First, the high temperature heating cable structure dual core line: core wire having a positive temperature coefficient of resistance of the metal alloy wire composed of linear rated power 18w / m. 2 Insulation: EASTFIRE heat insulation heating cable with double insulation structure, the insulating layer directly affects the quality of life of the heating cable, heating cable insulation temperature EST through trial and error, at 140 ℃ high temperatures, high temperature resistant layer deformation, not shrinking. 3 GND: ground wire from the 8 diameter of 0.4mm tinned copper lines. 8 tinned copper wire area of ??1.0048m square meters, in line with the provisions of the International Electrotechnical Commission IEC800 line shall not be less than 1m square grounding requirements. Metal shield 4: In the process of using the heating cable, since the current role in the magnetic field is formed around the heating cable, if more than 100 micro Tesla fields will be on human health and other electrical impact. Through the effective protection of the metal shield, the electromagnetic field within the core control line, so they can not spread out, and then by the electromagnetic field into the earth ground wire to make the heating cable and the earth formation potential. Through testing, EASTFIRE electric floor heating value of the electric field intensity of labor is within the scope of national security, 1/1000 (state of the electric field strength is 4000 V / m, measured data EASTFIRE heating cable is 4 volts / m); magnetic induction the highest value was 13%, the lowest 6% (state of the magnetic induction intensity is 100 Witte Tesla, EASTFIRE heating cables measured data up to 13 Tesla Werther, Werther minimum 6 Tesla). Far below the national standard, higher than the national safety regulations, harmless, can be assured. 5 Outer sheath: PVC outer sheath for high-quality material. PVC has good anti-corrosion, anti-acid, anti-aging effects, and 100% waterproof. EAST EASTFIRE dual conductor heating cable type Table: two, high temperature heating cable technical data related to a heating cable diameter: According to the State Administration of Quality Supervision, Inspection and Quarantine and the Standardization Administration of China in 2007 published "GB/T20841-2007IEC 60800 : 1992 rated voltage 300/500V comfort heating and prevention of ice heating cables "provides heating cable diameter not less than 6mm, EASTFIRE heating cable has a diameter of 6.5 ± 0.3mm, higher than the national standard. 2 heating cables linear power ─ 18W / m EAST EASTFIRE dual heating cable temperature indicators: Quality Supervision, Inspection and Quarantine and the Standardization Administration of China in 2007 published "GB/T20841-2007/IEC 60800:1992 rated voltage 300/500V comfort heating and prevention of ice Heating cables "provisions; heating cable core wire heating temperature up to 90 ℃, cable PVC jacket up to 65 ℃. And EASTFIRE temperature heating cable core wire heating temperature up to 100 ℃, PVC sheathed maximum temperature can be resistant to 90 ℃. EASTFIRE high temperature heating cables indicators are far higher than the national standard, and its meaning is: made with ordinary electric heating cable to warm above can not be used in its thick carpet or other floor coverings thereof as otherwise scattered due to temperature rise heating cable does not come out will cause malfunction, resulting in heating cable is not heating, and high-temperature heating cable EASTFIRE there is no such risk, EST's destructive test data are as follows: core wire 140 ℃, the carpet temperature of 100 ℃, carpet surface temperature 48 ℃. Carpet thickness is 10mm, test time 180 days * 24 hours non-stop, high temperature heating cable continues to work, while a control under the same conditions with a thick mulch of ordinary heating cable 11 days after the power has been damaged, the system is no longer Hot! EASTFIRE high temperature heating cable destructive testing: experimental purposes: When EASTFIRE high temperature heating cable PVC jacket is completely high temperature carbonization, the heating cable is still working properly, no leakage phenomenon. Experiment time: work under high temperature without interruption. Test temperature: 140 ℃. Heating cable material Specifications: According to the State Administration of Quality Supervision, Inspection and Quarantine and the Standardization Administration of China in 2007 published "GB/T20841-2007/IEC 60800:1992 rated voltage 300/500V comfort heating and prevention of ice Heating cables" Standard , heating cables in the heat conductor XLPE outer layer need only one layer, then a ground wire, shielding layer, the outer sheath. EASTFIRE company developed high-temperature heating cable core wire and the heat insulation layer between the special high temperature resistant material, it can at 140 ℃ high temperature deformation, not melt, not bad, not burning, is the real The special high temperature material, the outer layer of the tear together, the high mechanical strength XLPE insulation, EST heating cable temperature, insulation properties and resistance to mechanical damage is much higher than the national standard, is to meet the complex and diverse environments and the production of new heating heating cable products.