High Level Bays
Photo-electric daylight level control is the only practical
solution for the automatic control of lighting in high bay type
buildings such as factories, workshops and transport premises.
Because the workspace invariably has uniform daylight availability
via roof or side glazing, lighting can be effectively bulk
switched. DEM photo-electric controls automatically switch lights
OFF when the illumination level has reached a preset threshold and
restore lights once daylight has declined. The LC3010A &
LC3020A units are intended for integration with existing contactor
fed lighting schemes whilst the CB series provide additional
features including full status indication and maintenance
facilities in addition to load switching contactors.
Restricted/self resetting override facilities are also provided
for use by staff to allow for out of hours working and to
prevent lights being left on continuously during periods of good
daylight. Both systems operate in conjunction with a remote indoor
Where there is insufficient daylight availability in the building,
time control with restricted/self resetting facilities would
often low occupancy areas where lighting is left on unnecessarily for many hours.
PIR movement controls, reset type pull
cord switches or time delay switches will ensure that lights are
not left on when not required. Selected lights should be left
uncontrolled to make sure that occupants
are not plunged into total darkness.