1.       Property Scope of Application

Non-halogen low smoke flame retardant wire and cable may prevent human from being suffocated by toxic gas generated from accidental burning of wire and cable.Such products do not catch fire easily and do not spread the fire or give off toxic gas when on fire.They are suitable for using in the circumstance with fairly strict flame retardant and environmental protection requirement,such as high-rise buildings,hospitals,subways and shopping malls.

2.       Requirement of Application

(1).The permissible long-time working temperature of regular non-halogen low-smoke flame-retardant polyolefin insulation is not more than 70oC,and that of irradiation cross-linked non-halogen low-smoke flame-retardant olefin insulation is not more than 105oC.

(2).The temperature of laying cable is not lower than 0oC.

(3).The permissible min.curving radius during laying cable are as following:

A.The permissible min.curving radius for single-core power cable is 20(D+d)mm.If the main conductor is not round,then the d stands for actual outer diameter of conductor and the S stands for nominal sectional area of main conductor;

B.The permissible curving raidius is not less than 4D for the cable whose outer diameter(D) is less than 25mm.;And that is not less than 6D for the cable whose outer diameter(D) is not less than 25mm;

C.The permissible curving radius is at least 6 times outer diameter of armored and copper-tape screened cable.armoured control cables;at least 12 times the cable outer diameter for armoured and copper tape screened cable.