CN202443780U - Moisture-resistant halogen-free low-smoke flame-retardant polyolefin insulation pair twist type flexible cable - Google Patents
Moisture-resistant halogen-free low-smoke flame-retardant polyolefin insulation pair twist type flexible cable Download PDFInfo
- Publication number
- CN202443780U CN202443780U CN2011205671095U CN201120567109U CN202443780U CN 202443780 U CN202443780 U CN 202443780U CN 2011205671095 U CN2011205671095 U CN 2011205671095U CN 201120567109 U CN201120567109 U CN 201120567109U CN 202443780 U CN202443780 U CN 202443780U
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- cable
- flexible cable
- conductor
- flame
- halogen
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
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Abstract
The present utility model relates to a moisture-resistant halogen-free low-smoke flame-retardant polyolefin insulation pair twist type flexible cable. The flexible cable comprises a conductor, a high-molecular wrapping tape and an insulation layer, the cable is characterized in that a wrapping layer is added between the insulation layer and the conductor, the wrapping layer is made of the high-molecular wrapping tape, thus the insulation performance of the flexible cable under the moisture environment can be satisfied. The flexible cable is excellent in bending performance and halogen-free, low-smoke and flame-retardant characteristics, and is safe in use and suitable for a moisture environment. A withstand voltage test of soaking an insulation cable core in water for 20 days shows that the cable can endure 2kV for 5 minutes continuously without being punctured. a test pH value prescribed by GB/T17650 and endured by the halogen-free characteristic is not less than 4.3, and the conductivity is larger than 10uS/mm. The light transmittance is not less than 60% in a smoke density test. The flame-retardant performance should pass a flame-retardant test prescribed by GB/T18380.
Description
Technical field
The utility model relates to a kind of humidity halogen-free and low-smoke flame-retardant polyolefin insulation pair twist type flexible cable.Belong to field of cables.
Background technology
Traditional polyvinyl chloride insulation pair twist type flexible cable is mainly used in the occasion of household electrical appliance, instrument and meter and power and lighting; Because present stage, building trade was for the tight demand of cable LSOH anti-flaming performance; Again seeing that the wet environment in the Sichuan Basin; The situation that insulation resistance does not reach requirement will appear in a period of time after general low smoke, zero halogen polyolefin insulation flexible cable was installed; Crowded double hyer insulation not only increases production cost, operation, also possibly cause external diameter excessive, does not satisfy the standard-required of Machinery Ministry.
How on the basis of existing plastic extruder; Develop a kind of new halogen-free and low-smoke flame-retardant polyolefin insulation pair twist type flexible cable; Can be applied to concrete wet environment occasion, existing mechanical ministerial standard cable is improved, neither increase the generation technology difficulty; Only production costs that increase, this is the problem that those skilled in the art thirsts for solving more.
The utility model content
The purpose of the utility model is to provide a kind of humidity halogen-free and low-smoke flame-retardant polyolefin insulation pair twist type flexible cable.
Because the use occasion of the halogen-free and low-smoke flame-retardant polyolefin that the utility model provides insulation pair twist type flexible cable needs cable to have the characteristic of LSOH anti-flaming, need under the environment of humidity, have enough insulation resistances again.So the utility model is set about from material and structure, selecting halogen-free and low-smoke flame-retardant polyolefin material and a kind of macromolecule for use is the lapping layer band, and through discovery that the material of finished cable and structure are made an experiment, described cable has following premium properties:
1, have good LSOH anti-flaming characteristic, common cable does not have flame-retarding characteristic.
2, under the wet environment condition, still have the insulation resistance of Machinery Ministry standard-required, demonstrate the characteristic of humidity.
In order to guarantee that humidity halogen-free and low-smoke flame-retardant polyolefin insulated cable has above advantage, the utility model improves cable from following aspect:
1, conductor: conductor adopts the oxygen-free copper of high-quality, and the purity of copper reaches 99.95～99.99%.Conductor adopts zinc-plated or tin-coated copper conductor not according to the requirement of using, and conductor adopts the requirement of the 5th kind or the 6th kind conductor regulation that meets the IEC60228 regulation.Conductive surface should bright and clean, no greasy dirt, the burr of not damaged insulation, and single line protruding or fracture.The external diameter of conductor is no more than 1.0-1.2mm.
2, lapping layer: between conductor and insulating barrier, add lapping layer, what lapping layer used is the macromolecule band, contains strong hydrophobic group, and the breakdown strength of its power frequency is greater than 100kV/mm, and insulation resistance is greater than 1 * 10
10Ω m.Lapping layer thickness 0.04-0.06mm, double-deck lapping layer thickness is 0.2mm.
3, insulating barrier: insulating barrier adopts the halogen-free and low-smoke flame-retardant polyolefin material, and it extrudes thickness and performance all satisfies the regulation of stipulating among the JB/T 10491-2004 that is applicable to 300/500V and following voltage withstand class cable.
The utility model adds lapping layer between insulating barrier and conductor, what lapping layer used is the macromolecule band.Add the use of LSOH anti-flaming material; Not only make cable under wet environment, satisfy the insulation resistance performance; And do not have too much increase operation and cost, the more important thing is only to have increased the outside diameter of cable slightly that described flexible cable external diameter is generally 5.2-5.6mm and is no more than 5.4-5.8mm; Make the outside diameter of cable meet the requirement of JB8734.3-1998 standard, that is outside dimension is less than standard mean outside diameter higher limit.According to standard mean outside diameter higher limit is 6.0-6.3mnm.Guarantee the LSOH anti-flaming characteristic of product, installing and using under bending property and the wet environment.
The characteristic of the humidity cross-linked polyolefin insulated cable that the utility model provides is:
1, immersion is after 20 days, and cable voltage is tested: stand to exchange 2kV, continue 5 minutes, do not puncture.
2, cable LSOH anti-flaming test:
A, its fire resistance of LSOH anti-flaming type cable should be passed through the fire retardancy test of GB/T18380.3 regulation.
B, its low smoke performance of LSOH anti-flaming type cable should stand the smoke density test of GB/T17651 regulation, and light transmittance should be not less than 60%.
C, its Halogen characteristic of LSOH anti-flaming type cable should stand the test of GB/T17650.2 regulation, pH value>=4.3, conductivity≤10 μ S/mm.
Description of drawings
The structural representation of the insulated cable that Fig. 1 provides for the utility model;
Among the figure, 1 is flexible conductor, 2 lapping layers, and 3 is insulating barrier.
Embodiment
Humidity cross-linked polyolefin insulation pair twist type flexible cable is a coated again insulating barrier 3 behind the wrapped macromolecule band outside flexible conductor 1.Last pair twist is accomplished the described flexible cable of the utility model.The external diameter of flexible cable is 5.4-5.5mm, and lapping layer thickness is 0.05mm, and conductor diameter is 1.0-1.2mm.
Claims (9)
1. a humidity halogen-free and low-smoke flame-retardant polyolefin insulation pair twist type flexible cable is characterized in that described cable is between conductor and insulating barrier, to add lapping layer, and the outside diameter of cable meets JB 8734.3-1998 regulation.
2. by the described flexible cable of claim 1, it is characterized in that described conductor adopts the conductor of the 5th kind or the 6th kind regulation that meets the IEC60228 regulation.
3. by claim 1 or 2 described flexible cables, it is characterized in that described conductor is zinc-plated or tin-coated copper conductor not.
4. by the described flexible cable of claim 1, it is characterized in that described thickness of insulating layer meets the 300/500V that stipulates among the JB/T10491-2004 and the thickness of following voltage withstand class cable.
5. by claim 1 or 2 described flexible cables, it is characterized in that described conductor diameter is 1.0-1.2mm.
6. by the described flexible cable of claim 3, it is characterized in that described conductor diameter is 1.0-1.2mm.
7. by the described flexible cable of claim 1, the external diameter that it is characterized in that described cable is 5.2-5.6mm.
8. by the described flexible cable of claim 1, it is characterized in that lapping layer thickness is 0.04-0.06mm.
9. by claim 1 or 8 described flexible cables, the thickness that it is characterized in that double-deck lapping layer is 0.2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205671095U CN202443780U (en) | 2011-12-29 | 2011-12-29 | Moisture-resistant halogen-free low-smoke flame-retardant polyolefin insulation pair twist type flexible cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205671095U CN202443780U (en) | 2011-12-29 | 2011-12-29 | Moisture-resistant halogen-free low-smoke flame-retardant polyolefin insulation pair twist type flexible cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202443780U true CN202443780U (en) | 2012-09-19 |
Family
ID=46825216
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205671095U Expired - Fee Related CN202443780U (en) | 2011-12-29 | 2011-12-29 | Moisture-resistant halogen-free low-smoke flame-retardant polyolefin insulation pair twist type flexible cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202443780U (en) |
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2011
- 2011-12-29 CN CN2011205671095U patent/CN202443780U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120919 Termination date: 20141229 |
|
| EXPY | Termination of patent right or utility model |