CN110349795A - Vacuum circuit breaker on outdoor lamppost - Google Patents
Vacuum circuit breaker on outdoor lamppost Download PDFInfo
- Publication number
- CN110349795A CN110349795A CN201910673854.9A CN201910673854A CN110349795A CN 110349795 A CN110349795 A CN 110349795A CN 201910673854 A CN201910673854 A CN 201910673854A CN 110349795 A CN110349795 A CN 110349795A
- Authority
- CN
- China
- Prior art keywords
- mounting
- circuit breaker
- vacuum circuit
- opening
- rod
- 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.)
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Classifications
-
- 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
-
- 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
- H01H9/02—Bases, casings, or covers
Landscapes
- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
Abstract
The invention discloses a kind of vacuum circuit breaker on outdoor lamppost, it is related to vacuum circuit breaker technical field, including vacuum circuit breaker body, mounting assembly and support component, mounting assembly includes the mounting rod that horizontal symmetrical is fixedly installed on carrier, opening is offered in the side of mounting rod, the opening direction of two mounting rods is oppositely arranged, mounting plate is fixedly installed in the bottom end two sides of vacuum circuit breaker body, two mounting plates are slidably mounted on respectively in the opening of two mounting rods, installation cavity is offered respectively in the opening one side wall of two mounting rods, elastic component is mounted in installation cavity, elastic component is connected with locking bar, offer the lockhole matched with locking bar respectively on two mounting plates, elastic component driving locking bar is plugged in lockhole, the locking assembly for the closure that will be open is installed in the separate one end connecting with carrier of mounting rod, support component It is connect with mounting rod；Have the function of being easily installed operation, improve installation effectiveness and mitigating operator's labor intensity.
Description
Technical field
The present invention relates to vacuum circuit breaker technical fields, more specifically, it relates to a kind of vacuum circuit breaker on outdoor lamppost.
Background technique
The dielectric of vacuum circuit breaker contact gap after its arc-extinguishing medium and arc extinguishing is gained the name due to being all high vacuum；It has
There is the advantages of small in size, light-weight, not have to maintenance suitable for frequent operation, arc extinguishing, using more universal in power distribution network；It is outdoor
Vacuum circuit breaker is suitable for three-phase alternating current 50Hz, and voltage rating is the electric system of 12kV, can cut-off, close line load
Electric current, overload current and short circuit current.It is widely used in the route point of substation, urban and rural power grids and industrial and mining enterprises' distribution system
Section, protection and control, are more suitable for the place of rural power grids and frequent operation.
Traditional vacuum circuit breaker on outdoor lamppost is provided with mounting plate in its pedestal two sides, and conventional installation method first will peace
It is fixed on utility poles to fill bracket, then vacuum circuit breaker is placed in mounting bracket, then passes through operator for bolt one
Each and every one is connected between mounting plate and mounting bracket, has the function that fixed installation with this；Vacuum circuit breaker on outdoor lamppost
Substantially in high altitude operation, this installation method is excessively cumbersome for installation, is not easy to operator's operation, while the labour for improving operator is strong
Degree.
Summary of the invention
In view of the deficiencies of the prior art, the present invention intends to provide a kind of vacuum circuit breaker on outdoor lamppost, tool
It is easily installed operation, improve installation effectiveness and mitigates operator's labor intensity.
To achieve the above object, the present invention provides the following technical scheme that
A kind of vacuum circuit breaker on outdoor lamppost, including vacuum circuit breaker body, for installing the installation group of vacuum circuit breaker body
Part and the support component for being used to support mounting assembly, the mounting assembly include the peace that horizontal symmetrical is fixedly installed on carrier
Fill bar, the side of the mounting rod along its length on offer opening, the openings of two mounting rods is towards with respect to setting
It sets, is fixedly installed mounting plate in the bottom end two sides of the vacuum circuit breaker body, two mounting plates are slidably installed respectively
In in the opening of two mounting rods, installation cavity is offered respectively in the opening one side wall of two mounting rods, in the peace
It is mounted on elastic component in behaveing affectedly, the elastic component is connected with locking bar, offers respectively on two mounting plates and locking bar phase
The lockhole of cooperation, the elastic component drive the locking bar to be plugged in the lockhole, are connect with carrier the mounting rod is separate
One end the locking assembly for the closure that will be open is installed, the support component connect with the mounting rod.
So set, first support component is installed on carrier, arrange two support rod horizontal symmetricals in mounting assembly
In the two sides of support component, reach support purpose；Then, by the mounting plate sliding plug in vacuum circuit breaker body in two supports
In opening on bar, during which, by the lasting progradation power of mounting plate, then by the effect of elastic component, finally wear locking bar
In the lockhole of mounting plate, the purpose being fixedly installed on two support rods to vacuum circuit breaker body is realized；Finally, passing through lock
The effect of tight component realizes that the locking to support rod upper opening acts on, by the further location and installation of mounting plate in two support rods it
Between；When needing to vacuum circuit breaker body from when being disassembled between support rod, by by locking assembly by opening on support rod
Mouth is opened, and by vacuum circuit breaker body towards opening outside direction movement, locking bar is retracted into mounting groove by the active force of mounting plate,
The purpose by vacuum circuit breaker body from quick-detach fast between two support rods can be realized, have and be easily installed operation, improve peace
It fills efficiency and mitigates the effect of operator's labor intensity.
Further setting: the locking assembly include latch, the mounting base being fixedly installed on mounting rod and with peace
The return spring for filling seat connection, offers mounting groove in the mounting base, is fixedly installed limit plate on the latch,
The both ends of the return spring contact at the slot bottom of limit plate and mounting groove respectively, in the opening one side wall of the mounting rod
Perforation is offered, one end sliding of the latch is arranged in the perforation, and the other end of latch is arranged in the installation
The slot bottom of slot is protruded from and is arranged outside the mounting base.
So set, pulling latch to make its end position when needing for vacuum circuit breaker body to be installed on mounting rod
In in perforation, mounting plate is installed in the opening of mounting rod, is plugged in its locking bar in the lockhole of mounting plate, it will be on latch
Power revocation be arranged in latch and perforate and contact at the another of opening by the return spring reset response in mounting groove
On side wall, realizes and the port sealing of opening is acted on；When needing to dismantle vacuum circuit breaker body from mounting rod, will lock
Plate is located at perforation lower section, the effect that can pull out the vacuum circuit breaker body on mounting rod.
Further setting: offering spliced eye on another side wall of the mounting rod, when original state, the latch
End is plugged in the spliced eye.
So set, being plugged in spliced eye when original state by the end of latch, latch is improved by mounting plate
The stability being fixed on mounting rod, and then improve the structural stability between vacuum circuit breaker body and mounting assembly.
Further setting: the installation cavity be provided with along the extending direction of opening it is multiple, in multiple installation cavitys
The elastic component and locking bar are installed.
It is plugged in the lockhole of mounting plate so set, being respectively acting on locking bar by multiple elastic components, improves mounting plate
Stability between mounting rod.
Further setting: the part that the locking bar protrudes from opening is set as round table-like or wedge block.
So set, pushing/pulling vacuum disconnected by external force when in the opening that mounting plate installs or removes in mounting rod
The purpose for locking bar being plugged in lockhole or being bounced back in installation cavity can be realized in road device ontology.
Further setting: offering connecting hole on another side wall of opening of two mounting rods, described when original state
The end of locking bar is plugged in the connecting hole.
So set, being plugged in connecting hole when original state by the end of locking bar, improves locking bar and fix mounting plate
In the stability on mounting rod, and then improve the structural stability between vacuum circuit breaker body and mounting assembly.
Further setting: it is located at the end outside the mounting base in the latch and is provided with pull ring.
So set, latch can be realized and be located at the effect slided in perforation, reach convenient for operation by operation pull ring
Purpose.
Further setting: separate one end connecting with carrier of opening of the mounting rod is set as outer flaring.
It is directed into opening so set, being easily installed plate grafting by outer flaring, achievees the purpose that be easily installed.
Further setting: the support component include multiple fixing hoops being sheathed on carrier, be fixedly installed in it is multiple
Connecting rod between fixing hoop and the support rod being fixedly installed between mounting rod and connecting rod, multiple fixing hoops
Connecting rod by being symmetrically arranged in fixing hoop two sides is fixedly connected, and is enclosed between the support rod, connecting rod and mounting rod
It is set as right triangular shape.
So set, realizing the purpose being fixedly mounted between support component and carrier, support rod, connection by fixing hoop
It is enclosed between bar and mounting rod and is set as right triangular shape, be conducive to improve the installation between support component and mounting assembly and stablize
Property.
By using above-mentioned technical proposal, the present invention compares compared with the prior art, has the advantage that
1, locking bar is made to be arranged in installation in the opening on two support rods the mounting plate sliding plug in vacuum circuit breaker body
In the lockhole of plate, realization is fixedly installed in the purpose on two support rods to vacuum circuit breaker body, meanwhile, pass through locking assembly
Effect is realized that the locking to support rod upper opening acts on, by the further location and installation of mounting plate between two support rods, is had just
In installation operation, improves installation effectiveness and mitigate the effect of operator's labor intensity；
2, it when original state, is plugged in spliced eye by the end of latch, the end of locking bar is plugged in connecting hole, is improved
Mounting plate is fixed on the stability on mounting rod by locking bar and latch, and then improves vacuum circuit breaker body and mounting assembly
Between structural stability；
3, the purpose being fixedly mounted between support component and carrier, support rod, connecting rod and mounting rod are realized by fixing hoop
Between enclose and be set as right triangular shape, be conducive to improve the mounting stability between support component and mounting assembly.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of vacuum circuit breaker on outdoor lamppost；
Fig. 2 is the cross-sectional view at vacuum circuit breaker on outdoor lamppost locking assembly；
Partial structure sectional view of the Fig. 3 between vacuum circuit breaker on outdoor lamppost locking assembly, locking bar and mounting plate.
In figure: 1, vacuum circuit breaker body；11, mounting plate；12, lockhole；2, mounting assembly；21, mounting rod；211, it opens
Mouthful；212, installation cavity；213, connecting hole；214, it perforates；215, spliced eye；216, outer flaring；22, elastic component；23, locking bar；3,
Support component；31, fixing hoop；32, connecting rod；33, support rod；4, locking assembly；41, latch；42, mounting base；421,
Mounting groove；43, return spring；44, limit plate；45, pull ring.
Specific embodiment
Vacuum circuit breaker on outdoor lamppost is described further referring to attached drawing.
A kind of vacuum circuit breaker on outdoor lamppost, as shown in Figure 1, including vacuum circuit breaker body 1, for installing vacuum circuit breaker
The mounting assembly 2 of device ontology 1 and the support component 3 for being used to support mounting assembly 2.
As shown in Figure 1, wherein support component 3 includes multiple fixing hoops 31 being successively sheathed on carrier along height, consolidates
Connecting rod 32 and one end that Dingan County is loaded between multiple fixing hoops 31 are fixedly installed in the support rod 33 of upper connecting rod 32；It is more
A fixing hoop 31 is fixedly connected by being symmetrically arranged in the connecting rod 32 of 31 two sides of fixing hoop.
As shown in Figure 1, mounting assembly 2 includes that horizontal symmetrical is fixedly installed in the mounting rod 21 on fixing hoop 31, and props up
It is enclosed between strut 33, connecting rod 32 and mounting assembly 2 and is set as right triangular shape.
In conjunction with shown in Fig. 2 and Fig. 3, the side of mounting rod 21 along its length on offer opening 211, two mounting rods
21 opening 211 is towards being oppositely arranged；Mounting plate 11, two peaces are fixedly installed in the bottom end two sides of vacuum circuit breaker body 1
Loading board 11 is slidably mounted on respectively in the opening 211 of two mounting rods 21.
In conjunction with shown in Fig. 2 and Fig. 3, installation cavity 212 is offered respectively in 211 lower sidewalls of opening of two mounting rods 21,
Multiple installation cavitys 212 are placed equidistant with along the extending direction of opening 211；It is mounted on elastic component 22 in installation cavity 212, such as resets
Spring, one end of elastic component 22 are fixedly connected with locking bar 23, and locking bar 23 protrude from opening 211 part be set as it is round table-like or
Wedge block；Offer the lockhole 12 matched with locking bar 23 respectively on two mounting plates 11, vacuum circuit breaker body 1 is installed on
When on arrangement 2, elastic component 22 drives locking bar 23 to be plugged in lockhole 12, realizes vacuum circuit breaker body 1 and mounting assembly 2
Fixed installation effect.
In conjunction with shown in Fig. 2 and Fig. 3, to improve locking bar 23 to the locking stability of mounting plate 11, in opening for two mounting rods 21
Offer connecting hole 213 on mouthful 211 top side walls, when original state, the end of locking bar 23 is plugged in the connecting hole 213.
In conjunction with shown in Fig. 2 and Fig. 3, it is equipped in the separate one end being connect with carrier of mounting rod 21 and 211 is closed for that will be open
The locking assembly 4 of conjunction.
In conjunction with shown in Fig. 2 and Fig. 3, locking assembly 4 includes latch 41, the mounting base 42 being fixedly installed on mounting rod 21
And one end and mounting base 42 contradict the return spring 43 of connection；Mounting groove 421, mounting groove 421 are offered in mounting base 42
Notch be fixedly connected with mounting rod 21；Limit plate 44 is integrally fixedly installed on latch 41, return spring 43 is sheathed on
The outer end and both ends of latch 41 contact at the slot bottom of limit plate 44 and mounting groove 421 respectively；In the opening 211 of mounting rod 21
Perforation 214 is offered on the side wall of top, one end sliding of latch 41 is arranged in perforation 214.
In conjunction with shown in Fig. 2 and Fig. 3, the other end of latch 41 is arranged in the slot bottom of mounting groove 421 and protrudes from mounting base
It is arranged outside 42, meanwhile, for it is integrally fixed to be located at the end outside mounting base 42 in latch 41 convenient for operating to latch 41
It is provided with pull ring 45.
In conjunction with shown in Fig. 2 and Fig. 3, the stability in opening 211 is lock onto mounting plate 11 for raising latch 41, is being pacified
It fills and offers spliced eye 215 on the top side wall of bar 21, when original state, the end of latch 41 is plugged in spliced eye 215.
For convenient for the mounting plate 11 in vacuum circuit breaker body 1 is installed in the opening 211 of mounting rod 21, the opening of mounting rod 21
211 separate one end connecting with connecting rod 32 are set as outer flaring 216.
Working principle: firstly, the fixing hoop 31 in support component 3 is installed on carrier, make support rod 33, connecting rod
The stable state for being set as right triangular shape is enclosed between 32 and mounting rod 21；Two support rods, 33 horizontal symmetrical in mounting assembly 2
Two sides are arranged in, by 11 sliding plug of mounting plate in vacuum circuit breaker body 1 in the opening 211 on two support rods 33, the phase
Between, by the lasting progradation power of mounting plate 11, it is arranged in locking bar 23 respectively in the lockhole 12 of mounting plate 11, and be arranged in
It is open in the connecting hole 213 of 211 top side walls, realizes the mesh being fixedly installed on two support rods 33 to vacuum circuit breaker body 1
's；In addition, latch 41 passes through the effect of return spring 43, it is plugged in the end of its latch 41 in perforation 214, realization pair
The locking of 33 upper opening 211 of support rod acts on, by the further location and installation of mounting plate 11 between two support rods 33；When needs pair
From when disassembling between support rod 33, the direction by the way that latch 41 to be deviated to perforation 214 moves vacuum circuit breaker body 1,
The opening 211 on support rod 33 is opened, vacuum circuit breaker body 1 is flared the movement of 216 directions outwardly, locking bar 23 passes through installation
The active force of plate 11 is retracted into mounting groove 421, can be realized and quickly tear vacuum circuit breaker body 1 between two support rods 33 open
The purpose unloaded has the function of being easily installed operation, improve installation effectiveness and mitigating operator's labor intensity.
The embodiment of present embodiment is presently preferred embodiments of the present invention, not limits protection of the invention according to this
Range, therefore: the equivalence changes that all structures under this invention, shape, principle are done, should all be covered by protection scope of the present invention it
It is interior.
Claims (9)
1. a kind of vacuum circuit breaker on outdoor lamppost, including vacuum circuit breaker body (1), for installing vacuum circuit breaker body (1)
Mounting assembly (2) and be used to support the support components (3) of mounting assembly (2), it is characterised in that: the mounting assembly (2)
Be fixedly installed on the mounting rod (21) on carrier including horizontal symmetrical, the side of the mounting rod (21) along its length on
It offers opening (211), the opening (211) of two mounting rods (21) is towards being oppositely arranged, in the vacuum circuit breaker body
(1) bottom end two sides are fixedly installed mounting plate (11), and two mounting plates (11) are slidably mounted on two installations respectively
In the opening (211) of bar (21), installation cavity is offered respectively in opening (211) one side wall of two mounting rods (21)
(212), it is mounted on elastic component (22) in the installation cavity (212), the elastic component (22) is connected with locking bar (23), two
The lockhole (12) matched with locking bar (23) is offered on the mounting plate (11) respectively, the elastic component (22) drives the lock
Bar (23) is plugged in the lockhole (12), is equipped in the separate one end connecting with carrier of the mounting rod (21) for that will open
The locking assembly (4) of mouth (211) closure, the support component (3) connect with the mounting rod (21).
2. vacuum circuit breaker on outdoor lamppost according to claim 1, it is characterised in that: the locking assembly (4) includes lock
Tight plate (41), the mounting base (42) being fixedly installed on mounting rod (21) and the return spring being connect with mounting base (42)
(43), it is offered on the mounting base (42) mounting groove (421), is fixedly installed limit plate on the latch (41)
(44), the both ends of the return spring (43) contact at the slot bottom of limit plate (44) and mounting groove (421) respectively, in the peace
It fills and is offered perforation (214) in opening (211) one side wall of bar (21), one end sliding of the latch (41) is arranged in described
It perforates on (214), the slot bottom that the other end of latch (41) is arranged in the mounting groove (421) protrudes from the mounting base (42)
Outer arrangement.
3. vacuum circuit breaker on outdoor lamppost according to claim 2, it is characterised in that: in the mounting rod (21) other side
It is offered on wall spliced eye (215), when original state, the end of the latch (41) is plugged in the spliced eye (215).
4. vacuum circuit breaker on outdoor lamppost according to claim 1, it is characterised in that: the installation cavity (212) is along opening
(211) extending direction is provided with multiple, is mounted on the elastic component (22) and locking bar in multiple installation cavitys (212)
(23).
5. vacuum circuit breaker on outdoor lamppost according to claim 1 or 4, it is characterised in that: the locking bar (23) protrudes from
The part of opening (211) is set as round table-like or wedge block.
6. vacuum circuit breaker on outdoor lamppost according to claim 5, it is characterised in that: in opening for two mounting rod (21)
It is offered connecting hole (213) on mouthful (211) another side wall, when original state, the end of the locking bar (23) is plugged in the company
It connects in hole (213).
7. vacuum circuit breaker on outdoor lamppost according to claim 2, it is characterised in that: be located at institute in the latch (41)
It states the end of mounting base (42) outside and is provided with pull ring (45).
8. vacuum circuit breaker on outdoor lamppost according to claim 1, it is characterised in that: the opening of the mounting rod (21)
(211) separate one end connecting with carrier is set as outer flaring (216).
9. vacuum circuit breaker on outdoor lamppost according to claim 1, it is characterised in that: the support component (3) includes more
A fixing hoop (31) being sheathed on carrier, the connecting rod (32) being fixedly installed between multiple fixing hoops (31) and solid
Dingan County passes through symmetrical cloth loaded on the support rod (33) between mounting rod (21) and connecting rod (32), multiple fixing hoops (31)
The connecting rod (32) for being placed in fixing hoop (31) two sides is fixedly connected, and the support rod (33), connecting rod (32) and mounting rod
(21) it is enclosed between and is set as right triangular shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910673854.9A CN110349795B (en) | 2019-07-25 | 2019-07-25 | Outdoor vacuum circuit breaker on post |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910673854.9A CN110349795B (en) | 2019-07-25 | 2019-07-25 | Outdoor vacuum circuit breaker on post |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110349795A true CN110349795A (en) | 2019-10-18 |
| CN110349795B CN110349795B (en) | 2020-12-01 |
Family
ID=68178772
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910673854.9A Active CN110349795B (en) | 2019-07-25 | 2019-07-25 | Outdoor vacuum circuit breaker on post |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110349795B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114400163A (en) * | 2021-12-21 | 2022-04-26 | 博时达集团有限公司 | Outdoor vacuum circuit breaker |
| CN114743838A (en) * | 2022-04-22 | 2022-07-12 | 祥兴电气有限公司 | Breaker on deep fusion column |
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| US20040212943A1 (en) * | 2003-04-24 | 2004-10-28 | Lg Industrial Systems Co., Ltd. | Main switch conveying apparatus for vacuum circuit breaker |
| CN204257494U (en) * | 2014-12-13 | 2015-04-08 | 朝瑞电气有限公司 | adjustable outdoor vacuum switch installing rack |
| CN205016448U (en) * | 2015-09-09 | 2016-02-03 | 扬州新概念电气有限公司 | Permanent magnetism circuit breaker on outdoor post of control unit and ontology integration an organic whole |
| CN108054667A (en) * | 2017-12-29 | 2018-05-18 | 川铁电气（天津）股份有限公司 | 27.5kV indoor vacuum circuit breakers are shaken into mechanism mounting assembly |
| CN208061940U (en) * | 2017-11-20 | 2018-11-06 | 共信电力科技有限公司 | Outdoor vacuum circuit breaker |
| CN208970421U (en) * | 2018-10-27 | 2019-06-11 | 乾瑞电气有限公司 | A kind of mounting structure of vacuum circuit breaker on outdoor lamppost |
-
2019
- 2019-07-25 CN CN201910673854.9A patent/CN110349795B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040212943A1 (en) * | 2003-04-24 | 2004-10-28 | Lg Industrial Systems Co., Ltd. | Main switch conveying apparatus for vacuum circuit breaker |
| CN204257494U (en) * | 2014-12-13 | 2015-04-08 | 朝瑞电气有限公司 | adjustable outdoor vacuum switch installing rack |
| CN205016448U (en) * | 2015-09-09 | 2016-02-03 | 扬州新概念电气有限公司 | Permanent magnetism circuit breaker on outdoor post of control unit and ontology integration an organic whole |
| CN208061940U (en) * | 2017-11-20 | 2018-11-06 | 共信电力科技有限公司 | Outdoor vacuum circuit breaker |
| CN108054667A (en) * | 2017-12-29 | 2018-05-18 | 川铁电气（天津）股份有限公司 | 27.5kV indoor vacuum circuit breakers are shaken into mechanism mounting assembly |
| CN208970421U (en) * | 2018-10-27 | 2019-06-11 | 乾瑞电气有限公司 | A kind of mounting structure of vacuum circuit breaker on outdoor lamppost |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114400163A (en) * | 2021-12-21 | 2022-04-26 | 博时达集团有限公司 | Outdoor vacuum circuit breaker |
| CN114743838A (en) * | 2022-04-22 | 2022-07-12 | 祥兴电气有限公司 | Breaker on deep fusion column |
| CN114743838B (en) * | 2022-04-22 | 2023-11-10 | 祥兴电气有限公司 | Circuit breaker on degree of depth fuses post |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110349795B (en) | 2020-12-01 |
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