What is Teflon cable?And What's the use of it？
What is Teflon cable?
Teflon cable, also known as high temperature cable, refers to the use of fluorine plastic insulation materials (FEP,PFA, PTFE) cable.
Excellent corrosion resistance, almost insoluble in any organic solvent, oil resistance, strong acid, strong alkali resistance, strong oxidant, etc. Excellent electrical insulation performance, high voltage resistance, low loss at high frequency, no moisture absorption, large insulation resistance; Excellent fire resistance, aging resistance, long service life.
1, rated temperature: -65℃ ~ +250℃ (maximum ambient temperature: 250℃ minimum ambient temperature: -65℃)
2, rated voltage: 600V
3, guide body: single or multiple strands of tinned copper wire, silver copper wire
4, color: red, yellow, blue, white, black, green, brown, orange, gray, transparent, etc
5, unique edge: polyperfluoroethylene propylene (FEP), fusible tetrafluoroethylene (PFA)
6, construction: Teflon wire core + teflon sheath
7, properties: excellent corrosion resistance, almost insoluble in any organic solvent, oil resistance, resistance to strong acid, strong alkali, strong oxidant, etc.; Excellent electrical insulation performance, high voltage resistance, low loss at high frequency, no moisture absorption, large insulation resistance; With excellent non-flammable, non-aging performance, oxygen index ≥90, long service life; Test voltage 3000V, spark test 7000V no breakdown.
Widely used in metallurgy, petroleum, chemical industry and power plants and other industrial and mining enterprises, in high temperature conditions and harsh environment as a variety of electrical appliances, instrumentation and automatic devices of the connection line.
How do we choose high-temperature teflon wires?
Teflon wire and cable long-term allowable current-carrying capacity refers to the current value when the temperature of the cable conductor reaches the long-term allowable operating temperature after reaching thermal stability. The size of the current depends on the highest allowable working temperature of the product, and the working system with electricity (such as long-term continuous load, variable load, discontinuous load operation) and the laying of wire and cable, environmental conditions have a very big relationship. The amperage usually refers to the allowable operating current under long-term continuous load operation, and is converted accordingly in other cases.
The wire and cable used for power and lighting lines, the wire needed for some special occasions, such as high voltage ignition line of vehicles, the compensation wire of instrument measurement system, there is no requirement of carrying capacity.
The cable manufacturer only provides the cable section data, not the rated current data of the cable, which is correct. Because the rated current of the cable is related to the environment, the working duration of the load, the allowable working temperature of the cable insulation material, the allowable voltage drop of the cable and other parameters, the electrical designer of the purchasing party should make a comprehensive consideration and select the appropriate cable section.
The economic section of the cable is still misunderstood. Some designers and owners hold that the minimum section of the cable is the economic section under the condition that the temperature rise does not exceed the standard. This is a wrong view, because he ignores the economic loss caused by the energy consumption of the cable itself. Under the same load, the larger the cable section, that is, the smaller the current density of the cable, the lower the energy consumption of the cable.
The temperature rise of the cable is related to the current density. The higher the current density, the higher the temperature rise. The life of insulating materials is related to the working temperature of insulating materials. The higher the working temperature of an insulating material, the shorter its life.
The economic section of cable is a comprehensive parameter, which involves the initial investment cost of cable and the service life of cable.