The first is that the ambient temperature of wire and cable is high, and the cable can normally transmit signals or electric energy under high temperature for a long time.
The other is the power transmission cable, which is mainly for the purpose of increasing the interception capacity.
Cables working in high temperature environment.
Ordinary cables are easy to produce insulation aging and burning phenomenon at high temperature, the use of cables lose performance, damage and can not be used.
The high temperature cable can work normally and stably under the rated high temperature, and the signal or power transmission performance is not affected. It can also guarantee the long service life of the cable.
This kind of functional cable is the most common one of the high temperature cable, the use of the characteristics are also the most easy to understand.
The overload type high temperature cable is mainly developed to reduce the cable diameter and weight under the precondition of current carrying, and to lighten the load.
Generally speaking, the higher the working temperature of the cable, the greater the carrying capacity of the cable with the same cross section.
As aircraft and automobile and other occasions, the significance of weight reduction is considerable, the use of high temperature cable to greatly reduce the cross section.
When the operating temperature rises from 90℃ to 155℃, the current carrying capacity increases by 50%. Under the same current carrying capacity, the weight of the cable will be reduced by half and the cost will be reduced.
Of course, with high closure, the power loss of most insulating materials will also be increased.