- Control cables can be used in machinery production and production lines as direct line or connection cable for measuring signal and control features , computer systems , for control devices of tool making machines , conveyor belts and conveyor systems and also in areas and applications where electrical integrity of the cable has to remain intact for at least three hours. This type of cables are installed in open air , underground , indoor or in cable ducts .
- shielded types are allowed to be used as earthed conductor . simultaneously , this also is permitted to apply it as a screen .
- Armoured types would be able to bear external mechanical forces.
In the voltage designation of U0/U(Um),The rated voltages of the cables considered in IEC standard are as follows: U0/U(Um)=300/500(600) V – 0.6/1(1.2) KV. Construction features: -Conductor size : Up to 10 sq.mm - No. of cores : 2 to 61 cores -Conductor material: Plain/Tinned copper -Conductor type: (Class1)/Stranded(class2)/Fine stranded (Class 5) - Round -Primary Insulation: Mica glass tape -Secondary Insulation: Cross-linked polyethylene (XLPE) or Polyvinyl chloride ( PVC) -Filler/Inner sheath: Polyvinyl chloride (PVC) or halogen free compound (for multi core cables -Metallic shield : Concentric copper wires, Braided, Copper tape or combination of wires & tape -Separation sheath: Polyvinyl chloride (PVC) or halogen free compound (LSHF) -Armour: Galvanized steel wire , tape or braided armour -Outer sheath: Polyvinyl chloride (PVC) or halogen free compound ( LSHF) Other futures : -Ultra violet (UV) resistant colored outer sheath -Low smoke and fume (LSF) -Halogen free and flame retardant (HFFR) - Oil & hydrocarbon resistant -Fire resistant Standards : IEC60331 , IEC60502-1 , VDE0250 , IEC60227 , PAS 5308 , BS6500 , ISIRI3569-2 , ISIRI607(53)
U0 is the rated power frequency voltage between conductor and earth or metallic screen.
U is the rated power frequency voltage between conductors.
Um is the maximum value of the "highest system voltage" for which the equipment may be used.
