CN110265257A - A kind of outdoor vacuum circuit breaker - Google Patents
A kind of outdoor vacuum circuit breaker Download PDFInfo
- Publication number
- CN110265257A CN110265257A CN201910451174.2A CN201910451174A CN110265257A CN 110265257 A CN110265257 A CN 110265257A CN 201910451174 A CN201910451174 A CN 201910451174A CN 110265257 A CN110265257 A CN 110265257A
- Authority
- CN
- China
- Prior art keywords
- rainwater
- vacuum circuit
- circuit breaker
- heat
- air
- 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 28
- 239000000758 substrate Substances 0.000 claims description 16
- 238000001816 cooling Methods 0.000 claims description 11
- 239000000203 mixture Substances 0.000 claims description 6
- 239000002184 metal Substances 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 5
- 230000017525 heat dissipation Effects 0.000 description 5
- 230000005855 radiation Effects 0.000 description 3
- 238000000889 atomisation Methods 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- 210000004262 dental pulp cavity Anatomy 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000007363 ring formation reaction Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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
- H01H33/662—Housings or protective screens
-
- 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
Abstract
The invention discloses a kind of outdoor vacuum circuit breakers, its structure includes fixed cross-arm, efficient circulation radiator, shell, inlet-outlet sleeve, support frame, vacuum interrupter, current transformer, the effect that the present invention has: efficient circulation radiator is kept watch by plate impeller or the kinetic energy of rainwater switchs to mechanical energy, and air-flow is sufficiently imported in water conservancy diversion cone-shaped hood, air-flow or rainwater are shunted by water conservancy diversion cone-shaped hood, air-flow or rainwater is set sufficiently to fill every hot channel, because insulating heat-conductive column is connected with tubular body metal heat-conducting tube, the even heat that vacuum circuit-breaker arc extinguishing chamber can be passed over is transferred in hot channel, efficiently heat is taken out of using the rainwater and air-flow of flowing, the temperature of major loop can be effectively reduced, to improve the rated current of vacuum circuit breaker.
Description
Technical field
The present invention relates to field of circuit breakers, particularly with regard to a kind of outdoor vacuum circuit breaker.
Background technique
With the continuous development of national economy, electric network composition and part throttle characteristics are increasingly complicated, in order to protect equipment and the person
Safety, to Supply Security, reliability, more stringent requirements are proposed, and the most common circuit safety device is vacuum circuit breaker, very
Empty breaker can be divided into house vacuum breaker and outdoor vacuum circuit breaker by indoor and outdoor, and outdoor vacuum circuit breaker is generally installed
On utility poles, it is chronically exposed to outdoor, in the environment such as high temperature, wet weather, to outdoor vacuum circuit breaker structure and operation
Safety constitutes a serious threat, and causes vacuum circuit breaker that can not efficiently radiate during the broiling summer, especially conductive major loop
Heat dissipation, and in overcast and rainy season, rainwater is easy to be collected on the top cover of shell, and slowly accumulates, and penetrates into vacuum circuit breaker
Inside makes circuit breaker short circuit, influences normal operation of circuit breaker and service life, it is therefore desirable to develop a kind of novel outdoor vacuum
Breaker, with this come solve existing outdoor vacuum circuit breaker during the broiling summer can not high efficiency and heat radiation, and in overcast and rainy season, rain
Water is easy to the problem of penetrating into inside vacuum circuit breaker, making circuit breaker short circuit.
The content of present invention
In view of the deficiencies of the prior art, the present invention is to realize by the following technical solutions: a kind of outdoor vacuum open circuit
Device, structure include fixed cross-arm, efficient circulation radiator, shell, inlet-outlet sleeve, support frame, vacuum interrupter, electric current
Mutual inductor, the shell two sides are equipped with inlet-outlet sleeve and axisymmetricly structure, and the shell rear and front end is equipped with true
Empty arc-chutes, the inlet-outlet sleeve are connected with vacuum interrupter, and the vacuum interrupter two sides are uniformly equidistantly equipped with
More than two current transformers, the current transformer and vacuum interrupter match, and the shell is rectangular configuration
And bottom parallel equidistant is set there are two support frame, and the cover top portion is equipped with efficient circulation radiator, and described is efficient
Circulation heat radiator front and rear sides are equipped with fixed cross-arm.
As advanced optimizing for the technical program, the efficient circulation radiator is by plate impeller, water conservancy diversion taper
Cover, substrate, frame, cooling mechanism composition, the frame roof is equipped with substrate and the two is using interference fit, the base
Plate center is equipped with water conservancy diversion cone-shaped hood, and the water conservancy diversion cone-shaped hood is chimeric to be installed on substrate, the water conservancy diversion cone-shaped hood top
The center in portion is equipped with plate impeller, and the base of frame is equipped with cooling mechanism, the cooling mechanism and water conservancy diversion taper
Cover matches.
As advanced optimizing for the technical program, the water conservancy diversion cone-shaped hood is by pod, suction nozzle, overflow port, row
Gas nozzle, convex block form, and more than two suction nozzles, the pod inner wall are uniformly equidistantly equipped on the water conservancy diversion cover outer wall
More than two overflow ports are uniformly equidistantly equipped with, the overflow port is connected with pod, in the pod bottom
Heart position is equipped with convex block, and the convex block bottom is uniformly equidistantly equipped with more than two exhaust nozzles.
As advanced optimizing for the technical program, the cooling mechanism is by hot channel, bracket, insulating heat-conductive circle group
At, bracket inner ring center be equipped with insulating heat-conductive circle, uniformly equidistantly set between the bracket and insulating heat-conductive circle
There are two or more hot channels, the hot channel is connected with insulating heat-conductive circle.
As advanced optimizing for the technical program, the hot channel is by atomizing mouth, tube body, interface, insulating heat-conductive
Column composition, the tube body front end are equipped with atomizing mouth, are equipped with interface at the top of the tube body, the tube body and exhaust nozzle pass through
Interface connection, the tube body rear end are equipped with insulating heat-conductive column, and the insulating heat-conductive column is connected with tube body.
As advanced optimizing for the technical program, the substrate is rectangular configuration and top is equipped with circular groove and side
Side from top to bottom tilts.
As advanced optimizing for the technical program, through-hole is evenly distributed on the atomization nozzle surface.
Beneficial effect
A kind of outdoor vacuum circuit breaker of the present invention, rationally, functional has the advantages that for design
Efficient circulation radiator of the present invention, plate impeller is kept watch or the kinetic energy of rainwater switchs to mechanical energy, and by air-flow
It sufficiently imports in water conservancy diversion cone-shaped hood, by water conservancy diversion cone-shaped hood, to air-flow, perhaps rainwater shunts and keeps air-flow or rainwater abundant
Each hot channel is filled, it, can be by vacuum circuit breaker arc extinguishing because insulating heat-conductive column is connected with tubular body metal heat-conducting tube
The even heat that room passes over collects in hot channel, using flowing rainwater and air-flow rapidly and efficiently by heat band
Out, the temperature of major loop can be effectively reduced, to improve the rated current of vacuum circuit breaker, existing outdoor vacuum is solved with this
Breaker during the broiling summer can not high efficiency and heat radiation, and in overcast and rainy season, rainwater is easy to penetrate into inside vacuum circuit breaker,
The problem of making circuit breaker short circuit；
Substrate, pod and exhaust nozzle and convex block of the present invention form main flow dividing structure, utilize substrate top circle
The structure of groove is arranged, air-flow or rainwater can be made to converge pod, avoid rainwater uneven distribution at the top of vacuum circuit breaker,
Because pod is hollow conic structure, the rainwater or air-flow flowed into inside pod can be collected in around convex block, and
And by exhaust nozzle shunt be discharged because each exhaust nozzle correspondence connect with a hot channel, shunting after rainwater with
Air-flow can sufficiently fill every hot channel, utilize rainwater and air-flow the heat band by tubular body rapidly and efficiently of flowing
Out；
Tube body and insulating heat-conductive column and insulating heat-conductive circle of the present invention form main radiator structure, each tube body edge
Insulating heat-conductive corral cyclization wall construction, tube body are connected by insulating heat-conductive column with insulating heat-conductive circle, and insulating heat-conductive column can be by vacuum
The heat transfer of arc-extinguishing chamber of circuit breaker passes through insulating heat-conductive circle being transferred to even heat in every root canal body to insulating heat-conductive circle
The metal heat-conducting tube in portion, makes heat be covered on tubular body, when air-flow or rainwater inflow tube body, can quickly absorb heat side by side
Out, to timely and effectively distribute heat；
Atomizing mouth and tube body and interface of the present invention form main exhaust structure, are evenly distributed on atomization nozzle surface logical
Hole enables the heat for concentrating on tubular body or rainwater to disperse to be discharged, and the hot-air being discharged using fluid is prevented to be collected at very
Around empty breaker, the heat dissipation effect of vacuum circuit breaker is influenced, while rainy day rainwater being avoided largely to be discharged, influences vacuum circuit breaker
The normal operation of power equipment below.
Detailed description of the invention
Upon reading the detailed description of non-limiting embodiments with reference to the following drawings, other feature of the invention,
Objects and advantages will become more apparent upon:
Fig. 1 is a kind of structural schematic diagram of outdoor vacuum circuit breaker of the present invention；
Fig. 2 is the schematic diagram of the section structure of efficient circulation radiator of the present invention；
Fig. 3 is the overlooking structure diagram of water conservancy diversion cone-shaped hood of the present invention；
Fig. 4 is the overlooking structure diagram of cooling mechanism of the present invention；
Fig. 5 is the structural schematic diagram of hot channel of the present invention.
In figure: fixed cross-arm -1, efficient circulation radiator -2, plate impeller -21, water conservancy diversion cone-shaped hood -22, pod -
22a, it suction nozzle -22b, overflow port -22c, exhaust nozzle -22d, convex block -22e, substrate -23, frame -24, cooling mechanism -25, dissipates
Heat pipeline -25a, atomizing mouth -25a1, tube body -25a2, interface -25a3, insulating heat-conductive column -25a4, bracket -2b, insulating heat-conductive
Circle -25c, shell -3, inlet-outlet sleeve -4, support frame -5, vacuum interrupter -6, current transformer -7.
Specific embodiment
To be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention, below with reference to
Specific embodiment and Detailed description of the invention, the preferred embodiment that the present invention is further explained.
Embodiment
Fig. 1-5 is please referred to, the present invention provides a kind of specific embodiment of outdoor vacuum circuit breaker；
Referring to Fig. 1, a kind of outdoor vacuum circuit breaker, structure includes fixed cross-arm 1, efficient circulation radiator 2, outer
Shell 3, inlet-outlet sleeve 4, support frame 5, vacuum interrupter 6, current transformer 7,3 two sides of shell are equipped with inlet-outlet sleeve
4 and axisymmetricly structure, 3 rear and front end of shell be equipped with vacuum interrupter 6, the inlet-outlet sleeve 4 and vacuum
Arc-chutes 6 are connected, 6 two sides of vacuum interrupter uniformly equidistantly set there are four current transformer 7, the electric current is mutual
Sensor 7 and vacuum interrupter 6 match, and the shell 3 is that rectangular configuration and bottom parallel equidistant set that there are two support frames
5, efficient circulation radiator 2 is equipped at the top of the shell 3,2 front and rear sides of efficient circulation radiator are equipped with solid
Determine cross-arm 1.
Referring to Fig. 2, the efficient circulation radiator 2 is by plate impeller 21, water conservancy diversion cone-shaped hood 22, substrate 23, frame
Frame 24, cooling mechanism 25 form, and the frame 24 is the length and width that rectangular configuration and length and width are greater than shell 3,
It can partially play the role of covering rainwater to 3 or less shell, substrate 23 is equipped at the top of the frame 24 and the two uses
Interference fit, 23 center of substrate are equipped with water conservancy diversion cone-shaped hood 22, and the water conservancy diversion cone-shaped hood 22 is chimeric to be mounted on base
On plate 23, the center at 22 top of water conservancy diversion cone-shaped hood is equipped with plate impeller 21, and the plate impeller 21 passes through two
The bearing strut of side is mounted on water conservancy diversion cone-shaped hood 22, and 24 bottom of frame is equipped with cooling mechanism 25, the heat dissipation machine
Structure 25 and water conservancy diversion cone-shaped hood 22 match.
Referring to Fig. 3, the water conservancy diversion cone-shaped hood 22 is by pod 22a, suction nozzle 22b, overflow port 22c, exhaust nozzle
22d, convex block 22e composition, the pod 22a be uniformly equidistantly set on hollow taper structure and outer wall there are four air inlet
The air inlet being equipped at the top of mouth 22b, the suction nozzle 22b is using concave inward structure, and each suction nozzle 22b is along pod
22a surrounds ringwall structure, the pod 22a inner wall uniformly equidistantly set there are four overflow port 22c, the overflow port
22c is connected with pod 22a, and the center of the bottom pod 22a is equipped with convex block 22e, and the convex block 22e is in
Conical structure and sharp end is upward, the bottom convex block 22e are uniformly equidistantly equipped with eight exhaust nozzle 22d, each row
Gas nozzle 22d surrounds ringwall structure along the bottom the convex block 22e thick body of circle.
Referring to Fig. 4, the cooling mechanism 25 is made of hot channel 25a, bracket 2b, insulating heat-conductive circle 25c,
Bracket 2b is equipped with insulating heat-conductive circle 25c, the bracket 2b and insulating heat-conductive circle for the center of circular configuration and inner ring
Uniformly the equidistant hot channel 25a equipped with eight, the hot channel 25a are connected with insulating heat-conductive circle 25c between 25c,
Each hot channel 25a surrounds ringwall structure along insulating heat-conductive circle 25c on bracket 2b.
Referring to Fig. 5, the hot channel 25a is by atomizing mouth 25a1, tube body 25a2, interface 25a3, insulating heat-conductive column
25a4 composition, the front end tube body 25a2 are equipped with atomizing mouth 25a1, and the atomizing mouth 25a1 is placed on the outer ring bracket 2b, institute
It is equipped with interface 25a3 at the top of the tube body 25a2 stated, the tube body 25a2 is connected with exhaust nozzle 22d by interface 25a3, described
It is equipped with outside metal heat-conducting tube body inside tube body 25a2 and is enclosed with insulating layer, the rear end tube body 25a2 is equipped with insulating heat-conductive column
25a4, the insulating heat-conductive column 25a4 are connected with tube body 25a2 interior metal heat conducting pipe, the insulating heat-conductive column 25a4 and
The connecting pin tube body 25a2 is using interference fit.
Referring to Fig. 2, the substrate 23 is rectangular configuration and top is equipped with circular groove and side from top to bottom tilts,
It is arranged using the structure of circular groove, so that rainwater is passed through circular groove by centralized collection in water conservancy diversion cone-shaped hood 22 in the rainy day, avoid
Rainwater uneven distribution at the top of vacuum circuit breaker.
Referring to Fig. 5, being evenly distributed with through-hole on the surface atomizing mouth 25a1, tube body will focus on using through-hole
Hot-air or rainwater dispersion discharge inside 25a2, prevent the hot-air of discharge to be collected at around vacuum circuit breaker, influence vacuum
The heat dissipation effect of breaker, while rainy day rainwater being avoided largely to be discharged, influence the normal of vacuum circuit breaker power equipment below
Operation.
It is as follows that it implements principle:
Efficient circulation radiator 2 of the present invention, plate impeller 21 is kept watch or the kinetic energy of rainwater switchs to mechanical energy, and by gas
Stream sufficiently imports in water conservancy diversion cone-shaped hood 22, and by water conservancy diversion cone-shaped hood 22, to air-flow, perhaps rainwater shunts and makes air-flow or rain
Water is sufficiently filled hot channel 25a and is discharged from atomizing mouth 25a1, because of substrate 23, pod 22a and exhaust nozzle 22d and convex
Block 22e forms main flow dividing structure, is equipped with circular groove at the top of substrate 23 and side from top to bottom tilts, utilize circular groove
Structure arrangement, rainwater can be made to concentrate in the rainy day and flow into circular groove, and pod 22a is continued to flow by circular groove, kept away
Exempt from rainwater uneven distribution at the top of vacuum circuit breaker, because pod 22a is hollow conic structure, flows into pod
Rainwater or air-flow inside 22a can collect in around convex block 22e, and shunt discharge by exhaust nozzle 22d, because of each exhaust
Mouth 22d correspondence is connected with a hot channel 25a, so the rainwater and air-flow after shunting can sufficiently fill every hot channel
25a utilizes rainwater and air-flow the taking heat out of rapidly and efficiently of flowing；Insulating heat-conductive column 25a4 and tube body 25a2 interior metal
Heat conducting pipe connection, the even heat that can pass over vacuum circuit-breaker arc extinguishing chamber collect in hot channel 25a, and utilize stream
Dynamic rainwater and air-flow taking heat out of rapidly and efficiently, can be effectively reduced the temperature of major loop, to improve vacuum circuit breaker
Rated current because tube body 25a2 and insulating heat-conductive column 25a4 and insulating heat-conductive circle 25c form main radiator structure, respectively
The tube body 25a2 surrounds ringwall structure along insulating heat-conductive circle 25c, and tube body 25a2 is led by insulating heat-conductive column 25a4 and insulation
Gas ket 25c connection, insulating heat-conductive column 25a4 can pass through by the heat transfer of vacuum circuit-breaker arc extinguishing chamber to insulating heat-conductive circle 25c
The metal heat-conducting tube of even heat being transferred to inside every root canal body 25a2 is made heat be covered on tube body by insulating heat-conductive circle 25c
Inside 25a2, as air-flow or rainwater inflow tube body 25a2, can heat quickly be absorbed and be discharged, thus timely and effectively by heat
It distributes, because atomizing mouth 25a1 and tube body 25a2 and interface 25a3 forms main exhaust structure, atomizing mouth 25a1 table
It is evenly distributed with through-hole on face, enables to concentrate on heat or rainwater inside tube body 25a2 and disperses to be discharged, prevents from utilizing fluid
The hot-air of discharge is collected at around vacuum circuit breaker, influences the heat dissipation effect of vacuum circuit breaker, while avoiding rainy day rainwater big
Amount discharge, influences the normal operation of vacuum circuit breaker power equipment below；It is equipped with, is solved with this through the above structure
Existing outdoor vacuum circuit breaker during the broiling summer can not high efficiency and heat radiation, and in overcast and rainy season, rainwater is easy to penetrate into true
Empty circuit breaker internal, the problem of making circuit breaker short circuit.
The basic principles, main features and advantages of the present invention have been shown and described above, the technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention can not only be realized in other specific forms under the premise of not departing from spirit of that invention or essential characteristic
The present invention will also have various changes and improvements, these changes and improvements both fall within scope of the claimed invention, therefore this hair
Bright claimed range is defined by appended claims and its equivalent, rather than above description limits.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (3)
1. a kind of outdoor vacuum circuit breaker, structure include fixed cross-arm (1), efficient circulation radiator (2), shell (3), into
Outlet casing tube (4), support frame (5), vacuum interrupter (6), current transformer (7), it is characterised in that:
Shell (3) two sides are equipped with inlet-outlet sleeve (4), and the shell (3) rear and front end is equipped with vacuum interrupter
(6), the vacuum interrupter (6) two sides are equipped with current transformer (7), and the shell (3) bottom is equipped with support frame (5),
Efficient circulation radiator (2) are equipped at the top of the shell (3), described efficient circulation radiator (2) front and rear sides are set
There is fixed cross-arm (1).
2. a kind of outdoor vacuum circuit breaker according to claim 1, it is characterised in that: the efficient circulation radiator
(2) it is made of plate impeller (21), water conservancy diversion cone-shaped hood (22), substrate (23), frame (24), cooling mechanism (25), the frame
Substrate (23) are equipped at the top of frame (24), the substrate (23) center is equipped with water conservancy diversion cone-shaped hood (22), the deflection cone
Plate impeller (21) are equipped at the top of shape cover (22), the frame (24) bottom is equipped with cooling mechanism (25).
3. a kind of outdoor vacuum circuit breaker according to claim 2, it is characterised in that: the water conservancy diversion cone-shaped hood (22) by
Pod (22a), suction nozzle (22b), overflow port (22c), exhaust nozzle (22d), convex block (22e) composition, the pod
(22a) outer wall is equipped with suction nozzle (22b), and the pod (22a) inner wall is equipped with overflow port (22c), the overflow
Mouth (22c) is connected with pod (22a), and the pod bottom (22a) is equipped with convex block (22e), the convex block (22e)
Bottom is equipped with exhaust nozzle (22d).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910451174.2A CN110265257B (en) | 2019-05-28 | 2019-05-28 | Outdoor vacuum circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910451174.2A CN110265257B (en) | 2019-05-28 | 2019-05-28 | Outdoor vacuum circuit breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110265257A true CN110265257A (en) | 2019-09-20 |
| CN110265257B CN110265257B (en) | 2021-01-19 |
Family
ID=67915618
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910451174.2A Active CN110265257B (en) | 2019-05-28 | 2019-05-28 | Outdoor vacuum circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110265257B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05196174A (en) * | 1991-07-26 | 1993-08-06 | Gec Alsthom Sa | Insulated vacuum valve |
| CN109003859A (en) * | 2017-06-06 | 2018-12-14 | 人民电器集团上海有限公司 | A kind of breaker resistant to high temperature |
-
2019
- 2019-05-28 CN CN201910451174.2A patent/CN110265257B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05196174A (en) * | 1991-07-26 | 1993-08-06 | Gec Alsthom Sa | Insulated vacuum valve |
| CN109003859A (en) * | 2017-06-06 | 2018-12-14 | 人民电器集团上海有限公司 | A kind of breaker resistant to high temperature |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110265257B (en) | 2021-01-19 |
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Effective date of registration: 20201230 Address after: 325600 271 weft seventeen Road, Yueqing Economic Development Zone, Wenzhou, Zhejiang Applicant after: LUOGAO ELECTRIC Co.,Ltd. Address before: 100085 Beijing city Haidian District Shuangqing Road No. 18 China Research Center for Eco Environmental Sciences Applicant before: Guo Junhua |
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