How it works: temperature control of heating cable heating element is uniformity between the two parallel metal bus crowded with the core package layer of PTC material. Cable end of the two bus connected to the mains, the current from a bus, lateral flow through the PTC material layer to reach the second bus, the PTC layer is a continuous parallel between the busbar resistance heating element that converts electrical energy into heat energy, operating system with thermal insulation. With the core resistance increases with increasing temperature to a high resistance, high electrical resistance to almost block the current core with temperature will reach the high limit is no longer elevated temperature limiter automatically. Cable the output power is mainly controlled by the temperature of the heating system's heat transfer process. 
 Installation Notes: 1. Install heating cable should not be playing hard-fold or long distance to pull crush. Note that to prevent the band outer layer of insulation to cut through the damage. Two. Connection band should not exceed the band maximum length, the band maximum length of 100 meters. 3. Conventional gate flange according to the manufacturers' design, installation and maintenance guide "Legend of construction. 4. Level deposited the position of the band should be close to the wall to keep the location in the bottom of the pipe level are linked closely to the construction. 5 The winding way construction in accordance with the installation coefficient. 6. Aluminum foil tape paste the whole band vertical applications, at intervals of 500mm-700mm fixed radial temperature tape wrapped around a week, the paste is first radial fixed and then the whole paste, to ensure that the heating cable and pipeline remain closely integrated with aluminum foil tape, plain appearance. 7. Power at the end, the band should be reserved for one meter, two pass, three junction box should be set aside 0.5 m, the junction box should be fixed in the pipeline. 8 prohibited to withstand the temperature is lower than the band maximum surface temperature of the power cord mixed with the band for one. 9. If they associated with hot body for the non-metallic body, the application of aluminum foil tape to increase the contact area. 10. Banding band with a metal wire is strictly prohibited. 11. The flange media disclosure, the band should be wrapped to avoid its being below. 12. Band a termination power, the other end of the terminal core is strictly prohibited short-circuited. Band terminal at the head tight and shear for the "V" type, you must use the matching sets of letters, use the shield will shield stripping 10 cm, to avoid causing a short circuit. Explosion-proof occasions, wiring, silicone rubber seal. 13. Installation with a hot, measurements insulation shield must be grounded, the insulation resistance values ??≥ 20 megohms. 14. Insulation construction should be after the heating cable is installed, and by the middle of acceptance before proceeding. 15. Insulation cover the outside pipe should be measured again an insulation insulation resistance ≥ 20 megohms. 16. Outside the insulation should be added to the police label affixed a generally clear position. Accessories label the location of the installed accessories. 17. Back-up systems, key pipeline reserve for emergency use, each pipeline route should be as a separate line installation, and a separate power supply. 18. Band power distribution system, shall have overload, short circuit and earth leakage protection, load matching to achieve the three-phase load balance.