174
The Lighting Handbook
Fire protection
Luminaires marked with U
This symbol indicates the surface tempera-
ture luminaire. They are
designed that the event ballast
fault, flame-retardant and normally flamma-
ble materials specified DIN 4102 cannot
be ignited, e. period transition was agreed that
allowed the mark applied until
01/08/2005. vertical surfaces, 150 °C
must not exceeded.
The luminaire mark was withdrawn in
1999.
The Umark limits the temperature to
90°C max. Since 01/08/1998, theUmark
introduced 60598 has been applied. The materials may painted, veneer
ed
or varnished.
Luminaires with theQmark
Luminaires which carry theQmark are
intend
ed for installation furniture. They are designed that normal
operation any mounting surface other
adjacent furniture surfaces not exceed a
temperature °C. corners wooden furni-
ture.g. horizontal surfaces during
normal operation and 115 the event
of ballast fault.
Luminaire identification marking
The following criteria must taken into account:
– position normal use
– fire behaviour environment and mounting surfaces
– minimum clearance from combustible substances and materials
. External surfaces where
highly flammable materials such dust
or fibres may accumulate, even case of
use according purpose, must not exceed
specific temperatures.
Luminaires with theqmark
Luminaires which carry theqmark are
intend
ed for mounting furniture
made materials whose flammability not
known
