CN116525327A - Secondary fusion on-column circuit breaker with protection type isolating switch - Google Patents
Secondary fusion on-column circuit breaker with protection type isolating switch Download PDFInfo
- Publication number
- CN116525327A CN116525327A CN202310501263.XA CN202310501263A CN116525327A CN 116525327 A CN116525327 A CN 116525327A CN 202310501263 A CN202310501263 A CN 202310501263A CN 116525327 A CN116525327 A CN 116525327A
- Authority
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- China
- Prior art keywords
- sliding groove
- linkage unit
- handle
- circuit breaker
- protective
- 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.)
- Granted
Links
- 230000004927 fusion Effects 0.000 title claims abstract description 9
- 230000007246 mechanism Effects 0.000 claims abstract description 40
- 230000001681 protective effect Effects 0.000 claims abstract description 29
- 239000012212 insulator Substances 0.000 claims description 24
- 238000004880 explosion Methods 0.000 claims description 6
- 239000011810 insulating material Substances 0.000 claims description 4
- 230000010354 integration Effects 0.000 claims description 2
- 230000008033 biological extinction Effects 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Classifications
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- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
- H01H31/02—Details
- H01H31/04—Interlocking mechanisms
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/664—Contacts; Arc-extinguishing means, e.g. arcing rings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/666—Operating arrangements
- H01H33/6661—Combination with other type of switch, e.g. for load break switches
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- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/10—Nuclear fusion reactors
Landscapes
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The invention relates to the technical field of circuit breakers and provides a secondary fusion pole-mounted circuit breaker with a protective isolating switch, which comprises a mechanism box, an arc extinguish chamber and an isolating switch, wherein the arc extinguish chamber and the isolating switch are arranged on the mechanism box, the mechanism box comprises a rotatable opening and closing handle, the isolating switch comprises a rotatable operating handle and a protective linkage unit, one end of the opening and closing handle and one end of the operating handle are movably connected to the protective linkage unit, when the protective linkage unit enables the opening and closing handle to be in a rotatable state, the protective linkage unit enables the operating handle to be in a non-rotatable state, and when the protective linkage unit enables the operating handle to be in a rotatable state, the protective linkage unit enables the opening and closing handle to be in a non-rotatable state. Through the technical scheme, the problems that when the circuit breaker is operated in the prior art, the on-off operation of the isolating switch and the arc extinguish chamber does not have the protection capability and safety accidents are easy to occur are solved.
Description
Technical Field
The invention relates to the technical field of circuit breakers, in particular to a secondary fusion on-column circuit breaker with a protective isolating switch.
Background
The vacuum circuit breaker is named because the arc extinguishing medium and the insulating medium of the contact gap after arc extinguishing are both high vacuum; the arc extinguishing device has the advantages of small volume, light weight, suitability for frequent operation and no maintenance for arc extinction, and is more popular to be applied to a secondary fusion column in a power distribution network. The vacuum circuit breaker is an indoor distribution device in a three-phase alternating current system of 3-10 kV and 50Hz, and can be used for protecting and controlling electrical equipment in industrial and mining enterprises, power plants and substations.
In the prior art, the vacuum circuit breaker on the fusion column is subjected to arc extinction through the vacuum arc-extinguishing chamber, and the conductive disconnecting link is switched on and off through the disconnecting switch, but the disconnecting switch cannot be subjected to arc extinction, so that attention is particularly required to be paid when the disconnecting switch is switched on and off, the arc-extinguishing chamber is required to be switched off through the mechanism box before the disconnecting switch is required to be disconnected, and the arc-extinguishing chamber is required to be switched on through the mechanism box after the disconnecting switch is required to be communicated if the disconnecting switch is required to be communicated, so that the safety regulation is aimed at, an experienced maintenance engineer generally considers to judge the safety regulation, and safety accidents are very easy to happen when the experience of maintenance personnel is shallow or the operation is improper, and therefore, the vacuum circuit breaker with the protection capability is required based on the problems.
Disclosure of Invention
The invention provides a secondary fusion pole-mounted circuit breaker with a protective disconnecting switch, which solves the problems that the disconnecting switch and an arc-extinguishing chamber have no protective capability in the on-off operation of the disconnecting switch and the arc-extinguishing chamber and safety accidents are easy to occur in the prior art when the circuit breaker is operated.
The technical scheme of the invention is as follows:
the utility model provides a circuit breaker on secondary integration post with protection isolator, includes mechanism case, explosion chamber, isolator, the explosion chamber with isolator sets up on the mechanism case, the mechanism case includes rotatable divide-shut brake handle, isolator includes rotatable operating handle, still includes protection linkage unit, the one end of divide-shut brake handle with the one end of operating handle is all movable connection is in on the protection linkage unit, protection linkage unit makes when the divide-shut brake handle is in rotatable state, protection linkage unit makes operating handle is in non-rotatable state, and, protection linkage unit makes operating handle is in rotatable state, protection linkage unit makes the divide-shut brake handle is in non-rotatable state.
The protection linkage unit is the plate body and slides and set up on the mechanism case, be provided with first spout, second spout, third spout and fourth spout on the protection linkage unit, wherein first spout level sets up just first spout with second spout intercommunication forms L type spout, third spout vertical setting just third spout with fourth spout intercommunication forms L type spout, operating handle gliding one end sets up first spout with in the second spout, the one end slip of divide-shut brake handle sets up in third spout with in the fourth spout, works as the divide-shut brake handle is located when in the third spout, operating handle is located in the first spout, works as the divide-shut brake handle is located when in the fourth spout, operating handle is located in the second spout.
The mechanism comprises a mechanism box, and is characterized by further comprising a telescopic unit, wherein the telescopic unit is arranged on the mechanism box, the protection linkage unit is movably arranged on the mechanism box, and the telescopic unit enables the protection linkage unit to be disconnected or connected with the opening and closing handle and the operating handle.
The isolating switch further comprises a support, a first rotating shaft, a connecting rod, a first insulator, a second insulator, a first disconnecting link and a second disconnecting link, wherein the support is arranged on the mechanism box, the first rotating shaft is rotatably arranged on the support and connected with one end of the operating handle, the first insulator is arranged on the support, the first disconnecting link is arranged on the first insulator, the connecting rod is arranged on the first rotating shaft, one end of the connecting rod is hinged to the second insulator, one end of the second disconnecting link is hinged to the arc extinguishing chamber, the other end of the second insulator is hinged to the second disconnecting link, and the first rotating shaft is rotated to enable the first disconnecting link to be connected with or disconnected from the second disconnecting link.
The explosion chamber includes insulating housing and sets up vacuum shell in the insulating housing, still includes dead end apron, moving end apron, first conducting rod and second conducting rod, first conducting rod passes the dead end apron and set up the upper portion of vacuum shell, the second conducting rod passes moving end apron and remove the setting and be in the bottom of vacuum shell.
The movable end cover plate is a corrugated pipe.
The mechanism box is internally provided with a second rotating shaft and a cam arranged on the second rotating shaft, one end of the second rotating shaft is connected with the opening and closing handle, and the cam is in butt joint with the bottom of the second conducting rod.
The cam is an insulating material.
The working principle and the beneficial effects of the invention are as follows:
the invention discloses a secondary fusion pole-mounted circuit breaker with a protective isolating switch, wherein a protective linkage unit is arranged on a mechanism box, an operating handle for controlling the on-off of the isolating switch and an on-off switch handle for controlling the on-off of an arc extinguish chamber are linked in action by the aid of the protective linkage unit, when the on-off switch handle can control the on-off of the arc extinguish chamber, the operating handle for controlling the on-off of the isolating switch cannot be operated, so that safety accidents caused by the fact that a worker opens the isolating switch in a communicating state of the arc extinguish chamber are avoided, meanwhile, when the on-off switch handle is disconnected, the operating handle cannot be operated at the moment, the on-off switch handle cannot be operated, the arc extinguish chamber is connected by mistake under the condition that the isolating switch is disconnected, and then the arc extinguish chamber is electrified to be closed under the condition that the isolating switch is disconnected, so that the safety accidents occur.
Drawings
The invention will be described in further detail with reference to the drawings and the detailed description.
FIG. 1 is a schematic diagram of an axial structure of the present invention;
FIG. 2 is a schematic top view of the present invention;
FIG. 3 is a cross-sectional view taken along the line A-A in FIG. 2;
in the figure: 1. the mechanism box, 2, the explosion chamber, 3, isolator, 4, divide-shut brake handle, 5, operating handle, 6, protection linkage unit, 7, first spout, 8, second spout, 9, third spout, 10, fourth spout, 11, flexible unit, 12, support, 13, first rotation axis, 14, connecting rod, 15, first insulator, 16, second insulator, 17, first switch, 18, second switch, 19, insulating housing, 20, vacuum housing, 21, dead end apron, 22, moving end apron, 23, first conducting rod, 24, second conducting rod, 25, second rotation axis, 26, cam.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1 to 3, this embodiment proposes a secondary fused on-pole circuit breaker with a protective disconnecting switch 3, which comprises a mechanism box 1, an arc extinguishing chamber 2 and a disconnecting switch 3, wherein the arc extinguishing chamber 2 and the disconnecting switch 3 are arranged on the mechanism box 1, the mechanism box 1 comprises a rotatable opening and closing handle 4, the disconnecting switch 3 comprises a rotatable operating handle 5, and further comprises a protective linkage unit 6, one end of the opening and closing handle 4 and one end of the operating handle 5 are movably connected to the protective linkage unit 6, when the protective linkage unit 6 makes the opening and closing handle 4 in a rotatable state, the protective linkage unit 6 makes the operating handle 5 in a non-rotatable state, and when the protective linkage unit 6 makes the operating handle 5 in a rotatable state, the protective linkage unit 6 makes the opening and closing handle 4 in a non-rotatable state.
In the embodiment, an arc extinguish chamber 2 and an isolating switch 3 are installed on a mechanism box 1, an opening and closing handle 4 installed on the mechanism box 1 is used for controlling the opening and closing of the arc extinguish chamber 2, the isolating switch 3 is installed on the mechanism box 1 and is normally connected in a rotating way, the opening and closing of the isolating switch is realized through an operating handle 5 of the isolating switch 3 and is also normally connected in a rotating way, the operating handle 5 for controlling the opening and closing of the isolating switch 3 and the opening and closing handle 4 for controlling the opening and closing of the arc extinguish chamber 2 are connected in an action by means of a protective linkage unit 6 installed on the mechanism box 1, the operating handle 5 is in a non-rotatable state when the opening and closing handle 4 is in an adjustable rotating state by the protective linkage unit 6, and the opening and closing handle 4 is in the non-rotatable state when the operating handle 5 is in the rotatable state; specifically, when the switching-on/off handle 4 can control the switching-on/off of the arc extinguish chamber 2, the operating handle 5 for controlling the switching-on/off of the isolating switch 3 cannot be operated, so that safety accidents caused by the fact that a worker opens the isolating switch 3 in a communication state of the arc extinguish chamber 2 are avoided, meanwhile, when the switching-on/off handle 4 is disconnected, the operating handle 5 cannot be operated at the moment if the isolating switch 3 is disconnected, the problem that the switching-on/off handle 4 is not operated at the moment, and the arc extinguish chamber 2 is mistakenly connected under the condition that the isolating switch 3 is disconnected, so that the arc extinguish chamber 3 can be electrified to be closed when the isolating switch 3 is closed is avoided, and safety accidents occur.
The protection linkage unit 6 is the plate body and slides and set up on the mechanism case 1, be provided with first spout 7, second spout 8, third spout 9 and fourth spout 10 on the protection linkage unit 6, wherein first spout 7 level sets up just first spout 7 with second spout 8 intercommunication forms L type spout, third spout 9 vertical setting just third spout 9 with fourth spout 10 intercommunication forms L type spout, the gliding one end setting of operating handle 5 is in first spout 7 with in the second spout 8, the one end slip of divide-shut brake handle 4 sets up third spout 9 with in the fourth spout 10, works as divide-shut brake handle 4 is located when in third spout 9, operating handle 5 is located in first spout 7, works as divide-shut brake handle 4 is located when in the fourth spout 10, operating handle 5 is located in the second spout 8.
On the basis of the embodiment, the protection linkage unit 6 is arranged as a plate body, and the sliding grooves are formed in the protection linkage unit 6 to realize the linkage of the operating handle 5 and the opening and closing handle 4, the end part of the opening and closing handle slides in the third sliding groove 9 and the fourth sliding groove 10, the end part of the operating handle 5 slides in the first sliding groove 7 and the second sliding groove 8, the first sliding groove 7 and the second sliding groove 8 are vertical, the third sliding groove 9 and the fourth sliding groove 10 are vertical, the first sliding groove 7 is horizontally arranged, the third sliding groove 9 is vertically arranged, when the opening and closing handle 4 rotates, the end part of the opening and closing handle 4 can slide in the third sliding groove 9 and simultaneously drive the protection linkage unit 6 to move in the horizontal direction, at the moment, the end part of the operating handle 5 can move in the direction close to the second sliding groove 8 in the first sliding groove 7, after the opening and closing handle 4 enters the fourth sliding groove 10, the operating handle 5 is driven to move along the fourth sliding groove 10 when the operating handle 5 rotates, the opening and closing handle 4 or the operating handle 5 moves in the respective sliding grooves, and the other opening and closing handle 4 can avoid the accident.
The automatic switching mechanism further comprises a telescopic unit 11, wherein the telescopic unit 11 is arranged on the mechanism box 1, the protection linkage unit 6 is movably arranged on the mechanism box 1, and the telescopic unit 11 enables the protection linkage unit 6 to be disconnected or connected with the switching-on/off handle 4 and the operating handle 5.
In this embodiment, the protection linkage unit 6 is driven by the telescopic unit 11 on the mechanism box 1 to disconnect and connect the rest of the opening and closing handles 4 and the operating handle 5, specifically, the protection linkage unit 6 is driven by the telescopic end of the telescopic unit 11 to move along the direction perpendicular to the board surface, so that the ends of the opening and closing handles 4 and the operating handle 5 can be separated from the sliding groove.
The isolating switch 3 further comprises a support 12, a first rotating shaft 13, a connecting rod 14, a first insulator 15, a second insulator 16, a first disconnecting link 17 and a second disconnecting link 18, wherein the support 12 is arranged on the mechanism box 1, the first rotating shaft 13 is rotatably arranged on the support 12 and is connected with one end of the operating handle 5, the first insulator 15 is arranged on the support 12, the first disconnecting link 17 is arranged on the first insulator 15, the connecting rod 14 is arranged on the first rotating shaft 13, one end of the connecting rod 14 is hinged with the second insulator 16, one end of the second disconnecting link 18 is hinged with the arc extinguishing chamber 2, the other end of the second insulator 16 is hinged with the second disconnecting link, and the first rotating shaft 13 is rotatably connected with or disconnected with the first disconnecting link 17 and the second disconnecting link 18.
In this embodiment, the isolating switch 3 is based on the support 12, the first rotating shaft 13 on the support 12 rotates, the connecting rod 14 arranged on the first rotating shaft 13 drives the second insulator 16 to swing, the second insulator 16 moves upwards, the second insulator 16 jacks up the second disconnecting link 18, so that the second disconnecting link 18 is separated from the first disconnecting link 17 and the second disconnecting link 18, and the first disconnecting link 17 and the second disconnecting link 18 are both arranged on the insulators, so that the insulating effect is achieved, and the safety is improved.
The arc extinguishing chamber 2 comprises an insulating shell 19 and a vacuum shell 20 arranged in the insulating shell 19, and further comprises a fixed end cover plate 21, a movable end cover plate 22, a first conducting rod 23 and a second conducting rod 24, wherein the first conducting rod 23 penetrates through the fixed end cover plate 21 and is arranged on the upper portion of the vacuum shell 20, and the second conducting rod 24 penetrates through the movable end cover plate 22 and is movably arranged on the bottom of the vacuum shell 20.
In this embodiment, the arc extinguishing chamber 2 forms an internal vacuum environment through the top cover plate at two ends and the movable end cover plate 22, the first conductive rod 23 passes through the top cover plate, the second conductive rod 24 passes through the movable end cover plate 22 and can move up and down along with the movable end cover plate 22, and an electrical connection can be formed between the first conductive rod 23 and the second conductive rod 24, and arc extinguishing can also be realized in the vacuum chamber to protect circuit safety.
The moving end cover plate 22 is a bellows.
In this embodiment, the movable end cover 22 is a bellows, which has a good expansion capability to satisfy the displacement variation of the second conductive rod 24, and also maintains a better sealing performance.
A second rotating shaft 25 and a cam 26 disposed on the second rotating shaft 25 are disposed in the mechanism case 1, one end of the second rotating shaft 25 is connected to the opening/closing handle 4, and the cam 26 is abutted to the bottom of the second conductive rod 24.
The cam 26 is an insulating material.
In this embodiment, in the mechanism box 1, in order to realize switching on/off between the second conductive rod 24 and the first conductive rod 23, the first conductive rod 23 may be lifted up or dropped down by using the form that the second rotating shaft 25 drives the cam 26, so that the second conductive rod 24 and the second conductive rod 24 are contacted or disconnected, and in order to ensure safety, the cam 26 may be made of an insulating material.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (8)
1. The utility model provides a circuit breaker on secondary integration post with protection isolator, includes mechanism case (1), explosion chamber (2), isolator (3), explosion chamber (2) with isolator (3) set up on mechanism case (1), mechanism case (1) are including rotatable divide-shut brake handle (4), isolator (3) include rotatable operating handle (5), characterized in that still includes protection linkage unit (6), the one end of divide-shut brake handle (4) with the one end of operating handle (5) all movable connection is in on protection linkage unit (6), protection linkage unit (6) make when divide-shut brake handle (4) are in rotatable state, protection linkage unit (6) make operating handle (5) are in non-rotatable state, and, protection linkage unit (6) make when operating handle (5) are in rotatable state, protection linkage unit (6) make divide-shut brake handle (4) are in non-rotatable state.
2. The secondary fusion on-column circuit breaker with the protection type isolating switch according to claim 1, wherein the protection linkage unit (6) is a plate body and is arranged on the mechanism box (1) in a sliding mode, a first sliding groove (7), a second sliding groove (8), a third sliding groove (9) and a fourth sliding groove (10) are arranged on the protection linkage unit (6), the first sliding groove (7) is horizontally arranged, the first sliding groove (7) and the second sliding groove (8) are communicated to form an L-shaped sliding groove, the third sliding groove (9) is vertically arranged, the third sliding groove (9) and the fourth sliding groove (10) are communicated to form an L-shaped sliding groove, one sliding end of the operating handle (5) is arranged in the first sliding groove (7) and the second sliding groove (8), one sliding end of the opening and closing handle (4) is arranged in the third sliding groove (9) and the fourth sliding groove (10), when the opening and closing handle (4) is located in the third sliding groove (9), the third sliding groove (9) is located in the second sliding groove (8), and the opening and closing handle (5) is located in the fourth sliding groove (8).
3. The secondary fused on-pole circuit breaker with the protective disconnecting switch according to claim 2, further comprising a telescopic unit (11), wherein the telescopic unit (11) is arranged on the mechanism box (1), the protective linkage unit (6) is movably arranged on the mechanism box (1), and the telescopic unit (11) enables the protective linkage unit (6) to be disconnected or connected with the opening and closing handle (4) and the operating handle (5).
4. A secondary fused on-column circuit breaker with a protective disconnector according to any of claims 1 to 3, characterized in that the disconnector (3) further comprises a support (12), a first rotation shaft (13), a connecting rod (14), a first insulator (15), a second insulator (16), a first disconnecting link (17), a second disconnecting link (18), said support (12) being arranged on the mechanism housing (1), said first rotation shaft (13) being rotatably arranged on said support (12) and connected with one end of the operating handle (5), said first insulator (15) being arranged on said support (12), said first disconnecting link (17) being arranged on said first insulator (15), said connecting rod (14) being arranged on said first rotation shaft (13), one end of said connecting rod (14) being hinged with said second insulator (16), one end of said second disconnecting link (18) being hinged with said arc extinguishing chamber (2), the other end of said second insulator (16) being hinged with said second disconnecting link (17) and said first disconnecting link (18).
5. The secondary fused on-pole circuit breaker with the protective disconnecting switch according to claim 4, characterized in that the arc extinguishing chamber (2) comprises an insulating shell (19) and a vacuum shell (20) arranged in the insulating shell (19), and further comprises a fixed end cover plate (21), a movable end cover plate (22), a first conducting rod (23) and a second conducting rod (24), wherein the first conducting rod (23) penetrates through the fixed end cover plate (21) and is arranged on the upper portion of the vacuum shell (20), and the second conducting rod (24) penetrates through the movable end cover plate (22) and is movably arranged at the bottom of the vacuum shell (20).
6. The secondary fused on-pole circuit breaker with protected isolator as in claim 5, wherein said moving end cover plate (22) is a bellows.
7. The secondary fused on-pole circuit breaker with the protective disconnecting switch according to claim 6, characterized in that a second rotating shaft (25) and a cam (26) arranged on the second rotating shaft (25) are arranged in the mechanism box (1), one end of the second rotating shaft (25) is connected with the opening and closing handle (4), and the cam (26) is abutted with the bottom of the second conducting rod (24).
8. The secondary fused on-pole circuit breaker with protective disconnect as defined in claim 7 wherein said cam (26) is an insulating material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310501263.XA CN116525327B (en) | 2023-05-06 | 2023-05-06 | Secondary fusion on-column circuit breaker with protection type isolating switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310501263.XA CN116525327B (en) | 2023-05-06 | 2023-05-06 | Secondary fusion on-column circuit breaker with protection type isolating switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116525327A true CN116525327A (en) | 2023-08-01 |
| CN116525327B CN116525327B (en) | 2023-10-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310501263.XA Active CN116525327B (en) | 2023-05-06 | 2023-05-06 | Secondary fusion on-column circuit breaker with protection type isolating switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116525327B (en) |
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| CN112017905A (en) * | 2020-09-28 | 2020-12-01 | 珠海许继电气有限公司 | Quick-acting magnetic control vacuum circuit breaker |
| CN213905270U (en) * | 2021-01-25 | 2021-08-06 | 李蓓蓓 | Separating brake device for circuit breaker |
| CN216487758U (en) * | 2022-01-14 | 2022-05-10 | 王友奇 | Electric shutting that power plant's electric overhaul was used |
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| CN115274348A (en) * | 2022-08-09 | 2022-11-01 | 浙江章开电器有限公司 | Breaker on primary and secondary fusion column with protection structure |
| CN218972023U (en) * | 2022-11-29 | 2023-05-05 | 青岛拓拓机电有限公司 | Detachable sealing pipe fitting |
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