The standard values for service illuminance (Em [Lux]), color appearance (F), color rendering group (Ra), and unified glare restriction class (UGRL) according to EN 12464-1 are listed in the table for the various types of interior or activity. The ratings for service illuminance, color rendering group, and direct glare restriction class represent minimum values to be met by the lighting system.


Interiors / Activities

Em[lx]

F

Ra

UGRL

Production plants - with automatic operation

50

ww, nw

20

-

Production plants - requiring some manual control

150

ww, nw

40

28

Production plant with permanently manned workstations

200

ww, nw

80

25

Slab bearings

50

ww, nw

20

-

Furnace

200

ww, nw

20

25

Rolling mill, coiler, shearing / separating sections 300
ww, nw 80
22
Control platforms 300
ww, nw 80
22
Control, metering and monitoring points 500
ww, nw 80
22
Walk-in underfloor duct, conveyor belt, basement, etc. 50
ww, nw 20
-