THE WILTON-SIERAY 3-80 LANTERN
Details of construction include: aluminium body braced by transverse and longitudinal U channels,
control gear platform completely wired with three sets of "Sieray" long type control gear (choke, power factor capacitor, quick start
transformer and radio suppressor capacitor), three anodized aluminium reflectors of fixed contour, and separate clear "Perspex"
moulded doors. The unit is suitable for pole or spanwire mounting.
For pole mounting the lantern is erected in four simple sections. A robust mild steel frame bracket is bolted in place first,
followed by the control gear platform ready assembled and wired. The anodized aluminium reflectors are then clipped in and held by
turn screws. Finally, the "Perspex" doors are added and secured at the base of the lantern by wing-nuts.
The lantern accommodates three 80-watt "Daylight", "Natural" or "Warm White" fluorescent tubes. A mounting height of 25 ft. is recommended
and a spacing of 40 yards to give 6,000 lumens per 100-ft. linear of road. The ratio of the peak candle power to the average of
the values in all directions downward from the source and lying 30° and 45° from the vertical is less than five.
[Pictured are the Wilton-Sieray 2-40 with cradle bracket, Wilton-Sieray 2-40 Side Entry and Wilton-Sieray 3-80 Lantern.] |