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WO2014010110A1 - Dispositif de commutation - Google Patents

Dispositif de commutation Download PDF

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Publication number
WO2014010110A1
WO2014010110A1 PCT/JP2012/080067 JP2012080067W WO2014010110A1 WO 2014010110 A1 WO2014010110 A1 WO 2014010110A1 JP 2012080067 W JP2012080067 W JP 2012080067W WO 2014010110 A1 WO2014010110 A1 WO 2014010110A1
Authority
WO
WIPO (PCT)
Prior art keywords
cam
shutter
lock
locked
shaft
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/JP2012/080067
Other languages
English (en)
Japanese (ja)
Inventor
進 小鶴
崇士 ▲黒▼田
俊文 佐藤
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to CN201280074664.1A priority Critical patent/CN104471806B/zh
Priority to KR1020157000343A priority patent/KR101648319B1/ko
Priority to JP2014524588A priority patent/JP5818989B2/ja
Publication of WO2014010110A1 publication Critical patent/WO2014010110A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B11/00—Switchgear having carriage withdrawable for isolation
    • H02B11/12—Switchgear having carriage withdrawable for isolation with isolation by horizontal withdrawal
    • H02B11/127—Withdrawal mechanism
    • H02B11/133—Withdrawal mechanism with interlock
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
    • H01H31/003—Earthing switches
    • 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
    • H01H9/20—Interlocking, locking, or latching mechanisms
    • H01H9/22—Interlocking, locking, or latching mechanisms for interlocking between casing, cover, or protective shutter and mechanism for operating contacts
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B11/00—Switchgear having carriage withdrawable for isolation
    • H02B11/28—Earthing arrangements

Definitions

  • the present invention relates to a switchgear having a key interlock mechanism in which a switching device such as a disconnecting switch or a grounding switch is accommodated in a housing, and is locked in an “on” or “off” state of the switching device. .
  • an interlock latch lock (locking mechanism) is provided in each of the circuit breaker and disconnector connected to the same circuit of the switchboard
  • the interlock for the disconnector is provided with a recess corresponding to the closing and opening positions of the disconnector on the outer periphery of the cam plate fixed to the disconnector operating shaft, and the latch lock rod can be engaged with the recess of the cam plate. Is arranged. By turning the disconnector operating shaft with the operating handle and locking it in the open or closed position, the rod engages with the recess and locks the state (see, for example, Patent Document 1).
  • an operation shaft with an detachable operation handle at the end has an operation shaft for operating the open / close of the disconnector, and an operation shaft that is provided on the prismatic portion of the operation shaft and slides to a position that covers and exposes the prism
  • a cylindrical operation piece that rotates together, two rod pins that can be engaged with pin holes provided at two locations in the circumferential direction of the operation piece, and two locks that press the rod pin by locking.
  • the present invention has been made in order to solve the above-described problems, and there is no risk that the interlock function may be impaired due to an excessively large force during the interlock operation, and the number of parts can be reduced. It aims at providing the switchgear provided with.
  • the switchgear according to the present invention is configured such that an opening / closing device and its operation shaft are accommodated in a housing, and the opening / closing device is turned on and off by inserting an operation handle from the outside of the housing and rotating the operation shaft.
  • the shutter that opens and closes the insertion opening of the operation handle formed in the housing, the first cam that rotates in conjunction with the rotation of the operation shaft, and the rotation that operates in conjunction with the opening and closing operation of the shutter.
  • the second cam that moves, and when the open / close device is "ON” or "OFF” and the shutter is "CLOSE”, the latch can be locked by engaging the latches on the outer periphery of the first cam and the second cam.
  • a key interlock mechanism having a lock.
  • a three-point disconnector and its operating shaft are housed inside the case, and the operation shaft is inserted and operated from the outside of the case.
  • a switchgear configured to operate a three-point disconnector by rotating the shaft
  • a shutter that opens and closes the insertion opening of the operation handle formed in the housing, and rotates in conjunction with the rotation of the operation shaft.
  • the shutter that opens and closes the insertion opening of the operation handle, the first cam that rotates in conjunction with the rotation of the operation shaft, and the first that rotates in conjunction with the opening and closing operation of the shutter.
  • a lock that can be locked by engaging a latch with a recess provided on the outer periphery of the first cam and the second cam when the opening / closing device is “on” or “off” and the shutter is “closed”. Therefore, the number of parts constituting the key interlock mechanism can be reduced and the cost can be reduced as compared with the prior art disclosed in Patent Document 2. Further, as the number of parts is reduced, the space constituting the key interlock can be reduced, and the space of the device can be saved. In addition, since the rotation of the operating shaft of the opening / closing device can be locked and the insertion of the operating handle can be locked at the same time, it can be avoided that the operating handle is accidentally operated while the operating shaft is locked and the interlock function is impaired. .
  • a shutter that opens and closes the insertion opening of the operation handle, a first cam that rotates in conjunction with the rotation of the operation shaft, a second cam that rotates in conjunction with the opening and closing operation of the shutter, and three points
  • the disconnector is in "connected”, “disconnected”, or “grounded” state, and the shutter is "closed”
  • the latch is engaged with the recesses provided on the outer periphery of the first and second cams. Since the key interlock mechanism having the three locks that can be locked is provided, the same effect as described above can be obtained in the switch gear having the three-point disconnector.
  • FIG. 2 is a front view and a side sectional view of a switchgear according to Embodiment 1 of the present invention. It is the front view and bottom view which show the interlock mechanism part of FIG. It is the perspective view which looked at the interlock mechanism part of FIG. 2 from the front upper right.
  • FIG. 3 is a detailed view of a first cam and a second cam of the interlock mechanism portion of FIG. 2. It is a perspective view which shows the principal part of FIG. It is explanatory drawing which shows the relationship between the operation position of the shutter and earthing switch of FIG. 2, and the rotation position of a cam. It is explanatory drawing which shows the relationship between the rotation position of each cam of FIG. 2, and locking.
  • FIG. 1A and 1B show an overall configuration of a switchgear according to Embodiment 1, wherein FIG. 1A is a front view and FIG. 1B is a side sectional view. 2 is an enlarged view of the interlock mechanism portion of FIG. 1, wherein (a) is a front view and (b) is a bottom view thereof.
  • the interior of the metal housing 1 is partitioned into a plurality of compartments.
  • a drawer-type circuit breaker 2 is accommodated in the circuit breaker chamber on the front side so that it can be pulled out from the front side, and a disconnection portion 3a of the main circuit is provided on the rear wall of the circuit breaker chamber at a predetermined interval in the vertical direction. , 3b are fixedly attached to and detachable from the connection terminal protruding from the back surface of the circuit breaker 2.
  • the upper side of the circuit breaker chamber on the back side is a bus bar chamber, a three-phase bus bar 4 is supported by a support insulator (not shown), and the bus bar 4 is a disconnect to which one end side of the circuit breaker 2 is connected.
  • the main circuit terminal of the part 3 a is connected to the branch conductor 5.
  • Below the bus room on the back side of the circuit breaker room is a cable room for accommodating the cable 6 on the load side.
  • the cable 6 is connected to the main circuit terminal of the disconnecting portion 3b to which the other end side of the circuit breaker 2 is connected.
  • a current transformer 8 is provided through the connection conductor 7.
  • a ground switch 9 is connected to the disconnecting portion 3 b side via a connection conductor 7.
  • An operation shaft 10 for opening and closing the earthing switch 9 is horizontally disposed from the earthing switch 9 toward the front side of the housing 1, and an operation handle 11 is provided at an end portion on the front side.
  • a detachable fitting portion is formed.
  • a handle insertion port 12 into which an operation handle 11 can be inserted is provided at the position of the operation shaft 10 on the front side of the housing 1.
  • a shutter 13 (see FIGS. 2, 3, and 5 for details) that can open and close the handle insertion port 12 is provided between the end 10. With the shutter 13 in the open state, the operation handle 11 is inserted into the handle insertion port 12 and is fitted to the end of the operation shaft 10, for example, is engaged with a protrusion 10a (see FIG. 3) provided at the end. By rotating the shaft 10, the blade of the ground switch 9 swings so that the ground position “ON” and the disconnect position “OFF” can be switched.
  • first lock 14 and a second lock 15 that lock the movement of the shutter 13 and the rotation of the operation shaft 10 in conjunction with a cam described later are provided on the front side of the housing 1.
  • the key interlock mechanism is configured in the part.
  • the internal configuration of the switch gear is an example and is not limited to FIG.
  • FIGS. 2A is an enlarged view of the frame portion of the housing 1 provided with the first and second locks 14 and 15 of FIG. 1A
  • FIG. 2B is a view of FIG.
  • FIGS. 3A and 3B are perspective views of the key interlock mechanism as viewed from the upper right of the front.
  • FIG. 3A shows a state in which the shutter 13 is opened
  • FIG. 3B shows a state in which the shutter 13 is closed.
  • illustration of each lock is omitted.
  • a cam shaft 16 that is connected and rotated by a link lever 21 in conjunction with the rotation of the operation shaft 10 is supported and provided in the housing 1. ing.
  • a first cam 17 is provided that is fixed to the cam shaft 16 and rotates together with the cam shaft 16.
  • a moving second cam 18 is provided on the cam shaft 16 so as to be rotatable in the vicinity of the first cam 17.
  • One end side of the shutter 13 is engaged with an engagement pin 19 provided on the second cam 18.
  • a knob 20 protruding outward from the slit 1a provided in the housing 1 is provided on the other end side of the shutter 13.
  • the shape of the cam will be described with reference to FIG. (A) is the 1st cam 17 fixed to the cam shaft 16, and rotates with the cam shaft 16, (b) is the side view.
  • the first cam 17 has a disc shape and is provided with recesses 17a and 17b cut out toward the axial center at two positions 90 ° apart from the outer periphery.
  • the recesses 17a and 17b are shown as being connected to one, but depending on the size of the recess, a recess notched in a U-shape as shown in (c) may be provided individually. Also good.
  • (C) is a front view of the second cam 18 that rotates in conjunction with the opening / closing operation of the shutter 13, and (d) is a side view thereof.
  • the second cam 18 has a disk shape and is provided with recesses 18a and 18b cut out toward the axial center at two positions 180 ° apart on the outer periphery.
  • An engagement pin 19 that engages with one end of the shutter 13 is provided on the front side near the outer periphery.
  • FIG. 5 is a perspective view showing a main part of the key interlock mechanism, as viewed from the front side.
  • a first lock 14 and a second lock 15 are arranged on both sides of the first cam 17 and the second cam 18 in the radial direction, and are fixed to the housing 1 side.
  • Each lock is provided with a latch that is entered and exited by key operation, and the latch 14a of the first lock 14 and the latch 15a (see FIG. 6) of the second lock 15 are directed to the cam surfaces of the cams 17 and 18, respectively. Are opposed to each other.
  • the concave portions of the first cam 17 and the second cam 18 are both turned to one of the latch positions, the latch of the lock at that position can be protruded by a key operation.
  • the engagement pin 19 of the second cam 18 is engaged with an engagement hole 13 a provided at one end of the shutter 13, and the second cam 18 is interlocked with the left and right movement of the shutter 13. Is pivotable about the axis. That is, the second cam 18 is coaxial with the first cam 17 but can be operated individually.
  • FIG. 6 is a diagram showing the rotation position of each cam and the locking relationship of each lock.
  • (A) And (b) is a figure which shows the relationship between the opening-and-closing position of the shutter 13, and the rotation position of the 2nd cam 18, (a) is when the shutter 13 is open, (b) is the shutter 13 Shows when is closed. When the shutter 13 is open, neither lock 14, 15 can be locked. Further, when the shutter 13 is closed, the locks 14 and 15 can be locked.
  • (a) and (b) are diagrams for explaining only the relationship between the position of the shutter 13 and the locks 14 and 15. In actual operation, both the locks 14 and 15 are related to the first cam 17. Cannot be locked at the same time.
  • (C) And (d) is a figure which shows the relationship between the opening / closing position of the earthing switch 9 and the rotation position of the 1st cam 17, (c) is when the earthing switch 9 is “OFF”, (D) shows a case where the ground switch 9 is “ON”.
  • the ground switch 9 is “OFF”, the first lock 14 can be locked, and when the ground switch 9 is “ON”, the second lock 15 can be locked.
  • the lock described here uses a lock that is unlocked in the locked state and cannot be unlocked in the unlocked state, and a total of two different keys, one for each of the lock 14 and the lock 15. I use it.
  • the ground switch 9 is simply locked in the “on” and “off” states without requiring an interlock, the same type of key is used for the lock 14 and the lock 15. The key may be removed either in the locked or unlocked state.
  • FIG. 7 is a view for explaining the rotational positions of the first cam 17 and the second cam 18 and the locking relationship between the locks 14 and 15, and shows a state seen from the front side.
  • the first cam 17 is slightly reduced and shown by a broken line for easy understanding.
  • the concave portion 17a of the first cam 17 and the concave portion 18a of the second cam 18 come to the opposite positions of the latch 14a of the first lock 14, the first lock 14 is locked. be able to.
  • the concave portion 17b of the first cam 17 and the concave portion 18b of the second cam 18 come to the opposite positions of the latch 15a of the second lock 15, the second lock 15 is Can be locked.
  • the ground switch 9 In the normal operation state of the switchgear, the ground switch 9 is in a disconnected state, that is, “OFF”, and the key interlock mechanism is in the state shown in FIG.
  • the switchgear circuit breaker 2 When the switchgear circuit breaker 2 is disconnected from this state and the ground switch 9 is switched from “OFF” to “ON”, first, the shutter 13 is opened by inserting a key into the first lock 14 and unlocking it. Therefore, the shutter 13 is slid by the knob 20 and opened.
  • the operation handle 11 is inserted into the insertion opening 12 to rotate the operation shaft 10, and the ground switch 9 is turned “ON”. In conjunction with this, the cam shaft 16 and the first cam 17 also rotate.
  • the operation handle 11 is removed from the insertion port 12, the shutter 13 is closed, and the second lock 15 is locked (FIG. 7B).
  • each lock 14 and 15 is normally performed by inserting the key into the lock and rotating the key with one hand. If an excessive force is applied forcibly during the latch operation due to an erroneous key operation, an excessive force for the latch operation is applied toward the center of the cam shaft 16. Since the camshaft 16 is firmly fixed by a bearing or the like, even if an excessive force is applied due to an erroneous operation of the key, the camshaft 16 will not be damaged, and the camshaft 16 can be easily increased in strength if necessary. it can.
  • FIG. 8 is an explanatory diagram showing the relationship between the open / close state of the shutter and grounding switch of the interlock mechanism portion of the switch gear and the rotational position of the cam when there is one lock.
  • (A) (b) is a figure which shows the relationship between the opening-and-closing position of the shutter 13, and the rotation position of the 2nd cam 23, (a) is the shutter 13 "open”, (b) is the shutter 13 " It shows the time of “Closed”.
  • FIG. 9 is a figure explaining the rotation position of both cams, and the locking relationship of a lock. Note that the lock described here uses a lock that is unlocked in the locked state and cannot be removed in the unlocked state, and one key is used for the lock 14. However, if you do not need an interlock and simply lock the ground switch in the “on” or “off” state, the key can be removed in either the locked or unlocked state. Good.
  • the second cam 23 that rotates in conjunction with the movement of the shutter 13 has a recess 23a formed at one location in the circumferential direction.
  • the recess 22a of the first cam 22 that rotates in conjunction with the rotation of the operation shaft 10 is also provided at only one location in the circumferential direction.
  • Only one lock that locks the movement of both cams is provided at a position corresponding to the first lock described so far. Although there is only one lock, it will be referred to as the first lock 14 for the sake of convenience together with the description so far.
  • the concave portion 22 a of the first cam 22 and the concave portion 23 a of the second cam 23 are both located at positions opposite to the latch 14 a of the first lock 14. Only when can the first lock 14 be locked. That is, the first lock 14 can be locked when the ground switch 9 is “ON” and the shutter 13 is “CLOSED”. When the shutter 13 is open, the first lock 14 cannot be locked, and when the first lock 14 is locked, the shutter 13 cannot be opened, so that the ground switch 9 cannot be operated.
  • the grounding switch is “on”, that is, grounded, and the key is removed so that it can be removed when working under grounding conditions during maintenance and inspection. If an interlock that can enter the switchgear is assembled using a key, the grounding can be reliably performed and the grounding state can be maintained.
  • the ground switch 9 is locked when it is “ON”. However, the position of the recess 22a of the first cam 22 is changed so that the ground switch 9 is “OFF”. It is also possible to lock it when
  • the cam shaft 16 to which both cams are attached is provided separately from the operation shaft 10 of the ground switch 9, but the cam is directly attached to the operation shaft 10 of the ground switch 9.
  • the key interlock may be configured. In that case, the camshaft is unnecessary, and further space saving is possible.
  • the switching device to be interlocked is a grounding switch.
  • the present invention is not limited to this, and any switching device that is housed in a switchgear and is manually operated, for example, It can also be applied to disconnectors.
  • the opening / closing device and its operation shaft are accommodated inside the housing, and the operation handle is rotated by inserting the operation handle from the outside of the housing.
  • a switchgear configured to turn on and off an opening / closing device, a shutter that opens and closes an insertion port of an operation handle formed in a housing, a first cam that rotates in conjunction with rotation of an operation shaft, and a shutter A second cam that rotates in conjunction with the opening / closing operation of the first cam, and a recess provided on the outer periphery of the first cam and the second cam when the opening / closing device is “on” or “off” and the shutter is “closed”.
  • the key interlock mechanism having a lock that can be locked by engaging the latch Since the key interlock mechanism having a lock that can be locked by engaging the latch is provided, the number of parts constituting the key interlock mechanism can be reduced and the cost can be reduced compared to the prior art as in Patent Document 2. Can be achieved. Further, as the number of parts is reduced, the space constituting the key interlock can be reduced, and the space of the device can be saved. In addition, since the rotation of the operating shaft of the opening / closing device can be locked and the insertion of the operating handle can be locked at the same time, it can be avoided that the operating handle is accidentally operated while the operating shaft is locked and the interlock function is impaired. .
  • the opening / closing device when the opening / closing device is “OFF” and the shutter is “CLOSED”, the first lock that can be locked by engaging the latch with the recesses provided in the first cam and the second cam, and the opening / closing device is “ When the shutter is “closed” with “on”, the latches are engaged with the recesses provided in the first cam and the second cam, and the second lock that can be locked is provided.
  • the “OFF” state and the “ON” state can be interlocked, and the above effect can be obtained.
  • FIG. FIG. 10 is an explanatory diagram showing the relationship between the opening / closing position of the shutter of the interlock mechanism portion of the switchgear and the rotational position of the cam according to the second embodiment.
  • (A) shows when the shutter is “open”, and (b) shows when the shutter is “closed”.
  • FIG. 11 is explanatory drawing which shows the relationship between the opening / closing position of the opening / closing apparatus of an interlock mechanism part, and the rotation position of a cam.
  • A) shows when the disconnector described below is “ground”,
  • (b) shows when the disconnector is “disconnected”, and
  • (c) shows when the disconnector is “connected”.
  • the overall configuration of the switch gear is the same as that of FIG.
  • the switching device to be interlocked is a three-point disconnector. That is, it is a disconnector capable of performing “connection”, “disconnection”, and “grounding” of the electric circuit with one switch depending on the position of the blade.
  • the same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.
  • the lock that locks the rotation of the cam includes a third lock 24 in the middle portion thereof. ing.
  • the second cam 26 that rotates in conjunction with the left and right movements of the shutter 13 has recesses 26a to 26c at three positions that are 90 degrees apart in the circumferential direction. 14, second lock 15 and third lock 24 are provided at three locations.
  • the recesses 26a to 26c are positioned as shown in (a), and none of the locks 14, 15, and 24 can be locked. Only when the shutter 13 is “closed”, it can be locked as shown in FIG. However, only one of the locks can actually be locked in relation to the first cam 25 described below.
  • the three-point disconnector that performs “connection”, “disconnection”, and “grounding” of the electric circuit with one switch and the operation shaft are accommodated in the housing.
  • the switch gear configured to operate the three-point disconnector by inserting the operating handle from the outside of the housing and rotating the operating shaft, the opening of the operating handle formed in the housing is opened and closed
  • the three-point disconnector is “connected”, “disconnected”, the first cam that rotates in conjunction with the rotation of the operating shaft, the second cam that rotates in conjunction with the opening / closing operation of the shutter, Three locks that can be locked by engaging the latches with the recesses provided on the outer periphery of the first cam and the second cam when the shutter is in the “closed” state.
  • the first cam is a cam shaft that rotates in conjunction with the rotation of the operation shaft.
  • the second cam is pivotally provided on the cam shaft, and when the concave portions of both cams come to the position facing either latch of the lock, the lock at that position can be locked. Since the two cams are arranged on the same shaft, the key interlock mechanism can be made compact and the installation space can be effectively reduced.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Patch Boards (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Trip Switchboards (AREA)
  • Switch Cases, Indication, And Locking (AREA)
PCT/JP2012/080067 2012-07-13 2012-11-20 Dispositif de commutation Ceased WO2014010110A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN201280074664.1A CN104471806B (zh) 2012-07-13 2012-11-20 开关装置
KR1020157000343A KR101648319B1 (ko) 2012-07-13 2012-11-20 스위치 기어
JP2014524588A JP5818989B2 (ja) 2012-07-13 2012-11-20 スイッチギヤ

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2012-157096 2012-07-13
JP2012157096 2012-07-13

Publications (1)

Publication Number Publication Date
WO2014010110A1 true WO2014010110A1 (fr) 2014-01-16

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PCT/JP2012/080067 Ceased WO2014010110A1 (fr) 2012-07-13 2012-11-20 Dispositif de commutation

Country Status (4)

Country Link
JP (1) JP5818989B2 (fr)
KR (1) KR101648319B1 (fr)
CN (1) CN104471806B (fr)
WO (1) WO2014010110A1 (fr)

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CN104852313A (zh) * 2015-06-08 2015-08-19 楼碧云 一种太阳能电力抽屉柜装置
EP3246931A1 (fr) * 2016-05-19 2017-11-22 General Electric Technology GmbH Mécanisme de verrouillage destiné à un interrupteur de mise à la terre d'une sous-station isolée par gaz
CN109361166A (zh) * 2018-11-28 2019-02-19 浙江正泰电器股份有限公司 断路器的抽屉柜联锁操作机构
US11031754B2 (en) * 2014-06-30 2021-06-08 Eaton Intelligent Power Limited Motor control center units with retractable stabs and interlocks
CN113241281A (zh) * 2021-04-22 2021-08-10 中煤张家口煤矿机械有限责任公司 通用型隔爆外壳机械联锁机构
US11177088B2 (en) 2019-02-22 2021-11-16 Eaton Intelligent Power Limited Motor control center (MCC) units with dual disconnect switches, dual operator handles, retractable power connector and interlocks
US11177636B2 (en) 2016-11-21 2021-11-16 Eaton Intelligent Power Limited Motor control center (MCC) units with slidable shutters
CN114038698A (zh) * 2021-12-24 2022-02-11 江苏电科电气设备有限公司 一种高压柜接地开关与变压器网门联锁方法
CN114141558A (zh) * 2021-11-29 2022-03-04 云南昆宝电气科技有限公司 一种可安全操作的高压柜用智能联锁装置
US11677217B2 (en) 2017-12-20 2023-06-13 Eaton Intelligent Power Limited Motor control center (MCC) units with retractable power connector and interlocks including a power connector position interlock
DE102022210488A1 (de) * 2022-10-04 2024-04-04 Siemens Energy Global GmbH & Co. KG Betätigungseinrichtung zum manuellen Schalten eines Leistungsschalters und Schaltanlage

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CN110047671B (zh) * 2017-01-17 2021-03-05 许继集团有限公司 开关柜程序锁
KR102471510B1 (ko) * 2018-02-06 2022-11-28 엘에스일렉트릭(주) 배전반의 잠금장치

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JP5818989B2 (ja) 2015-11-18

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