Application description of variable power and constant power strip heater
Electric heat tracing is divided into electric power tracing products (whether domestic production and foreign production) subdivided into variable power electric heating products and constant power electric heating products, but electric heating products are diversified. The application is different.
The so-called variable power type has been changing its power after being energized, and it is changing with the external environment, insulation materials, and heat-conducting materials. Therefore, it has fluctuations in the starting current, which is large and small. Usually, the start of domestic production is large, and some manufacturers always avoid this problem.
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.
The variable power electric heating cable (electricity heating) is composed of two conductive metal wires and an insulating layer composed of a conductive composite polymer material, and is characterized in that the electric resistance of the electric heat tracing material has a high positive temperature coefficient characteristic of electric resistance, and Parallel to each other; can automatically adjust the output power according to the temperature change of the heated system, and automatically control the heating temperature. The self-controlled temperature and electric heating products provided by Regal have noticed how to reduce the resistance value of the conductive composite and the conductive metal busbar interface in the production, which promotes the small starting current and is close to the advanced level in the same industry abroad. Therefore, it has automatic temperature limit, automatic temperature control, fine-tuning temperature from time to time, can be arbitrarily shortened or used within a certain range, allows overlapping use without high temperature points and burnout, and has no worries after use.
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. In the use of electric heat tracing system, our company promotes the use of self-regulating electric heating cable for heating products, which is convenient, safe, reliable and energy-saving.