EN 60332­1­2 and EN 60332­3­24 Vertical Flame Propagation Test Apparatuses


According to EN 45545­2, the fire behaviour and the flame impingement duration of cables should be tested and evaluated in respect to the diameter of the cables in question.


In addition, these cables are separated into two groups: I. Cables for Interior (Requirement category R15)


II. Cables for Exterior (Requirement category R16)


Table 6: Flame Impingement related to the Outer Cable Diameter Outer diameter D of specimen (mm)


D ≤ 25


25 < D ≤ 50 50 < D ≤ 75 D > 75


Table 7: Requirements concerning Electric Cables Requirement set Test method


R15, R16 EN 60332­1­2 EN 60332­3­24 (for d ≥ 12mm)


EN 60332­3­24 (for 6mm < d < 12mm) EN 60332­3­24 (for d ≤ 6mm)


Flame impingement(s) 60


120 240 480


For both interior and exterior cable products, the vertical flame spread is tested to EN 60332­1­2 and EN 60332­3­24. The pass / fail criteria are the same for both interior and exterior cables for all three hazard levels. EN 60332­1­2 is used as a preliminary test for all vertically mounted single cables and EN 60332­3­24 is used for testing vertically mounted bunched cables.


Test parameter HL1


Unburned length [mm] Flame propagation [m]


Minimum threshold HL2


HL3


Burned part ≤ 540 and unburned part > 50 2.5 2.5 1.5


Figure 9: FTT EN 60332­3 Vertical Flame Propagation Test for vertically mounted bunched cables


FIRE TESTING TECHNOLOGY


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