CN114171350B - Outdoor high-voltage secondary fused sleeve column circuit breaker - Google Patents
Outdoor high-voltage secondary fused sleeve column circuit breaker Download PDFInfo
- Publication number
- CN114171350B CN114171350B CN202111448362.3A CN202111448362A CN114171350B CN 114171350 B CN114171350 B CN 114171350B CN 202111448362 A CN202111448362 A CN 202111448362A CN 114171350 B CN114171350 B CN 114171350B
- Authority
- CN
- China
- Prior art keywords
- circuit breaker
- screw
- clamping plate
- shaped clamping
- heat absorption
- 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
- 238000010521 absorption reaction Methods 0.000 claims abstract description 25
- 239000004065 semiconductor Substances 0.000 claims abstract description 23
- 239000000919 ceramic Substances 0.000 claims abstract description 5
- 230000003014 reinforcing effect Effects 0.000 claims description 8
- 230000004927 fusion Effects 0.000 abstract description 7
- 238000005057 refrigeration Methods 0.000 abstract description 5
- 238000004134 energy conservation Methods 0.000 abstract description 4
- 230000007613 environmental effect Effects 0.000 abstract description 4
- 238000009413 insulation Methods 0.000 abstract 2
- 238000010586 diagram Methods 0.000 description 5
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- 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
- H01H71/02—Housings; Casings; Bases; Mountings
-
- 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
- H01H71/08—Terminals; Connections
-
- 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
- H01H9/52—Cooling of switch parts
Landscapes
- Breakers (AREA)
Abstract
The invention discloses an outdoor high-voltage secondary fusion complete column circuit breaker, which comprises a heat absorption groove, a circuit breaker main body and a U-shaped clamping plate, wherein a semiconductor refrigeration piece is arranged at one end of the heat absorption groove through a mounting hole, a microcomputer time control switch is arranged at one end of the semiconductor refrigeration piece through a screw, the circuit breaker main body is arranged at the top of the heat absorption groove through a bolt, a sliding rail is arranged at two ends of the top of the circuit breaker main body through a screw, a control box is arranged at the upper end of the sliding rail, a fixed column is arranged at the top of the control box through a ceramic fixing seat, an insulation column is arranged at one end of the circuit breaker main body through a screw, and a current transformer is arranged at the lower end of the insulation column through a screw; the circuit breaker on the fused sleeve column has the function of continuously absorbing heat, shows the design concept of energy conservation and environmental protection, has good strength, rigidity and stability, and is suitable for wide popularization and use.
Description
Technical Field
The invention relates to the technical field of circuit breakers, in particular to an outdoor high-voltage secondary fusion integrated post-mounted circuit breaker.
Background
The secondary fused loop column circuit breaker is a switching device which is arranged on a high-voltage telegraph pole to conduct current under normal loop closing, bearing and opening and closing conditions and can conduct current under abnormal loop closing, bearing and opening conditions within a specified time, however, the current consumption of China is huge, the circuits are more and complex, the conventional circuit breaker has a single structure, and the conventional circuit breaker is a horizontal circuit breaker and is difficult to adapt to the more and complex high-voltage circuits.
The fused bushing-type circuit breaker has the following defects: 1. the circuit breaker on the fused sleeve column does not have the function of continuous heat absorption, and the design concept of energy conservation and environmental protection is not revealed; 2. poor strength, rigidity and stability. For this purpose we propose an outdoor high voltage two-shot fused set of on-pole circuit breakers.
Disclosure of Invention
The invention mainly aims to provide an outdoor high-voltage secondary fusion sleeve column circuit breaker, which can effectively solve the problems in the background technology.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
The utility model provides an outdoor high pressure secondary fuses complete set post circuit breaker, includes heat absorption groove, circuit breaker main part and U-shaped splint, semiconductor refrigeration piece is installed through the mounting hole to heat absorption groove one end, the one end of semiconductor refrigeration piece is through the screw mounting microcomputer time control switch, the circuit breaker main part is installed through the bolt in the top of heat absorption groove, the top both ends of circuit breaker main part are provided with the control box through the upper end of screw mounting slide rail and slide rail, the fixed column is installed through ceramic fixing base in the top of control box, the insulating column is installed through the screw to the one end of circuit breaker main part, current transformer is installed through the screw to the lower extreme of insulating column, U-shaped splint is installed through the screw at one side both ends of heat absorption groove, be provided with arc splint in the U-shaped splint.
Further, one side of the arc-shaped clamping plate is provided with a bearing, one end of the U-shaped clamping plate is provided with a screw rod through a threaded hole, one end of the screw rod is positioned in the bearing, and the other end of the screw rod is welded with a rotating wheel.
Further, the refrigerating end of the semiconductor refrigerating sheet is positioned in the heat absorption groove, and the output end of the microcomputer time control switch is electrically connected with the input end of the semiconductor refrigerating sheet through a wire.
Further, the two ends of the bottom of the control box are welded with sliding blocks, and the sliding blocks slide on the sliding rails.
Further, one side of the fixed column is welded with a binding post, the bottom of the current transformer is connected with a high-voltage output plate, and a wire connecting hole is formed in the high-voltage output plate.
Further, the inner bottom of the U-shaped clamping plate is embedded with a sliding groove, and the bottom of the arc-shaped clamping plate is welded with a sliding block which is positioned in the sliding groove.
Further, support columns are welded at two ends of the bottom of the U-shaped clamping plate, and positioning sheets are installed at the bottoms of the support columns through mounting holes.
Further, a reinforcing rod is installed between the support columns through bolts, and the reinforcing rod is fixed at the bottom of the heat absorption groove through bolts.
Compared with the prior art, the invention has the following beneficial effects:
1. The invention discloses an outdoor high-voltage secondary fusion complete set of on-column circuit breaker, which is characterized in that a U-shaped clamping plate is sleeved on a connecting column of a bracket, an arc-shaped clamping plate is positioned on one side of the connecting column, a rotating wheel drives the arc-shaped clamping plate at one end of a screw rod to move, the connecting column is clamped, the fixation is realized rapidly, and a locating plate and a matched locating screw are used for installing the connecting column on a supporting plate, so that the integral strength, rigidity and stability of the device are improved.
2. The outdoor high-voltage secondary fusion complete column circuit breaker utilizes the high-voltage output plate at the lower end of the current transformer to be convenient for connecting a high-voltage wire, and the other end of the high-voltage wire is connected to a binding post at one side of a fixed column, so that the circuit breaker body can normally operate, the circuit breaker body can realize the function of circuit breaking, and the semiconductor refrigerating sheet is utilized to cool the interior of the heat absorption groove, so that the internal temperature is reduced, and the heat generated by the circuit breaker body is continuously absorbed.
3. The outdoor high-voltage secondary integrated post-mounted circuit breaker utilizes the microcomputer time control switch to automatically control the working time of the semiconductor refrigerating sheet, and automatically closes the semiconductor refrigerating sheet after the set time is reached, so that the design concept of energy conservation and environmental protection is revealed.
Drawings
Fig. 1 is a schematic diagram of the overall structure of an outdoor high-voltage secondary fused set of on-pole circuit breaker according to the invention.
Fig. 2 is a schematic diagram of the heat absorption tank structure of the outdoor high-voltage secondary fused set of on-column circuit breaker.
Fig. 3 is a schematic diagram showing a large structure of a part A of the outdoor high-voltage secondary fused set of pole-mounted circuit breaker.
Fig. 4 is a schematic diagram of a bearing structure of an outdoor high-voltage secondary fused set of on-column circuit breaker according to the present invention.
Fig. 5 is a schematic diagram of the structure of the binding post of the outdoor high-voltage secondary fusion complete set of on-post circuit breaker.
Fig. 6 is a schematic view of the structure of the wiring hole of the outdoor high-voltage secondary fused loop-column circuit breaker according to the present invention.
In the figure: 1. a rotating wheel; 2. a screw rod; 3. an arc clamping plate; 4. a sliding groove; 5. u-shaped clamping plates; 6. a support column; 7. a positioning sheet; 8. a reinforcing rod; 9. a heat absorption tank; 10. a breaker main body; 11. a current transformer; 12. a high voltage output board; 13. an insulating column; 14. a slide rail; 15. a slide block; 16. a control box; 17. a ceramic fixing seat; 18. fixing the column; 19. a semiconductor refrigeration sheet; 20. a microcomputer time control switch; 21. a sliding block; 22. binding posts; 23. a wire hole; 24. and (3) a bearing.
Detailed Description
The invention is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the invention easy to understand.
As shown in fig. 1-6, the outdoor high-voltage secondary fuses complete column circuit breaker comprises a heat absorption groove 9, a circuit breaker main body 10 and a U-shaped clamping plate 5, wherein a semiconductor refrigerating sheet 19 is installed at one end of the heat absorption groove 9 through a mounting hole, a microcomputer time control switch 20 is installed at one end of the semiconductor refrigerating sheet 19 through a screw, the circuit breaker main body 10 is installed at the top of the heat absorption groove 9 through a bolt, a sliding rail 14 is installed at two ends of the top of the circuit breaker main body 10 through a screw, a control box 16 is arranged at the upper end of the sliding rail 14, a fixing column 18 is installed at the top of the control box 16 through a ceramic fixing seat 17, an insulating column 13 is installed at one end of the circuit breaker main body 10 through a screw, a current transformer 11 is installed at the lower end of the insulating column 13 through a screw, a U-shaped clamping plate 5 is installed at two ends of one side of the heat absorption groove 9 through a screw, and an arc-shaped clamping plate 3 is arranged in the U-shaped clamping plate 5.
One side of the arc-shaped clamping plate 3 is provided with a bearing 24, one end of the U-shaped clamping plate 5 is provided with a screw rod 2 through a threaded hole, one end of the screw rod 2 is positioned in the bearing 24, and the other end of the screw rod 2 is welded with a rotating wheel 1; the rotating wheel 1 drives the arc clamping plate 3 at one end of the screw rod 2 to move, so as to clamp the connecting column and realize fixation rapidly.
Wherein, the refrigerating end of the semiconductor refrigerating sheet 19 is positioned in the heat absorption groove 9, and the output end of the microcomputer time control switch 20 is electrically connected with the input end of the semiconductor refrigerating sheet 19 through a wire; the microcomputer time control switch 20 is utilized to automatically control the working time of the semiconductor refrigerating sheet 19, and the semiconductor refrigerating sheet 19 is automatically closed after the set time is reached, so that the design concept of energy conservation and environmental protection is revealed.
The two ends of the bottom of the control box 16 are welded with sliding blocks 15, and the sliding blocks 15 slide on the sliding rails 14; the position of the control box 16 is adjusted by sliding the slide 15 on the slide rail 14.
A binding post 22 is welded on one side of the fixing post 18, the bottom of the current transformer 11 is connected with a high-voltage output plate 12, and a wire connecting hole 23 is formed in the high-voltage output plate 12; the high voltage output plate 12 at the lower end of the current transformer 11 is used for conveniently connecting a high voltage wire, and the other end of the high voltage wire is connected to the binding post 22 at one side of the fixed post 18, so that the circuit breaker main body 10 can normally operate, and the circuit breaking function is realized.
The sliding groove 4 is embedded in the inner bottom of the U-shaped clamping plate 5, the sliding block 21 is welded at the bottom of the arc-shaped clamping plate 3, and the sliding block 21 is positioned in the sliding groove 4; the sliding block 21 slides in the sliding groove 4, so that the arc clamping plate 3 has strong stability when moving.
The two ends of the bottom of the U-shaped clamping plate 5 are welded with support columns 6, and positioning sheets 7 are arranged at the bottoms of the support columns 6 through mounting holes; the locating plate 7 and the matched locating screw are used for installing the locating plate on the supporting plate, so that the integral strength, rigidity and stability of the device are improved.
Wherein, a reinforcing rod 8 is arranged between the support columns 6 through bolts, and the reinforcing rod 8 is fixed at the bottom of the heat absorption groove 9 through bolts; the stability of the mounting bracket system is improved by utilizing the reinforcing rod (8) to prevent shaking.
It should be noted that, the invention is an outdoor high-voltage secondary fusion complete set post circuit breaker, when in operation, the U-shaped clamping plate 5 is sleeved on the connecting post of the bracket, the arc clamping plate 3 is positioned at one side of the connecting post, the rotating wheel 1 drives the arc clamping plate 3 at one end of the screw rod 2 to move, the connecting post is clamped and fixed, the positioning plate 7 and the matched positioning screw are utilized to install the connecting post on the supporting plate, the integral strength, rigidity and stability of the device are improved, the high-voltage output plate 12 at the lower end of the current transformer 11 is utilized to be convenient for connecting a high-voltage wire, the other end of the high-voltage wire is connected to the binding post 22 at one side of the fixing post 18, so that the circuit breaker body 10 can realize the function of circuit breaking, the semiconductor refrigerating plate 19 is utilized to refrigerate and cool the heat absorbing groove 9, the internal temperature is reduced, thus continuously absorbing the heat generated by the circuit breaker body 10, the working time of the semiconductor refrigerating plate 19 is automatically controlled by the microcomputer time control switch 20, the semiconductor refrigerating plate 19 is automatically closed after reaching the set time, and the design concept of energy saving and environment protection is revealed.
The foregoing has shown and described the basic principles and main features of the present invention and the advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. The utility model provides an outdoor high pressure fuses complete set post circuit breaker once more, includes heat absorption groove (9), circuit breaker main part (10) and U-shaped splint (5), its characterized in that: the semiconductor refrigerating sheet (19) is installed at one end of the heat absorption groove (9) through a mounting hole, the microcomputer time control switch (20) is installed at one end of the semiconductor refrigerating sheet (19) through a screw, the circuit breaker main body (10) is installed at the top of the heat absorption groove (9) through a bolt, the sliding rail (14) is installed at two ends of the top of the circuit breaker main body (10) through a screw, the control box (16) is arranged at the upper end of the sliding rail (14), the fixing column (18) is installed at the top of the control box (16) through a ceramic fixing seat (17), the insulating column (13) is installed at one end of the circuit breaker main body (10) through a screw, the current transformer (11) is installed at the lower end of the insulating column (13) through a screw, the U-shaped clamping plate (5) is installed at two ends of one side of the heat absorption groove (9) through a screw, and the arc-shaped clamping plate (3) is arranged in the U-shaped clamping plate (5).
The two ends of the bottom of the control box (16) are welded with sliding blocks (15), and the sliding blocks (15) slide on the sliding rails (14).
2. The outdoor high voltage secondary fused set of on-pole circuit breakers of claim 1, wherein: one side of the arc-shaped clamping plate (3) is provided with a bearing (24), one end of the U-shaped clamping plate (5) is provided with a screw rod (2) through a threaded hole, one end of the screw rod (2) is positioned in the bearing (24), and the other end of the screw rod (2) is welded with a rotating wheel (1).
3. The outdoor high voltage secondary fused set of on-pole circuit breakers of claim 1, wherein: the refrigerating end of the semiconductor refrigerating sheet (19) is positioned in the heat absorption groove (9), and the output end of the microcomputer time control switch (20) is electrically connected with the input end of the semiconductor refrigerating sheet (19) through a wire.
4. The outdoor high voltage secondary fused set of on-pole circuit breakers of claim 1, wherein: one side of the fixed column (18) is welded with a binding post (22), the bottom of the current transformer (11) is connected with a high-voltage output plate (12), and a wire connecting hole (23) is formed in the high-voltage output plate (12).
5. The outdoor high voltage secondary fused set of on-pole circuit breakers of claim 1, wherein: the inner bottom of the U-shaped clamping plate (5) is embedded with a sliding groove (4), the bottom of the arc-shaped clamping plate (3) is welded with a sliding block (21), and the sliding block (21) is positioned in the sliding groove (4).
6. The outdoor high voltage secondary fused set of on-pole circuit breakers of claim 1, wherein: the two ends of the bottom of the U-shaped clamping plate (5) are welded with supporting columns (6), and positioning sheets (7) are arranged at the bottoms of the supporting columns (6) through mounting holes.
7. The outdoor high voltage secondary fused set of on-pole circuit breakers of claim 6, wherein: a reinforcing rod (8) is arranged between the support columns (6) through bolts, and the reinforcing rod (8) is fixed at the bottom of the heat absorption groove (9) through screws.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111448362.3A CN114171350B (en) | 2021-11-30 | 2021-11-30 | Outdoor high-voltage secondary fused sleeve column circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111448362.3A CN114171350B (en) | 2021-11-30 | 2021-11-30 | Outdoor high-voltage secondary fused sleeve column circuit breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114171350A CN114171350A (en) | 2022-03-11 |
| CN114171350B true CN114171350B (en) | 2024-05-07 |
Family
ID=80482326
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111448362.3A Active CN114171350B (en) | 2021-11-30 | 2021-11-30 | Outdoor high-voltage secondary fused sleeve column circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114171350B (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100864304B1 (en) * | 2007-04-30 | 2008-10-20 | 피앤에이파워시스템 주식회사 | Slim breaker/switch for overhead wires |
| CN108666178A (en) * | 2018-06-14 | 2018-10-16 | 河南许智电力科技有限公司 | A kind of high-voltage circuitbreaker being easily installed |
| CN109243908A (en) * | 2018-09-21 | 2019-01-18 | 江苏江阴华明电气设备有限公司 | A kind of outdoor high-voltage sulfur hexafluoride circuit breaker |
| CN209267896U (en) * | 2018-10-02 | 2019-08-16 | 江苏圣琪双金属材料有限公司 | A kind of significant electronic component cabling channel of cooling effect |
| CN209993554U (en) * | 2019-08-13 | 2020-01-24 | 泰州亿丰达电器有限公司 | Automatic rivet dismounting device for marine miniature circuit breaker |
| CN210200625U (en) * | 2019-09-26 | 2020-03-27 | 远中电气有限公司 | Horizontal-vertical integrated secondary fusion complete-set on-column circuit breaker |
| CN210296248U (en) * | 2019-08-30 | 2020-04-10 | 天津赛孚电气开关有限公司 | Universal circuit breaker |
| CN211507544U (en) * | 2020-04-28 | 2020-09-15 | 浙江炬宏电力设备有限公司 | Breaker on primary and secondary fusion column |
| CN111769005A (en) * | 2020-07-04 | 2020-10-13 | 华翔翔能科技股份有限公司 | One-time and two-time integrated on-column circuit breaker |
| CN212084904U (en) * | 2020-05-19 | 2020-12-04 | 河南安达高压电气有限公司 | SF6 circuit breaker for column with primary and secondary fusion |
| CN212969937U (en) * | 2020-09-26 | 2021-04-13 | 路忠辉 | Highly integrated network information security all-in-one machine cabinet |
-
2021
- 2021-11-30 CN CN202111448362.3A patent/CN114171350B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100864304B1 (en) * | 2007-04-30 | 2008-10-20 | 피앤에이파워시스템 주식회사 | Slim breaker/switch for overhead wires |
| CN108666178A (en) * | 2018-06-14 | 2018-10-16 | 河南许智电力科技有限公司 | A kind of high-voltage circuitbreaker being easily installed |
| CN109243908A (en) * | 2018-09-21 | 2019-01-18 | 江苏江阴华明电气设备有限公司 | A kind of outdoor high-voltage sulfur hexafluoride circuit breaker |
| CN209267896U (en) * | 2018-10-02 | 2019-08-16 | 江苏圣琪双金属材料有限公司 | A kind of significant electronic component cabling channel of cooling effect |
| CN209993554U (en) * | 2019-08-13 | 2020-01-24 | 泰州亿丰达电器有限公司 | Automatic rivet dismounting device for marine miniature circuit breaker |
| CN210296248U (en) * | 2019-08-30 | 2020-04-10 | 天津赛孚电气开关有限公司 | Universal circuit breaker |
| CN210200625U (en) * | 2019-09-26 | 2020-03-27 | 远中电气有限公司 | Horizontal-vertical integrated secondary fusion complete-set on-column circuit breaker |
| CN211507544U (en) * | 2020-04-28 | 2020-09-15 | 浙江炬宏电力设备有限公司 | Breaker on primary and secondary fusion column |
| CN212084904U (en) * | 2020-05-19 | 2020-12-04 | 河南安达高压电气有限公司 | SF6 circuit breaker for column with primary and secondary fusion |
| CN111769005A (en) * | 2020-07-04 | 2020-10-13 | 华翔翔能科技股份有限公司 | One-time and two-time integrated on-column circuit breaker |
| CN212969937U (en) * | 2020-09-26 | 2021-04-13 | 路忠辉 | Highly integrated network information security all-in-one machine cabinet |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114171350A (en) | 2022-03-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103560774B (en) | Intelligent solid conversion switch and processing method thereof and change over switch control system | |
| CN114171350B (en) | Outdoor high-voltage secondary fused sleeve column circuit breaker | |
| CN111356316B (en) | Multifunctional terminal case for feeder automation tester | |
| CN101237147B (en) | Integrated power capacitor | |
| CN210866837U (en) | Liftable high-voltage board rack of installing fast | |
| CN200990336Y (en) | Outdoor high-voltage permanent magnetic vacuum circuit breaker | |
| CN218123235U (en) | Conductive plate easy to open and close | |
| CN115565807A (en) | Double-station ice melting isolating switch with self-ice melting function | |
| CN115498532A (en) | Novel high-voltage power cabinet | |
| CN212485831U (en) | Safety switch cabinet convenient to overhaul | |
| CN207398378U (en) | A kind of bus adaption device for breaker | |
| CN202374474U (en) | Power-variable turnout snowmelt device | |
| CN221352638U (en) | High-voltage circuit breaker suitable for outdoor installation | |
| CN221428411U (en) | Contact arm of movable load switch | |
| CN219717595U (en) | Low-voltage fixed integrated control switch cabinet | |
| CN206059272U (en) | A kind of 27.5kV outdoor single-phases railway vacuum circuit breaker special | |
| CN221551804U (en) | Quick loading device of miniature circuit breaker | |
| CN219697002U (en) | Low-voltage switch cabinet convenient for installing circuit breaker | |
| CN206211380U (en) | A kind of compound high-pressure metal sealing switch equipment of high current low-temperature-rise | |
| CN106128806B (en) | One kind being suitable for high-tension apparatus high-current switch contact | |
| CN210296874U (en) | Mounting bracket with height-adjustable main switch of control cabinet | |
| CN204668226U (en) | A kind of outdoor novel formula high voltage isolator that opens ice | |
| CN203859081U (en) | Energy-saving intelligent air circuit breaker | |
| CN220673221U (en) | Environment-friendly gas-insulated full-sealed inflatable cabinet | |
| CN221596331U (en) | SF6 circuit breaker on outdoor post of a kind of secondary fusion pot type |
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 |