Heat resistant cables and high-temperature wires and cablesHeat resistant cables and high-temperature wires and cables are usually determined by two types. The first type is when the environmental temperature of the wire and cable is high, and the cable can transmit signals or electrical energy normally under high temperature for a long time; Another type is power transmission cables, and the primary intention is to add interception.
Cables used for work in high-temperature environments. Generally, cables are prone to insulation aging and scorching at high temperatures, causing them to lose their functionality and become damaged, rendering them unusable. High temperature cables can operate normally and stably under additional high temperatures, without affecting signal or power transmission functions, and can also ensure that the cable has a longer service life. This type of functional cable is the most common and widely used type of high-temperature cable, and its application characteristics are also the easiest to understand.
The primary purpose of adding load to high-temperature cables is to reduce the outer diameter and weight of the cable while ensuring the current carrying capacity, and to promote lightweighting. Generally speaking, the higher the operating temperature of a cable, the greater the current carrying capacity that a cable of the same cross-section can pass through. In situations such as airplanes and cars, reducing weight has a significant meaning, and using high-temperature cables greatly reduces the cross-section. If the operating temperature rises from 90 ℃ to 155 ℃, the current carrying capacity can only increase by 50%. Under the same current carrying capacity, the cable weight needs to be reduced by half, and the cost also decreases. Of course, with high current cutoff, the electrical energy loss of most insulation materials will also increase.