UNE-EN 50399:2023

EN 50399 specifies the apparatus and methods of test for the assessment of vertical flame spread, heat

release, smoke production and occurrence of flaming droplets/particles of vertically-mounted electric cables

under defined conditions.

NOTE For the purpose of this standard, the term electric cable covers all power, control and communication

cables, including optical fibre cables and hybrid cables used for the conveyance of energy and/or signals.

EN 50399 details the apparatus for the fire propagation testing and the arrangement and calibration of the

instrumentation to be installed in order to measure the heat release and the smoke production during the

test. The combustion gases are collected in a hood above the test chamber and conveyed through an

exhaust system, which allows the measurement of heat release rate and smoke production. Test

procedures to be used for type approval testing for classification of cables in classes [2, 6] B1ca, B2ca, Cca

and Dca are given. Cable installation on the test ladder and the volume of air passing through the chamber

are in accordance with the Commission Decision 2006/751/EC [5], which is reflected in the requirements

of this standard.