Solar electric heating cable does not heat and fire become electric heating trace cable when using the problem, then how can we correctly identify the unqualified solar accompanied by tropical? The following will teach you how to recognize.

                       The structure of solar energy electric heating cable is basically divided into conductor, PTC, insulation three layer structure, the conductor is the electric heating cable current through the carrier, the size of its wire diameter is also decide the electric heating cable service life and prevent short-circuit fire of an important aspect. As we all know, the conductor diameter is to decide the conductor itself the size of the flow-carrying capacity, the conductor load is too large, the conductor itself will be hot. Will make the conductor and the PTC layer contact surface resistance becomes larger, the resistance in the circuit becomes larger, the current becomes smaller, the amount of heat becomes smaller. Conductor temperature and current exceeds its own tolerance range, the temperature is too high and too hot, will also lead to PTC spontaneous combustion, which will inevitably lead to the occurrence of no heat or fire.

                              Secondly, the electricity heating tracing cable soft is also unqualified, at present on the market soft electric tropical in the insulating material to join the PVC or rubber material, this product drought temperature is very low, long-term exposure to the outside is very easy to aging, especially can't resist the cold air in the north, short-term will produce cracks, and then into the water, the short-circuit caused by the explosion.

                           Finally, the insulating material must be irradiated crosslinking, irradiation crosslinking is the main purpose is to increase the insulation of a variety of mechanical physical and electrical properties, when the product is heated up, not by the irradiation of the product PTC and the insulation will be separated from the separation of some of the PTC and wire will be exposed to the outside, it is easy to produce a short-circuit caused by a fire.