Three-phase constant power heating cables are basically the same principle difference is that single-phase with single phase power supply, three-phase constant power band with a three-phase triangle-powered, three-phase with the addition of the characteristics of single-phase heating cable, especially suitable for long-distance, large diameter pipe heating and insulation can be used in the factory district, two explosive gas mixtures in T3 group occasions. 



 Product structure and working principle 
 Three parallel insulated copper wire for the power bus, the heating wire wound around the inner jacket insulation layer and the heating wire at intervals of a certain distance (ie, a "eagerly"), respectively, followed by power bus AB-BC-CA-AB ... ... cyclic connection every 2 phases form a continuous parallel resistance. When the bus pass to the phase power supply, the parallel resistance heating, and thus form a continuous three-phase power supply and tropical. 


 Fluid to maintain the highest temperature: refers to the medium inside the tubes need to maintain the highest process temperature, usually not more than the specified value of this table 
 Rated voltage: 380V maximum temperature: 205 ° C 
 Normal insulation resistance: ≥ 20 megohms Dielectric strength: 2500V 50Hz/1min 
 Insulation materials: with F46 fluorine plastic size (including textile and outer sheath): 12 × 6.3mm