This European Standard applies to oil resistant polyvinyl chloride insulated and sheathed flexible cables. Screened and non-screened types are included. The cables are of rated voltages U0/ U 300/ 500 V. The cables are intended for the interconnection of manufacturing machines. The maximum conductor operating temperature for the cables in this standard is 70 °C. NOTE HD 516 contains extensive guidance on the safe use of cables in this standard. This EN 50525-2-51 should be read in conjunction with EN 50525-1, which specifies general requirements.