Motivation: thermal element of the temperature-controlled tropic cables is the core belt made of a single layer of ptc material, evenly distributed between the two parallel metal terminals. After the ptc material has been melted out, cooled and shaped, the carbon particles scattered within it form an innumerable fine conductive carbon network。
When they cross the two parallel main lines, they form the ptc of the core belt and link the circuit. When two parent lines at one end of the cable are connected to the power source, the current flows horizontally from one parent line through the ptc material layer to the other to form and link the circuit。
The ptc layer is an electrical retardant heater that is continuously and connected to the parent line, converts the electrical energy into thermal energy and provides heat protection to the operating system. When the core belt temperature rises to the corresponding high resistance zone, the electrical resistance is so large that the current is almost blocked that the core belt temperature is no longer elevated (i. E. Automatically limiting temperature)。
At the same time, the core band is heated to a lower temperature heating system through a shield, and the amount of heat delivered per hour at the time of stabilization is equal to the electrical power of the cable. The output power of cables is mainly controlled by heat transfer and the temperature of the heating system。
Extension
The inner cores of the electric tropics are guided by copper on both sides. At normal working hours, 220v voltage is added to the line, and the portion of heat generated between the two lines is made from semiconductive plastics, whose conductivity varies according to ambient temperature. When ambient temperature rises, the resistance increases and the heat is reduced. When ambient temperature rises to a certain level, the electricity flow within semiconductive plastics is minimized.
The heat generated by the tropics is close to zero, and it is clear from the structure and rationale of the tropics of electrical tropics that the length of the tropics can be cut at will depending on the required heat. The increase in the length of the tropics is equivalent to an increase in the load between two power lines; a decrease in the length is equivalent to a decrease in the load between two power lines。
The two end-lines of the tropics of electricity are not short-cut and do not affect their performance when the tropics overlap, and it automatically regulates heat discharges according to temperature。
