According to the specific characteristics of the flame- […]
According to the specific characteristics of the flame-retardant cable, the design and application of the flame-retardant cable should be carried out, and the following problems should be noted:
(1) As the halogen-containing flame-retardant cables (including flame-retardant cables and low-halogen low-smoke flame-retardant cables) will release corrosive halogen acid gases when they are burned, which greatly impedes the firefighting work, delays the time for firefighting and exacerbates the spread of fire. It is recommended that halogen-free low-smoke flame-retardant cables should be designed and used as far as possible in public places with high population density. Any kind of flame retardant cable can be used in the work area with a small population density.
(2) It is impossible to distinguish the category A, B, and C of the flame-retardant cable from the appearance, and only by the manufacturer to guarantee the supply. Xiao Bian reminds everyone to choose the cable manufacturer carefully when selecting, and may request to participate in providing relevant information.
(3) Halogen-free and low-smoke flame-retardant cables have the advantages of low corrosion and low smoke compared with halogen-containing flame-retardant cables, but their electrical and mechanical properties are significantly reduced. Chaoyang Cables Co., Ltd. reminds that in the cable laying, halogen-free Low-smoke flame-retardant cables should have larger bending radii than halogen-containing flame-retardant cables.
(4) In the cable laying design, the non-flame-retardant cables and the flame-retardant cables should not be laid side by side. It is not appropriate to lay the flame-retardant cables of different flame-retardant types in parallel.