CN211858450U - Interlocking device for switch cabinet and switch cabinet comprising same - Google Patents

Interlocking device for switch cabinet and switch cabinet comprising same Download PDF

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Publication number
CN211858450U
CN211858450U CN201922469755.7U CN201922469755U CN211858450U CN 211858450 U CN211858450 U CN 211858450U CN 201922469755 U CN201922469755 U CN 201922469755U CN 211858450 U CN211858450 U CN 211858450U
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China
Prior art keywords
interlock
grounding
interlocking
isolation
circuit breaker
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Active
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CN201922469755.7U
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Chinese (zh)
Inventor
杨雄伟
王刚
王连济
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Schneider Electric Industries SAS
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Schneider Electric Industries SAS
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Priority to CN201922469755.7U priority Critical patent/CN211858450U/en
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Abstract

A cubical switchboard that is used for interlock of cubical switchboard and includes this interlock, the cubical switchboard is including keeping apart and earthing switch operating device and circuit breaker switch operating device, includes isolation operation spare and earthing operation spare respectively, and circuit breaker switch operating device is including the lock that can prevent the circuit breaker to close a floodgate and divides a piece, and interlock includes: the first isolation interlocking part is connected to the interlocking handle and can be driven by the interlocking handle to move between an isolation unlocking position allowing the isolation switching-on and switching-off operation and an isolation locking position preventing the isolation switching-on and switching-off operation. When interlock can realize the circuit breaker closing, can not operate isolation and ground connection, and when the operation was kept apart and ground connection, the circuit breaker was locked in the position of separating brake, the guarantee personal safety.

Description

Interlocking device for switch cabinet and switch cabinet comprising same
Technical Field
The utility model relates to a connection is interlock between isolation and earthing switch operating device and circuit breaker switch operating device for cubical switchboard. The utility model discloses still relate to the cubical switchboard including this interlock.
Background
According to the requirements of the national grid company safety management regulation for preventing electrical misoperation (national grid safety supervision No. 2006) 904), the contents of electrical five-prevention are as follows: the isolating switch (the circuit breaker, the load switch and the contactor can not be operated under the closing state) is prevented from being opened and closed with load; the circuit breaker, the load switch and the contactor are prevented from being switched off or switched on by mistake (only the operation instruction corresponds to the operation equipment, the operated equipment can be operated); and the circuit breaker and the load switch are prevented from being opened and closed when the grounding switch is in a closed position. (only when the grounding switch is in an opening state, the isolating switch or the handcart can be closed to reach the working position, and the breaker and the load switch can be operated to be closed); preventing erroneous engagement of the ground switch when energized. (only in the opening state of the breaker, the disconnecting switch or the handcart can be operated to retreat from the working position to the testing position, and the grounding switch can be closed); prevent the false entering into the charging chamber. (access to the compartment can be gained by opening the door only if the compartment is not charged).
In order to avoid the misoperation of isolation and grounding in the use process of the switch cabinet, the field needs to provide a novel interlocking device for the breaker switch operating mechanism and the isolation and grounding switch operating mechanism in the switch cabinet, so as to prevent the charged disconnecting switch and the charged grounding switch from being switched by mistake.
SUMMERY OF THE UTILITY MODEL
In one aspect, the utility model provides an interlock for cubical switchboard, the cubical switchboard is including isolation and earthing switch operating device and circuit breaker switch operating device, isolation and earthing switch operating device including rotationally install on isolation and earthing switch operating device and can be operated in order to keep apart with the isolation operation spare and the ground connection operating device of ground connection divide-shut brake operation respectively, circuit breaker switch operating device is including having the lock that prevents the circuit breaker combined floodgate and separating a latched position and the lock that allows the circuit breaker combined floodgate and separating a unblock position's lock, interlock connects between isolation and earthing switch operating device and circuit breaker switch operating device and includes: an interlock handle operable to swing between a first position and a second position and capable of driving movement of the locking member, a first ground interlock, which is connected to the interlock handle and can be driven by the interlock handle to move between a ground unlocking position for allowing the ground opening and closing operation and a ground locking position for preventing the ground opening and closing operation, a first isolation interlock, which is connected to the interlock handle and can be driven by the interlock handle to move between an isolation unlocking position for allowing the isolation opening and closing operation and an isolation locking position for preventing the isolation opening and closing operation, when the interlock handle is operated to the first position, the first grounding interlock is driven to its grounding unlocked position, the first isolating interlock is driven to its isolating unlocked position, therefore, the isolation and grounding switching-on and switching-off operations are allowed to be carried out, and meanwhile, the locking and switching-off piece is driven to the locking position of the locking and switching-off piece by the interlocking handle, so that the circuit breaker is forced to be locked in a switching-off state and cannot be switched on; when the interlocking handle is operated to the second position, the first grounding interlocking piece is driven to the grounding locking position of the first grounding interlocking piece, the first isolation interlocking piece is driven to the isolation locking position of the first isolation interlocking piece, so that isolation and grounding switching-on and switching-off operations cannot be carried out, and meanwhile, the locking and switching-off piece is driven to the locking and switching-off piece unlocking position by the interlocking handle, so that the circuit breaker is allowed to be switched on.
According to a preferred embodiment, the interlock further comprises: a circuit breaker interlock rotatably mounted to the circuit breaker switch operating mechanism and having one end connected to the interlock handle, wherein the lock sub) is biased against the other end of the circuit breaker interlock such that when the interlock handle is operated to a first position, the circuit breaker interlock is driven to rotate to urge the lock sub to its lock sub locking position; and a connecting member having one end movably mounted on the interlock handle and the other end fixed to the first grounding interlock member such that the first grounding interlock member moves along with the interlock handle.
According to a preferred embodiment, the first isolating interlock is rotatably connected to the first grounding interlock to follow movement thereof and includes a connecting pin, and the interlock further includes: a second isolation interlock rotatably mounted on the ground and isolation switch operating mechanism and including an elongated hole having a first end and a second end opposite thereto, the connecting pin being movable in the elongated hole; a third isolation interlocking member having one end rotatably installed on the isolation operation member and the other end rotatably installed on the second isolation interlocking member; when the interlocking handle is positioned at the first position, the connecting pin is positioned at an isolation unlocking position and is close to the second end of the elongated hole, when the isolation operation piece is rotated to be opened and kept at the opening position, the third isolation interlocking piece is driven to move, the second isolation interlocking piece can follow the third isolation interlocking piece to rotate along the elongated hole until the first end of the elongated hole abuts against the connecting pin, and therefore the interlocking handle cannot move towards the second position, so that the circuit breaker is forced to be locked in a switching-off state; under the condition that the interlocking handle is located the second position, the connecting pin is located and keeps apart the latched position, and the connecting pin supports the first end in slotted hole this moment for the second keeps apart the interlocking piece and can't be driven rotatoryly by third isolation interlocking piece, hinders to keep apart the operating parts and opens, thereby can't operate isolation divide-shut brake, maloperation isolator when preventing the circuit breaker from closing a floodgate.
According to a preferred embodiment, the interlock further comprises: a second grounding interlock rotatably mounted on the isolating and grounding switch mechanism and including a shutter; a third grounding interlocking member having one end rotatably mounted on the grounding operation member and the other end rotatably mounted on the second grounding interlocking member; wherein the first grounding interlock piece includes a protrusion portion protrudingly extending toward the second grounding interlock piece; when the interlocking handle is located at the first position, when the grounding operation piece is rotated to be opened and kept at the opening position, the third grounding interlocking piece is driven to move, and the second grounding interlocking piece rotates along with the third grounding interlocking piece so that the blocking piece rotates from the position allowing the first grounding interlocking piece to move to the position blocking the first grounding interlocking piece to prevent the interlocking handle from moving to the second position and force the circuit breaker to be kept in the opening state; under the condition that the interlocking handle is located the second position, the grounding interlocking rod is located the ground connection latched position, and the protruding portion supports the one end of separation blade and makes it can't be driven by third ground connection interlocking piece and rotate, hinders the ground connection operating part and opens to the ground connection divide-shut brake of unable operation prevents the maloperation earthing switch when the circuit breaker closes a floodgate.
According to a preferred embodiment, the connecting piece is provided with a stop; when the circuit breaker is switched on, the main shaft interlocking piece on the main shaft of the circuit breaker rotates from the position allowing the stopping part to move to the position blocking the stopping part from moving, so that the interlocking handle is prevented from moving to the first position.
According to a preferred embodiment, the connecting piece is provided with an oblong hole which can cooperate with a pin fixed to the circuit breaker switch operating mechanism, so that the connecting piece is slidably mounted on the circuit breaker switch operating mechanism.
On the other hand, the utility model provides a cubical switchboard, it includes foretell interlock that is used for the cubical switchboard.
The utility model provides an interlock for cubical switchboard can realize when the circuit breaker closes a floodgate, can not operate isolation and ground connection, and when the operation was kept apart and ground connection, the circuit breaker was locked in the separating brake position, realizes preventing the maloperation from this, ensures personal safety.
Drawings
The above and other features and advantages of the present invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings, and the following description and drawings are given for illustrative purposes only, and do not limit the scope of the present invention in any way, wherein:
fig. 1 is a side view of the interlock device of the present invention with the interlock handle in a second position;
fig. 2 is a side view of the interlock device of the present invention with the interlock handle in a first position;
fig. 3 is an elevational view of the interlock device of the present invention with the interlock handle in a first position;
fig. 4 is an elevational view of the interlock device of the present invention with the interlock handle in a first position and the isolation operator open;
fig. 5 is a side view showing the interlock device of the present invention, wherein the interlock handle is in the first position and the ground operating member is open;
fig. 6 is an elevational view of the interlock device of the present invention with the interlock handle in a second position;
fig. 7 is a side view of the interlock device of the present invention with the interlock handle in a second position;
fig. 8 is a side view of the interlock device of the present invention with the interlock handle in the first position and the circuit breaker in the closed position.
Detailed Description
The foregoing and other technical contents, features and advantages of the present invention will be apparent from the following detailed description of the embodiments with reference to the accompanying drawings. The following description contains various specific details to aid in this understanding, but these details should be construed as merely exemplary. Moreover, descriptions of well-known functions and constructions may be omitted for clarity and conciseness.
Throughout the description and claims of this specification, the word "comprise", and variations such as "comprises" and "comprising", means "including but not limited to", and is not intended to exclude other components, integers or steps. It is to be understood that the singular forms "a," "an," and "the" include plural referents unless the context clearly dictates otherwise. In the present application, the expression "or" encompasses any and all combinations of the words listed together.
Although various elements of the present invention may be described using expressions such as "first" and "second," they are not intended to limit the respective elements. The above expressions are not intended to limit the order or importance of the corresponding elements. The above description is intended to distinguish one element from another, and "a first element" may be written as "a second element", and similarly "a second element" may be written as "a first element", without departing from the scope of the present invention. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. In addition, the directional terms such as "upper", "lower", "left", "right", "clockwise", "counterclockwise" and the like mentioned herein are used only for indicating relative positional relationships with respect to the illustrations of the drawings, and when the absolute position of the object to be described is changed, the relative positional relationships may be changed accordingly.
The following describes the interlocking device for a switch cabinet with reference to fig. 1 to 8, and the main functions are to prevent misoperation of isolation and grounding, prevent the load from separating and closing the isolating switch, and prevent the grounding switch from being mistakenly closed when the switch is electrified.
The switch cabinet comprises an isolation and grounding switch operating mechanism 100 and a breaker switch operating mechanism 200, wherein the isolation and grounding switch operating mechanism 100 realizes isolation and grounding operation, and the breaker switch operating mechanism 200 realizes breaker opening and closing operation. When an operating component (such as an operating cover plate) is rotated to be opened, an operating handle can be inserted to perform grounding and isolation switching-on and switching-off operations. The illustrated isolating and grounding switch operating mechanism 100 includes an isolating operating member 110 and a grounding operating member 120 rotatably mounted on the isolating and grounding switch operating mechanism and operable to perform isolating and grounding switching on and off operations, respectively. The circuit breaker switch operating mechanism 200 includes a locking part 210 having a locking part locking position preventing the circuit breaker from being closed and a locking part unlocking position allowing the circuit breaker to be closed. The breaker switch operating mechanism shown in the figure is a breaker switch operating mechanism which is widely used at present, and when the locking and unlocking piece is jacked up, the breaker can be locked in an opening state and can not be closed.
The interlock device 300 is connected between the disconnecting and grounding switch operating mechanism 100 and the circuit breaker switch operating mechanism 200. The interlock device 300 includes an interlock handle 310 that is operable to swing between a first position (an upper position as shown in fig. 1) and a second position (a lower position as shown in fig. 2) and that is capable of driving movement of the locking segments. The handle 300 can be operated up and down as shown and held in both up and down positions by the action of a spring force.
Interlock device 300 includes a first ground interlock 321, which may be in the form of a lever as shown, connected to interlock handle 310 and capable of being actuated by it to move between a ground unlocking position to permit ground opening and closing operations and a ground locking position to prevent ground opening and closing operations; and a first isolation interlocking member 331, which may have a long rod shape as shown, is connected to and can be driven by the interlocking handle 310 to move between an isolation unlocking position, which allows the isolation opening and closing operation, and an isolation locking position, which prevents the isolation opening and closing operation. Referring to fig. 3, in general, when the interlock handle 310 is operated to the first position, the first grounding interlock 321 is driven to its ground unlocking position, the first isolation interlock 331 is driven to its isolation unlocking position, thereby allowing isolation and ground opening and closing operations, and the lock separation 220 is driven to the lock separation locking position by the interlock handle 310, forcing the circuit breaker to be locked in the opening state and unable to be closed; when the interlock handle 310 is operated to the second position, the first grounding interlock 321 is driven to its grounding locking position, the first isolating interlock 331 is driven to its isolating locking position, thereby disabling the isolating and grounding opening and closing operations, and the opening and closing lock 210 is driven to the opening and closing lock unlocking position by the interlock handle 310, allowing the circuit breaker to be closed.
The first isolation interlocking member 331 is rotatably connected to the grounding interlocking member 320 to move together therewith, and includes a connection pin 3311 fixed to the first isolation interlocking member 331. The interlock device 300 also includes second and third isolation interlocks. The right end of the second isolating interlock 332 is rotatably installed on the ground and isolating switch operating mechanism 200, and the second isolating interlock 332 includes an elongated hole 3321 having a first end (upper end shown) 33211 and a second end (lower end shown) 33212 opposite thereto, and the connecting pin 3311 is movable in the elongated hole 3321. The third isolation interlock 333 may have a shape of a bent bar as shown in the drawing, and the left end thereof is rotatably installed on the isolation operation member 110 and the right end thereof is rotatably installed at the leftmost end of the second isolation interlock 332, and when the isolation operation member 110 is operated to rotate clockwise, the third isolation interlock 333 is moved, thereby rotating the second isolation interlock 332 counterclockwise.
The interlock device 300 includes a circuit breaker interlock 340, which may be in the form of a lever, that is rotatably mounted to the circuit breaker switch operating mechanism 200 and connected at one end to the interlock handle 310. The lock sub 220 is biased against the other end of the circuit breaker interlock 340 such that when the interlock handle 310 is operated to the first position, the circuit breaker interlock 340 is driven to rotate to push the lock sub 220 to its lock sub locking position.
The interlock device 300 further includes a connector 350 having one end movably mounted on the interlock handle 310 and the other end fixed to the grounding interlock lever 320 such that the first grounding interlock lever 321 moves along with the interlock handle 310. The attachment 350 may be a slide as shown. A plurality of oblong holes 352 are provided on the link 350, which can be engaged with the pins 230 fixed to the breaker-switch operating mechanism 200, so that the link 350 is slidably mounted on the breaker-switch operating mechanism 200. When the interlock handle 310 is operated up and down, the connection member 350 slides up and down along with the handle, thereby moving the first grounding interlock 321 up and down.
As shown in fig. 4, in the case that the interlock handle 310 is located at the first position (lower position shown), the connecting pin 3311 is located at the isolation unlocking position and near the second end 33212 of the elongated hole 3321, when the isolation operator 110 is rotated to open and maintain the open position, the third isolation interlock 333 is moved, the second isolation interlock 332 can follow the third isolation interlock 333 and rotate along the elongated hole 3321 until the first end 33211 of the elongated hole abuts against the connecting pin 3311, the connecting pin 3311 is prevented from moving upward, and the interlock handle 310 cannot move upward (second position) accordingly, thereby forcing the circuit breaker to be locked in the open state.
As shown in fig. 6, when the interlock handle 310 is at the second position (the upper position shown), the connecting pin 3311 is on the upper side, i.e., at the isolation locking position, and the connecting pin 3311 abuts against the first end 33211 of the elongated hole 3321, so that the second isolation interlock 332 cannot be rotated by the third isolation interlock 333, and the isolation operation device 110 is blocked from being opened, thereby preventing the isolation switch from being operated by mistake when the circuit breaker is closed, and ensuring personal safety.
The interlock device 300 further includes second and third ground interlocks. The second grounding interlock 322, which may have the shape of the illustrated rotary plate, is rotatably mounted on the isolating and grounding switch mechanism 100, and includes a catch 3221, e.g., in the shape of a sector. The third grounding interlock 323, which may be, for example, a pull rod as shown, has a left end rotatably mounted on the grounding operation member 120 and a right end rotatably mounted on the second grounding interlock 322, and when the insertion handle operates the grounding operation member 120 to rotate clockwise, the second grounding interlock 322 is moved leftward, thereby rotating the third grounding interlock 323 counterclockwise.
The first grounding interlocking member 321 includes a protrusion 3211 protrudingly extending toward the second grounding interlocking member 322. As shown in fig. 5, when the interlock handle 310 is in the first position (lower position), when the ground operating member 120 is operated to open and maintain the open position, the third ground interlocking member 323 is moved, and thus the second ground interlocking member 322 follows the rotation of the third ground interlocking member 323 so that the blocking piece 3221 rotates counterclockwise to the lower position and faces the second ground interlocking member 322, and intervenes in the moving path of the second ground interlocking member 322, that is, rotates from the position allowing the first ground interlocking member 321 to the position blocking the movement of the first 322 ground interlocking member, thereby blocking the upward (second position) movement of the interlock handle 310 and forcing the circuit breaker to maintain the open state.
Referring to fig. 7, when the interlock handle 310 is located at the second position (upper position), the first grounding link lever 321 is located at the grounding locking position, and the upper surface of the protrusion 3211 abuts against the lower end 32211 of the blocking piece 3221, so that the protrusion cannot be driven by the third grounding interlock 323 to rotate counterclockwise, and the grounding operation member 120 is blocked from being opened, thereby the grounding switch cannot be operated, and the grounding switch cannot be operated by mistake during the circuit breaker closing.
As shown in fig. 8, a stopper 351 is further provided on the link 350, and when the interlock handle 310 is located at the second position (upper position), when the circuit breaker is closed, the main shaft interlock piece 220 on the main shaft of the circuit breaker rotates from a position allowing the stopper to move to a position blocking the stopper from moving, i.e., to the left side of the stopper 351 shown in the drawing, thereby blocking the interlock handle 310 from moving upward.
The above description is only an exemplary embodiment of the present invention, and is not intended to limit the scope of the present invention, which is defined by the appended claims. It will be appreciated by persons skilled in the art that variations and modifications may be made to the various embodiments described herein without departing from the scope of the invention as defined by the appended claims. Moreover, descriptions of well-known functions and constructions may be omitted for clarity and conciseness.
Finally, it is also to be understood that certain features of the embodiments may not be necessary to solve a particular technical problem, and thus may be absent or omitted without affecting the solution of the technical problem or the formation of a technical solution; furthermore, the features, elements, and/or functions of one embodiment may be combined, coupled, or coordinated with the features, elements, and/or functions of one or more other embodiments as appropriate, unless the combination, coupling, or coordination is clearly not practical.

Claims (7)

1. An interlock device for a switchgear cabinet, the switchgear cabinet including an isolating and grounding switch operating mechanism and a circuit breaker switch operating mechanism, the isolating and grounding switch operating mechanism including an isolating operating member and a grounding operating member rotatably mounted on the isolating and grounding switch operating mechanism and operable to perform isolating and grounding switching-on and switching-off operations, respectively, the circuit breaker switch operating mechanism including a locking and unlocking member having a locking and unlocking member locking position to prevent a circuit breaker from being switched on and a locking and unlocking member unlocking position to allow the circuit breaker to be switched on,
characterized in that the interlock is connected between the disconnecting and grounding switch operating mechanism and the circuit breaker switch operating mechanism and comprises:
an interlock handle operable to swing between a first position and a second position and to drive movement of the locking segments;
a first grounding interlocking member connected to the interlocking handle and capable of being driven by the interlocking handle to move between a grounding unlocking position for allowing the grounding on-off operation and a grounding locking position for preventing the grounding on-off operation;
a first isolation interlock member connected to the interlock handle and capable of being driven by the interlock handle to move between an isolation unlocking position allowing the isolation opening and closing operation and an isolation locking position preventing the isolation opening and closing operation;
when the interlocking handle is operated to the first position, the first grounding interlocking piece is driven to the grounding unlocking position, the first isolation interlocking piece is driven to the isolation unlocking position, so that isolation and grounding switching-on and switching-off operations are allowed to be carried out, and meanwhile, the locking and switching-off piece is driven to the locking and switching-off piece locking position by the interlocking handle, so that the circuit breaker is locked in a switching-off state and cannot be switched on;
when the interlocking handle is operated to the second position, the first grounding interlocking piece is driven to the grounding locking position of the first grounding interlocking piece, the first isolation interlocking piece is driven to the isolation locking position of the first isolation interlocking piece, so that isolation and grounding switching-on and switching-off operations cannot be carried out, and meanwhile, the locking and switching-off piece is driven to the locking and switching-off piece unlocking position by the interlocking handle, so that the circuit breaker is allowed to be switched on.
2. The interlock device for a switchgear cabinet according to claim 1, characterized in that the interlock device further comprises:
a circuit breaker interlock rotatably mounted to the circuit breaker switch operating mechanism and having one end connected to the interlock handle, wherein the lock split is biased against the other end of the circuit breaker interlock such that when the interlock handle is operated to a first position, the circuit breaker interlock is driven to rotate to urge the lock split to its lock split locking position;
and a connecting member having one end movably mounted on the interlock handle and the other end fixed to the first grounding interlock member such that the first grounding interlock member moves along with the interlock handle.
3. The interlock for a switchgear cabinet according to claim 1, wherein the first isolating interlock is rotatably connected to the first grounding interlock to follow movement thereof and includes a connecting pin, and the interlock further comprises:
a second isolation interlock rotatably mounted on the ground and isolation switch operating mechanism and including an elongated hole having a first end and a second end opposite thereto, the connecting pin being movable in the elongated hole;
a third isolation interlocking member having one end rotatably installed on the isolation operation member and the other end rotatably installed on the second isolation interlocking member;
when the interlocking handle is positioned at the first position, the connecting pin is positioned at an isolation unlocking position and is close to the second end of the elongated hole, when the isolation operation piece is rotated to be opened and kept at the opening position, the third isolation interlocking piece is driven to move, the second isolation interlocking piece can follow the third isolation interlocking piece to rotate along the elongated hole until the first end of the elongated hole abuts against the connecting pin, and therefore the interlocking handle cannot move towards the second position, so that the circuit breaker is forced to be locked in a switching-off state;
under the condition that the interlocking handle is located the second position, the connecting pin is located and keeps apart the latched position, and the connecting pin supports the first end in slotted hole this moment for the second keeps apart the interlocking piece and can't be driven rotatoryly by third isolation interlocking piece, hinders to keep apart the operating parts and opens, thereby can't operate isolation divide-shut brake, maloperation isolator when preventing the circuit breaker from closing a floodgate.
4. The interlock device for a switchgear cabinet according to claim 1, characterized in that the interlock device further comprises:
a second grounding interlock rotatably mounted on the isolating and grounding switch mechanism and including a shutter;
a third grounding interlocking member having one end rotatably mounted on the grounding operation member and the other end rotatably mounted on the second grounding interlocking member;
wherein the first grounding interlock piece includes a protrusion portion protrudingly extending toward the second grounding interlock piece;
when the interlocking handle is located at the first position, when the grounding operation piece is rotated to be opened and kept at the opening position, the third grounding interlocking piece is driven to move, and the second grounding interlocking piece rotates along with the third grounding interlocking piece so that the blocking piece rotates from the position allowing the first grounding interlocking piece to move to the position blocking the first grounding interlocking piece to prevent the interlocking handle from moving to the second position and force the circuit breaker to be kept in the opening state;
under the condition that the interlocking handle is located the second position, the grounding interlocking rod is located the ground connection latched position, and the protruding portion supports the one end of separation blade and makes it can't be driven by third ground connection interlocking piece and rotate, hinders the ground connection operating part and opens to the ground connection divide-shut brake of unable operation prevents the maloperation earthing switch when the circuit breaker closes a floodgate.
5. The interlock device for a switchgear cabinet according to any one of claims 1 to 4, wherein a stopper is provided on the connecting member;
when the circuit breaker is switched on, the main shaft interlocking piece on the main shaft of the circuit breaker rotates from the position allowing the stopping part to move to the position blocking the stopping part from moving, so that the interlocking handle is prevented from moving to the first position.
6. An interlock device for a switchgear cabinet according to any one of claims 1 to 4 wherein the connecting member is provided with an oblong hole which is capable of cooperating with a pin fixed to the circuit breaker switch operating mechanism so that the connecting member is slidably mounted on the circuit breaker switch operating mechanism.
7. A switchgear cabinet, characterized in that it comprises an interlock device for a switchgear cabinet according to any of claims 1 to 6.
CN201922469755.7U 2019-12-31 2019-12-31 Interlocking device for switch cabinet and switch cabinet comprising same Active CN211858450U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201922469755.7U CN211858450U (en) 2019-12-31 2019-12-31 Interlocking device for switch cabinet and switch cabinet comprising same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201922469755.7U CN211858450U (en) 2019-12-31 2019-12-31 Interlocking device for switch cabinet and switch cabinet comprising same

Publications (1)

Publication Number Publication Date
CN211858450U true CN211858450U (en) 2020-11-03

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Application Number Title Priority Date Filing Date
CN201922469755.7U Active CN211858450U (en) 2019-12-31 2019-12-31 Interlocking device for switch cabinet and switch cabinet comprising same

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CN (1) CN211858450U (en)

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