Electric tracing cables can be divided into self-limiting temperature series, constant power series and MI armored heating cables, among which the self-limiting temperature series is a common model in electric heating products, which is composed of conductive polymer and two parallel metal wires It is composed of an insulating protective layer, which is characterized by the conductive polymer having a high positive temperature coefficient characteristic, and they are connected in parallel, which can automatically adjust the output power according to the temperature change of the heated system, and automatically limit the heating temperature.
The self-limiting temperature electric heating cable can also be cut at will or used in a certain range, allowing multiple overlaps, making the installation easier. The low temperature self-limiting electric heating cable can maintain a temperature up to 65 degrees, the electric heating cable length is 100m, and the ambient temperature is 75℃, shake it with a 2500VDC meter for 1 minute, the minimum insulation resistance (wire and shielding room) is 1200MΩ, medium temperature The minimum insulation resistance (wire and shielding room) of the self-limiting temperature electric heating cable is 3000MΩ.
The output power when the low temperature self-limiting temperature is 10℃: 10~35W/m, and the output power when the medium temperature self-limiting temperature is 10℃: 35W~65W/m. After 300 cycles of low temperature from 10°C to 99°C and medium temperature from 10°C to 149°C, the heating value of the electric heating cable is maintained above 97%. Its working voltage is 12V, 24V, 36V, 48V, 110V, 220V, 380V, 420V.
The self-limiting electric heating cable has uniform temperature, no overheating, quick heating start, energy saving, easy installation and maintenance, and has been widely used in antifreeze, heat tracing, heat preservation, viscosity reduction, etc. of pipelines, equipment and containers in various industries.