CN214152781U

CN214152781U - Electrical cabinet

Info

Publication number: CN214152781U
Application number: CN202120287598.2U
Authority: CN
Inventors: 钱乐笑
Original assignee: Fuerte Electric Equipment Shenzhen Co ltd
Current assignee: Fuerte Electric Equipment Shenzhen Co ltd
Priority date: 2021-02-01
Filing date: 2021-02-01
Publication date: 2021-09-07
Anticipated expiration: 2031-02-01

Abstract

The utility model provides an electrical cabinet, which comprises a cabinet body, wherein the cabinet body comprises a cabinet, an expansion sleeve, an expansion bus bar, a breaker switch main shaft, a breaker switch, a three-station switch main shaft, a three-station switch moving contact and a wire inlet and outlet sleeve, the expansion bus bar is connected with the expansion sleeve, the moving contact of the breaker switch is driven by the breaker switch main shaft, and the moving contact of the breaker switch is kept connected with the expansion bus bar, the three-station switch is arranged on the three-station switch main shaft, the three-station switch moving contact is arranged on the three-station switch, the wire inlet and outlet sleeve is connected with the three-station switch by a branch bus bar, the breaker switch main shaft rotates to connect or disconnect the moving contact of the breaker switch, the three-station switch main shaft rotates to link and rotate the three-station switch, so that the three-station switch moving contact is connected with or disconnected with the static contact of the breaker switch, the power transmission and distribution and the maintenance and replacement of equipment are convenient.

Description

Electrical cabinet

Technical Field

The utility model relates to a regulator cubicle technical field especially relates to a regulator cubicle convenient to maintenance and change of electric energy transmission and distribution and equipment.

Background

Five-prevention interlocking is required to be realized for the electrical cabinet, and five prevention comprises the steps of preventing an on-load brake-off or switch-on isolating switch, preventing a mistaken switch-on/off circuit breaker, preventing a mistaken switch-on when an earthing switch is closed, preventing a mistaken switch-on when the earthing switch is electrified, and preventing the mistaken switch-on/off circuit breaker from entering an electrified chamber. The existing electrical cabinet has various types, complex structure, different chain design, low reliability, incomplete function and incapability of well meeting the application requirement, and the misoperation easily causes safety accidents.

SUMMERY OF THE UTILITY MODEL

In view of the above, in order to solve one of the technical problems in the related art to a certain extent, it is necessary to provide an electrical cabinet which facilitates the transmission and distribution of electrical energy and the maintenance and replacement of equipment.

The utility model provides an electrical cabinet, which comprises a cabinet body, wherein the cabinet body comprises a cabinet, an expanding sleeve, an expanding bus bar, a breaker switch main shaft, a breaker switch, a three-position switch main shaft, a three-position switch moving contact and a wire inlet and outlet sleeve, the expanding bus bar is connected with the expanding sleeve, the moving contact of the breaker switch is driven by the breaker switch main shaft, the moving contact of the breaker switch is kept connected with the expanding bus bar, the three-position switch is arranged on the three-position switch main shaft, the three-position switch moving contact is arranged on the three-position switch, the wire inlet and outlet sleeve is connected with the three-position switch through a branch bus bar, the breaker switch main shaft rotates to connect or disconnect the moving contact of the breaker switch, the three-position switch main shaft rotates to make the three-position switch rotate in a linkage way, so that the moving contact of the three-position switch is connected with or disconnected from the fixed contact of the breaker switch.

Furthermore, the main shaft of the circuit breaker switch is connected with a transmission assembly, the transmission assembly comprises a connecting lever, a flexible busbar, a pull rod and a pressure spring, the connecting lever is fixed on the main shaft of the circuit breaker switch, a sliding groove is formed in the connecting lever, the flexible busbar is connected to the pull rod, the flexible busbar is connected to the extension busbar, a moving contact of the circuit breaker switch is connected to the pull rod, the pull rod is connected to a shaft rod, the shaft rod is arranged in the sliding groove to slide in the sliding groove, the pressure spring is sleeved on the pull rod, an end cover is arranged at the end of the pressure spring, and the pressure spring is fixed on the pull rod in a limiting and pre-tightening mode through the shaft rod. The crank arm rotates along with the main shaft of the breaker switch to change the position of the shaft rod in the sliding groove, when the shaft rod is located at the first position of the sliding groove, a moving contact of the breaker switch is communicated with a fixed contact of the breaker switch, and when the shaft rod is located at the second position of the sliding groove, the moving contact of the breaker switch is disconnected with the fixed contact of the breaker switch.

The electrical cabinet further comprises an interlocking system, the interlocking system comprises a compartment door plate, a grounding switch operating shaft, a baffle, an isolating switch operating shaft and a first interlocking plate, the wire inlet and outlet sleeve is arranged in the compartment, the compartment door plate is used for opening and closing the compartment, the first interlocking plate is connected with an interlocking rod, the first interlocking plate is connected with a first spring, initially, the first spring enables the first interlocking plate to be pre-tightened to enable the first interlocking plate to shield the grounding switch operating shaft, the grounding switch operating shaft is provided with a first cam, the baffle is connected to a rotating shaft, the rotating shaft is coaxially fixed with the three-station switch main shaft, and the rotating shaft is linked with the grounding switch operating shaft and the isolating switch operating shaft; the grounding switch operating shaft is operated to enable the rotating shaft to rotate in a linkage manner so that the baffle plate shields or avoids the isolating switch operating shaft; the isolating switch operating shaft is operated to enable the rotating shaft to rotate in a linkage mode so that the baffle plate can shield or avoid the grounding switch operating shaft; the first cam presses or avoids the first interlocking plate or the interlocking rod along with the rotation of the earthing switch operating shaft, and the current position of the compartment door panel is locked or unlocked by combining a bayonet on the interlocking rod and a clamping position on the compartment door panel.

Furthermore, interlock system still includes circuit breaker closing actuator, circuit breaker separating brake actuator, second interlock board and main shaft, circuit breaker closing actuator with circuit breaker separating brake actuator with the main shaft linkage, the main shaft with circuit breaker switch main shaft is coaxial fixed, be equipped with the second cam on the main shaft, the operation circuit breaker closing actuator makes the main shaft linkage makes the second cam is pushed down the second interlock board is in order to pass through the second interlock board shelters from the isolator operating shaft, the operation circuit breaker separating brake actuator makes the main shaft linkage, makes the second cam with the second interlock board breaks away from, the second interlock board will under the effect of second spring the isolator operating shaft exposes.

Furthermore, a third interlocking plate is arranged between the circuit breaker closing actuator and the isolating switch operating shaft, when the isolating switch operating shaft is operated and is in a switching-off state, the third interlocking plate is driven to enable the circuit breaker closing actuator to be locked and cannot be closed, and when the isolating switch operating shaft is in a switching-on state, the third interlocking plate is separated from the circuit breaker closing actuator to enable the circuit breaker closing actuator to perform a closing operation.

Furthermore, a third cam is arranged on the isolating switch operating shaft, when the isolating switch operating shaft is operated and is in a switching-off state, the third cam enables the third interlocking plate to move upwards to lock the circuit breaker switching-on actuator so as not to execute the switching-on operation, and when the isolating switch operating shaft is in a switching-on state, the third interlocking plate is separated from the circuit breaker switching-on actuator due to the downward self gravity.

According to the scheme, the main shaft of the circuit breaker switch rotates to enable the moving contact and the static contact inside the circuit breaker switch to be connected or disconnected, the three-position switch main shaft rotates to enable the three-position switch to rotate in a linkage mode, the three-position switch acts to be connected or disconnected with the switch static contact arranged on the support, the circuit breaker switch and the three-position switch are operated according to a specific sequence, the on-off state of the electrified main loop of the expanded sleeve, the expanded busbar, the circuit breaker switch, the three-position switch moving contact, the three-position switch and the incoming and outgoing line sleeve can be achieved, and electric energy transmission and distribution and maintenance and replacement of equipment are facilitated.

Drawings

Fig. 1 is a schematic structural diagram of a left viewing angle of the present invention.

Fig. 2 is a schematic structural view of the front view angle of the present invention.

Fig. 3 is an enlarged view of fig. 2 at a.

Fig. 4 is a schematic diagram of the internal structure at the left viewing angle of the present invention.

Fig. 5 is a schematic structural diagram of the interlock system of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention. It is to be understood that the drawings are designed solely for the purposes of illustration and description and not as a definition of the limits of the invention. The connection relationships shown in the drawings are for clarity of description only and do not limit the manner of connection.

It will be understood that 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. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It should also be noted that, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly and can include, for example, fixed connections, removable connections, or integral connections; either mechanically or electrically, and may be internal to both elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

It should be further noted that in the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Referring to fig. 1-4, the present invention provides an electrical cabinet, which includes a cabinet body 100 and an interlock system 200. The cabinet body 100 comprises a cabinet 1, an expansion sleeve 2, an expansion busbar 3, a breaker switch main shaft 4, a breaker switch 5, a three-position switch main shaft 6, a three-position switch 7, a three-position switch moving contact 8 and a wire inlet and outlet sleeve 9. The expansion casing 2, the expansion busbar 3, the breaker switch main shaft 4, the breaker switch 5, the three-position switch main shaft 6, the three-position switch 7 and the three-position switch moving contact 8 are arranged in the cabinet 1, and the incoming and outgoing line casing 9 is arranged in a compartment of the cabinet 1. The cabinet 1 is kept in a fully-closed state, and the environment-friendly insulating medium is filled in the cabinet 1, so that the isolation of components in the cabinet from the external environment is ensured, the influence of the external environment is avoided, and the insulation level and the reliability of the electrical cabinet are improved.

The expansion busbar 3 is connected with the expansion sleeve 2, the breaker switch 5 is installed through a support 51, a moving contact of the breaker switch 5 is connected with the breaker switch spindle 4, and the moving contact of the breaker switch 5 is connected with the expansion busbar 3. The three-position switch 7 is arranged on the three-position switch main shaft 6, the three-position switch moving contact 8 is arranged on the three-position switch 7, and the wire inlet and outlet sleeve 9 is connected with the three-position switch 7 through a branch bus 91. The breaker switch main shaft 4 rotates to enable the moving contact inside the breaker switch 5 to move, so that the moving contact and the static contact inside the breaker switch 5 are connected or disconnected, the three-position switch main shaft 6 rotates to enable the three-position switch 7 to rotate in a linkage mode, and the three-position switch moving contact 8 is connected or disconnected with the static contact 511 of the breaker switch 5 arranged on the support 51.

The three-position switch main shaft 6 can make the three-position switch movable contact 8 be in an isolation switching-on position (position a1 in fig. 2), an isolation or grounding switching-off position (position a2 in fig. 2), and a grounding switching-on position (position A3 in fig. 2).

The breaker switch main shaft 4 and the three-position switch main shaft 6 are operated according to a specific sequence, so that the on-off state of the electrified main loop of the extension sleeve 2, the extension busbar 3, the breaker switch 5, the three-position switch moving contact 8, the three-position switch 7 and the incoming and outgoing line sleeve 9 can be realized, and the electric energy transmission and distribution and the maintenance and replacement of equipment are facilitated.

In this embodiment, the breaker switch 5 is connected to a transmission assembly 50, and the transmission assembly 50 includes a crank arm 501, a soft bus 502, a pull rod 503, and a compression spring 504. The connecting lever 501 is fixed on the main shaft 4 of the circuit breaker switch, a sliding groove 5011 is formed in the connecting lever 501, the sliding groove 5011 is arc-shaped, the middle of the flexible busbar 502 is connected to the pull rod 503, and the edge of the flexible busbar 502 is connected with the expansion busbar 3. A shaft 505 is connected to the pull rod 503, and the shaft 505 is disposed in the sliding slot 5011 to slide in the sliding slot 5011. The compression spring 504 is sleeved on the pull rod 503, and an end cover is arranged at the end part of the compression spring, and the compression spring is fixed on the pull rod 503 through a shaft rod 505 in a limiting and pre-tightening manner. The crank arm 501 rotates along with the breaker switch main shaft 4, the shaft rod 505 can correspondingly slide in the sliding groove 5011, and a structure of rotating to linear motion is adopted in the design, so that the pull rod 503 moves linearly up and down to drive the moving contact of the breaker switch 5 arranged at the lower end of the pull rod 503, and the moving contact and the static contact of the breaker switch 5 are contacted and separated, so that the on-off of the main live circuit at the section is realized.

The distance between the first position of the sliding slot 5011 and the breaker switch main shaft 4 is greater than the distance between the second position of the sliding slot 5011 and the breaker switch main shaft 4, when the shaft rod 505 slides from the second position of the sliding slot 5011 to the first position (i.e. the position shown in the figure), the pull rod 503 moves linearly downwards, the moving contact and the stationary contact of the breaker switch 5 are contacted to communicate with the section of charged circuit, the compression spring 504 is compressed, and the generated elastic force provides enough pressure for the moving contact and the stationary contact of the breaker switch 5 to reduce the contact resistance between the moving contact and the stationary contact; when the shaft 505 slides from the first position to the second position of the sliding slot 5011 (i.e. the other end of the sliding slot 5011), the pull rod 503 moves linearly upward, the spring restores the pre-tightening state, the moving contact and the static contact are separated, and the section of the live circuit is disconnected.

Referring to fig. 5, the interlock system 200 includes a compartment door panel 10, a ground switch operating shaft 11, a shutter 12, an isolation switch operating shaft 13, and a first interlock plate 14. The in-out line sleeve 9 is arranged in the compartment, and the compartment door plate 10 is used for opening and closing the compartment. The first interlocking plate 14 is connected with an interlocking rod 15, a bayonet 151 is arranged on the interlocking rod 15, the first interlocking plate 14 is connected with a first spring 16, the interlocking rod 15 is sleeved with the first spring 16, and a clamping position corresponding to the bayonet 151 is arranged on the compartment door panel 10. Be equipped with first cam 111 on the earthing switch operating axis 11, baffle 12 is connected in pivot 17, pivot 17 with earthing switch operating axis 11 and with isolator operating axis 13 linkage, pivot 17 with three-position switch main shaft 6 is coaxial fixed, three-position switch main shaft 6 with pivot 17 is together rotated.

Initially, the earthing switch operating shaft 11 is in an earthing switch-on position, the baffle 12 shields the disconnecting switch operating shaft 13, the first interlocking plate 14 and the interlocking rod 1 are jacked up under a natural state of the first spring 16, the earthing switch operating shaft 11 is shielded by the first interlocking plate 14, and an earthing switch switching-off operation cannot be performed; the blocking position on the compartment door panel 10 is aligned with the bayonet 151 on the interlocking rod 15, the first spring 16 is compressed under the action of the gravity of the compartment door panel 10 and overcomes the elastic force of the first spring 16, the first interlocking plate 14 and the interlocking rod 15 synchronously move downwards, the baffle plate 12 releases the shielding of the earthing switch operating shaft 11, so that the earthing switch can be opened, the compartment door panel 10 is lifted up and taken out, and the locking is recovered under the action of the first spring 16.

The grounding switch operating shaft 11 is operated to a switching-on position, so that the rotating shaft 17 and the baffle 12 can be linked and rotate anticlockwise to shield the isolating switch operating shaft 13, and the isolating switch cannot be switched on or off; the earthing switch operating shaft 11 is operated to the opening position, the baffle 12 is moved away from the disconnecting switch operating shaft 13 (shown in the figure position), the shielding of the disconnecting switch operating shaft 11 is removed, and the disconnecting switch can be switched on and off. And, the first cam 111 rotates to the position shown in the figure, presses the first interlocking plate 14, the interlocking rod 15 is locked at the position shown in the figure, the clamping position of the compartment door panel 10 is clamped in the clamping opening 151 of the interlocking rod 15, the compartment door panel 10 cannot be lifted up and opened, the interlocking of the grounding switch and the door panel is realized, and the interlocking requirement of preventing the mistaken entering of the electrified interval is met.

The disconnecting switch operating shaft 13 is operated to enable the disconnecting switch to be in a switching-on position, the rotating shaft 17 and the baffle 12 are linked to rotate clockwise, the grounding switch operating shaft 11 is shielded by the baffle 12, the grounding switch cannot be switched on and off, and the interlocking function of the disconnecting switch and the grounding switch is realized through the linkage relation of the disconnecting switch operating shaft 11, the baffle 12 and the grounding switch, so that the interlocking requirement of preventing power transmission with a ground wire (or a switching-on position of the grounding switch) is met.

Interlock system 200 still includes circuit breaker closing actuator 18, circuit breaker opening actuator 19, second interlock board 20 and main shaft 21, circuit breaker closing actuator 18 with circuit breaker opening actuator 19 with the linkage of main shaft 21, main shaft 21 with circuit breaker switch main shaft 4 is coaxial fixed. The main shaft 21 is provided with a second cam 211, the circuit breaker closing actuator 18 is operated to enable the main shaft 21 to be linked, the second cam 211 presses the second interlocking plate 20, the second interlocking plate 20 slides downwards to overcome the pulling force of the second spring 22, the second interlocking plate 20 shields the isolating switch operating shaft 13, and the isolating switch cannot be opened and closed, so that the interlocking requirement of preventing the isolating switch from being closed and opened with load is met; the circuit breaker opening actuator 19 is operated to cause the main shaft 21 to be interlocked, the second cam 211 is disengaged from the second interlock plate 20, and the second interlock plate 20 exposes the disconnecting switch operating shaft 13 under the action of the second spring 22.

A third interlocking plate 23 is further arranged between the circuit breaker closing actuator 18 and the isolating switch operating shaft 13 (the third interlocking plate 23 is located on the rear side of the second interlocking plate 20), when the isolating switch operating shaft 13 is operated to enable the isolating switch to be in an opening state, the third interlocking plate 23 is driven to enable the circuit breaker closing actuator 18 to be locked, the circuit breaker cannot be closed, and the interlocking requirement of preventing the circuit breaker from being opened and closed by mistake and preventing power transmission with a ground wire (or a grounding switch from being closed) is met; the disconnecting switch operating shaft 13 is operated to make the disconnecting switch in a closing state, and the third interlocking plate 23 is separated from the circuit breaker closing actuator 18 to make the circuit breaker closing actuator 18 execute a closing operation. Specifically, a third cam (not shown) is arranged on the disconnecting switch operating shaft 13, when the disconnecting switch operating shaft 13 is operated, the disconnecting switch is in a switching-off state, the third cam jacks up the third interlocking plate 23, so that the third interlocking plate 23 moves upwards to lock the circuit breaker switching-on actuator 18, when the disconnecting switch operating shaft 13 is operated, the disconnecting switch is in a switching-on state, and the third interlocking plate 23 moves downwards due to self gravity to release the locking of the circuit breaker switching-on actuator 18.

The utility model discloses an application nimble design combination, solve the complicated and important interlocking relation between earthing switch and door plant, isolator and earthing switch, isolator and circuit breaker 5, the overall arrangement is ingenious, simple structure, and barrier propterty is good, realizes interlocking effect through pure mechanical system, greatly reduced the probability that the maloperation takes place, increase equipment life, provide reliable personal safety guarantee for operating personnel.

Throughout the description and claims of this application, the words "comprise/comprises" and the words "have/includes" and variations of these are used to specify the presence of stated features, values, steps or components but do not preclude the presence or addition of one or more other features, values, steps, components or groups thereof.

Some features of the invention, which are, for clarity, described in the context of separate embodiments, may also be provided in combination in a single embodiment. Conversely, certain features of the invention, which are, for brevity, described in the context of a single embodiment, may also be provided separately or in any suitable combination in different embodiments.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention should be included in the present invention.

Claims

1. An electric cabinet is characterized by comprising a cabinet body, wherein the cabinet body comprises a cabinet, an expanding sleeve, an expanding bus bar, a breaker switch main shaft, a breaker switch, a three-position switch main shaft, a three-position switch moving contact and a wire inlet and outlet sleeve, the expanding bus bar is connected with the expanding sleeve, the moving contact of the breaker switch is driven by the breaker switch main shaft, the moving contact of the breaker switch is kept connected with the expanding bus bar, the three-position switch is arranged on the three-position switch main shaft, the three-position switch moving contact is arranged on the three-position switch, the wire inlet and outlet sleeve is connected with the three-position switch through a branch bus bar, the breaker switch main shaft rotates to connect or disconnect the moving and static contacts of the breaker switch, the three-position switch main shaft rotates to enable the three-position switch to rotate in a linkage manner, so that the moving contact of the three-position switch is connected with or disconnected from the fixed contact of the breaker switch.

2. The electrical cabinet according to claim 1, wherein the breaker switch main shaft is connected to a transmission assembly, the transmission assembly includes a crank arm, a flexible busbar, a pull rod, and a compression spring, the crank arm is fixed on the breaker switch main shaft, the crank arm is provided with a chute, the flexible busbar is connected to the pull rod and keeps connected to the extended busbar, a moving contact of the breaker switch is connected to the pull rod, the pull rod is connected to a shaft rod, the shaft rod is arranged in the chute to slide in the chute, the compression spring is sleeved on the pull rod and has an end cap at an end, the compression spring is fixed on the pull rod by the shaft rod with a limiting pre-tightening, the crank arm rotates along with the breaker switch main shaft to change a position of the shaft rod in the chute, when the shaft rod is at the first position of the chute, the moving contact of the breaker switch is communicated with a static contact of the breaker switch, when the shaft lever is located at the second position of the sliding groove, the moving contact of the breaker switch is disconnected with the fixed contact of the breaker switch.

3. The electrical cabinet according to claim 1, further comprising an interlocking system, wherein the interlocking system comprises a compartment door panel, an earthing switch operating shaft, a baffle, an isolating switch operating shaft, and a first interlocking plate, the wire inlet and outlet bushing is disposed in the compartment, the compartment door panel is used for opening and closing the compartment, the first interlocking plate is connected with an interlocking rod, the first interlocking plate is connected with a first spring, initially, the first spring pre-tensions the first interlocking plate to enable the first interlocking plate to shield the earthing switch operating shaft, the earthing switch operating shaft is provided with a first cam, the baffle is connected to a rotating shaft, the rotating shaft is coaxially fixed with the three-position switch main shaft, and the rotating shaft is linked with the earthing switch operating shaft and the isolating switch operating shaft; the grounding switch operating shaft is operated to enable the rotating shaft to rotate in a linkage manner so that the baffle plate shields or avoids the isolating switch operating shaft; the isolating switch operating shaft is operated to enable the rotating shaft to rotate in a linkage mode so that the baffle plate can shield or avoid the grounding switch operating shaft; the first cam presses or avoids the first interlocking plate or the interlocking rod along with the rotation of the earthing switch operating shaft, and the current position of the compartment door panel is locked or unlocked by combining a bayonet on the interlocking rod and a clamping position on the compartment door panel.

4. The electrical cabinet according to claim 3, wherein the interlock system further includes a circuit breaker closing actuator, a circuit breaker opening actuator, a second interlock plate, and a main shaft, the circuit breaker closing actuator and the circuit breaker opening actuator are linked with the main shaft, the main shaft is coaxially fixed to the circuit breaker switch main shaft, a second cam is disposed on the main shaft, the circuit breaker closing actuator is operated to link the main shaft, the second cam presses the second interlock plate to shield the isolating switch operating shaft through the second interlock plate, the circuit breaker opening actuator is operated to link the main shaft, the second cam is disengaged from the second interlock plate, and the second interlock plate exposes the isolating switch operating shaft under the action of a second spring.

5. The electrical cabinet according to claim 4, wherein a third interlocking plate is further disposed between the circuit breaker closing actuator and the isolating switch operating shaft, when the isolating switch operating shaft is operated to be in an opening state, the third interlocking plate is driven to lock the circuit breaker closing actuator and prevent the circuit breaker closing actuator from closing, and when the isolating switch operating shaft is in a closing state, the third interlocking plate is separated from the circuit breaker closing actuator to enable the circuit breaker closing actuator to perform a closing operation.

6. The electrical cabinet according to claim 5, wherein a third cam is disposed on the disconnecting switch operating shaft, when the disconnecting switch operating shaft is operated to be in an open state, the third cam moves the third locking plate upward to lock the circuit breaker closing actuator and disable a closing operation, and when the disconnecting switch operating shaft is in a closing state, the third locking plate moves downward due to its own weight to be disengaged from the circuit breaker closing actuator.