 2 actuates the second joint part to drive the indicating rod to move.
  • the first indicating rod joint part is a first protrusion 6-3-1 (as shown in fig. 3 ), which is engaged with a first groove 1-1 provided on the first driving component 1 and the movement of the first groove 1-1 actuates the first protrusion 6-3-1 so as to drive the movement of the indicating rod 6.
  • the second indicating rod joint part is a second protrusion 6-3-2 (as shown in fig. 3 ), which is engaged with a second groove 2-1 provided on the second driving component 2 and the movement of the second groove 2-1 actuates the second protrusion 6-3-2 so as to drive the movement of the indicating rod 6.
  • the indicating device further includes a reset spring 8.
  • One end 8-1 of the reset spring 8 is mounted on the housing 7 of the dual-power automatic transfer switch.
  • the other end 8-2 of the reset spring 8 acts on the indicating rod 6, and the reset spring 8 exerts its elastic force on the indicating rod 6 in the direction of switching on the first power supply.
  • the first driving component 1 connected to the moving contact of the first power supply directly drives the indicating rod 6 to move to the right for switching on, but the indicating rod 6 does not move to the rightmost end because the switch-on is not in place, and the electrical indicating device 4 may not be completely released (the indicating rod pressing plate 6-2-1 still partially presses the first micro switch 4-1,the indicating rod pressing plate 6-2-1 completely presses the second micro switch 4-2), resulting in the switch off signal of the first power supply still being indicated (the mechanical indicator 3 does not move to the position indicating the first power supply to switch on).
  • the indicator rod 6 is returned to a position where the first power supply is fully switched on (the indicator rod pressure plate 6-2-1 will not press the first micro switch 4-1, that is, the first micro switch 4-1 is completely in the pressing plate opening 6-2-1-1, the first micro switch 4-1 provides the switching on signal of the first power supply, while the mechanical indicator 3 moves to a position indicating the first power supply is switched on.
  • the indicating rod matching part 6-3 is a U-shaped groove.
  • the first driving component 1 and the second driving component 2 are respectively engaged with the first protrusion 6-3-1 and the second protrusion 6-3-2 in the U-shaped groove.
  • the first micro switch 4-1 and the second micro switch 4-2 are stacked on top of each other.
  • the pressing plate openings 6-2-1-1 are arranged to be staggered along the moving direction of the indicating rod 6 and respectively corresponds to the first micro switch 4-1 and the second micro switch 4-2.
  • Fig. 6 shows the indicating device according to the present disclosure in a position indicating that the first power supply is switched on.
  • Fig. 7 shows the indicating device according to the present disclosure in a position indicating that the first power supply and the second power supply are all switched off.
  • Fig. 8 shows the indicating device according to the present disclosure in a position indicating that the second power supply is switched on.
  • Figs. 6 to 8 also show the movement of the indicating device.
  • the first moving contact 9 corresponding to the first power supply is in the switching on position, while the second moving contact 10 corresponding to the second power supply is in the switching off position.
  • the mechanical indicating device 3 is in the position of indicating the first power supply to switch on, while the first micro switch 4-1 of the electrical indicating device 4 is not pressed by the indicating rod pressure plate 6-2-1 but is located in the pressing plate opening 6-2-1.
  • the second micro switch 4-2 is pressed by the indicating rod pressure plate 6-2-1, the first micro switch 4-1 provides the switching on signal of the first power supply, and the second micro switch 4-2 provides the switching off signal of the second power supply.
  • the first moving contact 9 corresponding to the first power supply starts to move toward the opening position, and the movement of the first moving contact 9 drives the first driving component 1 to move, and then the movement of the first groove 1-1 drives the first protrusion 6-3-1 to drive the movement of the indicating rod 6.
  • the indicating rod groove 6-1-1 actuates the mechanical swing rod 3-1, so that the mechanical indicating device 3 rotates around the rotation center provided on the housing 7 of the dual-power automatic transfer switch to a position indicating that both the first power supply and the second power supply are switched off (as shown in fig. 7 ).
  • the first micro switch 4-1 and the second micro switch 4-2 of the electrical indicating device 4 are both pressed by the indicating rod pressing plate 6-2-1, the first micro switch 4-1 provides the switching off signal of the first power supply, and the second micro switch 4-2 provides the switching off signal of the second power supply.
  • the second moving contact 10 corresponding to the second power supply starts to move towards the closing position, and the movement of the second moving contact 10 drives the second driving component 2 to move, and then the movement of the second groove 2-1 actuates the second protrusion 6-3-2 to drive the movement of the indicating rod 6.
  • the indicating rod groove 6-1-1 actuates the mechanical swing rod 3-1, so that the mechanical indicating device 3 rotates around the rotation center provided on the housing 7 of the dual-power automatic transfer switch to a position indicating that the second power supply is switched on (as shown in fig. 8 ).
  • the first micro switch 4-1 of the electrical indicating device 4 is pressed by the indicating rod pressing plate 6-2-1, while the second micro switch 4-2 is not pressed by the indicating rod pressing plate 6-2-1.
  • the first micro switch 4-1 provides the switching off signal of the first power supply and the second micro switch 4-2 provides the switching on signal of the second power supply.
  • the rigid connection between the indicating device and the moving contact is realized, thus avoiding the situation of incorrect indication.
  • the situation of incorrect indication is avoided.
  • a dual power automatic transfer switch which includes the indicating device as described above.

Landscapes

  • Push-Button Switches (AREA)
  • Switches With Compound Operations (AREA)
  • Mechanisms For Operating Contacts (AREA)
  • Stand-By Power Supply Arrangements (AREA)
  • Electronic Switches (AREA)
  • Switch Cases, Indication, And Locking (AREA)

Claims (8)

  1. Dispositif indicateur approprié pour un commutateur de transfert automatique à double alimentation qui comprend un premier composant d'entraînement (1) connecté à un premier contact mobile d'une première alimentation électrique et un second composant d'entraînement (2) connecté à un second contact mobile d'une seconde alimentation électrique, dans lequel le premier composant d'entraînement et le second composant d'entraînement sont adaptés à amener respectivement la partie indicatrice à se déplacer, dans lequel :
    le dispositif indicateur comprend un dispositif indicateur mécanique (3) et un dispositif indicateur électrique (4) ; et
    une partie indicatrice (5) agissant sur le dispositif indicateur mécanique et le dispositif indicateur électrique ;
    le mouvement de la partie indicatrice (5) amène le dispositif indicateur mécanique (3) à se déplacer vers une position indiquant que la première alimentation électrique est activée, une position indiquant que la seconde alimentation électrique est activée et une position indiquant que la première alimentation électrique et la seconde alimentation électrique sont toutes deux désactivées ;
    le mouvement de la partie indicatrice (5) actionne de manière correspondante le dispositif indicateur électrique (4) pour indiquer un signal d'activation de la première alimentation électrique, un signal d'activation de la seconde alimentation électrique et un signal de désactivation de la première alimentation électrique et de la seconde alimentation électrique,
    caractérisé en ce que
    la partie indicatrice (5) est une tige indicatrice (6) ;
    une première extrémité (6-1) de la tige indicatrice (6) est pourvue d'une rainure de tige indicatrice (6-1-1) ;
    une tige oscillante mécanique (3-1) agencée sur le dispositif indicateur mécanique (3) est reçue de manière coulissante dans la rainure de tige indicatrice (6-1-1) ;
    la rainure de tige indicatrice (6-1-1) est configurée pour actionner la tige oscillante mécanique (3-1) avec le mouvement de la tige indicatrice (6) pour faire tourner le dispositif indicateur mécanique (3) autour d'un centre de rotation agencé sur un boîtier (7) du commutateur de transfert automatique à double alimentation parmi la position indiquant que la première alimentation électrique est activée, la position indiquant que la seconde alimentation électrique est activée et la position indiquant que la première alimentation électrique et la seconde alimentation électrique sont toutes deux désactivées.
  2. Dispositif indicateur du commutateur de transfert automatique à double alimentation selon la revendication 1, dans lequel
    une seconde extrémité (6-2) de la tige indicatrice est pourvue d'une plaque de pression de tige indicatrice (6-2-1) ;
    la plaque de pression de tige indicatrice comprend une ouverture de plaque de pression (6-2-1-1) ;
    le dispositif indicateur électrique comprend un premier micro-commutateur (4-1) et un second micro-commutateur (4-2) ;
    lorsque la plaque de pression de tige indicatrice (6-2-1) appuie simultanément sur le premier micro-commutateur (4-1) et le second micro-commutateur (4-2), le premier micro-commutateur et le second micro-commutateur fournissent tous deux un signal de désactivation ;
    lorsque la plaque de pression de tige indicatrice (6-2-1) appuie sur le premier micro-commutateur (4-1) et que le second micro-commutateur (4-2) se trouve à l'ouverture de la plaque de pression, le premier micro-commutateur (4-1) fournit le signal de désactivation de la première alimentation électrique et le second micro-commutateur (4-2) fournit le signal d'activation de la seconde alimentation électrique ;
    lorsque la plaque de pression de tige indicatrice (6-2-1) appuie sur le second micro-commutateur (4-2) et que le premier micro-commutateur (4-1) se trouve à l'ouverture de la plaque de pression, le second micro-commutateur (4-2) fournit le signal de désactivation de la seconde alimentation électrique, et le premier micro-commutateur (4-1) fournit le signal d'activation de la première alimentation électrique.
  3. Dispositif indicateur du commutateur de transfert automatique à double alimentation selon la revendication 1 ou 2, dans lequel
    une partie d'adaptation de tige indicatrice (6-3) est agencée entre la première extrémité et la seconde extrémité de la tige indicatrice ;
    la partie d'adaptation de tige indicatrice (6-3) comprend une première partie de joint de tige indicatrice et une seconde partie de joint de tige indicatrice ;
    la première partie de joint de tige indicatrice est en prise avec le premier composant d'entraînement, et le mouvement du premier composant d'entraînement actionne la première partie de joint de tige indicatrice de manière à amener la tige indicatrice à se déplacer ;
    la seconde partie de joint de tige indicatrice est en prise avec le second composant d'entraînement, et le mouvement du second composant d'entraînement actionne la seconde partie de joint de tige indicatrice de manière à amener la tige indicatrice à se déplacer.
  4. Dispositif indicateur du commutateur de transfert automatique à double alimentation selon la revendication 3, dans lequel
    la première partie de joint de tige indicatrice est une première saillie (6-3-1) qui est en prise avec une première rainure (1-1) agencée sur le premier composant d'entraînement, et le mouvement de la première rainure actionne la première saillie de manière à amener la tige indicatrice à se déplacer ;
    la seconde partie de joint de tige indicatrice est une seconde saillie (6-3-2) qui est en prise avec une seconde rainure (2-1) agencée sur le second composant d'entraînement, et le mouvement de la seconde rainure actionne la seconde saillie de manière à amener la tige indicatrice à se déplacer.
  5. Dispositif indicateur du commutateur de transfert automatique à double alimentation selon la revendication 3, dans lequel
    le dispositif indicateur comprend en outre un ressort de réinitialisation (8) ; une extrémité (8-1) du ressort de réinitialisation est installée sur le boîtier du commutateur de transfert automatique à double alimentation ;
    l'autre extrémité (8-2) du ressort de réinitialisation agit sur la tige indicatrice, et le ressort de réinitialisation exerce sa force élastique sur la tige indicatrice dans la direction d'activation de la première alimentation électrique.
  6. Dispositif indicateur du commutateur de transfert automatique à double alimentation selon la revendication 4, dans lequel
    la partie d'adaptation de tige indicatrice (6-3) est une rainure en forme de U ;
    le premier composant d'entraînement et le second composant d'entraînement sont en prise respectivement avec la première saillie et la seconde saillie dans la rainure en forme de U.
  7. Dispositif indicateur du commutateur de transfert automatique à double alimentation selon la revendication 2, dans lequel
    le premier micro-commutateur (4-1) et le second micro-commutateur (4-2) sont empilés l'un sur l'autre ;
    les ouvertures de plaque de pression (6-2-1-1) sont agencées de manière à être décalées le long de la direction de déplacement de la tige indicatrice et correspondent respectivement au premier micro-commutateur et au second micro-commutateur.
  8. Commutateur de transfert automatique à double alimentation, dans lequel
    le commutateur de transfert automatique à double alimentation comprend un dispositif indicateur selon l'une des revendications 1 à 7.
EP20306129.6A 2019-09-30 2020-09-30 Dispositif d'indication du commutateur de transfert automatique à double alimentation et du commutateur de transfert automatique à double alimentation Active EP3799088B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201921673466.2U CN210640133U (zh) 2019-09-30 2019-09-30 双电源自动转换开关的指示装置和双电源自动转换开关

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EP3799088A1 EP3799088A1 (fr) 2021-03-31
EP3799088A9 EP3799088A9 (fr) 2022-08-10
EP3799088B1 true EP3799088B1 (fr) 2022-12-28

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EP (1) EP3799088B1 (fr)
CN (1) CN210640133U (fr)
AU (1) AU2020244488B2 (fr)
ES (1) ES2937913T3 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN214797150U (zh) * 2021-04-23 2021-11-19 施耐德电器工业公司 用于双电源转换开关的弹簧机构及双电源转换开关
CN215644191U (zh) 2021-05-14 2022-01-25 施耐德电器工业公司 一种适用于双电源自动转换开关的指示装置

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4021678A (en) * 1976-01-19 1977-05-03 Automatic Switch Company Automatic transfer switch
WO2012162457A2 (fr) * 2011-05-25 2012-11-29 Symcom, Inc. Commutateur de transfert automatique haute vitesse intelligent
CN105070600B (zh) * 2015-07-28 2018-02-06 上海电科电器科技有限公司 断路器的故障状态指示装置
CN208142055U (zh) * 2018-05-04 2018-11-23 施耐德电器工业公司 双电源转换开关的位置指示器和双电源转换开关
CN208142045U (zh) * 2018-05-04 2018-11-23 施耐德电器工业公司 双电源转换开关及其切换机构
CN209071158U (zh) * 2019-01-10 2019-07-05 常熟开关制造有限公司(原常熟开关厂） 一种自动转换开关的指示辅助装置

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EP3799088A1 (fr) 2021-03-31
AU2020244488A1 (en) 2021-04-22
CN210640133U (zh) 2020-05-29
ES2937913T3 (es) 2023-04-03
AU2020244488B2 (en) 2021-07-29
EP3799088A9 (fr) 2022-08-10

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