CENELEC - EN 50525-2-21
Electric cables - Low voltage energy cables of rated voltages up to and including 450/750 V (U0/U) - Part 2-21: Cables for general applications - Flexible cables with crosslinked elastomeric insulation
|Publication Date:||1 May 2011|
|ICS Code (Cables):||29.060.20|
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.