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Analyze the principle of self-limiting electric heating and tropical heating

Source of information: Anhui Cable Group Co. , Ltd.Browsing times: 617 Release time: 2019-04-19

Before talking about the self-limiting electric heating cable, let's first understand the electric heating cable. The electric heating cable is a heat tracing product that converts electrical energy into heat to thermally compensate the pipeline medium. The application area is relatively wide, including power plants, chemicals, petroleum, firefighting, natural gas, residential buildings and civilian solar pipelines and other equipment. The biggest role of electric heating cables is to prevent frost and keep warm.

Electric heating cables can be divided into four types: self-limiting temperature heating cables, constant power heating cables, MI heating cables and heating cables. Each type of heating cable has different names, different functions, and different uses. Its working principle is also different. In view of the heating principle of the electric heating cable, the self-limiting electric heating cable is introduced below.
The self-limiting electric heating cable uses PTC thermistors to convert electrical energy into thermal energy. The working principle of the positive temperature coefficient allows this electric heating cable to self-adjust the power as the temperature changes. It can be seen from the appearance that the true technology of self-limiting electric heating cable PTC is a black conductive plastic layer between parallel busbars, and the two busbars only play a conductive role. This characteristic determines that the self-limiting heating and heating cable installation can be overlapped and crossed, and the wires and cables will not be burned because of the high temperature.
In heating applications, self-limiting electric heating cables are more energy efficient than other electric heating products. Self-limiting electric heating cables use PTC thermistors, while constant power electric heating cables, MI heating cables and heating cables use heating wires. In order to convert electrical energy into thermal energy, the temperature cannot be adjusted by itself. A temperature controller must be used to actively limit the temperature. This also determines that a safe distance must be considered during installation and that it cannot be installed in a crossover and overlapping manner.
The advantage of self-limiting electric heating cable is energy saving, environmental protection and no manual maintenance. It has an automatic adjustment function and can automatically adjust the output power as the temperature of the heated medium changes, which is very simple and convenient. Users need to order the heating cable from a professional regular manufacturer to ensure the safety of use.
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