WO2017202327A1 - Démarreur étoile-triangle à commutation pour moteur triphasé à courant alternatif - Google Patents

Démarreur étoile-triangle à commutation pour moteur triphasé à courant alternatif Download PDF

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Publication number
WO2017202327A1
WO2017202327A1 PCT/CN2017/085646 CN2017085646W WO2017202327A1 WO 2017202327 A1 WO2017202327 A1 WO 2017202327A1 CN 2017085646 W CN2017085646 W CN 2017085646W WO 2017202327 A1 WO2017202327 A1 WO 2017202327A1
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WIPO (PCT)
Prior art keywords
circuit breaker
star
breaker
trip lever
pole
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Ceased
Application number
PCT/CN2017/085646
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English (en)
Chinese (zh)
Inventor
王克诚
白晋军
孙晓东
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Tianjin Jmt Electric Equipment Co Ltd
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Tianjin Jmt Electric Equipment Co Ltd
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Filing date
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Application filed by Tianjin Jmt Electric Equipment Co Ltd filed Critical Tianjin Jmt Electric Equipment Co Ltd
Publication of WO2017202327A1 publication Critical patent/WO2017202327A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P1/00—Arrangements for starting electric motors or dynamo-electric converters
    • H02P1/16—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters
    • H02P1/26—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual polyphase induction motor
    • H02P1/32—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual polyphase induction motor by star/delta switching

Definitions

  • the present invention relates to an automatic conversion technique in which a three-phase alternating current motor is started at a low voltage (phase voltage) and is switched to a normal operation at a high voltage (line voltage).
  • the starting current of the high-power three-phase AC motor from static to dynamic is 8-10 times of the normal value, which will affect the surrounding electrical equipment at the moment of starting.
  • the three-phase electric current of the motor is used for step-down start of the three-phase electric phase, which can greatly reduce the starting current.
  • the motor rotor runs smoothly, it is changed to line voltage to maintain the normal operation of the motor.
  • a professional electrical engineer opens the first-to-tail wiring of the three-phase winding of the motor and accesses the three sets of contactors. Through the logical and timing combination control of the electromagnetic coils of the three sets of contactors, the first star is connected and then the corners are connected. The entire startup process.
  • the complete unit requires three contactors as well as time relays. A large amount of precious metals such as silver, copper, and silicon steel sheets are used.
  • the electromagnetic coil itself consumes electric energy and occupies a lot of space for the equipment. Since the contactor has no circuit protection function, the starting device also needs to install a circuit breaker, and the wiring is very complicated.
  • the present invention provides a three-phase AC motor star-angle conversion starter, which realizes the star-corner conversion start of a three-phase AC motor by simple combination of three sets of circuit breakers.
  • the present invention provides a three-phase AC motor star-angle conversion starter, comprising three sets of three-pole air circuit breakers, the three sets of three-pole air circuit breakers are respectively a main switch circuit breaker and a star-connected circuit breaker.
  • a corner-connected circuit breaker the main switch circuit breaker and the star-connected circuit breaker are connected in series by a six-pole drive shaft, and the main switch circuit breaker and the star-connected circuit breaker are externally provided with six a pole linkage handle, a trip interlocking mechanism is not disposed between the main switch breaker and the star breaker; the angle breaker is connected in series by a three-stage drive shaft, and the corner breaker is connected Externally disposed with a three-pole linkage handle; a converter disposed between the star-connected circuit breaker and the corner-connected circuit breaker; one end of the six-pole drive shaft to an outer side of the main switch breaker, the six-pole The other end of the drive shaft is cam-connected to the first handle shaft inside the converter; one end of the three-pole drive shaft to one side of the corner-connected circuit breaker, and the other end of the three-pole drive shaft With the inside of the converter A second cam connected to the handle shaft.
  • the starter further includes a main electronically controlled driver disposed outside the main switch circuit breaker and an electronically controlled driver disposed outside the corner switch circuit breaker; one end of the six pole drive shaft is from the main switch After the circuit breaker is extended, the main An electrically controlled driver is coupled; one end of the three-pole drive shaft is coupled to the electronically controlled driver after extending from an outer side of the angle-connected circuit breaker.
  • a three-phase AC motor star-angle conversion starter wherein the six-pole drive shaft and the three-stage drive shaft are square shafts;
  • the converter includes a casing, and the casing is in a thickness direction Divided into two levels, one of which is close to one side of the star-connected circuit breaker, and the other is adjacent to one side of the corner-connected circuit breaker;
  • the first handle shaft cam and the second handle shaft are disposed in the housing a cam, a first trip lever and a second trip lever;
  • the center of rotation of the first handle shaft cam and the second handle shaft cam are respectively provided with a square hole, and the square hole on the first handle shaft cam
  • the first trip lever and the second trip lever are mounted on the shell through the pin shaft
  • the first trip lever and the second trip lever are rotatably connected to the pin shaft, and the first trip lever and the second trip lever are arranged in a cross structure on two levels, intersecting a point between the first
  • the other end of the emergency stop button is in contact with the swing arm of one end of the swing lever, and the other end swing arm of the swing lever is simultaneously with the first trip lever Second trip lever in contact with a lower end portion; said first trip lever, are provided between the tension spring and said second trip lever pivot lever and the housing.
  • a three-phase alternating current motor star angle conversion starter wherein a convex portion of the first handle shaft cam and a convex portion of the second handle shaft cam are symmetrically arranged when the converter is In the initial state, the convex portion of the first handle shaft cam presses the upper end portion of the first trip lever, so that the first stylus on the first trip lever is in the limit
  • the corner-connecting circuit breaker is turned on at the closing position; at the same time, the recessed portion of the second handle shaft cam is in contact with the upper end portion of the second trip lever, so that the second trip lever is placed on the second trip button
  • the second stylus is in a position that is unrestricted to the star breaker.
  • the invention relates to a three-phase alternating current motor star angle conversion starter, wherein the manual emergency stop mechanism comprises a flexible shaft structure, and the emergency stop button and the emergency stop button lock ring are installed on the operation of the machine through a flexible shaft structure On the panel, the other end of the emergency stop button is provided with a connecting rod that is in contact with the swing arm of one end of the swing lever.
  • the invention relates to a three-phase alternating current motor star angle conversion starter, wherein a three-phase current monitoring induction coil is arranged at a wiring window of an output end of the main switch circuit breaker, and the induction coil cooperates with the main switch circuit breaker to a motor current Abnormal, Phase loss and three-phase current imbalance play a role in monitoring and protection.
  • the wiring is simple, saving the installation time of the electrician.
  • the contactor below 20A does not have an arc extinguishing device, and the solution of the present invention can avoid the risk of arcing.
  • FIG. 1 is an exploded view of a three-phase alternating current motor star angle conversion starter of the present invention
  • FIG. 2 is a schematic structural view of a converter in a three-phase alternating current motor star-angle conversion starter of the present invention
  • Figure 3 is a perspective view showing the internal structure of the converter shown in Figure 2;
  • Figure 4 is a side view of the internal structure of the converter shown in Figure 3;
  • FIG. 5 is a schematic diagram of a star-angle conversion starter of an electronically controlled three-phase alternating current motor according to Embodiment 1 of the present invention
  • FIG. 6 is a schematic diagram showing the star angle conversion of a manually controlled three-phase alternating current motor according to Embodiment 2 of the present invention.
  • Figure 7 is a schematic view showing the electrical connection of the three-phase alternating current motor star-angle conversion starter of the present invention.
  • Figure 8 is a schematic diagram of the star connection of the three-phase alternating current motor star angle conversion starter of the present invention.
  • Figure 9 is a schematic diagram of the delta connection in the three-phase alternating current motor star angle conversion starter of the present invention.
  • the high-power motor will generate several times the rated current at the moment of starting, it is necessary to temporarily connect the motor windings into a star (phase voltage) wiring mode for low-voltage start, and wait for the motor rotor to run smoothly before returning to normal.
  • the triangular (line voltage) wiring mode enters high voltage operation.
  • the conventional star-angle switching starter motor solution uses three contactors to overlap each other and is realized by a logical combination of the contactor's own electromagnetic attraction coils.
  • the design idea of the invention is to use an air circuit breaker to combine and realize an automatic conversion method and a specific implementation scheme of the motor "low pressure Y start / high pressure ⁇ working operation".
  • the present invention provides a three-dimensional AC motor star-angle conversion starter that is compact and highly integrated.
  • a three-phase AC motor star-angle conversion starter includes three sets of three-pole air circuit breakers, and the three sets of three-pole air circuit breakers are respectively a main switch circuit breaker 1 and a star connection.
  • a circuit breaker 2 and a corner breaker 3, a converter 4 is arranged between the star breaker 2 and the corner breaker 3.
  • the main switch circuit breaker 1 and the star-connected circuit breaker 2 are connected in series by a six-pole drive shaft 5, and the main switch circuit breaker 1 and the star-connected circuit breaker 2 are externally provided with a six-pole linkage.
  • a handle 7, a trip interlocking mechanism is not disposed between the main switch breaker 1 and the star breaker 2; the corner breaker 3 is connected in series by a three-stage drive shaft 8, the corner joint
  • the outside of the circuit breaker 3 is provided with a three-pole linkage handle 10; one end of the six-pole drive shaft to the outside of the main switch breaker 1 (as shown in FIG.
  • the main switch circuit breaker 1 is extended and connected to the main electronically controlled drive 9 (as shown in FIG. 1), and the other end of the six-pole drive shaft 5 controls the angle-connected circuit breaker 3 through the converter 4. Turning on or off; one end of the three-pole drive shaft to one side of the corner breaker 3 (as shown in FIG. 6), or one end of the three-pole drive shaft 8 is connected from the corner After the circuit breaker 3 is extended, it is connected to the electronically controlled driver 9 (as shown in FIG. 1), and the other end of the three-pole drive shaft 8 controls the star-connected circuit breaker through the converter 4. 2 is turned on or off.
  • the six-pole drive shaft 5 and the three-stage drive shaft 8 are square shafts.
  • the converter 4 in an initial state (Fig. 3, Fig. 4 is a different perspective view of the internal structure of the converter 4) includes a housing which is divided into two levels in the thickness direction.
  • One of the layers is adjacent to one side of the star-connected circuit breaker 2, and the other layer is adjacent to one side of the corner-connected circuit breaker 3;
  • the housing is provided with a first handle shaft cam 4a and a second handle shaft cam 4b a first trip lever 4c and a second trip lever 4d;
  • the center of rotation of the first handle shaft cam 4a and the second handle shaft cam 4b are respectively provided with square holes, as shown in FIG.
  • a square hole on the first handle shaft cam 4a is engaged with the six-pole drive shaft 5, and a square hole on the second handle shaft cam 4b is engaged with the three-pole drive shaft 8.
  • the first trip lever 4c and the second trip lever 4d are mounted on the housing through a pin O, and the first trip lever 4c and the second trip lever 4d are The pin O is rotatably connected.
  • FIG. 2 FIG. 3 and FIG.
  • the first trip lever 4c and the second trip lever 4d are arranged in a cross structure on two levels, and the intersection is located at Between the first handle shaft cam 4a (or the second handle shaft cam 4b) and the pin O, the first handle shaft cam 4a is adjacent to the side of the star breaker 2, and the second handle shaft The cam 4b is close to the side of the corner breaker 3; in the initial state, the first a convex outer contour of a handle shaft cam 4a presses an upper end portion of the first trip lever 4c, and a concave portion outer contour of the second handle shaft cam 4b contacts an upper end portion of the second trip lever 4d No pressure is formed; the first trip lever 4c is provided with a first contact pin 4e under the pin shaft, and the second trip lever 4d is located at the pin shaft The second stylus 4f is disposed below, and after the first trip lever 4c and the second trip lever 4d are crossed on two levels, the lower portion of the first trip lever 4c is close to the angle breaker 3, the lower portion of the second trip
  • the convex portion of the first handle shaft cam 4a and the convex portion of the second handle shaft cam 4b are symmetrically arranged when mounted, and when the converter 4 is in an initial state, the first The convex portion of the handle shaft cam 4a presses the first trip lever 4c, forcing the first contact pin 4e thereon to withstand the trip mechanism of the corner-connected circuit breaker 3, so that the angle-connected circuit breaker 3
  • the closing action of the closing can not be performed; at the same time, the convex portion of the second handle shaft cam 4b does not press the second tripping lever 4d, and the second stylus 4f thereon is disengaged from the star
  • the contact of the circuit breaker 2 tripping mechanism is not limited to the closing and conducting operation of the star breaker 2, and the arrangement of the mechanical structure of the converter 4 in the initial state ensures the order of the first star and then the corner, effectively preventing the Manual misoperation.
  • the converter 4 is further provided with a manual emergency stop mechanism including an emergency stop button 4g, an emergency stop button lock ring 4h and a swing lever, and the swing lever is fixed by a pin.
  • a manual emergency stop mechanism including an emergency stop button 4g, an emergency stop button lock ring 4h and a swing lever, and the swing lever is fixed by a pin.
  • the manual emergency stop mechanism may further include a flexible shaft structure 4i through which the emergency stop button 4g and the soft shaft structure 4i
  • the emergency stop button lock ring 4h is mounted on the operation panel of the machine, and the other end of the emergency stop button 4g is in contact with the swing arm of one end of the swing bar.
  • the function of the emergency stop button lock ring 4h is that an emergency stop condition occurs in the machine, and the emergency stop button 4g is locked by the emergency stop button lock ring when the emergency stop button 4g is pressed, and the circuit breaker cannot be closed and turned on. Unlock recovery after troubleshooting.
  • the first trip lever 4d, the second trip lever 4c, and the swing lever and the housing are each provided with a tension spring.
  • a three-phase current monitoring induction coil 11 is disposed at a wiring window of an output end of the main switch breaker 1 , and the induction coil 11 cooperates with the main switch breaker 1 to abnormally cause a motor current.
  • the phase loss and three-phase current imbalance play the role of monitoring and protection. When one, two or all of the three current induction coils are not sensed, and the induced current is seriously unbalanced, the main electronically controlled driver will automatically Trigger the entire star converter to turn off the power.
  • the working principle of the three-phase AC motor star angle conversion starter is: in order to ensure that the logic relationship of the whole startup is correct, that is, the initial state of the starter is the disconnection state of all the circuits; the order of starting must be the first star Shape connection
  • the triangle is connected and returns to the initial state after stopping.
  • the present invention utilizes the handle integral structure design of the main switch circuit breaker 1 and the star-connected circuit breaker 2, that is, the inside of the main switch circuit breaker 1 is described by a six-pole drive shaft 5
  • the star-connected circuit breakers 2 are connected in series to form two sets of six-pole circuit breakers.
  • the main electronically controlled driver 6 drives the six-pole drive shaft or directly pushes the six-pole linkage handle 7 to form the main
  • the interlocking of the switch breaker 1 and the star breaker 2 is closed, as shown in FIG. 7, FIG. 8 and FIG. 9, the main switch breaker 1 connects the three-phase electric A, B, C to the three windings of the motor.
  • the head ends (U1, V1, W1) of U, V, W, and the tail ends (U2, V2, W2) are short-circuited by the star breaker 2 (Y MCB) to form a standard low-voltage start star circuit connection mode;
  • the driving shaft 5 drives the protruding portion of the first handle shaft cam 4a to be disengaged from the upper end portion of the first tripping lever 4c, and the first contact pin 4e on the first tripping lever 4c is disengaged.
  • the corner-connected circuit breaker 3 ( ⁇ MCB) starts to be closed
  • the angle-connected circuit breaker 3 is composed of a three-pole circuit breaker, and the inside is also connected by a three-pole drive shaft 8 in series, and the angle-connected circuit breaker 3
  • the driving shaft 8 drives the protruding portion of the second handle shaft cam 4b to start pressing the upper end portion of the second tripping lever 4d, and the second stylus 4f on the second tripping lever 4d starts to fire.
  • the tripping mechanism of the star-connected circuit breaker 2 disconnects the star-connected circuit breaker 2, so that the mechanical structure ensures that the three pairs of contacts of the angle-connected circuit breaker 3 are connected before the star-connected circuit breaker 2 is advanced. Disconnected, after the motor has passed the short-term power-off inertia operation at this time, the angle-connected circuit breaker 3 is quickly turned on, and the motor enters the normal high-voltage (line voltage) operation state.
  • the motor star connection is low-voltage start: the main control driver 6 starts to drive the six-pole drive shaft 5 to rotate, or manually pulls the six-pole linkage handle 7 to close, the main circuit is turned on, and the three winding ends of the motor are short-circuited (connected in Together, the motor achieves a star connection for low pressure operation.
  • the six-pole drive shaft 5 drives the first handle shaft cam 4a (based on the projection direction of FIG. 2) to rotate clockwise, so that the contact between the protruding portion of the first handle shaft cam 4a and the first trip lever 4c is converted.
  • the motor is switched to the normal high-voltage delta connection state: after the motor low-voltage star connection runs smoothly, the electronically controlled driver 9 starts to drive the three-pole drive shaft 8 to rotate, or manually pulls the three-pole linkage handle 10 to close, and three The three-pole drive shaft 8 interlocked by the pole linkage handle 10 drives the second handle shaft cam 4b such that the protruding portion of the second handle shaft cam 4b touches the upper end portion of the second trip lever 4d, resulting in the trip lever
  • the second stylus 4f on the 4d triggers the tripping mechanism of the star-connected circuit breaker 2, at this moment, the closing action of the three-pole linkage handle 10 is still in the middle of the movement, but the second stylus 4f has already connected the star breaker 2 The contact of the contact is broken.
  • the motor winding circuit is cut off at this time, due to the inertia of the motor rotor and the mechanical equipment, the motor is completely operated by inertia at this time. This short power-off interval is necessary, and the mechanical structure is guaranteed. The order of the two winding connections. After a short power-off inertia operation of the motor, the three-pole linkage handle 10 is completely closed, the motor winding realizes a delta connection, and the motor enters a normal high-voltage corner connection operation state.
  • the motor stops running The invention can be implemented in several ways when the work is stopped or the machine encounters an emergency and needs to cut off the power of the motor.
  • the main electronic control driver 6 is internally provided with an electromagnetic tripping mechanism, which can trigger the electromagnetic tripping of the main switch breaker 1 through a wired or wireless stop button, and simultaneously pass through the six-pole drive shaft 5 and the first handle shaft.
  • the cam 4a, the first trip lever 4c, the first contact pin 4e, and the trigger angle circuit breaker 3 together with the trip mechanism are turned off; secondly, the manual emergency stop button 4g or 4i is pressed, by pressing the emergency stop button 4g or 4i, pushing the swinging rod, the swinging rod simultaneously drives the first tripping lever 4d and the second tripping lever 4c to rotate counterclockwise, so that the 4e and 4f on the tripping lever move to the right, triggering the star-connected circuit breaker 2 and the corner-connected circuit breaker 3 simultaneously trips off the brake, the three winding circuits of the motor are cut off, the current induction coil 11 has no induction, the main control driver automatically triggers the main switch circuit breaker 1 electromagnetic tripping off; third, direct Manually pulling down the six-pole linkage handle 7, as described above, in addition to the six-stage linkage breaker itself, also passing through the six-pole drive shaft 5, the first handle shaft cam 4a, the first trip lever 4c a first stylus 4e, triggering
  • the present invention also provides an economical solution for removing portions of the electronic control (the main electronically controlled driver 6 and the electronically controlled driver 9), as shown in Fig. 6, which is completely operated by hand and is visually converted into a star angle.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Breakers (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

La présente invention concerne un démarreur étoile-triangle à commutation qui est destiné à un moteur triphasé à courant alternatif et qui comprend trois coupe-circuits à air à trois pôles, dont un coupe-circuit de commutateur principal (1), un coupe-circuit étoile (2) et un coupe-circuit triangle (3). Le coupe-circuit de commutateur principal (1) et le coupe-circuit étoile (2) sont connectés en série par un arbre d'entraînement à six pôles (5), une poignée de liaison à six pôles (7) est disposée à l'extérieur du coupe-circuit de commutateur principal (1) et du coupe-circuit étoile (2), et aucun mécanisme de déclenchement de verrouillage n'est disposé entre le coupe-circuit de commutateur principal (1) et le coupe-circuit étoile (2). Le coupe-circuit triangle (3) est connecté en série par un arbre d'entraînement à trois pôles (8), et une poignée de liaison à trois pôles (10) est disposée à l'extérieur du coupe-circuit triangle (3). Un convertisseur (4) est disposé entre le coupe-circuit étoile (2) et le coupe-circuit triangle (3). Une extrémité de l'arbre d'entraînement à six pôles (5) est connectée à un circuit d'attaque principal commandé électriquement (6), et l'autre extrémité de l'arbre d'entraînement à six pôles (5) commande la fermeture ou l'ouverture du coupe-circuit triangle (3) au moyen du convertisseur (4). Une extrémité de l'arbre d'entraînement à trois pôles (8) est connectée à un circuit d'attaque commandé électriquement (9), et l'autre extrémité de l'arbre d'entraînement à trois pôles (8) commande la fermeture ou l'ouverture du coupe-circuit étoile (2) au moyen du convertisseur (4). Le démarreur étoile-triangle à commutation selon la présente invention utilise une combinaison simple de trois coupe-circuits afin de mettre en œuvre le démarrage de la commutation étoile-triangle d'un moteur triphasé à courant alternatif, de sorte que les lignes sont simples, et le temps nécessaire pour l'installation, les coûts et l'occupation d'un espace intérieur dans l'équipement peuvent être réduits.
PCT/CN2017/085646 2016-05-27 2017-05-24 Démarreur étoile-triangle à commutation pour moteur triphasé à courant alternatif Ceased WO2017202327A1 (fr)

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Application Number Priority Date Filing Date Title
CN201610370819.6 2016-05-27
CN201610370819.6A CN105978406B (zh) 2016-05-27 2016-05-27 三相交流电机星角转换启动器

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WO2017202327A1 true WO2017202327A1 (fr) 2017-11-30

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108155069A (zh) * 2018-02-09 2018-06-12 浙江德菱科技股份有限公司 重合闸小型断路器
CN112768277A (zh) * 2021-01-11 2021-05-07 嘉兴京硅智能技术有限公司 智能型断路器急停装置
CN118039422A (zh) * 2024-02-20 2024-05-14 江苏国龙电气有限公司 一种电路线路紧急保护装置
CN120222200A (zh) * 2025-04-07 2025-06-27 江苏西杰输配电设备有限公司 一种智能化电网监测联合动作保护的配电柜及其保护方法

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105978406B (zh) * 2016-05-27 2018-06-01 天津加美特电气设备有限公司 三相交流电机星角转换启动器
CN106499615B (zh) * 2016-12-27 2018-01-19 北京中科三正电气有限公司白旗分公司 具有消防泵星角启动的手动操作的机械装置的控制柜
CN109360754B (zh) * 2018-11-06 2024-01-19 安士缔(中国)电气设备有限公司 一种应用于两台断路器的星三角电气回路操作装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1350694A (zh) * 1999-03-24 2002-05-22 维塔尔耐尔运动有限公司 星形－三角形切换元件
US7474074B2 (en) * 2006-11-16 2009-01-06 Emerson Electric Co. Variable speed induction motor with wye-delta switching with reduced drive volt-amp requirement
CN201928215U (zh) * 2010-12-15 2011-08-10 莱芜市温岭锻造有限公司 电机逻辑控制星角自动转换节电柜
CN102811018A (zh) * 2011-06-03 2012-12-05 西门子公司 采用与负载相关的星形接法或三角形接法的异步电动机
CN105978406A (zh) * 2016-05-27 2016-09-28 天津加美特电气设备有限公司 三相交流电机星角转换启动器
CN205792316U (zh) * 2016-05-27 2016-12-07 天津加美特电气设备有限公司 三相交流电机星角转换启动器

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2006147C3 (de) * 1970-02-11 1978-10-26 Maerkische Elektro-Industrie Adolf Vedder Kg, 5890 Schalksmuehle Stern-Dreieck-Schalter
JPS5431580A (en) * 1977-08-12 1979-03-08 Motomu Miyamoto Switch and device for operation thereof
KR20000073458A (ko) * 1999-05-11 2000-12-05 권수영 스타-델타 결선용 전자개폐기
CN2590276Y (zh) * 2002-12-16 2003-12-03 马国奶 一种微功耗智能降压电机起动器
CN2694612Y (zh) * 2004-02-11 2005-04-20 深圳泰永科技有限公司 星三角降压启动器
CN202503463U (zh) * 2012-04-24 2012-10-24 李斗占 一种油浸式星三角起动器

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1350694A (zh) * 1999-03-24 2002-05-22 维塔尔耐尔运动有限公司 星形－三角形切换元件
US7474074B2 (en) * 2006-11-16 2009-01-06 Emerson Electric Co. Variable speed induction motor with wye-delta switching with reduced drive volt-amp requirement
CN201928215U (zh) * 2010-12-15 2011-08-10 莱芜市温岭锻造有限公司 电机逻辑控制星角自动转换节电柜
CN102811018A (zh) * 2011-06-03 2012-12-05 西门子公司 采用与负载相关的星形接法或三角形接法的异步电动机
CN105978406A (zh) * 2016-05-27 2016-09-28 天津加美特电气设备有限公司 三相交流电机星角转换启动器
CN205792316U (zh) * 2016-05-27 2016-12-07 天津加美特电气设备有限公司 三相交流电机星角转换启动器

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108155069A (zh) * 2018-02-09 2018-06-12 浙江德菱科技股份有限公司 重合闸小型断路器
CN108155069B (zh) * 2018-02-09 2023-11-17 浙江德菱科技股份有限公司 重合闸小型断路器
CN112768277A (zh) * 2021-01-11 2021-05-07 嘉兴京硅智能技术有限公司 智能型断路器急停装置
CN118039422A (zh) * 2024-02-20 2024-05-14 江苏国龙电气有限公司 一种电路线路紧急保护装置
CN120222200A (zh) * 2025-04-07 2025-06-27 江苏西杰输配电设备有限公司 一种智能化电网监测联合动作保护的配电柜及其保护方法

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