The function of the outer sheath of the cable is to strengthen the insulation performance while protecting the cable from mechanical damage. In order to adapt to the normal operation of the cable in different scenarios, the outer sheath plays a key protective role. Such as fireproof cables, trailing cables, and power cables, their quality is closely related to their sheath.
Sheath material:
All high-quality products adopt the type of sheath material specified by international standards, which have high strength and high elongation. The specified characteristics meet the requirements, such as: flame-retardant, fire-resistant, waterproof, acid and alkali resistance, etc.
Inferior products are made of recycled materials, or have low resin content, or no expensive compounding agents are added to the materials, their strength is low, the elongation rate is small, and the specified characteristics do not meet the requirements, which affects the life of the cable, endangers the insulator, and is easy to crack and oxidize.
Sheath thickness:
The thickness of high-quality products is strictly in accordance with international regulations to protect the tensile and compressive strength of the cable and effectively play the role of a protective cover.
The thickness of inferior products does not meet international requirements, affects the service life of the cable, endangers the insulator, and is unsafe to use.
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