Flexible flat cable is a kind of multi-strand copper stranded conductor with insulating material, through high-tech automation equipment production line through the sheath material pressing the flat cable, with soft, arbitrary bending fold, relative thickness thin, small volume, simple connection, convenient disassembly, etc. We can choose any number and wire spacing, make online more convenient, reduce the size of the products, reduce the production cost, improve production efficiency, suitable for electrical equipment for data transmission in the cable or power transmission.Common specification is 0.5 mm, 0.8 mm and 1.0mm, 1.25mm and 1.5mm, 2.0mm and 2.5mm Various spacing flexible cable wire.
The structure characteristics of flat cable
The flat cable wire core is made of soft structure to ensure flat cable good soft performance.
Using butyl polymer insulation and protection layer material, and improve the flat cable flex characteristics and anticorrosive and hardy properties.
Insulated wire core color separation, provide convenience for flat cable installation.
According to customer needs, increase on both sides of flat cable core wire rope or other load bearing components (yffbj type).
Coaxial cable is also can make communication elevator flat cable
2016年3月22日星期二
2016年3月7日星期一
Introduction of the cause and consequence of power cable fever
Power cable by a certain load current, will be hot, with the increase of load current and cable surface temperature is higher, if not handled in time, the consequences. Such as: polyvinyl chloride (PVC) cable, wire core temperature of 70 degrees is limit considered, low surface temperature will be 5 ~ 10 degrees. So the cable surface temperature under 60 degrees basic is safe, considering from the power maintenance, the lower the temperature, the better, of course.
In the operation of the cable in heating reasons are as follows:
1. Cable conductor resistance does not conform to the requirements, resulting in cable heating phenomenon in running.
2. Cable wide choices, the use of the conductor cross section of the cable is too small, in the operation of the overload phenomenon, after long time use, the heating and cooling of the cable have fever due to unbalanced phenomenon.
3. Arrange too dense, cable installation, ventilation cooling effect is not good, or cable near too close to other sources of heat, affected the normal heat dissipation of the cable, may also cause cable heating phenomenon in running.
4. Joint manufacturing technology is bad, no pressure to close, cause whenelectrified resistance is too large, also will cause the cable to produce hot phenomenon.
5. Cable insulation is not good, cause the insulation resistance is small, also can produce in the operation of the heating phenomenon.
6. Armored cable, local sheath damage cause slow damage to insulation performance, after the water gradually reduce insulation resistance, can cause heating phenomenon in the operation of the cable.
After cable heating phenomenon, if you don't find out why timely troubleshooting, continuous electric cable to continue after the operation will produce heat insulation breakdown phenomenon. Cable causing interphase short circuit trip phenomenon, serious may cause fire.
In the operation of the cable in heating reasons are as follows:
1. Cable conductor resistance does not conform to the requirements, resulting in cable heating phenomenon in running.
2. Cable wide choices, the use of the conductor cross section of the cable is too small, in the operation of the overload phenomenon, after long time use, the heating and cooling of the cable have fever due to unbalanced phenomenon.
3. Arrange too dense, cable installation, ventilation cooling effect is not good, or cable near too close to other sources of heat, affected the normal heat dissipation of the cable, may also cause cable heating phenomenon in running.
4. Joint manufacturing technology is bad, no pressure to close, cause whenelectrified resistance is too large, also will cause the cable to produce hot phenomenon.
5. Cable insulation is not good, cause the insulation resistance is small, also can produce in the operation of the heating phenomenon.
6. Armored cable, local sheath damage cause slow damage to insulation performance, after the water gradually reduce insulation resistance, can cause heating phenomenon in the operation of the cable.
After cable heating phenomenon, if you don't find out why timely troubleshooting, continuous electric cable to continue after the operation will produce heat insulation breakdown phenomenon. Cable causing interphase short circuit trip phenomenon, serious may cause fire.
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