CN101206933B - Meltable electric wire - Google Patents
Meltable electric wire Download PDFInfo
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- CN101206933B CN101206933B CN2007101127762A CN200710112776A CN101206933B CN 101206933 B CN101206933 B CN 101206933B CN 2007101127762 A CN2007101127762 A CN 2007101127762A CN 200710112776 A CN200710112776 A CN 200710112776A CN 101206933 B CN101206933 B CN 101206933B
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- circuit
- meltable electric
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Abstract
The invention provides a novel fusible electric wire, the conductor of which adopts a complex conductor, the complex conductor is the complex of copper and other fusible conductors, the fusible conductors are arranged in the middle, a copper wire or tinned copper wire is intertwisted, thereby causing the fusible electric wire not only to have short circuit protection function, but also to have overload protection function. Moreover, an isolating layer made of mica paper or glass fiber material is arranged between a conductor and an insulating layer, thereby causing the fusible electric wire to be provided with outstanding flame retardant and fire proof performance.
Description
Technical field
The present invention relates to a kind of meltable electric wire, be specially adapted to automobile and use.
Background technology
Show that according to national authority department statistics data China's vehicle failure about 40% occurs in circuit part.Because the automobile circuit design is not good enough, the fire incident that short circuit causes happens occasionally, because of short circuit causes the phenomenon of casting anchor in the automobile way of common occurrence.
Single for preventing that electrical system from damaging because of short circuit or overload.Independently be connected to fuse respectively in the circuit at each and can not protect car load electrical equipment installation security.In fact; be not short-circuited at power consumption equipment itself; and when the leading portion circuit of Fuse wire box pushes or cuts because of accident; circuit layout will cause fire because of the short circuit heating; we are necessary that the popularization and application meltable electric wire carries out short circuit (5s) protection fast in the main circuit of electrical system or a circuit, guarantee traffic safety.
Abroad, meltable electric wire in automobile circuit to be applied in the beginning of the seventies just quite universal.Japanese car industry spells out " short-circuit protection of line system " in JASOD610-75 " automobile with fusible link and meltable electric wire and circuit thereof " standard be exactly the purpose of bringing into play the effect of meltable electric wire and using meltable electric wire.In more important circuit, can lay two pipe protections, meltable electric wire is the 1st road, fuse or circuit breaker are the 2nd road, with the be laid in position of more convenient dismounting of meltable electric wire, allow electric current earlier by meltable electric wire, again by fuse or circuit breaker.When overload took place circuit, meltable electric wire is fusing earlier, thereby protected circuit, has also protected not easily detachable fuse or circuit breaker.
Meltable electric wire is made of conductor and insulating barrier, and conductor generally adopts copper cash or tinned wird, and insulating barrier adopts chlorosulfonated polyethylene, and its length is 50-200mm.The resistance of meltable electric wire unit length should be higher than other cables in the circuit, usually than little two wire sizes of protected cable.Meltable electric wire generally also should have tangible sign, and after its fusing, its sign must exist so that change.
Because meltable electric wire adopts copper cash or tinned wird, is subjected to the restriction (fusion temperature of copper is 1083 ℃) of the fusion temperature of copper, the fusing time of meltable electric wire is in 5s.Therefore, generator can only play generator armature line bonding or the short circuit of generator own to the meltable electric wire that is provided with between storage battery (200A), and when 5s clock internal short-circuit electric current surpasses 300A, just can make meltable electric wire fusing,, in case the generator overload supposes only to surpass 60A, meltable electric wire but can not fuse, cause generator overheated for a long time, premature damage causes the storage battery overcharge, shortens storage battery useful life.
Summary of the invention
The invention provides a kind of novel meltable electric wire; further reduce the fusing time of meltable electric wire, can implement protection, also can implement protection the overload of circuit to the short circuit of circuit; it adopts the combination metal to make conductor, can also be surrounded by separator in addition between conductor and insulating barrier.
Meltable electric wire of the present invention, its combined conductor adopt the combining form of copper and other meltable conductor, are meltable conductor in the middle of generally being, twisted copper wires or tinned wird on every side, and the fusion temperature of meltable conductor is lower than copper.For copper cash or tinned wird, be meltable conductor on every side in the middle of also can being.
Separator can adopt general PP film band or cable paper, also can adopt mica paper or glass fiber material.Adopt separator, can further improve the insulation property of meltable cable, also help the separation of insulating barrier, particularly adopted mica paper or glass fiber material, further improved the fire-retardant fireproof performance of meltable electric wire.
Description of drawings
Fig. 1 meltable electric wire of the present invention.
The layout plan of Fig. 2 meltable electric wire of the present invention in automobile line.
Wherein, 1, conductor, 2, separator; 3, insulating barrier.
Embodiment
Meltable electric wire as shown in Figure 1 is to be applicable to that nominal area of section is 3.0-5.0mm
2Return wire use, the nominal area of section of meltable electric wire is 1.5mm
2
Stranded the forming of metal single line that conductor 1 adopts 19 0.32mm, the centre is 7 fusible metal lines, the fusible metal line is fusion temperature round aluminum steel or the aluminium alloy wire lower than copper cash, and the outside is stranded again 12 tin-coated copper single lines, before insulating barrier is extruded, utilize the banded mica paper of the wrapped one deck of wrapped machine as separator 2, the thickness of mica paper tape is 0.03-0.05mm, and mica paper tape is 1/2 to 1/3 to put up, and uses extruder then, extrude a layer insulating 3, the thickness of insulating barrier 3 is 1.2mm.
Meltable electric wire is detected, and the tensile strength of insulation is greater than 10.0MPa, and elongation at break is greater than 250%.Meltable electric wire soaks 20h in 50 ℃ oil, crooked then, soak withstand voltage 1000V, 1min do not puncture.Meltable electric wire carries out heat ageing under 120 ℃ of 168h conditions, crooked then, soak withstand voltage 1000V, 1min do not puncture.Meltable electric wire-45 ℃ through 3h, low temperature is reeled, and decontrols again, after the taking-up, soak withstand voltage 1000V, 1min do not puncture.
Contrast the meltable electric wire of same conductor nominal area of section, adopt combined conductor than the simple copper cash that adopts, the fusing time during 300A reduces more than 20%.The simple meltable electric wire that adopts copper cash is when electric current is 60A, and meltable electric wire is fusing not, and adopts the meltable electric wire of combined conductor to fuse in 3h.
Combined conductor of the present invention, middle and not only be confined to aluminum steel or aluminium alloy wire, can also adopt fusion temperature to be lower than silver, lead, the tin of copper or their alloy.
Meltable electric wire of the present invention; owing to adopt combined conductor, copper cash wherein makes meltable electric wire keep the favorable mechanical performance, and meltable conductor has wherein reduced the fusing time of meltable electric wire; make meltable electric wire not only can play the short-circuit protection effect, can also play overload protective function.Owing to adopted separator, oil resistance and fire-retardant fireproof performance are improved simultaneously, are more suitable in the route protection in fields such as automobile.
Claims (3)
1. a meltable electric wire comprises the insulating barrier that conductor and conductor are outer, and it is characterized in that: conductor is a combined conductor, adopts the combination of copper and meltable conductor, and wherein the centre of combined conductor is meltable conductor, is stranded copper cash or tinned wird on every side; Wherein meltable conductor is silver, lead, tin or their alloy.
2. meltable electric wire as claimed in claim 1 is characterized in that: also have separator between described conductor and described insulating barrier.
3. meltable electric wire as claimed in claim 2 is characterized in that: described separator is mica tape lapping layer or fiberglass cloth tape lapping layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101127762A CN101206933B (en) | 2007-06-17 | 2007-06-17 | Meltable electric wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101127762A CN101206933B (en) | 2007-06-17 | 2007-06-17 | Meltable electric wire |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101206933A CN101206933A (en) | 2008-06-25 |
| CN101206933B true CN101206933B (en) | 2010-10-20 |
Family
ID=39567024
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007101127762A Active CN101206933B (en) | 2007-06-17 | 2007-06-17 | Meltable electric wire |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101206933B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107240457A (en) * | 2017-05-19 | 2017-10-10 | 江苏海迅实业集团股份有限公司 | A kind of electric wire |
| CN108428535B (en) * | 2018-02-28 | 2019-10-08 | 华中科技大学 | A kind of twisted core spiral line type inductor |
| CN110592420B (en) * | 2019-10-23 | 2021-08-13 | 常州恒丰特导股份有限公司 | Tin-plated silver-copper alloy fuse wire for high-breaking glass fuse and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2817002Y (en) * | 2005-08-05 | 2006-09-13 | 江苏江扬电缆有限公司 | Fire-retardant cable |
| CN2906841Y (en) * | 2006-06-08 | 2007-05-30 | 江苏远东集团有限公司 | Copper-aluminum composite conductor cable |
-
2007
- 2007-06-17 CN CN2007101127762A patent/CN101206933B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2817002Y (en) * | 2005-08-05 | 2006-09-13 | 江苏江扬电缆有限公司 | Fire-retardant cable |
| CN2906841Y (en) * | 2006-06-08 | 2007-05-30 | 江苏远东集团有限公司 | Copper-aluminum composite conductor cable |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101206933A (en) | 2008-06-25 |
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