OSRAM PrevaLED Core Z2 - Manual (Page 10)

10
OPTICAL CONSIDERATIONS
2.1.2. Refl ector mounting
The LED modules have a clearly defi ned optical contact
area (OCA) which provides a defi ned surface for attaching
the refl ector. In this confi guration, the mounting and
mechanical support of the refl ector must be ensured by
the luminaire body or by suitable structures for refl ector
mounting.
The following has to be considered when mounting the
refl ector: Due to the “air and creepage distances” speci-
fi ed in the norm (IEC 61347-1/U935, among others), it is
recommended to stay within the OCA values of the corre-
sponding category (see PrevaLED
® datasheet). 3D fi les of
the PrevaLED ® Core Z2 and design support are available
on the homepage www.osram.com/prevaled-core .
Design example: Conference room
The task here is to illuminate a conference room (approx.
5 x 4 m, height 2.8 m) in such a way that a medium illumi-
nance (E
medium
) of 500 lux is achieved on the work plane.
By means of the EULUMDAT fi les provided by the refl ector
manufacturers, lighting design software and an assumed
maintenance factor of 0.69, the following example result is
achieved (calculated in DIALux with a Jordan fl ood refl ector,
article no. 113309010101): Illuminance diagram with 9
PrevaLED
® Core Z2-based luminaires (LEP-2000-xxx-C-Z2):
2.1.3. Lighting design information
Computerized lighting design can be carried out with
free lighting design software such as DIALux and Relux
(
www.dial.de or www.relux.biz ).
Lighting designers can download or request the necessary
numerical luminous intensity distribution curves
(= EULUMDAT fi les in the .ldt format) for PrevaLED
® Core
Z2 with the corresponding refl ector via the web page of
the respective refl ector manufacturer.
Ceiling height: 2800 mm,
Mounting height: 2851 mm
Figures in lux
Exemplary lighting design with 9 x PrevaLED ® Core Z2 2000 lm in a
conference room