Case Study: 150W HPS Comparison
Case Study: 400W HPS Comparison
Comparing a 400W HPS to a LEDLUME 3 streetlight installation
Comparing a 150W HPS to a LEDLUME 1 streetlight installation
Specifications Road: A2 classified road + 2.5m setback Luminaire spacing: 44m Road width: 33m (4 x 3.5m lanes either side of 5m median) Height: 12m
Specifications Road: B1 classified road + 2m setback Luminaire spacing: 47m Road width: 7m + 2*2m sidewalks Height: 7m
The LE DLUME 3 provides a 52% energy saving compared to a 400W high-pressure sodium luminaire, while fully meeting the road light level requirements. Furthermore, a much better colour rendering index is provided, thereby enhancing the safety and visibility of pedestrians and road users.
The LED LUME 1 provides a 76% energy saving compared to a 150W high-pressure sodium luminaire, while fully meeting the road light level requirements. Furthermore, a much better colour rendering index is provided, thereby enhancing the safety and visibility of pedestrians and road users.
Luminaire fitted with 150W High-Pressure Sodium Lamp
Luminaire fitted with 400W High-Pressure Sodium Lamp
L EDLUME 1 24 LED
A2 Requirements (with median 600)
L EDLUME 3 96 LED
Luminaire power consumption Spacing between luminaires
Luminaire power consumption
179W
76W
-
430W x 2
174W x 2
Energy Savings
Energy Savings
Spacing between luminaires
27m
47m
-
27m
44m
150W HPS/E
400W HPS/E
LEDLUME 1
LEDLUME 3
Average illuminance sidewalk left
17lx
15.7lx
At least 1.0 cd/m 2
2.15 cd/m 2
1.09 cd/m 2
Average luminance
Minimum sidewalk left
6.1lx
2.5lx
100%
100%
58% Energy Savings (*)
60% Energy Savings (*)
Global uniformity - U 0
40%
40%
40%
Average illuminance lanes
12.4lx
12.5lx
Longitudinal uniformity - U l
Minimum sidewalk lanes
6.2lx
2.7lx
60%
93%
73%
Average illuminance sidewalk right
5lx
5lx
42% 76W
40% 174W
Less than 20%
7.7%
5.2%
Glare - TI
Minimum sidewalk right
3.7lx
1.9lx
Power consumption per km
430W
15312W
179W
-
31820W
Power consumption per km
1596W
6623W
(*) Optic 5424, optimised design based on specifications. Additional savings can be generated by integrating Schréder EXEDRA smart control systems.
(*) Optic 5428, optimised design based on specifications. Additional savings can be generated by integrating Schréder EXEDRA smart control systems.
52%
Percentage saving per km
Percentage saving per km
76%
Please note: Detail on lighting design comparison available on request.
Please note: Detail on lighting design comparison available on request.
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