WO2009100681A1 - Composant d'indicateur « prêt à fermer » de disjoncteur - Google Patents

Composant d'indicateur « prêt à fermer » de disjoncteur Download PDF

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Publication number
WO2009100681A1
WO2009100681A1 PCT/CN2009/070414 CN2009070414W WO2009100681A1 WO 2009100681 A1 WO2009100681 A1 WO 2009100681A1 CN 2009070414 W CN2009070414 W CN 2009070414W WO 2009100681 A1 WO2009100681 A1 WO 2009100681A1
Authority
WO
WIPO (PCT)
Prior art keywords
indicator
semi
axle
energy storage
circuit breaker
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.)
Ceased
Application number
PCT/CN2009/070414
Other languages
English (en)
Inventor
Lei Ye
Yongqing Ma
Meizhen Wang
Yunjie Cui
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
Publication of WO2009100681A1 publication Critical patent/WO2009100681A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/04—Means for indicating condition of the switching device
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/04—Means for indicating condition of the switching device
    • H01H2071/042—Means for indicating condition of the switching device with different indications for different conditions, e.g. contact position, overload, short circuit or earth leakage

Definitions

  • the present invention relates to a circuit breaker ready-to-close indicator, and more particularly to a safety indicating component disposed on a circuit breaker operating mechanism and displaying whether a circuit breaker is in a closable state through a window.
  • the circuit breaker is an important part in electric equipment.
  • a visualized closable state indicator usually needs to be provided.
  • FIG. 1 shows a structure named "Visualized Closable State Indicator of Circuit Breaker Operating Mechanism". As shown in FIG. 1, the structure includes a side plate 1 installed with various operating mechanisms, a closing button 2 for closing a circuit breaker, a cam 6 connected to an energy storage mechanism via a connecting rod, an energy storage/release indicator 7 for indicating an energy storing state, an OK indicator 9 for indicating whether the circuit breaker is ready to close, a push rod 11, a closing semi-axle 8, and an opening semi-axle 10.
  • a shaft 3 is fixed on the side plate 1.
  • the energy storage/release indicator 7 is supported on the shaft 3.
  • a portion of a smaller diameter is formed on an end portion of the shaft 3, and is inserted into an axle hole of the OK indicator 9.
  • an end on the energy storage/release indicator 7 is further provided with a contact piece 72 for contacting a chassis of the OK indicator 9.
  • the contact piece 72 for driving the OK indicator 9 to move correspondingly must be disposed on the energy storage/release indicator 7 of the above structure.
  • the driving is completely caused by a friction force generated by the contact between the contact piece 72 and the chassis of the OK indicator 9. If contamination of oil stain and dust exists between the contact piece 72 and the chassis of the OK indicator 9, the friction force therebetween is suddenly increased or decreased, which easily causes a linkage failure, unclear state indication, and other disadvantageous influences.
  • the present invention is directed to a safety indicating device displaying whether a circuit breaker is in a closable state through a window, so as to reduce or prevent the aforementioned problems.
  • a circuit breaker ready-to-close indicator component includes an energy storage/release indicator for indicating an energy storing state and an OK indicator for indicating whether the circuit breaker is ready to close.
  • the OK indicator and the energy storage/release indicator are coaxially disposed on a shaft.
  • the OK indicator includes a first semi-axle in a partially cylindrical shape.
  • the energy storage/release indicator includes a second semi-axle matching the first semi-axle in shape. The first semi-axle and the second semi-axle are matched together, and are inserted on the shaft.
  • the energy storage/release indicator drives the OK indicator to move in a first direction through the shape matching between the first semi-axle and the second semi-axle.
  • the OK indicator remains still.
  • the second semi-axle is of a partially cylindrical shape.
  • the first semi-axle has a columnar axle portion and a semi-axial portion with more than a half removed
  • the second semi-axle of the energy storage/release indicator has a columnar axle portion and a semi-axial portion with more than a half removed
  • the semi-axial portion of the first semi-axle and the semi-axial portion of the second semi-axle match each other in shape, and have an angle gap when matched together.
  • the OK indicator has a travel limiting hole fitted on a positioning axle, for limiting travels of the OK indicator in the first direction and the second direction through the positioning axle.
  • the circuit breaker may be in the following several different states: a non-energy storing closed state, an energy storing closed state, a non-energy storing open state, and an energy storing open state. In practice, the circuit breaker can be closed only if the following three conditions are satisfied. (1)
  • the operating mechanism must be in an energy storing state.
  • the circuit breaker must be at an open.
  • the opening fastener must be at a free position. Only if the above three conditions are satisfied, the ready-to-close indicator component in the present invention indicates a closable state.
  • the above structure realizes reliable, safe, and stable linkage and separation through the two matching semi-axles.
  • FIG. 1 is a three-dimensional exploded view of a circuit breaker closed state indicating device according to the prior art
  • FIG. 2 is a three-dimensional exploded view of a circuit breaker ready-to-close indicator component according to a preferred embodiment of the present invention
  • FIG. 3 is a three-dimensional view of an energy storage/release indicator in the circuit breaker ready-to-close indicator component shown in FIG. 2;
  • FIG. 4 is a three-dimensional view of an OK indicator 9 in the circuit breaker ready-to-close indicator component shown in FIG. 2;
  • FIGs. 5a, 5b, and 5c are respectively a front view, a side view, and a perspective view of the circuit breaker ready-to-close indicator component indicating that energy is stored and an opening switch is in an open state;
  • FIGs. 6a, 6b, and 6c are respectively a front view, a side view, and a perspective view of the circuit breaker ready-to-close indicator component indicating that energy is released and the opening switch is in the open state;
  • FIGs. 7a, 7b, and 7c are respectively a front view, a side view, and a perspective view of the circuit breaker ready-to-close indicator component indicating that the energy storage is completed and the opening switch is in the open state.
  • FIG. 2 is a three-dimensional exploded view of a circuit breaker ready-to-close indicator component according to the present invention.
  • a side plate at the left side of the indicator is removed, and only a side plate 1 at the right side of the indicator is taken for example.
  • the side plate 1 is provided thereon with a closing button 2 for closing a circuit breaker, a cam 6 connected to an energy storage mechanism via a connecting rod, an energy storage/release indicator 7 for indicating an energy storing state, an OK indicator 9 for indicating whether the circuit breaker is ready to close, a push rod 11, a closing semi-axle 8, and an opening semi-axle 10.
  • the OK indicator 9 and the energy storage/release indicator 7 are coaxially disposed on a shaft 3.
  • FIG. 3 is a three-dimensional view of the energy storage/release indicator
  • FIG. 4 is a three-dimensional view of the OK indicator 9.
  • the OK indicator 9 has a first semi-axle 91 in a partially cylindrical shape
  • the energy storage/release indicator 7 has a second semi-axle 71 matching the first semi-axle 91 in shape.
  • the energy storage/release indicator 7 drives the OK indicator 9 to move in a first direction Fl shown in FIG. 2 through the shape matching between the first semi-axle 91 and the second semi-axle 71, that is, the OK indicator 9 and the energy storage/release indicator 7 may rotate together in a counter-clockwise direction shown in FIG. 2 through the first semi-axle 91 and the second semi-axle 71 thereof matching each other.
  • the OK indicator 9 and the energy storage/release indicator 7 may be separated from each other, that is, as the first semi-axle 91 of the OK indicator 9 and the second semi-axle 71 of the energy storage/release indicator 7 matching each other have an angle gap therebetween, when the energy storage/release indicator 7 rotates in a clockwise direction shown in FIG. 2, the OK indicator 9 may not rotate with the energy storage/release indicator 7 in the clockwise direction shown in FIG. 2, which will be described in detail below.
  • the energy storage/release indicator 7 is generally of a sector cylindrical plane structure having an arc indicating surface 73 thereon.
  • the indicating surface 73 has a mark denoting that the energy storage is completed on an upper portion. As shown in the figure, the mark includes an icon denoting that a spring has been compressed and a word "charged” denoting that the energy storage is completed.
  • the indicating surface 73 has a mark denoting energy release on a lower portion thereof. As shown in the figure, the mark includes an icon denoting that the spring has been released.
  • the second semi-axle 71 of the energy storage/release indicator 7 has a columnar axle portion 74 and a semi-axial portion 75 with substantially more than a half removed.
  • the OK indicator 9 is generally of a sector cylindrical plane structure having an arc indicating surface 93 thereon.
  • the indicating surface 93 has a mark denoting that the circuit breaker is ready to close on an upper portion thereof.
  • the mark includes a word "ok” denoting that is the circuit breaker is ready to close.
  • the indicating surface 93 has a blank mark denoting that the circuit breaker is not ready to close on a lower portion thereof.
  • the above marks are schematic and may be changed may be changed. For example, the above word "ok” may be changed to "close” and the like.
  • the first semi-axle 91 of the OK indicator 9 has a columnar axle portion
  • the OK indicator 9 further has a travel limiting hole 96 fitted on a positioning axle 76, for limiting travels of the OK indicator 9 in the first direction Fl and the second direction F2 through the positioning axle 76.
  • the OK indicator 9 and the energy storage/release indicator 7 have the first semi-axle 91 and the second semi-axle 71 matching each other in shape.
  • the semi-axial portions 75 and 95 of the two semi-axles are matched together, and are inserted on the shaft 3. Further, the semi-axial portions 75 and 95 are both in a partially cylindrical shape smaller than a half of a cylinder, and thus have an angle gap therebetween. When used together, one side of the two semi-axles may be pressed against each other. For example, a semi-axial surface 951 of the semi-axial portion 95 of the first semi-axle 91 and a semi-axial surface 751 of the semi-axial portion 75 of the second semi-axle 71 are pressed against each other.
  • the OK indicator 9 will rotate with the energy storage/release indicator 7 in the counter-clockwise direction shown in FIG. 2.
  • the energy storage/release indicator 7 rotates in the clockwise direction shown in FIG. 2, as the angle gap exists between the first semi-axle 91 of the OK indicator 9 and the matching second semi-axle 71 of the energy storage/release indicator 7, the OK indicator 9 may not rotate with the energy storage/release indicator 7 in the clockwise direction shown in FIG. 2.
  • the travel limiting hole 96 on the OK indicator 9 can limit travels of the OK indicator 9 in the first direction Fl (the counter-clockwise direction shown in FIG. 2) and the second direction F2 (the clockwise direction shown in FIG. 2). Therefore, when the OK indicator 9 rotates with the energy storage/release indicator 7 in the counter-clockwise direction shown in FIG. 2, the OK indicator 9 will stop rotating when reaching an upper limit of the travel of the OK indicator 9 limited by the positioning axle 76.
  • the energy storage/release indicator 7 will stop rotating correspondingly.
  • the movement of the OK indicator 9 and the energy storage/release indicator 7 in the first direction Fl can be limited at the same time simply by the travel limiting hole 96 on the OK indicator 9, thereby preventing the OK indicator 9 and the energy storage/release indicator 7 from excessively rotating, which enhances the system reliability.
  • FIGs. 5a, 5b, and 5c are respectively a front view, a side view, and a perspective view of the circuit breaker ready-to-close indicator component indicating that energy is stored and an opening switch is in an open state.
  • an circuit breaker operating mechanism (not shown) stores energy, and meanwhile drives the cam 6 to rotate in the clockwise direction (based on the side view of FIG. 5b) to a position shown in the figure by a camshaft 61. At this time, the energy storage is completed.
  • a contact finger 7a of the energy storage/release indicator 7 at an edge of the cam 6 enters a notch 62 of the cam 6 under a counter force of a spring 31 (see FIG. 2), and thus the energy storage/release indicator 7 rotates downwards (in the clockwise direction in FIG. 2, i.e., the second direction) to a position shown in the figure.
  • a casing of the circuit breaker has a window (not shown) corresponding to the position.
  • the mark denoting that the energy storage is completed on the upper portion of the indicating surface 73 of the energy storage/release indicator 7 is exactly presented in the window, while the mark denoting energy release on the lower portion of the indicating surface 73 is located at a lower portion of the window and blocked by the casing, such that the user sees the mark denoting that the energy storage is completed at this time.
  • an under-voltage tripper (not shown) inside the circuit breaker has electricity or an electronic tripping device (not shown) is in a normal state
  • the opening semi-axle 10 does not trip, that is, a fastening plate 101 on the opening semi-axle 10 does not contact a fastening arm 4 on the OK indicator 9 at this time. Therefore, the OK indicator 9 in a free state rotates downwards (in the clockwise direction in FIG. 2, i.e., the second direction) to a position shown in the figure under a counter force of a spring 32.
  • the casing of the circuit breaker has a window (not shown) corresponding to the position.
  • the mark denoting that the circuit breaker is ready to close on the upper portion of the indicating surface 93 of the OK indicator 9 is exactly presented in the window, while the mark denoting that the circuit breaker is not ready to close on the lower portion of the indicating surface 93 is located at a lower portion of the window and blocked by the casing, such that the user sees the sign denoting that the circuit breaker is ready to close at this time.
  • a contact pin 98 (see FIGs. 2 and 4) of the OK indicator 9 does not contact an end face 5 of the push rod 11. Therefore, the push rod 11 in a free state contacts the closing button 2 to the right (based on the side view of FIG. 5b) under a counter force of a spring 12.
  • the circuit breaker ready-to-close indicator component displays the marks denoting that the energy storage is completed and the circuit breaker is ready to close respectively. If the operator applies a force to press the closing button 2, the closing button 2 pushes the push rod 11 to move leftwards by overcoming the acting force of the spring 12 and drive the closing semi-axle 8 to trip, i.e., activate the closing switch and close the contact head to under the counter force of the energy storage spring, such that the circuit breaker is in a closed state, thereby achieving a transition from an open state to the closed state.
  • FIGs. 6a, 6b, and 6c are respectively a front view, a side view, and a perspective view of the circuit breaker ready-to-close indicator component indicating that energy is released and the opening switch is in the open state.
  • the cam 6 rotates to a position shown in the figures in a counter-clockwise direction driven by the connecting rod (not shown) of the operating mechanism.
  • the energy storage/release indicator 7 originally in the notch 62 of the cam 6 rotates upwards (in the clockwise direction in FIG. 2, i.e., the second direction) to the position shown in the figures by overcoming the counter force of the spring 31 (see FIG.
  • the OK indicator 9 rotates upwards with the energy storage/release indicator 7 to the position shown in the figures as the semi-axial surface 751 (see FIG. 3) of the energy storage/release indicator 7 pushes the semi-axial surface 951 (see FIG. 4) of the OK indicator 9.
  • the mark denoting that the circuit breaker is ready to close on the upper portion of the indicating surface 93 of the OK indicator 9 moves upwards to leave the window on the casing, while the mark denoting that the circuit breaker is not ready to close on the lower portion of the indicating surface 93 enters the window of the casing, such that the user sees the mark denoting that the circuit breaker is not ready to close at this time.
  • the mark denoting that the circuit breaker is not ready to close is a blank.
  • the semi-axial surface 951 limits the semi-axial surface 751 (see FIG. 3) of the semi-axial portion 75 of the second semi-axle 71, such that the energy storage/release indicator 7 stops rotating, thereby preventing the OK indicator 9 and the energy storage/release indicator 7 from excessively rotating, which enhances the system stability.
  • the circuit breaker ready-to-close indicator component displays the marks that energy is released and the circuit breaker is not ready to close (energy is released and the circuit breaker is in the open state). If the operator applies a force to press the closing button 2, the closing button 2 cannot contact the push rod 11 , such that the closing semi-axle 8 cannot trip to activate the closing switch.
  • FIGs. 7a, 7b, and 7c are respectively a front view, a side view, and a perspective view of the circuit breaker ready-to-close indicator component indicating that energy storage is completed and the opening switch is in the open state.
  • the circuit breaker operating mechanism (not shown) stores energy again, and meanwhile drives the cam 6 to rotate in the clockwise direction (based on the side view of FIG. 7b) to the position shown in the figures by the camshaft 61, the energy storage is completed.
  • the energy storage/release indicator 7 originally at the edge of the cam 6 rotates downwards (in the clockwise direction in FIG.
  • the mark denoting that the energy storage is completed on the upper portion of the indicating surface 73 of the energy storage/release indicator 7 is exactly presented in the window, while the mark denoting energy release on the lower portion of the indicating surface 73 is located at the lower portion of the window and blocked by the casing, such that the user sees the mark denoting that energy storage is completed at this time.
  • the opening semi-axle 10 trips, that is, the fastening plate 101 on the opening semi-axle 10 contacts the fastening arm 4 on the OK indicator 9 at this time, thereby restraining the OK indicator 9 from rotating clockwise downwards with the energy storage/release indicator 7 by overcoming the counter force of the spring 32.
  • the first semi-axle 91 see FIG. 4
  • the second semi-axle 71 see FIG.
  • the OK indicator 9 may not rotate with the energy storage/release indicator 7 in the clockwise direction shown in FIG. 2. The user still sees the mark denoting that is the circuit breaker is not ready to close through the window at this time.
  • the circuit breaker ready-to-close indicator component displays the marks denoting that the energy storage is completed and the circuit breaker is not ready to close. If the operator applies a force to press the closing button 2, the closing button 2 cannot contact the push rod 11, such that the closing semi-axle 8 cannot trip to activate the closing switch.
  • the above technical solution is applicable to a universal circuit breaker operating mechanism as a safety indicating device before the operating mechanism closes the circuit breaker.
  • the present invention has a compact structure, is convenient in use and operation, is convenient for maintenance and easy for manufacture, and improves safety performance of the circuit breaker during the use.

Landscapes

  • Breakers (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)

Abstract

L'invention concerne un composant d'indicateur « prêt à fermer » de disjoncteur comprenant un indicateur de stockage/libération d'énergie et un indicateur OK. L'indicateur OK et l'indicateur de stockage/libération d'énergie sont disposés coaxialement sur un arbre. L'indicateur OK a un premier demi-axe ayant une forme partiellement cylindrique. L'indicateur de stockage/libération d'énergie a un second demi-axe correspondant à la forme du premier demi-axe. L'indicateur de stockage/libération d'énergie entraîne l'indicateur OK pour qu'il se déplace dans une première direction grâce à la correspondance des formes entre le premier demi-axe et le second demi-axe. Lors du déplacement dans une seconde direction opposée à la première direction, l'indicateur OK et l'indicateur de stockage/libération d'énergie peuvent être séparés l'un de l'autre. La structure permet de réaliser un raccordement et une séparation fiables, sûrs et stables, par l'intermédiaire des deux demi-axes correspondants.
PCT/CN2009/070414 2008-02-14 2009-02-13 Composant d'indicateur « prêt à fermer » de disjoncteur Ceased WO2009100681A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN200810005635.5 2008-02-14
CN2008100056355A CN101510488B (zh) 2008-02-14 2008-02-14 断路器合闸准备就绪指示件组件

Publications (1)

Publication Number Publication Date
WO2009100681A1 true WO2009100681A1 (fr) 2009-08-20

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PCT/CN2009/070414 Ceased WO2009100681A1 (fr) 2008-02-14 2009-02-13 Composant d'indicateur « prêt à fermer » de disjoncteur

Country Status (2)

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CN (1) CN101510488B (fr)
WO (1) WO2009100681A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011107858A1 (fr) * 2010-03-04 2011-09-09 Eaton Corporation Appareil de commutation électrique et ensemble d'indication d'état pour celui-ci
WO2013075983A1 (fr) * 2011-11-21 2013-05-30 Siemens Aktiengesellschaft Disjoncteur de puissance pour installations de distribution moyenne tension
WO2013102726A1 (fr) * 2012-01-06 2013-07-11 Schneider Electric Industries Sas Disjoncteur électrique de puissance à accumulateur d'énergie dispositif de signalisation perfectionné de l'état de fonctionnement

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CN102280318A (zh) * 2010-06-12 2011-12-14 上海电科电器科技有限公司 可合闸状态指示装置
CN101901728B (zh) * 2010-08-05 2013-12-18 无锡新宏泰电器科技股份有限公司 断路器操作机构的合闸就绪指示机构
CN102623258B (zh) * 2012-04-11 2014-09-17 博耳(宜兴)电力成套有限公司 断路器可视化合闸准备就绪指示组件
CN103839733B (zh) * 2014-03-25 2015-12-02 大全集团有限公司 一种断路器的可合闸状态指示装置及与该装置配合的操作机构
EP3333874B1 (fr) 2015-08-04 2020-06-24 Zhejiang Chint Electrics Co., Ltd. Appareil de verrouillage de disjoncteur
CN106449304B (zh) * 2015-08-04 2019-04-05 浙江正泰电器股份有限公司 断路器联锁装置
CN105336545B (zh) * 2015-11-17 2017-06-16 江苏省如高高压电器有限公司 一种断路器操作机构的状态指示结构
CN110853988B (zh) * 2019-10-11 2024-07-02 杭州之江开关股份有限公司 断路器一体式储能、释能状态及合闸准备就绪指示部件及其操作方法
CN116504592B (zh) * 2023-05-15 2025-07-15 上海正泰智能科技有限公司 断路器的操作机构及断路器

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CN2550895Y (zh) * 2002-06-18 2003-05-14 常熟开关厂 断路器操作机构的可视化的可闭合状态指示器
EP1130615B1 (fr) * 2000-02-29 2005-06-22 Siemens Aktiengesellschaft Mécanisme de verrouillage pour un disjoncteur basse tension
CN2884507Y (zh) * 2006-01-19 2007-03-28 上海电器科学研究所（集团）有限公司 断路器操作机构的可合闸指示装置

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EP1111644A1 (fr) * 1999-12-21 2001-06-27 Hager Electro S.A. Dispositif de sécurité pour appareils électriques
EP1130615B1 (fr) * 2000-02-29 2005-06-22 Siemens Aktiengesellschaft Mécanisme de verrouillage pour un disjoncteur basse tension
CN2550895Y (zh) * 2002-06-18 2003-05-14 常熟开关厂 断路器操作机构的可视化的可闭合状态指示器
CN2884507Y (zh) * 2006-01-19 2007-03-28 上海电器科学研究所（集团）有限公司 断路器操作机构的可合闸指示装置

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011107858A1 (fr) * 2010-03-04 2011-09-09 Eaton Corporation Appareil de commutation électrique et ensemble d'indication d'état pour celui-ci
WO2013075983A1 (fr) * 2011-11-21 2013-05-30 Siemens Aktiengesellschaft Disjoncteur de puissance pour installations de distribution moyenne tension
WO2013102726A1 (fr) * 2012-01-06 2013-07-11 Schneider Electric Industries Sas Disjoncteur électrique de puissance à accumulateur d'énergie dispositif de signalisation perfectionné de l'état de fonctionnement
FR2985600A1 (fr) * 2012-01-06 2013-07-12 Schneider Electric Ind Sas Disjoncteur electrique de puissance a accumulateur d'energie et a dispositif de signalisation perfectionne de l'etat de fonctionnement
CN104040660A (zh) * 2012-01-06 2014-09-10 施耐德电器工业公司 具有电池和改进的操作状态的指示装置的电力断路器
US9373457B2 (en) 2012-01-06 2016-06-21 Schneider Electric Industries Sas Circuit breaker indicating cam having a profile which reduces transmission of mechanical shocks to the auxiliary release
CN104040660B (zh) * 2012-01-06 2016-09-28 施耐德电器工业公司 具有电池和改进的操作状态的指示装置的电力断路器

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CN101510488A (zh) 2009-08-19

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