How to Prevent Damage to Fire-Resistant Cables in Winter
Release date:
2022-10-08 11:45
Source:
Fire-resistant cable It is one of the essential materials for power transmission and is widely used in economic production. Once a fire-resistant cable malfunctions, it not only threatens the safe and stable operation of the power grid but also causes financial losses to enterprises—and in severe cases, could even trigger a cascading chain reaction of damage. Below, we’ll guide you on how to prevent fire-resistant cables from getting damaged during winter.
1. Factory Transportation: When the product is loaded onto the transport vehicle, it must be kept insulated and protected with appropriate measures.
For example, use enclosed transport vehicles to prevent products from being directly exposed; place a cushion—such as bedding or other soft foam—on top of the products; and handle them with care during loading—avoid rough handling—to prevent excessive bending.
2. Upon arriving at the destination or construction site, the product supplier shall assign personnel to supervise and prevent any rough handling during the unloading process.
3. Storage: Store the product indoors, and place a protective layer—such as wooden boards, bedding, or foam—on the storage surface. This will prevent the product from freezing or getting damp. Also, ensure the product does not come into direct contact with the ground to avoid scratching the fire-resistant cable jacket.
4. When laying and installing the product: Choose to work during the warmer hours of noon and afternoon. If possible, preheat the product with a heater or other equipment before use, ensuring it reaches optimal performance conditions. If the product will be buried underground, you can lay down protective layers such as fabric or foam inside the cable trench in advance.
If threading wires through conduits, make sure both the inside and outside of the conduit are free of obstructions beforehand to prevent scratching the wires. Pay special attention to metal conduits—always purchase high-quality ones. Poor-quality metal conduits may have numerous sharp protrusions that could easily damage the wire insulation.
5. In winter, when temperatures drop significantly, many construction workers have noticed that even fire-resistant cable products that usually perform well often exhibit issues such as stiff wires, peeling or damaged insulation jackets, and other similar problems during installation and laying.
Actually, it’s not a quality issue with the product itself—it’s simply the harsh winter conditions. The jackets of fire-resistant cable products are typically made from ordinary plastic (PVC) or rubber. When exposed to sub-zero temperatures, these materials become brittle and rigid, causing the entire line of fire-resistant cables to lose their flexibility and toughness. As a result, even slight external forces could lead to jacket detachment and damage.
In winter, especially in northern parts of our country, outdoor temperatures often drop below zero, and surface temperatures can be even lower. Therefore, if fire-resistant cable products are left outdoors or placed directly on the surface, their outer sheathing is likely to peel off.
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