The electric heating cable on the market can be subdivided into a self-controlled electric heating cable and a constant power electric heating cable.
The self-regulating electric heating cable automatically reduces heat (increased resistance), and when the temperature is lowered, the tropics will release more heat (resistance decreases). This self-temperature control performance compensates for temperature changes at any time, avoids overheating of the heating cable, and tightly controls the temperature of the heated body.
The electric heating cable can be entangled at will, knotted without worrying about overheating. In general, the electric heating wire will be overheated and burned at the tropical staggered point, which is more energy efficient than steam and has no leakage.
Self-controlled temperature electric heating does not require temperature control equipment and runs automatically. Safety explosion-proof, economical and energy-saving, widely used in petroleum, chemical, steel, electric power and other industrial enterprises, pipelines, storage tanks, heat insulation, anti-coagulation, anti-freeze. The cable is suitable for electric heating with pipes in common areas, hazardous areas and corroded areas.
The so-called constant-power type electric heating cable has a constant power after being energized. It does not change with changes in the external environment, insulation materials, and heat tracing materials, and is usually changed by the temperature sensor at a certain point. Constant power type electric heating cable It is two (220V) or three parallel insulated copper core wires as busbars, and the heating wire is wound on the insulating surface, and the heating wire is at a certain distance (ie, the number of heating nodes) and the bus bar. Cross-parallel to form a continuous parallel resistor. The electric heating cable provided by Xidian can be arbitrarily cut, and it is not allowed to overlap, cross and sandwich between the materials of the heat insulation layer to avoid overheating damage of the electric heating belt.
The constant power parallel heating electric heating unit has a constant heat generation per unit length, and the longer the electric heating cable used, the greater the total power output. The electric heating cable can be arbitrarily cut at the site according to the actual length required. In addition, due to its softness, the electric heating belt can be easily attached to the surface of the pipe. The metal shielding net of the outer layer of the electric heating cable can prevent static electricity generation and safety grounding. It not only improves the overall strength of the electric heating cable, but also promotes the transmission. The role of heat and heat.
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