CN103545154B - Fuse - Google Patents
Fuse Download PDFInfo
- Publication number
- CN103545154B CN103545154B CN201310538197.XA CN201310538197A CN103545154B CN 103545154 B CN103545154 B CN 103545154B CN 201310538197 A CN201310538197 A CN 201310538197A CN 103545154 B CN103545154 B CN 103545154B
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- Prior art keywords
- fuse
- insulating ceramic
- plug
- shutoff
- seal plug
- Prior art date
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- 239000000919 ceramic Substances 0.000 claims abstract description 75
- 238000009413 insulation Methods 0.000 claims abstract description 13
- 230000004927 fusion Effects 0.000 claims description 24
- 239000000463 material Substances 0.000 claims description 14
- 238000007789 sealing Methods 0.000 claims description 11
- 229920000742 Cotton Polymers 0.000 claims description 4
- 150000003839 salts Chemical class 0.000 description 6
- 238000009434 installation Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 3
- 238000007493 shaping process Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000010891 electric arc Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000003373 anti-fouling effect Effects 0.000 description 1
- 230000008033 biological extinction Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000002277 temperature effect Effects 0.000 description 1
Landscapes
- Fuses (AREA)
Abstract
The invention provides a kind of fuse, cartridge fuse is arranged at the inside of insulating ceramic, the upper contact electrode that connect corresponding to cartridge fuse and lower contact electrode are located at top and the bottom of insulating ceramic respectively, the two is connected respectively inlet line and egress line, inlet line and egress line draw the outside in insulating ceramic, the exit of the two arranges seal plug and lower seal plug respectively, and upper seal plug and lower seal plug are respectively by inlet line and egress line insulation parcel, in the circuit place in circuit of outlet, form circuit after cartridge fuse fuses in insulating ceramic to cut-off, excision faulty section circuit or faulty equipment, the inlet line of fuse and the insulation package structure of outlet line end are set, by the Each part insulated enclosure of fuse in the inside of insulating ceramic, improve insulating protection performance.
Description
Technical field
The present invention relates to controller switching equipment technical field, more particularly, relate to a kind of fuse.
Background technology
Fuse refers to when electric current exceedes setting, with the heat that itself produces, melt is fused, a kind of electrical equipment of open circuit.
The fuse that current domestic overhead distribution uses is based on drop type, and belong to non-enclosed equipment, contact is exposed, in use there is numerous defect, is an insoluble problem in circuit insulating process always.
There is following defect in existing fuse, because the charged position such as dynamic/static contact, splicing ear is all in naked state, the overlap joint electric discharge of the foreign matters such as easy generation branch, iron wire, toy, especially when raining the awful weather of to blow etc., short circuit or ground fault happen occasionally, and become the weak link of insulated circuit.Even if install insulation protective hood additional, owing to easily accumulating dirt, also easily cause leakage of current, cause insulating cover pyrophoricity accident, and contaminated part not easy cleaning on protective cover.
Fuse antifouling property and salt resistant character poor, easily causes salt dirty for coastal area, insulator surface also can be caused to produce leakage current, and anchor ear is comparatively near apart from upper and lower contact, adds the probability of pollution flashover accident.
Fuse is owing to exposing contact easily by corrosion, and cause electric conductivity decline and temperature rise occurs, cause ageing of electrode, touch spring piece performance declines, and causes contact burning or fusion tube automatically to fall.After fusion tube rotation axis pollutes in addition, after also there is melt fusing, fusion tube can not fall rapidly, cannot fusion tube be caused to burn or the accident such as blast by fast arc extinction.
Finally, the fitting operation of fuse has a big risk, and requires high to operator, can not operate at the bad weather such as wind, rain, adds installation degree of difficulty.
Therefore, how improving the insulating properties of fuse, is current those skilled in the art's problem demanding prompt solution.
Summary of the invention
In view of this, the invention provides a kind of fuse, to realize the insulating properties improving fuse.
In order to achieve the above object, the invention provides following technical scheme:
A kind of fuse, comprise insulating ceramic and be arranged at the cartridge fuse in the axial bore of described insulating ceramic, top and the bottom of described insulating ceramic are respectively arranged with the inlet line and egress line that are communicated with lower contact electrode with the upper contact electrode of described insulating ceramic, described insulating ceramic are provided with to its top and sealed bottom and by the upper seal plug of the termination of the termination of described inlet line and described egress line insulation parcel and lower seal plug.
Preferably, in above-mentioned fuse, described egress line is drawn by the bottom sidewall of described insulating ceramic, and the bottom of the through described insulating ceramic of inner chamber of described insulating ceramic, the bottom of described insulating ceramic is provided with the sealed bottom plug to its intracavity bottom shutoff.
Preferably, in above-mentioned fuse, described sealed bottom plug comprises and stretching in described inner chamber and the shutoff plug of hollow and described shutoff is filled in the blanking cover of row shutoff, and the top of described shutoff plug is provided with the supported hole supported the bottom outer-edge of described cartridge fuse.
Preferably, in above-mentioned fuse, described upper seal plug is the integrated sealing plug of quality of rubber materials, and described inlet line is wrapped in the inside of described upper seal plug.
Preferably, in above-mentioned fuse, described lower seal plug is the integrated sealing plug of quality of rubber materials, and described egress line is wrapped in the inside of described lower seal plug.
Preferably, in above-mentioned fuse, described sealed bottom plug is sealed bottom plug prepared by quality of rubber materials.
Preferably, in above-mentioned fuse, the top card of described upper contact electrode and described cartridge fuse is hinged with joins, and the surface of described upper contact electrode is provided with silver-plated overcoat.
Preferably, in above-mentioned fuse, described blanking cover is provided with between institute shutoff plug the blanking cover cotton rope be connected the two.
Preferably, in above-mentioned fuse, the middle part of described insulating ceramic installs fixing anchor ear around being provided with for carrying out fuse.
Preferably, in above-mentioned fuse, described cartridge fuse comprises fusion tube, lower fusion tube and setting and tubulose melt therebetween, be arranged with the Compress Spring offseted with described upper fusion tube and lower fusion tube respectively outside described tubulose melt, be provided with in described tubulose melt, by described upper fusion tube and lower fusion tube, fixing fuse be installed.
Fuse provided by the invention, comprise insulating ceramic and be arranged at the cartridge fuse in the axial bore of insulating ceramic, top and the bottom of insulating ceramic are respectively arranged with the inlet line and egress line that are communicated with lower contact electrode with the upper contact electrode of insulating ceramic, insulating ceramic are provided with to its top and sealed bottom and by the upper seal plug of the termination of the termination of inlet line and egress line insulation parcel and lower seal plug.
Cartridge fuse is arranged at the inside of insulating ceramic, the upper contact electrode that connect corresponding to cartridge fuse and lower contact electrode are located at top and the bottom of insulating ceramic respectively, the two is connected respectively inlet line and egress line, inlet line and egress line draw the outside in insulating ceramic, the exit of the two arranges seal plug and lower seal plug respectively, and upper seal plug and lower seal plug are respectively by inlet line and egress line insulation parcel, in the circuit place in circuit of outlet, by by the Each part insulated enclosure of fuse in the inside of insulating ceramic, form circuit after cartridge fuse fuses in insulating ceramic to cut-off, excision faulty section circuit or faulty equipment, reach the object of proterctive equipment.
The inlet line of fuse and the insulation package structure of outlet line end are set, improve insulating protection performance, and, the safeguard structure of sealing, the area adapting to the bad environments such as or dust storm seriously dirty at salt uses, and the dirty performance of salt tolerant has the above level of salinity adhesion amount 0.35mg/cm2 of equal value, improves life of product, reduce equipment failure rate and plant maintenance workload, improve line insulation level.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The internal structure cutaway view of the fuse that Fig. 1 provides for this case.
Embodiment
The invention discloses a kind of fuse, improve the insulating properties of fuse.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, carry out clear, complete description to the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on embodiments of the invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
As shown in Figure 1, the internal structure cutaway view of fuse that provides for this case of Fig. 1.
Fuse provided by the invention, the cartridge fuse 3 comprising insulating ceramic 1 and be arranged in the axial bore 2 of insulating ceramic 1, top and the bottom of insulating ceramic 1 are respectively arranged with the inlet line 6 and egress line 7 that are communicated with lower contact electrode 5 with the upper contact electrode 4 of insulating ceramic 1, insulating ceramic 1 are provided with to its top and sealed bottom and by the upper seal plug 8 of the termination of the termination of inlet line 6 and egress line 7 insulation parcel and lower seal plug 9.
Cartridge fuse 3 is arranged at the inside of insulating ceramic 1, the upper contact electrode 4 that connect corresponding to cartridge fuse 3 and lower contact electrode 5 are located at top and the bottom of insulating ceramic 1 respectively, the two is connected respectively inlet line 6 and egress line 7, inlet line 6 and egress line 7 draw the outside in insulating ceramic 1, the exit of the two arranges seal plug 8 and lower seal plug 9 respectively, the parcel and inlet line 6 and egress line 7 insulate by upper seal plug 8 and lower seal plug 9 respectively, in the circuit place in circuit of outlet, by by the Each part insulated enclosure of fuse in the inside of insulating ceramic 1, form circuit after cartridge fuse 3 fuses in insulating ceramic 1 to cut-off, excision faulty section circuit or faulty equipment, reach the object of proterctive equipment.
The inlet line 6 of fuse and the insulation package structure of egress line 7 are set, improve its insulating protection performance, and, the safeguard structure of sealing, the area adapting to the bad environments such as or dust storm seriously dirty at salt uses, and the dirty performance of salt tolerant has the above level of salinity adhesion amount 0.35mg/cm2 of equal value, improves life of product, reduce equipment failure rate and plant maintenance workload, improve line insulation level.
In the present invention one specific embodiment, egress line 7 is drawn by the bottom sidewall of insulating ceramic 1, and the bottom of the through insulating ceramic 1 of inner chamber of insulating ceramic 1, the bottom of insulating ceramic 1 is provided with the sealed bottom plug to its intracavity bottom shutoff.The egress line 7 be connected with cartridge fuse 3 bottom is drawn by the sidewall of insulating ceramic 1, thus the bottom space of insulating ceramic 1 is discharged, the inner chamber of insulating ceramic 1 is through to bottom it, by the bottom inner-cavity structure of the insulating ceramic 1 of release, provide space cartridge fuse 3 being fit into position by the bottom of insulating ceramic 1.Sealed bottom plug intracavity bottom being carried out to shutoff is provided with in the bottom of insulating ceramic 1, by sealed bottom plug by the inner space of insulating ceramic 1 and external isolation, keep the sealing of insulating ceramic inner space, the application of fuse under the adverse circumstances that conform.
Particularly, sealed bottom plug comprises and stretching in inner chamber 2 and the shutoff plug 10 of hollow and shutoff plug 10 is carried out to the blanking cover 11 of shutoff, and the top of shutoff plug 10 is provided with the supported hole 12 supported the bottom outer-edge of cartridge fuse 3.Cartridge fuse 3 is mounted in the inner chamber 2 of insulating ceramic 1, its top clamps location by upper contact electrode 4, after cartridge fuse 3 fuses, upper and lower two parts separately, by arranging the shutoff plug 10 stretched in inner chamber 2, be provided with the supported hole 12 that the bottom margin of cartridge fuse 3 is supported by the top of shutoff plug 10, ensure the stability of cartridge fuse 3 mounting structure in insulating ceramic 1 inner chamber 2.For the sealing avoiding fuse inner in the work environment, shutoff is carried out by blanking cover 11 pairs of shutoff plugs 10, shutoff plug 11 is the shell structure of hollow, fit tightly with the inner chamber 2 chamber wall of insulating ceramic 1, shutoff is carried out by the bottom of shutoff plug 10 pairs of insulating ceramics 1, by arranging blanking cover 11, carry out shutoff by the bottom of blanking cover 11 pairs of shutoff plugs 10, insulating ceramic 1 and external environment condition are carried out seal isolation.Inner chamber 2 is the flaring structure that volume becomes large gradually near the base section of insulating ceramic 1, flaring structure is easy to cartridge fuse 3 has the bottom of insulating ceramic 1 to load, mounting structure is simple, arranges sealed bottom plug simultaneously, is also easy to the hermetically-sealed construction stability realized bottom insulating ceramic.
In the present invention one specific embodiment, upper seal plug 8 is the integrated sealing plug of quality of rubber materials, and inlet line 6 is wrapped in the inside of seal plug 8.
Particularly, lower seal plug 9 is the integrated sealing plug of quality of rubber materials, and egress line 7 is wrapped in the inside of lower seal plug 9.Sealed bottom plug is sealed bottom plug prepared by quality of rubber materials.
The top of insulating ceramic 1 is inlet line extraction channel, bottom sidewall is egress line extraction channel, the direct through connection bottom of inner chamber 2 of insulating ceramic 1, for ensureing the sealing after insulating ceramic 1 assembling, need well to seal the position of three and ft connection, the stopper structure of quality of rubber materials is easily shaping, and hermetically-sealed construction that is shaping and insulating ceramic 1 aperture position structure snug fit can be realized, and quality of rubber materials has good insulation property, and form good package structure with inlet line 6 and egress line 7, realize the installation needs of fuse.Particularly, sealed bottom plug comprises shutoff plug 10 and blanking cover 11 two parts, shutoff plug 10 can be prepared into the shaping shutoff plug of quality of rubber materials, realization fits tightly with insulating ceramic 1 bottom lumen side wall, in the process of installing cartridge fuse 3, be also easy to realize cartridge fuse 3 to be installed in inner chamber 2 through supported hole 12.Blanking cover 11 is prepared by quality of rubber materials equally, when carrying out shutoff by blanking cover 11, can ensure fitting tightly between blanking cover 11 and shutoff plug 10.
In the present invention one specific embodiment, upper contact electrode 4 is hinged with the top card of cartridge fuse 3 joins, and the surface of upper contact electrode 4 is provided with silver-plated overcoat.Cartridge fuse 3 is installed to after in insulating ceramic 1, the top of cartridge fuse 3 is by upper contact electrode 4 snap fit, by arranging silver-plated overcoat to the surface of upper contact electrode 4, when silver-plated overcoat can ensure that cartridge fuse 3 disconnects, the mechanical stability of cartridge fuse 3 installation site, and more big current can be born, not easily scaling loss.
In the present invention one specific embodiment, between blanking cover 11 with shutoff plug 10, be provided with the blanking cover cotton rope that the two is connected.By cotton rope, shutoff plug 10 is connected with blanking cover 11, by blanking cover 11 by after taking out in shutoff plug 10, avoid losss that drop of blanking cover 11, be easy to realization to the maintenance of fuse, the work such as replacing checking or complete electric component.
In the present invention one specific embodiment, the middle part of insulating ceramic 1 installs fixing anchor ear around being provided with for carrying out fuse.Anchor ear comprise the insulating ceramic 1 of fuse is held tightly clamp portion, clamp the affixed cantilever arm in portion with this, be fixed in electric equipment by cantilever arm by fuse, the installation realized in insulating ceramic electric equipment is fixed.
In the present invention one specific embodiment, cartridge fuse 3 comprises fusion tube 31, lower fusion tube 32 and setting and tubulose melt 33 therebetween, be arranged with the Compress Spring 34 offseted with upper fusion tube 31 and lower fusion tube 32 respectively outside tubulose melt 33, be provided with in tubulose melt 33, by upper fusion tube 31 and lower fusion tube 32, fixing fuse be installed.Utilize fuse self to fuse and form electric arc, then under high arc temperature effect, special material gasification in tubulose melt 33 is produced a large amount of gas, this gas is relied on to be blown out by electric arc when current over-zero again, disconnect after cartridge fuse 3 gasifies, the pressure effect of being put aside by Compress Spring 34 is by the movable part of cartridge fuse 3, namely the lower fusion tube 32 after cartridge fuse 3 disconnection, release by shutoff plug 10, lower fusion tube 32 is pushed out outside the insulating ceramic 1 of fuse, thus make to form electric fracture between inlet line 6 and egress line 7, to cut-off circuit excision faulty section circuit or faulty equipment.
In this specification, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually see.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (8)
1. a fuse, it is characterized in that, comprise insulating ceramic (1) and be arranged at the cartridge fuse (3) in the axial bore (2) of described insulating ceramic (1), top and the bottom of described insulating ceramic (1) are respectively arranged with the inlet line (6) and egress line (7) that are communicated with lower contact electrode (5) with the upper contact electrode (4) of described insulating ceramic (1), described insulating ceramic (1) to be provided with to its top and sealed bottom and by the upper seal plug (8) of the termination of the termination of described inlet line (6) and described egress line (7) insulation parcel and lower seal plug (9), described egress line (7) is drawn by the bottom sidewall of described insulating ceramic (1), the bottom of the through described insulating ceramic (1) of inner chamber of described insulating ceramic (1), the bottom of described insulating ceramic (1) is provided with the sealed bottom plug to its inner chamber (2) bottom shutoff, described sealed bottom plug comprises and stretching in described inner chamber (2) and the shutoff plug (10) of hollow and described shutoff plug (10) is carried out to the blanking cover (11) of shutoff, the top of described shutoff plug (10) is provided with the supported hole (12) supported the bottom outer-edge of described cartridge fuse (3).
2. fuse according to claim 1, is characterized in that, the integrated sealing plug that described upper seal plug (8) is quality of rubber materials, and described inlet line (6) is wrapped in the inside of described upper seal plug (8).
3. fuse according to claim 1, is characterized in that, the integrated sealing plug that described lower seal plug (9) is quality of rubber materials, and described egress line (7) is wrapped in the inside of described lower seal plug (9).
4. fuse according to claim 1, is characterized in that, described sealed bottom plug is sealed bottom plug prepared by quality of rubber materials.
5. fuse according to claim 1, is characterized in that, described upper contact electrode (4) is hinged with the top card of described cartridge fuse (3) joins, and the surface of described upper contact electrode (4) is provided with silver-plated overcoat.
6. fuse according to claim 1, is characterized in that, is provided with the blanking cover cotton rope be connected the two between described blanking cover (11) with institute's shutoff plug (10).
7. fuse according to claim 1, is characterized in that, the middle part of described insulating ceramic (1) installs fixing anchor ear around being provided with for carrying out fuse.
8. fuse according to claim 1, it is characterized in that, the tubulose melt (33) that described cartridge fuse (3) comprises fusion tube (31), lower fusion tube (32) and is arranged at therebetween, be arranged with the Compress Spring (34) offseted with described upper fusion tube (31) and lower fusion tube (32) respectively outside described tubulose melt (33), be provided with in described tubulose melt (33), by described upper fusion tube (31) and lower fusion tube (32), fixing fuse be installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310538197.XA CN103545154B (en) | 2013-11-04 | 2013-11-04 | Fuse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310538197.XA CN103545154B (en) | 2013-11-04 | 2013-11-04 | Fuse |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103545154A CN103545154A (en) | 2014-01-29 |
| CN103545154B true CN103545154B (en) | 2015-10-21 |
Family
ID=49968516
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310538197.XA Active CN103545154B (en) | 2013-11-04 | 2013-11-04 | Fuse |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103545154B (en) |
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| CN105225904A (en) * | 2015-11-05 | 2016-01-06 | 国家电网公司 | A kind of fuse |
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| CN107633985A (en) * | 2016-07-19 | 2018-01-26 | 郑州瑞能电气有限公司 | Novel outdoor high-voltage fuse |
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| CN106206203A (en) * | 2016-08-24 | 2016-12-07 | 辽宁华隆电力科技股份有限公司 | A kind of injection fuse box with closure recess |
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| CN106206202A (en) * | 2016-08-24 | 2016-12-07 | 铁岭市世纪电力设备有限公司 | Injection fuse box is locked in one |
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| CN106128901A (en) * | 2016-08-24 | 2016-11-16 | 辽宁华隆电力科技股份有限公司 | A kind of two-part insulating ceramic and upper locking injection fuse box |
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| CN106128895A (en) * | 2016-08-24 | 2016-11-16 | 辽宁华隆电力科技股份有限公司 | Lead-out wire two-part insulating ceramic injection fuse box in a kind of major diameter |
| CN106128889A (en) * | 2016-08-24 | 2016-11-16 | 辽宁华隆电力科技股份有限公司 | A kind of two-part insulating ceramic injection fuse box of cartridge fuse peripheral hardware insulating barrier |
| CN106098492A (en) * | 2016-08-24 | 2016-11-09 | 辽宁华隆电力科技股份有限公司 | A kind of U-shaped conducting ring and upper locking injection fuse box |
| CN106128898A (en) * | 2016-08-24 | 2016-11-16 | 辽宁华隆电力科技股份有限公司 | Lead-out wire injection fuse box in a kind of major diameter |
| 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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| CN103346049A (en) * | 2013-07-08 | 2013-10-09 | 桐乡市供电局 | Full-sealing fuse |
| CN203521347U (en) * | 2013-11-04 | 2014-04-02 | 国家电网公司 | Fuse |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5559488A (en) * | 1992-09-17 | 1996-09-24 | Cooper Industries, Inc. | Current limiting fuse having compact structure |
| CN2901565Y (en) * | 2006-05-26 | 2007-05-16 | 马辉 | Closed high voltage fuse |
| CN201112314Y (en) * | 2007-05-09 | 2008-09-10 | 日本能源服务株式会社 | High voltage fuse |
| CN102779705A (en) * | 2012-08-06 | 2012-11-14 | 象山县供电局 | Fuse |
| CN103346049A (en) * | 2013-07-08 | 2013-10-09 | 桐乡市供电局 | Full-sealing fuse |
| CN203521347U (en) * | 2013-11-04 | 2014-04-02 | 国家电网公司 | Fuse |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103545154A (en) | 2014-01-29 |
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