How to extend the service life of fire-resistant cables
Release date:
2022-09-28 10:36
Source:
Materials used in the renovation Fire-resistant cable Improper storage methods can reduce the service life of fire-resistant cables. The correct method for storing fire-resistant cables should be adopted. To enhance users' awareness of the longevity of fire-resistant cables, manufacturers recommend paying attention to the following precautions during routine storage and installation:
I. Precautions when installing fire-resistant cables:
1. Many fire-resistant cables on exterior walls are directly installed on the exterior surfaces. It’s important to avoid any man-made damage and also protect them from direct sunlight, as ultraviolet radiation can accelerate cable aging, thereby reducing their service life.
2. Typically, plastic or metal conduits are used to protect the cables inside. It’s important to avoid damaging the conduits. Additionally, pay attention to the thermal conductivity of metal conduits to prevent potential hazards. If the conduits are installed underground, ensure proper control over their moisture levels.
3. There are many LAN cables under the eaves. Be careful not to expose them to direct sunlight, and ensure the ambient temperature doesn’t get too high.
4. Suspension or overhead cabling. This will be used during the installation of many communication cables, such as RS485 cables. Generally, cable sag and tension need to be carefully considered, and in some cases, bundling may be necessary as an additional support measure.
5. If directly laid in underground cable trenches, it's generally sufficient to regularly check the dryness and humidity inside the trench.
II. Storage and Precautions for Fire-Resistant Cables:
1. When storing wires, direct contact with acids, alkalis, and mineral oils is strictly prohibited; they should be stored separately from these corrosive substances.
2. The warehouse storing electrical wires must not contain harmful gases that can damage insulation or corrode metal.
3. Avoid storing cables exposed outdoors whenever possible, and wire trays must not be placed horizontally.
4. During storage, coils should be rolled up regularly (once every three months in summer; adjustments can be made to extend this interval during other seasons). When rolling, gently lift the downward-facing edge of the storage tray upward to prevent moisture from causing the bottom surface to rot or deteriorate. Always check carefully to ensure the wire ends remain intact while storing.
5. The shelf life of the wires is limited by the product delivery date, typically not exceeding one and a half years, with a maximum of two years.
6. Do not allow cables or cable reels containing cables to fall from heights during transportation, especially in low temperatures (typically around 5°C or lower), as this may cause cracking of the insulation and sheath.
7. When lifting the packaging, never lift multiple boards simultaneously. On vehicles, ships, and other transport vehicles, cable reels should be securely fastened using appropriate methods to prevent them from colliding with each other or tipping over, thereby avoiding any mechanical damage to the cables.
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