CN116864329B - Switch cabinet with protection function - Google Patents
Switch cabinet with protection function Download PDFInfo
- Publication number
- CN116864329B CN116864329B CN202311133592.XA CN202311133592A CN116864329B CN 116864329 B CN116864329 B CN 116864329B CN 202311133592 A CN202311133592 A CN 202311133592A CN 116864329 B CN116864329 B CN 116864329B
- Authority
- CN
- China
- Prior art keywords
- guide rail
- circuit breaker
- cabinet body
- circuit
- sliding
- 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.)
- Active
Links
- 230000007246 mechanism Effects 0.000 claims abstract description 15
- 238000005452 bending Methods 0.000 claims description 23
- 230000006870 function Effects 0.000 description 7
- 230000009993 protective function Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Classifications
-
- 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
- H01H9/26—Interlocking, locking, or latching mechanisms for interlocking two or more switches
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/1009—Interconnected mechanisms
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/30—Cabinet-type casings; Parts thereof or accessories therefor
- H02B1/32—Mounting of devices therein
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Patch Boards (AREA)
Abstract
The invention is applicable to the field of electrical equipment, and particularly provides a switch cabinet with a protection function, which comprises a cabinet body, wherein a first wiring row and a second wiring row are arranged in the cabinet body, a first circuit breaker and a second circuit breaker are fixed on the side wall of the cabinet body, the first wiring row is connected with a common power supply through the first circuit breaker, the second wiring row is connected with a standby power supply through the second circuit breaker, and both the two circuit breakers are provided with a closing state for switching on a circuit and a breaking state for switching off the circuit; an interlocking mechanism is further arranged in the cabinet body, and the interlocking mechanism enables at most one circuit breaker in the cabinet body to be in a closing state. According to the invention, the interlocking mechanism is arranged to enable at most one breaker in the cabinet body to be in a closing state, so that the situation that two breakers are simultaneously in a closing state, and a circuit is short-circuited due to simultaneous power supply of a common power supply and a standby power supply is avoided, and the safety of the switch cabinet is improved.
Description
Technical Field
The invention relates to the field of electrical equipment, and particularly provides a switch cabinet with a protection function.
Background
At present, a plurality of power supply systems adopt a double-circuit power supply to supply power to the same transformer, wherein one circuit is a common power supply, the other circuit is a standby power supply, and when the common power supply fails, the standby power supply can supplement power in time, so that power supply failure is avoided. In the early power supply system, the common power supply and the standby power supply are not related to each other and are not restricted with each other, and the switching-on of the power supply circuit is completely judged manually, so that grid-connected faults are easily caused by the fact that two power supplies are simultaneously powered by misjudgment.
Disclosure of Invention
Aiming at the defects, the invention provides a switch cabinet with a protection function, and aims to solve the problems that a common power supply and a standby power supply in the prior art are not associated with each other and are not restricted with each other.
In order to achieve the above object, the present invention provides a switch cabinet with protection function, which comprises: the intelligent cabinet temperature control device comprises a cabinet body, wherein a first wiring row and a second wiring row are arranged in the cabinet body, a first circuit breaker and a second circuit breaker are fixed on the side wall of the cabinet body, the first wiring row is connected with a common power supply through the first circuit breaker, the second wiring row is connected with a standby power supply through the second circuit breaker, and the two circuit breakers are respectively provided with a closing state for closing a circuit and a separating state for opening the circuit; an interlocking mechanism is further arranged in the cabinet body, and the interlocking mechanism enables at most one circuit breaker in the cabinet body to be in a closing state.
Preferably, the interlocking mechanism comprises a bending slide plate, and the bending slide plate comprises a first sliding part, a connecting part and a second sliding part; the first sliding part of the bending slide plate is in sliding fit with the first guide rail, the second sliding part of the bending slide plate is in sliding fit with the second guide rail, the first guide rail and the second guide rail are both fixed on the first circuit breaker and the second circuit breaker, and a first notch capable of clamping the first circuit breaker handle and a second notch capable of clamping the second circuit breaker handle are formed in two sides of the second sliding part.
Preferably, a first supporting plate is fixed between the first circuit breaker and the second circuit breaker, the first supporting plate is fixedly connected with the bottom of the first guide rail, and the first supporting plate is also fixedly connected with the bottom of the second guide rail.
Preferably, the first backup pad is fixed with the second backup pad, be fixed with the third guide rail in the second backup pad, third guide rail is provided with two sets of along second backup pad central line symmetry, sliding fit has the third slider in the third guide rail, the one end and the stopper of third slider pass through spring coupling, the stopper is fixed on the third guide rail, the other end of third slider is fixed with the dog, the dog can dispose in square through-hole, square through-hole is seted up at first sliding part middle part.
Preferably, an insulating deflector rod is fixed on the outer wall of the third sliding block.
Preferably, the section of the first guide rail is a dovetail shape, and the part of the first sliding part matched with the first guide rail corresponds to the section shape of the first guide rail; the section of the second guide rail is dovetail, and the part of the second sliding part matched with the second guide rail corresponds to the section shape of the second guide rail.
Preferably, the cabinet body is hinged with a first cabinet door and a second cabinet door, and the first cabinet door is positioned above the second cabinet door.
Preferably, the connecting part of the bending slide plate is fixed with an insulating handle.
The invention aims to provide a switch cabinet with a protection function, which has the following beneficial effects:
(1) according to the invention, the interlocking mechanism is arranged to enable at most one breaker in the cabinet body to be in a closing state, so that the situation that two breakers are simultaneously in a closing state, and a circuit is short-circuited due to simultaneous power supply of a common power supply and a standby power supply is avoided, and the safety of the switch cabinet is improved.
(2) According to the invention, the handles of the first circuit breaker and the second circuit breaker can be clamped in the opening state, so that when an maintainer overhauls a circuit, the power supply can be effectively prevented from being switched on due to accidental switching-on of the circuit breakers, and the maintainer is injured.
Drawings
FIG. 1 is a schematic diagram of a switchgear with protection function;
FIG. 2 is a partial isometric view of a first view of a switchgear cabinet with protective function;
FIG. 3 is a partial isometric view of a second view of a switchgear cabinet with protective function;
fig. 4 is a partial enlarged view at a of fig. 2.
In the figure: 10-a cabinet body; 11-a first line bank; 12-a second line bank; 21-a first circuit breaker; 22-a second circuit breaker; 30-an interlocking mechanism; 31-bending a slide plate; 310-a first slide; 311-connecting part; 312-a second slide; 313-first gap; 314-a second gap; 41-a first guide rail; 42-a second rail; 50-a second support plate; 51-a third rail; 52-a third slider; 53-limiting blocks; 54-springs; 55-stop blocks; 56-square through holes; 57-insulating deflector rod; 71-a first cabinet door; 72-a second cabinet door; 90-insulating handle.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
As shown in fig. 1 and 2, a switch cabinet with protection function comprises a cabinet body 10, a first wiring row 11 and a second wiring row 12 are arranged in the cabinet body 10, a first breaker 21 and a second breaker 22 are fixedly installed on the side wall of the cabinet body 10, the first wiring row 11 is connected with a common power supply through the first breaker 21, the second wiring row 12 is connected with a standby power supply through the second breaker 22, and both breakers are provided with a closing state for closing a circuit and a breaking state for opening the circuit. When the handle of the circuit breaker is upward, the circuit breaker is in a closing state, the circuit can be communicated, and when the handle of the circuit breaker is downward, the circuit breaker is in an opening state, and the circuit is not communicated. An interlocking mechanism 30 is further installed in the cabinet body 10, and the interlocking mechanism 30 enables at most one circuit breaker in the cabinet body 10 to be in a closing state.
According to the invention, the interlocking mechanism 30 is arranged, so that at most one breaker is in a closing state in the cabinet body 10, the condition that two breakers are simultaneously in a closing state is avoided, and the circuit is short-circuited due to simultaneous power supply of a common power supply and a standby power supply, so that the safety of the switch cabinet is improved.
As a further explanation of the present invention, the interlocking mechanism 30 includes a bending slide 31, the bending slide 31 is divided into a first sliding portion 310, a connecting portion 311 and a second sliding portion 312, the first sliding portion 310 is disposed in and moves along a first rail 41, the second sliding portion 312 of the bending slide 31 is disposed in and moves along a second rail 42, one ends of the first rail 41 and the second rail 42 are both fixed on the first circuit breaker 21, the other ends of the first rail 41 and the second rail 42 are both fixed on the second circuit breaker 22, and a first notch 313 capable of clamping the handle of the first circuit breaker 21 and a second notch 314 capable of clamping the handle of the second circuit breaker 22 are opened at both sides of the second sliding portion 312.
The invention limits the movement of the handle of the circuit breaker by arranging the bending slide plate 31 capable of sliding horizontally, when the first wiring row 11 is required to supply power, the handle of the second circuit breaker 22 is downward and is in a switching-off state, and then the bending slide plate 31 is moved to the second circuit breaker 22 until the second notch 314 of the second sliding part 312 completely blocks the handle of the second circuit breaker 22, at the moment, the handle of the second circuit breaker 22 is blocked and can not move any more, and the second wiring row 12 is in a switching-off state.
Similarly, when the second wiring harness 12 is required to be powered, the handle of the first circuit breaker 21 is downward in the open state, and then the bending slide plate 31 is moved toward the first circuit breaker 21 until the first notch 313 of the second sliding portion 312 completely blocks the handle of the first circuit breaker 21, at this time, the handle of the first circuit breaker 21 is blocked and cannot move any more, and the first wiring harness 11 is in the power-off state.
As a further explanation of the present invention, a first support plate 23 is fixed between the first circuit breaker 21 and the second circuit breaker 22, the first support plate 23 is fixedly connected with the bottom of the first guide rail 41, the first support plate 23 is also fixedly connected with the bottom of the second guide rail 42, and the first support plate 23 can simultaneously support the first guide rail 41 and the second guide rail 42, so as to avoid deformation of the first guide rail 41 and the second guide rail 42 when the first guide rail 41 and the second guide rail 42 are used for too long time.
As a further explanation of the present invention, the first support plate 23 is fixed with a second support plate 50, a third guide rail 51 is fixed on the second support plate 50, two groups of third guide rails 51 are symmetrically arranged along the center line of the second support plate 50, two groups of third guide rails 51 are internally provided with a third sliding block 52 moving along the third guide rails, one end of a spring 54 of the third sliding block 52 is fixedly connected, the other end of the spring 54 is fixedly connected with a limiting block 53, the limiting block 53 is fixed at the top of the third guide rail 51, the other end of the third sliding block 52 is fixed with a stop block 55, the stop block 55 can be arranged in a square through hole 56, and the square through hole 56 is opened in the middle of the first sliding part 310.
Wherein, the outer wall of the third slider 52 is fixed with an insulating deflector rod 57.
When the bending slide plate 31 is required to move, the bottom of the stop block 55 is overlapped with the side wall of the first sliding part 310 of the bending slide plate 31, and at this time, the spring 54 is in a compressed state to store elastic potential energy; when the equipment is required to be overhauled, the handles of the first circuit breaker 21 and the second circuit breaker 22 are downwards pulled to an opening state, then the bending slide plate 31 is moved towards the middle of the first supporting plate 23, when the stop block 55 is aligned with the square through hole 56, the stop block 55 enters the square through hole 56 under the action of the elasticity of the spring 54, and at the moment, the handles of the first circuit breaker 21 and the second circuit breaker 22 are respectively blocked by the first notch 313 and the second notch 314, so that the handles of the first circuit breaker 21 and the second circuit breaker 22 are prevented from moving.
According to the invention, the handles of the first breaker 21 and the second breaker 22 can be clamped in the opening state, so that when a maintainer overhauls a circuit, the power supply can be effectively prevented from being switched on due to accidental switching-on of the breakers, and the maintainer is injured.
As a further explanation of the present invention, the first rail 41 has a dovetail shape in cross section, and the portion of the first sliding portion 310 that mates with the first rail 41 corresponds to the cross-sectional shape of the first rail 41; the section of the second rail 42 is dovetail, and the portion of the second sliding portion 312 that mates with the second rail 42 corresponds to the section shape of the second rail 42. The invention can ensure that the bending slide plate 31 can only move left and right by arranging the dovetail-shaped guide rail to be matched with the sliding part, and prevent the sliding part of the bending slide plate 31 from moving away from the guide rail.
As a further explanation of the present invention, the cabinet body 10 is hinged with a first cabinet door 71 and a second cabinet door 72, and the first cabinet door 71 is located above the second cabinet door 72. When an operator needs to toggle the handles of the first breaker 21 and the second breaker 22, the operator can finish the operation by opening only the first cabinet door 71, and does not need to open the whole switch cabinet.
As a further explanation of the present invention, the connecting portion 311 of the buckle slider 31 is fixed with an insulating handle 90. The operator can conveniently pull the bending slide plate 31 by providing the insulating handle 90.
The present invention is not limited to the above-described specific embodiments, and various modifications may be made by those skilled in the art without inventive effort from the above-described concepts, and are within the scope of the present invention.
Claims (2)
1. The switch cabinet with the protection function is characterized by comprising a cabinet body (10), wherein a first wiring row (11) and a second wiring row (12) are arranged in the cabinet body (10), a first circuit breaker (21) and a second circuit breaker (22) are fixed on the side wall of the cabinet body (10), the first wiring row (11) is connected with a common power supply through the first circuit breaker (21), the second wiring row (12) is connected with a standby power supply through the second circuit breaker (22), and both the two circuit breakers are provided with a closing state for switching on a circuit and a breaking state for switching off the circuit; an interlocking mechanism (30) is further arranged in the cabinet body (10), and the interlocking mechanism (30) enables at most one circuit breaker in the cabinet body (10) to be in a closing state;
the interlocking mechanism (30) comprises a bending slide plate (31), wherein the bending slide plate (31) comprises a first sliding part (310), a connecting part (311) and a second sliding part (312); the first sliding part (310) of the bending slide plate (31) is in sliding fit with the first guide rail (41), the second sliding part (312) of the bending slide plate (31) is in sliding fit with the second guide rail (42), the first guide rail (41) and the second guide rail (42) are both fixed on the first circuit breaker (21) and the second circuit breaker (22), and a first notch (313) capable of clamping the handle of the first circuit breaker (21) and a second notch (314) capable of clamping the handle of the second circuit breaker (22) are formed in two sides of the second sliding part (312); a first supporting plate (23) is fixed between the first circuit breaker (21) and the second circuit breaker (22), the first supporting plate (23) is fixedly connected with the bottom of the first guide rail (41), and the first supporting plate (23) is also fixedly connected with the bottom of the second guide rail (42); the first support plate (23) is fixedly provided with a second support plate (50), the second support plate (50) is fixedly provided with a third guide rail (51), the third guide rail (51) is symmetrically provided with two groups along the central line of the second support plate (50), the third guide rail (51) is slidably matched with a third sliding block (52), one end of the third sliding block (52) is connected with a limiting block (53) through a spring (54), the limiting block (53) is fixed on the third guide rail (51), the other end of the third sliding block (52) is fixedly provided with a stop block (55), the stop block (55) can be configured in a square through hole (56), and the square through hole (56) is formed in the middle of the first sliding part (310);
the cabinet body (10) is hinged with a first cabinet door (71) and a second cabinet door (72), and the first cabinet door (71) is positioned above the second cabinet door (72); an insulating deflector rod (57) is fixed on the outer wall of the third sliding block (52), and an insulating handle (90) is fixed on a connecting portion (311) of the bending sliding plate (31).
2. The switch cabinet with the protection function according to claim 1, wherein the section of the first guide rail (41) is a dovetail shape, and the portion of the first sliding part (310) matched with the first guide rail (41) corresponds to the section shape of the first guide rail (41); the section of the second guide rail (42) is a dovetail shape, and the part of the second sliding part (312) matched with the second guide rail (42) corresponds to the section shape of the second guide rail (42).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311133592.XA CN116864329B (en) | 2023-09-05 | 2023-09-05 | Switch cabinet with protection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311133592.XA CN116864329B (en) | 2023-09-05 | 2023-09-05 | Switch cabinet with protection function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116864329A CN116864329A (en) | 2023-10-10 |
| CN116864329B true CN116864329B (en) | 2023-12-15 |
Family
ID=88225392
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311133592.XA Active CN116864329B (en) | 2023-09-05 | 2023-09-05 | Switch cabinet with protection function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116864329B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6184595B1 (en) * | 1999-01-13 | 2001-02-06 | Reliance Controls Corporation | Interlock for transversely oriented circuit breaker switches |
| CN102709082A (en) * | 2012-06-14 | 2012-10-03 | 常熟市中源电力设备有限公司 | Mechanical mutual-locking device of molded case circuit breaker |
| CN204270930U (en) * | 2014-12-22 | 2015-04-15 | 苏州市吴通光电科技有限公司 | A kind of breaker mechanical mutual interlocking gear |
| CN207009952U (en) * | 2017-06-28 | 2018-02-13 | 华自科技股份有限公司 | Switch cubicle and its breaker twin-power switch anti-misoperation mechanical interlocking device |
| CN212907471U (en) * | 2020-09-01 | 2021-04-06 | 广东紫光电气有限公司 | Dual-power-supply restriction interlocking structure of switch cabinet |
-
2023
- 2023-09-05 CN CN202311133592.XA patent/CN116864329B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6184595B1 (en) * | 1999-01-13 | 2001-02-06 | Reliance Controls Corporation | Interlock for transversely oriented circuit breaker switches |
| CN102709082A (en) * | 2012-06-14 | 2012-10-03 | 常熟市中源电力设备有限公司 | Mechanical mutual-locking device of molded case circuit breaker |
| CN204270930U (en) * | 2014-12-22 | 2015-04-15 | 苏州市吴通光电科技有限公司 | A kind of breaker mechanical mutual interlocking gear |
| CN207009952U (en) * | 2017-06-28 | 2018-02-13 | 华自科技股份有限公司 | Switch cubicle and its breaker twin-power switch anti-misoperation mechanical interlocking device |
| CN212907471U (en) * | 2020-09-01 | 2021-04-06 | 广东紫光电气有限公司 | Dual-power-supply restriction interlocking structure of switch cabinet |
Also Published As
| Publication number | Publication date |
|---|---|
| CN116864329A (en) | 2023-10-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE3686279T2 (en) | GAS-INSULATED SWITCHGEAR. | |
| CN110299041A (en) | A kind of Intelligent power distribution terminal and communication O&M integration practical training system and method | |
| CN116864329B (en) | Switch cabinet with protection function | |
| EP0195894A2 (en) | Electrical switchgear and switching method thereof | |
| CN108767726B (en) | 40.5kV switchgear system | |
| CN115579781A (en) | Armored fixed indoor high-voltage direct-current metal-enclosed switchgear | |
| CN201478729U (en) | Indoor box-type metal enclosed ring main unit | |
| CN109994955B (en) | GCS type low pressure pull-out type cubical switchboard | |
| CN201138726Y (en) | Electric appliance interlocking apparatus for multiple drawer type circuit breaker | |
| CN216412906U (en) | Cubical switchboard interlock with five prevent interlocking | |
| CN219457502U (en) | Direct current quick breaker for cross-zone protection | |
| DE4005532A1 (en) | Generator load switch for power plant - uses standard vacuum breaker switches controlled via zero transition relay | |
| CN215451222U (en) | Interlocking mechanism applied to air switch | |
| CN220325106U (en) | High-low voltage power distribution cabinet | |
| CN218918688U (en) | Automatic brake-separating and tripping mechanism for misoperation of high-voltage circuit breaker | |
| CN104377649A (en) | Automatic switching method of transformer neutral grounding knife-switch | |
| CN213753517U (en) | High-voltage board isolating device | |
| CN215733113U (en) | Bus voltage current-limiting protection switch cabinet based on quick switch | |
| CN201374264Y (en) | Combination appliance of isolation switch and vacuum circuit breaker | |
| CN211958541U (en) | Switch cabinet | |
| CN218333644U (en) | Secondary circuit breaker for power plant | |
| CN201708446U (en) | Vacuum disconnector combined electrical apparatus | |
| CN202455081U (en) | Capacitor compensation cabinet with isolated bus chamber | |
| CN116885611A (en) | Extraction type low-voltage switch cabinet capable of preventing misoperation | |
| CN210325639U (en) | Isolator safety control device and power supply system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |