The hot and cold wire joints, waterproof insulation sheath, shielding layer and production raw materials of the heating cable are the four key points for evaluating the quality of the heating cable. In particular, the joint and the sheath directly affect the service life and safety of the heating cable, and the production materials are more Is the key to the key;
Hot and cold wire connector:
Adopting the European implicit joint technology, the internal hot wire of the heating cable is directly welded to the cold wire, and the outer PE insulation layer, the aluminum foil armor shield layer, the leakage protection tinned copper wire and the PVC outer sheath are all passed through the pipeline once. Forming, producing high-quality finished products at one time, no need for manual splicing; At present, many domestic and foreign brands of heating cables, hot and cold wire joints are manually spliced ​​or spot welded, and the outer layer is closed with heat-shrinkable tubes. The production process is backward, hidden dangers and failures are more Many, and the diameter of the Ming joint is too large (about 10-20mm) is not convenient for construction; in contrast, the hidden joint improves the reliability and safety of the product, whether it is waterproof or electrical safety. At present, the world-class implicit splicing technology guarantees the quality of the heating cable, and the failure rate of the product is almost zero.
Waterproof insulation sheath:
It adopts cross-linked polyethylene inner insulation layer and PVC outer sheath, which is resistant to high pressure, high temperature, penetration resistance, strong chemical corrosion resistance, safe and reliable, 100% waterproof penetration, tensile strength and compressive strength suitable for installation and use in various environments. Ensure the continuity of the insulation and the safety of use. Each of the Sweder heating cables has been tested by 3000v high voltage, which is much higher than the 2000V standard in IEC800 testing. The anti-deformation stress 1400N exceeds the 120N standard of IEC 800 and meets the high standards in Europe;
Armored shield:
A layer of aluminum foil shielding layer is added outside the inner insulating layer to greatly increase the mechanical strength, increase the tensile and compressive strength, and effectively enhance the service life of the heating cable. This armored technology is 100% waterproof, tensile and compressive, and can be used in various environments such as bathrooms, rooms, and basements. The metal shield has a low back potential and has little effect on the environment. It is far superior to the national standard for isolating electromagnetic radiation. The 8 tinned copper wires are in continuous contact with the metal shield. The tin plating ensures the durability of the ground wire and the aluminum shield and the terminal. Contact, greatly improving safety;
Alloy heating wire:
Copper, nickel and chrome alloys have proven to be the best heating cable materials; single alloy wires can withstand temperatures up to 2000 degrees; temperature has little effect on thermal resistance; maintain constant output and last for more than 50 years;
production material:
In the production of raw materials, strict control, PE insulation layer, aluminum foil armor shield, leakage protection tinned copper wire, PVC outer sheath and other selected production materials must meet the European ROHS environmental requirements, without six heavy metal toxic elements Strong fire resistance, burning or high temperature will not release smoke and toxic gases, it is a truly green product.
Production and testing equipment:
Configure product testing equipment to ensure that no defective products leave the factory. The laser flaw detector can accurately determine the fault point and provide a strong guarantee for construction and maintenance.
Certification of heating cables: only the most important ones. The more complete the proof, the more you can explain the problem!
European ROHS Environmental Directive Requirements
EU CE certification
US (Canada) UL Certification
National Wire and Cable Quality Supervision and Inspection Center Certification
IEC800 International Electrician Certification
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