Philips SOX-E, SOX User Manual
Ideal for roadway lighting, bridge
and tunnel lighting, security lighting,
area floodlighting, railway crossing
lighting and airport lighting
◗ Excellent Energy Efficiency
Up to 180 lumens per watt
◗ Long Life
18,000 hours rated average life
◗Vibration Resistant
Rough service arc tube support system provides
protection against shock and vibration
Low Pressure Sodium Lamps (SOX-E, SOX)
High energy efficiency low pressure sodium lamps
for indoor and outdoor applications
Candlepower Distribution Curves (cd/1000 lm—candelas per 1000 lumens)
180º 150º 150º180º210º
C
120º 240º
C
120º
A-A
CC
B-B
50 cd 50 cd 50 cd
100 cd 100 cd 100 cd
90º
60º
30º0º
B
A
270º
300º
30º0º330º
CC
90º
60º
BA
LOW PRESSURE SODIUM LAMPS (SOX-E AND SOX)
Warm-Up Characteristics Effects of Input Voltage Variations
220
200
180
160
140
120
100
80
Percent of Nominal
60
40
20
0
0 2 4 6 8 10 12 14 16
Lamp Volts
Lamp Current
Minutes – Warm-up Time Percent of Line Volts
Lamp Watts
Light Output
150
140
130
120
110
100
Percent
90
80
70
60
50
90
95 100 105 110
Lamp Volts
Lamp Current
Lamp Watts
Light Output
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