NYY , NAYY , N2XY , NA2XY
- LV power cables for energy supply are used for industry and distribution boards , power stations , panels , house connecting boxes , subscriber networks & street lighting . those cables are installed in open air , underground , indoor and in cable ducts .
In the voltage designation of U0/U(Um), The rated voltages of the cables considered in IEC standard are as follows: U0/U(Um)=0.6/1(1. 2) – 1.8/3(3.6) KV. Um is the maximum value of the "highest system voltage" for which the equipment may be used. -Conductor size : Up to 630 sq.mm - No. of cores : 1 to 5 cores -Conductor material: Plain/Tinned copper or aluminum -Conductor type: Solid(Class1)/Stranded(class2)/Fine stranded (Class 5) - Shaped or round -Insulation: Cross-linked polyethylene (XLPE) or Polyvinyl chloride ( PVC) -Filler/Inner sheath: Polyvinyl chloride (PVC) (for multi core cables if applicable.) -Sheath: Polyvinyl chloride (PVC) or high density polyethylene ( HDPE) Other features : -Ultra violet (UV) resistant colored outer sheath -Low smoke and fume (LSF) -Halogen free and flame retardant (HFFR) - Oil & hydrocarbon resistant -Fire resistant -Vermin proof Standards : IEC60502-1,VDE0271,ISIRI3569-2 Note : Cables with rated voltage 1.8/3 (3.6) KV will be fabricated with one or three cores and have a metallic layer surrounding the cores either individually or collectively .
U0 is the rated power frequency voltage between conductor and earth or metallic screen.
U is the rated power frequency voltage between conductors.
Construction features:
