The constant-power electric heating cable adopts alloy heating wire with constant output power. The power busbar is two (three) parallel insulated copper wires. The resistance wire is wound on the insulating layer, and the heating wire is placed at certain distances (ie the heating section length). It is connected to the busbar to form a continuous parallel resistance. After the busbar is energized, each parallel resistance generates heat, thus forming a continuous heating belt. The heating power of the constant power electric heating cable does not change with the change of the ambient temperature and is a constant value. The constant power electric heating cable has a constant calorific value per unit length, and the electric heating cable loop must be equipped with a thermostat to monitor the temperature.
The advantages of constant power electric heat tracing system are:
1. There is no starting current and the power is constant.
2. The maximum use length is long, the longest one-way use length can reach 300 meters, and the two-way use can reach 600 meters.
3. There is no attenuation, and the service life is about 3 years longer than the same conditions.
4. In terms of medium and long pipelines and large tanks, due to the long use length of the electric heating cable, the number of all circuits is small, and the total cost is low.
5. The calorific value is more stable than the self-controlling electric heating cable, and it focuses on active heating, not heating.
6. High temperature resistance grade, the highest constant power electric heating cable has a temperature resistance of 255 degree .
The defects of the constant power electric heating system are:
1. The nodes are not strong, and over time, the electric heating cable will have some non-heating conditions.
2. When temperature control is used in this method, the purchased components will be appropriately increased and the frequent activation of the thermostat will also affect the life of the thermostat, and the frequent impact
The current also disturbs the entire electric heating cable route.
3. Once the thermostat fails, the electric heating cable will be heated endlessly, so that the heated object reaches the highest temperature that it can accept. If it encounters danger
Electric heating
Electric floor heating
4. When the resistance wire is too long, it is easy to age, burn out, and possibly catch fire due to short circuit.
We are a professional manufacturer of constant-power electric heat tracing systems. We have many years of experience in the application of constant-power electric heat tracing cables. This product is used in many fields, including chemical, oilfield, industrial raw material refining and other winter pipeline insulation. , The advantages and defects are accumulated and summarized in practice, and we will continuously improve the performance of our products, do a good job in the brand image of the enterprise, and welcome customers to come and purchase.