BS EN 50525-2-21:2011 - Page 2

Electric cables. Low voltage energy cables of rated voltages up to and including 450/750 V (U0/U). Cables for general applications. Flexible cables with crosslinked elastomeric insulation | Status: Current, Confirmed

1 Scope EN 50525‑2‑21 applies to flexible cables, insulated with crosslinked elastomeric compound, and sheathed with either crosslinked elastomeric compound or thermoplastic polyurethane (TPU). The cables are of rated voltages U0/U up to and including 450/750 V. The cables are intended for a variety of applications where appliances or equipment, including heavy industrial equipment, require a flexible connection to the power supply. The maximum conductor operating temperatures for the cables in this standard are 60 °C (R types), 90 °C (B types) and 110 °C (G types). The following particular cable types are included:

• - General purpose cables (RR and RN types);
• - Water-resistant cables (RN8 types);
• - General purpose cables (BB and BN4 types);
• - TPU sheathed cables (BQ types);
• - Heat resistant cables (GG types)

NOTE HD 516 contains extensive guidance on the safe use of cables in this standard.

This EN 50525‑2‑21 should be read in conjunction with EN 50525‑1, which specifies general requirements.