CN108538689A - A kind of integration enclosed type expulsion fuse - Google Patents
A kind of integration enclosed type expulsion fuse Download PDFInfo
- Publication number
- CN108538689A CN108538689A CN201810599740.XA CN201810599740A CN108538689A CN 108538689 A CN108538689 A CN 108538689A CN 201810599740 A CN201810599740 A CN 201810599740A CN 108538689 A CN108538689 A CN 108538689A
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- Prior art keywords
- fuse
- enclosed type
- casing
- expulsion fuse
- integration
- 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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- 230000010354 integration Effects 0.000 title claims description 16
- 239000012212 insulator Substances 0.000 claims abstract description 21
- 238000009422 external insulation Methods 0.000 claims abstract description 19
- 238000009826 distribution Methods 0.000 claims abstract description 18
- 239000004020 conductor Substances 0.000 claims abstract description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910052802 copper Inorganic materials 0.000 claims abstract description 6
- 239000010949 copper Substances 0.000 claims abstract description 6
- 229910052573 porcelain Inorganic materials 0.000 claims abstract 3
- 230000004927 fusion Effects 0.000 claims description 19
- 230000006835 compression Effects 0.000 claims description 5
- 238000007906 compression Methods 0.000 claims description 5
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 238000009434 installation Methods 0.000 abstract description 21
- 238000005516 engineering process Methods 0.000 abstract description 9
- 238000012423 maintenance Methods 0.000 abstract description 8
- 238000009413 insulation Methods 0.000 abstract description 6
- 238000010891 electric arc Methods 0.000 description 14
- 238000013461 design Methods 0.000 description 8
- 230000009471 action Effects 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000013475 authorization Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000002788 crimping Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000002309 gasification Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009440 infrastructure construction Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
- H01H85/02—Details
- H01H85/04—Fuses, i.e. expendable parts of the protective device, e.g. cartridges
- H01H85/041—Fuses, i.e. expendable parts of the protective device, e.g. cartridges characterised by the type
- H01H85/042—General constructions or structure of high voltage fuses, i.e. above 1000 V
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
- H01H85/02—Details
- H01H85/04—Fuses, i.e. expendable parts of the protective device, e.g. cartridges
- H01H85/05—Component parts thereof
- H01H85/165—Casings
- H01H85/175—Casings characterised by the casing shape or form
- H01H85/1755—Casings characterised by the casing shape or form composite casing
Landscapes
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Fuses (AREA)
Abstract
The present invention relates to a kind of integrated enclosed type expulsion fuses, including fuse bodies, setting are in outer insulated porcelain sleeve（2）Interior upper electrode（4）, lower electrode（8）；External insulation insulator（2）Lower port insulative cap is installed（9）, the top of the fuse bodies is equipped with integrated casing（1）, cable can ensure that all insulation of top enter line side, hermetically sealed, full-shield performance requirement by American elbow-type head directly grafting, and without exposed electrical body, standardization is installed, and equipment install convenient and security reliability are greatly improved；The lower side outlet of the fuse bodies is equipped with mother casing（10）, and be attached by copper conductor and lower electrode, side goes out mother casing by the integrative installation technology of bus tie realization and distribution transformer, greatly reduces fuse mounting height, improves fuse installation operation, the convenience of O＆M maintenance and safety.
Description
Technical field
The present invention relates to controller switching equipment technical fields, in particular to a kind of integrated enclosed type expulsion fuse.
Background technology
Guo Wang companies public distribution transformers platform is about more than 400 ten thousand shared at present, the distribution network for the load in power supply area
Still with average annual 5%~6% speed rapid growth, distribution transformer platform construction retrofit and maintenance work task are heavy on column, to be promoted
The construction retrofit efficiency of pole type transformer platform reduces O＆M cost, and company's transport inspection department tissue at the beginning of 2016, China Power science is ground
Study carefully institute to take the lead project research team, further investigate conventional pole type transformer platform there are the problem of, it is proposed that transformation on integrated column
Device platform construction scheme, completes《10kV integrations pole type transformer platform modular design and inspection criterion》.In recent years, Chinese society
Productivity and Living consumption fast lifting, country continue to increase town and country infrastructure construction input, and power distribution network is as town and country
The important infrastructure of social production and resident living has great supporting role.10kV pole type transformer platforms are user orienteds
The important link directly powered, there are still series of technical not yet to solve at present, is carried to the power supply supportability of power distribution network
It rises and causes more serious influence.
Conventional pole type transformer platform is to realize distribution transformer overload, short-circuit protection and isolated from power function, high-pressure side
Mostly use fuse switch or protected cut-out.Fuse switch contact is exposed, there are high failure rate, easy pollution flashover, easily
Be detached from etc. drawbacks, according to incompletely statistics, the ratio that such non-load failure accounts for fuse switch total failare be up to 60% with
On, the number of line tripping caused by fuse switch failure accounts for 30% or more total tripping times every year；Due to the existing country
The fuse blows characteristic used causes transformer burnout failure 6 every year in the presence of the defect that cannot meet high short circuit interruption requirement
Wan Duoqi；Fuse switch or protected cut-out are all installed on high-altitude, and O＆M is inconvenient for operation, and structural shape cannot all solve
Certainly with the problem of transformer integrative installation technology, nuclear interface standardizing and working at height inconvenience.
Such as the Chinese utility model patent that Authorization Notice No. is 205881850 U of CN, it discloses a kind of totally-enclosed
Expulsion fuse, including insulator and the insulating sleeve that is arranged in the insulator, and be arranged in the insulating sleeve
Interior Fuse assembly, the upper outlet terminal and lower wire end being arranged on the insulator respectively with it is dynamic in the Fuse assembly
Conducting rod static contact and moving contact electrical connection, further include Mume flower contact and flange in the Fuse assembly, the Mume flower contact to
The flange extends to form the elastic portion of several groups bending, the co-operating contact elastic card formed in the elastic portion and the flange
It connects.The totally-enclosed expulsion fuse of the utility model, which has, to have good stability, and does not generate the smaller advantage of electric arc, calorific value.
But enterprising line end is to use insulated conductor（Touching can not be charged）The mode of crimping cable connector connection, fuse inlet wire suitable for reading
Connection operation, O＆M maintenance are inconvenient, and there are security risks.
In another example Authorization Notice No. is the Chinese utility model patent of 206532749 U of CN, it discloses a kind of enclosed types
Expulsion fuse, including fuse, the fuse have cavity, cartridge fuse are equipped in the cavity；Also
Monitoring component including being installed on the fuse, the position of the monitoring component are corresponding with the position of the cartridge fuse；
The monitoring component is used to monitor conducting or the blown state of the fuse.The enclosed type expulsion fuse is equipped with monitoring portion
Part is conducive to shorten the repair time, improve to determine that the abort situation of distribution transformer or circuit provides condition to be quick
Overhaul efficiency.But its lower outlet lead directly leads out fuse, can not be mounted directly with distribution transformer, fuse
Mounting height is higher..
Invention content
In order to solve above-mentioned technological deficiency of the existing technology, the present invention is using integrated enclosed type injecting type fusing
Device, operation-current 12.5kA are designed by aerogenesis arc extinguishing, insulating, realize all insulation, totally-enclosed, high short circuit interruption
The features such as ability；It simultaneously pair is standardized design with high-voltage isulation drainage thread, transformer interface part, realizes and transformer
Integration assembly, hence it is evident that reduce fuse and trip caused by failure or defect or transformer burnout failure, can low latitude operation, just
Just O＆M overhauls, and fully guarantees personal safety and equipment safety.
A kind of integrated enclosed type expulsion fuse according to the invention, including fuse bodies, setting are in external insulation
Upper electrode, lower electrode in insulator；The lower port of external insulation insulator is equipped with insulative cap, the fuse bodies it is upper
Portion is equipped with integrated casing, and cable by American elbow-type head directly grafting, can ensure all insulation, the Quan Mi of top enter line side
Envelope, full-shield performance requirement, standardization installation, greatly improve equipment install convenient and security reliability；The fusing
The lower side outlet of device main body is equipped with mother casing, and is attached by copper conductor and lower electrode, to pass through lower part
Electrode is connect with fusion tube lower end, and side goes out integrative installation technology of the mother casing by bus tie realization and distribution transformer, greatly
Fuse mounting height is reduced greatly, improves fuse installation operation, the convenience of O＆M maintenance and safety；The fusing
The lower port of the external insulation insulator of device main body is to mother sleeve portion external insulation design full skirt, when meeting fuse action, from
Creepage distance between the electric arc that lower port ejects and mother casing and distribution transformer junction grounding body.
Preferably, the integrated casing is connect with external insulation insulator, and coupling part is carried out close using seal washer
Envelope, to ensure the insulation performance and leakproofness on fuse top.
In any of the above-described scheme preferably, arc-extinguishing stick, extinguishing arc cylinder and fusion tube are additionally provided in the external insulation insulator.
In any of the above-described scheme preferably, the lower side outlet of the fuse bodies passes through copper conductor and lower part
Electrode connects.
In any of the above-described scheme preferably, the mother casing is integrated with distribution transformer by bus tie
Connection, greatly reduces fuse mounting height, improves fuse installation operation, the convenience of O＆M maintenance and safety.
In any of the above-described scheme preferably, the upper electrode uses upper/lower terminal petal type structure of contact terminal.
In any of the above-described scheme preferably, the petal type structure of contact terminal is equipped with upper end petal contact and lower end is spent
Valve contact.
In any of the above-described scheme preferably, the flower of the lower part terminals and upper electrode upper end of the integration casing
Flap-type contact connects, and is connected by the upper end of the petal contact of upper electrode lower end and fusion tube, to ensure connection reliability.
In any of the above-described scheme preferably, the movable part of the fusion tube is fixed by spring compression.When work, melt
Pipe movable part is fixed by spring compression, when fuse acts, electric arc is formed using melt itself fusing, then in electric arc
Under high temperature action, the gas exhausted material gasification in arc-extinguishing tube is generated into bulk gas, by this gas in current over-zero by electric arc
It blows out, and is released the movable part of fusion tube outside fuse by spring effect, electrical fracture is formed, to cut-off circuit
Cut off failure or faulty equipment.
In any of the above-described scheme preferably, there are gaps between the arc-extinguishing stick and extinguishing arc cylinder.Electric arc is in arc-extinguishing stick
Extend in slit between extinguishing arc cylinder, the resistance of electric arc increases, and arc-extinguishing stick, extinguishing arc cylinder will produce arc-extinguishing gas and blow out electricity
Arc can extinguish load current.
In any of the above-described scheme preferably, the middle part of the external insulation insulator is laterally installed with installation anchor ear, is used for
The installation and fixation of fuse.
In any of the above-described scheme preferably, the upper electrode and lower electrode pass through silver-plated process, ensure fusion tube
Mechanical stability during cut-offfing ejection, and more high current can be born, it is unlikely to be burnt.
Description of the drawings
Fig. 1 is the structural schematic diagram of a preferred embodiment of integrated enclosed type expulsion fuse according to the invention.
Fig. 2 is the embodiment illustrated in fig. 1 top electrode of integrated enclosed type expulsion fuse according to the invention
Structural schematic diagram.
Description of the drawings：
Integral type casing 1, external insulation insulator 2, seal washer 3, upper electrode 4, upper end petal contact 41, lower end petal contact
42, arc-extinguishing stick 5, extinguishing arc cylinder 6, fusion tube 7, lower electrode 8, insulative cap 9, mother casing 10, installation anchor ear 11.
Specific implementation mode
The following description is substantially only exemplary and is not intended to the limitation disclosure, application or purposes.Below
The specific implementation mode of integrated enclosed type expulsion fuse of the invention is further described in conjunction with Figure of description.
As shown in Figure 1, a preferred embodiment structural representation of integration enclosed type expulsion fuse according to the invention
Figure.The purpose of the present invention is to provide a kind of integrated enclosed type expulsion fuse, including fuse bodies, setting are exhausted outside
Upper electrode 4, lower electrode 8 in edge insulator 2；The lower port of external insulation insulator 2 is equipped with insulative cap 9, the fuse
The top of main body is equipped with integrated casing 1, and cable can ensure that top enter line side is entirely exhausted by American elbow-type head directly grafting
Edge, hermetically sealed, full-shield performance requirement, standardization installation, greatly improve equipment install convenient and security reliability；Institute
The lower side outlet for stating fuse bodies is equipped with mother casing 10, and is attached by copper conductor and lower electrode, to
It is connect with 7 lower end of fusion tube by lower electrode 8, side goes out one of the mother casing by bus tie realization and distribution transformer
Change installation, greatly reduce fuse mounting height, improves fuse installation operation, the convenience and safety of O＆M maintenance
Property, the lower port of external insulation insulator 2 is to 10 part external insulation design full skirt of mother casing, when meeting fuse action, under
Creepage distance between the electric arc that port injection goes out and mother casing 10 and distribution transformer junction grounding body.
In the present embodiment, the integrated casing 1 is connect with external insulation insulator 2, and coupling part uses seal washer 3
It is sealed, to ensure the insulation performance and leakproofness on fuse top.
In the present embodiment, arc-extinguishing stick 5, extinguishing arc cylinder 6 and fusion tube 7 are additionally provided in the external insulation insulator 2.
In the present embodiment, the lower side outlet of the fuse bodies is connect by copper conductor with lower electrode 8.
In the present embodiment, the mother casing 10 is by bus tie connection integrated with distribution transformer, significantly
Fuse mounting height is reduced, fuse installation operation, the convenience of O＆M maintenance and safety are improved.
In the present embodiment, the upper electrode 4 uses upper/lower terminal petal type structure of contact terminal.
In the present embodiment, the petal type structure of contact terminal is equipped with upper end petal contact 41 and lower end petal contact 42
（As shown in Figure 2）.
In the present embodiment, the lower part terminals of the integrated casing 1 and the petal type contact of 4 upper end of upper electrode connect
It connects, and is connect with the upper end of fusion tube 7 by the petal contact of 4 lower end of upper electrode, to ensure connection reliability.
In the present embodiment, the movable part of the fusion tube 7 is fixed by spring compression.When work, 7 movable part of fusion tube
It is fixed by spring compression, when fuse acts, electric arc is formed using melt itself fusing, then in the high temperature action of electric arc
Under, the gas exhausted material gasification in arc-extinguishing tube is generated into bulk gas, blows out electric arc in current over-zero by this gas, and
The movable part of fusion tube 7 is released outside fuse by spring effect, forms electrical fracture, failure is cut off to cut-off circuit
Or faulty equipment.
In the present embodiment, there are gaps between the arc-extinguishing stick 5 and extinguishing arc cylinder 6.Electric arc arc-extinguishing stick and extinguishing arc cylinder it
Between slit in extend, the resistance of electric arc increases, and arc-extinguishing stick, extinguishing arc cylinder will produce arc-extinguishing gas and blow out electric arc, can extinguish
Load current.
In the present embodiment, the middle part of the external insulation insulator 2 is laterally installed with installation anchor ear 11, is used for the peace of fuse
It fills and fixed.
In the present embodiment, the upper electrode 4 and lower electrode 8 pass through silver-plated process, ensure that fusion tube is cut-offfing ejection
Mechanical stability in the process, and more high current can be born, it is unlikely to be burnt.
The present invention has the following advantages：
1, integrated enclosed type expulsion fuse uses integral type insulating structure design, and electrification position is completely built-in, solves
Traditional fuse switch contact is exposed, easy pollution flashover, be easily detached from, etc. drawbacks, greatly improve the insulating degree of circuit.
2, fusion tube and electrification position built in, can effectively avoid electrode because outside environmental elements influence its performance, greatly promote
The safety in operation and stability of circuit.
3, top inlet interface standardized designs, using integral type casing, facilitate high-voltage isulation drainage thread directly with fusing
Device grafting；It realizes with the direct integrative installation technology of distribution transformer together, and fuse before can not achieve this block.
4, fuse of the present invention passes through interface section（Inlet wire）Standard design, realize high-voltage isulation drainage thread（Shielding
Cable can charge touching）Directly plug is carried out with fuse to connect, insulated conductor is used instead of previous fuse（It can not band
Electricity touching）The mode of crimping cable connector connection, ensure all insulation of top enter line side, hermetically sealed, full-shield performance requirement,
Standardization installation, greatly improves equipment install convenient and security reliability.
5, lower part outlet interface standardized designs are directly connected by bus tie with transformer using mother formula casing
It connects, realizes and transformer integrative installation technology.
6, when fuse acts, fusion tube can wash lower part insulative cap open and external insulation insulator is stretched out in part, be formed visual bright
Aobvious cut-off point.
7, by with transformer integrative installation technology, greatly reduce the mounting height of fuse, improve fuse installation
Operation, the convenience of O＆M maintenance and safety.
8, fuse of the present invention considerably reduces mounting height by the integrative installation technology with distribution transformer, to
Low latitude Job Operations are realized, its O＆M is facilitated to overhaul, previous fuse is mounted at least 8 meters or more of high-altitude, and this patent
Fuse is only installed on 2.5-3 meters of low latitude position.
It will be apparent to those skilled in the art that the integrated enclosed type expulsion fuse of the present invention includes in this specification
The arbitrary combination of each section.As space is limited and in order to keep specification concise, these combinations are not discussed in detail one by one herein, but
After having seen this specification, the scope of the present invention constituted that arbitrarily combines of each section being made of this specification has not been sayed certainly
It is bright.
Claims (10)
1. a kind of integration enclosed type expulsion fuse, including fuse bodies, setting are in outer insulated porcelain sleeve（2）Interior top
Electrode（4）, lower electrode（8）；External insulation insulator（2）Lower port insulative cap is installed（9）, it is characterised in that：It is described molten
The top of disconnected device main body is equipped with integrated casing（1）；The lower side outlet of the fuse bodies is equipped with mother casing（10）.
2. integration enclosed type expulsion fuse as described in claim 1, it is characterised in that：Integrated casing（1）Pass through
The platen on top and external insulation insulator（2）It is connected, ensures that integrated casing is fitted close with insulated porcelain sleeve inner cavity, coupling part
Using seal washer（3）It is sealed.
3. integration enclosed type expulsion fuse as claimed in claim 1 or 2, it is characterised in that：External insulation insulator（2）It is interior
It is additionally provided with arc-extinguishing stick（5）, extinguishing arc cylinder（6）And fusion tube（7）.
4. integration enclosed type expulsion fuse as described in claim 1, it is characterised in that：Under the fuse bodies
The outlet of portion side passes through copper conductor and lower electrode（8）Connection.
5. integration enclosed type expulsion fuse as described in claim 1, it is characterised in that：Mother casing（10）Pass through mother
Wiring connector connection integrated with distribution transformer.
6. integration enclosed type expulsion fuse as described in claim 1, it is characterised in that：Upper electrode（4）Using it is upper,
Lower both ends petal type structure of contact terminal.
7. integration enclosed type expulsion fuse as claimed in claim 6, it is characterised in that：The petal type structure of contact terminal
It is equipped with upper end petal contact（41）With lower end petal contact（42）.
8. integration enclosed type expulsion fuse as claimed in claim 1 or 2, it is characterised in that：Integrated casing（1）'s
Lower part terminals and upper electrode（4）The petal type contact of upper end connects, and passes through upper electrode（4）The petal contact of lower end with
Fusion tube（7）Upper end connection.
9. integration enclosed type expulsion fuse as claimed in claim 3, it is characterised in that：Fusion tube（7）Movable part
It is fixed by spring compression.
10. integration enclosed type expulsion fuse as claimed in claim 3, it is characterised in that：Arc-extinguishing stick（5）With extinguishing arc cylinder
（6）Between there are gaps.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810599740.XA CN108538689A (en) | 2018-06-12 | 2018-06-12 | A kind of integration enclosed type expulsion fuse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810599740.XA CN108538689A (en) | 2018-06-12 | 2018-06-12 | A kind of integration enclosed type expulsion fuse |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108538689A true CN108538689A (en) | 2018-09-14 |
Family
ID=63469882
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810599740.XA Withdrawn CN108538689A (en) | 2018-06-12 | 2018-06-12 | A kind of integration enclosed type expulsion fuse |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108538689A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109524281A (en) * | 2019-01-08 | 2019-03-26 | 北京博瑞莱智能科技周口有限公司 | A kind of compound insulation type fuse |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201601101U (en) * | 2009-12-12 | 2010-10-06 | 天水长城开关厂有限公司 | Insulated sealing device for high-voltage fuse casing |
| CN103700550A (en) * | 2013-12-10 | 2014-04-02 | 杭州国电电气设备有限公司 | Outdoor all-insulated jet fuse protector |
| CN106449331A (en) * | 2016-08-31 | 2017-02-22 | 合保电气（芜湖）有限公司 | Full-insulation closed-type load fuse |
| CN207251044U (en) * | 2017-04-18 | 2018-04-17 | 北京南瑞电研华源电力技术有限公司 | Become platform on a kind of closed integrated column |
| CN208538788U (en) * | 2018-06-12 | 2019-02-22 | 国家电网有限公司 | A kind of integration enclosed type expulsion fuse |
-
2018
- 2018-06-12 CN CN201810599740.XA patent/CN108538689A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201601101U (en) * | 2009-12-12 | 2010-10-06 | 天水长城开关厂有限公司 | Insulated sealing device for high-voltage fuse casing |
| CN103700550A (en) * | 2013-12-10 | 2014-04-02 | 杭州国电电气设备有限公司 | Outdoor all-insulated jet fuse protector |
| CN106449331A (en) * | 2016-08-31 | 2017-02-22 | 合保电气（芜湖）有限公司 | Full-insulation closed-type load fuse |
| CN207251044U (en) * | 2017-04-18 | 2018-04-17 | 北京南瑞电研华源电力技术有限公司 | Become platform on a kind of closed integrated column |
| CN208538788U (en) * | 2018-06-12 | 2019-02-22 | 国家电网有限公司 | A kind of integration enclosed type expulsion fuse |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109524281A (en) * | 2019-01-08 | 2019-03-26 | 北京博瑞莱智能科技周口有限公司 | A kind of compound insulation type fuse |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180914 |