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EN 50525-3-21:2011 Standard

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  Keywords:

#cables #gases #note #corrosive #checked

This standard can be totally or partially supervised by:
  •   EN 50525-3-21:2011/AC:2013
  •   Directive

    Low voltage (LVD) Directive (2014/35/EU)

      Last Official Journal reference

    Tuesday 22nd of July 2025

      Description:

    Electric cables - Low voltage energy cables of rated voltages up to and including 450/750 V (U0/U) - Part 3-21: Cables with special fire performance - Flexible cables with halogen-free crosslinked insulation, and low emission of smoke

      Purpose

    EN 50525-3-21 applies to flexible cables, insulated and sheathed with halogen-free crosslinked compound and having low emission of smoke and corrosive gases when exposed to fire. NOTE 1 Low emission of smoke is checked in accordance with EN 61034-2. Low emission of corrosive gases is checked as part of the check for absence of halogens (see Annex B of EN 50525-1). The cables are of rated voltage U0/U 450/750 V. The cables are intended for the connection of equipment and machinery to the fixed supply. The maximum conductor operating temperature for each of the cables in this standard is 90 °C. NOTE 2 HD 516 contains extensive guidance on the safe use of cables in this standard. This EN 50525-3-21 should be read in conjunction with EN 50525-1, which specifies general requirements.

      Publication

    Wednesday 20th of April 2016

      Related Standards

    EN 61439-4:2013

    Low voltage (LVD) Directive (2014/35/EU)

    Low-voltage switchgear and controlgear assemblies - Part 4: Particular requirements for assemblies for construction sites (ACS)

    EN 60127-2:2014

    Low voltage (LVD) Directive (2014/35/EU)

    Miniature fuses - Part 2: Cartridge fuse-links

    EN 50525-2-71:2011

    Low voltage (LVD) Directive (2014/35/EU)

    Electric cables - Low voltage energy cables of rated voltages up to and including 450/750 V (U0/U) - Part 2-71: Cables for general...

    EN 50525-2-72:2011

    Low voltage (LVD) Directive (2014/35/EU)

    Electric cables - Low voltage energy cables of rated voltages up to and including 450/750 V (U0/U) - Part 2-72: Cables for general...

    EN 50525-2-81:2011

    Low voltage (LVD) Directive (2014/35/EU)

    Electric cables - Low voltage energy cables of rated voltages up to and including 450/750 V (U0/U) - Part 2-81: Cables for general...

    EN 50525-2-82:2011

    Low voltage (LVD) Directive (2014/35/EU)

    Electric cables - Low voltage energy cables of rated voltages up to and including 450/750 V (U0/U) - Part 2-82: Cables for general...

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    CELAB performs voluntary inspection activities on technical construction files to check their contents.

    CELAB can accomplish all the required tests in order to affix the CE-marking related to EMC, LVD, RED, MDD, machines and many others.

    CLICK HERE TO GET TESTS AND INFO ON THE EN 50525-3-21:2011 STANDARD

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