Standard Adapted to EN 50288-7 Cable Construction Conductor: Annealed copper wires according to BS EN 60228 Insulation: Polyvinyl chloride PVC Pairs: Twisted Identification Pairs: Black & white, continuously numbered on white core (1, 2, 3…) for multi-element Assembly: Concentric layers Collective Screen: Aluminium / PETP tape over tinned copper drain wire Inner Sheath: Polyvinyl chloride PVC Armour: Galvanised round steel wires Cable Sheath: Polyvinyl chloride PVC Colour: Black. Blue for intrinsically safe system Technical Data Flame Propagation: EN 60332-1-2 Operating Temperature Range: -30°C to +70°C Bending Radius: 10 x cable diameter Operating Voltage: 500V *Also available in 300V variant on request. Marking: RR KABEL RE-2X(St)Y nxmxa 500V EN50288-7 CE + 0001m n: No. of pairs m: Pairs a: Cross sectional area