Quality requirements for external protective layer of cables

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Quality requirements for the external protective layer of cables

Author：Shenghua Cable Click： Time：2020-01-04 00:00:00

Many cables need to work in various harsh environments, such as water, sunlight, biology, fire, etc. Therefore, cable manufacturing companies like Shenghua Cable, in order to adapt their own cables to the requirements of various usage environments, producers apply a layer of sheath on the outer surface of the cable insulation layer, which is the cable protection layer.

shenghua cable structure shenghua cable copper core xlpe insulated rubber jacket

The cable protection layer is one of the three major components of the cable, and its main function is to protect the insulation layer of the cable from various external factors during operation, which can maintain stable work efficiency for a long time. Therefore, the protective layer of the cable is also the key to determining the quality and service life of the cable.

shenghua cable structure shenghua cable copper core xlpe insulated rubber jacket

There are many materials used for cable protection layer, and according to the different materials used, cable protection layer is mainly divided into two categories. One type is metal materials, such as lead, aluminum, steel, copper, etc. These materials are mainly used to manufacture sealing sheaths, armor, fire prevention or shielding. Another type is non-metallic materials, such as rubber, plastic, coatings, silicone, and various fiber products, which mainly serve as waterproof, flame retardant, fire-resistant, and corrosion-resistant.

For such an important cable protection layer, cable production naturally has strict quality standards for it. Taking Shenghua Cable as an example, Shenghua Cable has three most important requirements for the protection layer:

1. Power cables for single-phase AC circuits require female treated metal strips or steel wires to be armored.

2. In some extremely harsh environments, the protective layer of cables needs to be more strict and durable. Generally, these types of cables require special treatments such as metal sleeves, reinforcement layers, and armor layers to ensure that they can still work stably in extreme environments.

3. When used in low temperature environments or immersed in medicinal chemical liquids, cables need to have extruded jackets with low toxicity and flame retardant requirements to ensure their use.

The quality requirements for cable protection layer vary for different purposes and environments. Therefore, it is necessary to choose the appropriate cable according to local conditions, combined with the usage environment and methods, which is the scientific way. This is also what Shenghua Cable has always insisted on doing. Provide the most suitable cable products based on customer needs.

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Quality requirements for the external protective layer of cables

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