Cut Sheet

1
Use occupancy/vacancy sensors
Wasted lighting can account for a majority of a building’s
total energy usage. Lights left on in unoccupied spaces are a
real energy drain. EcoSystem
® ballasts communicate through
the EcoSystem digital link and are the only ballasts that
can connect directly to wired occupancy/vacancy sensors.
Other ballasts and drivers can also utilize wireless or wired
occupancy/vacancy sensors with a QS sensor module.
2
Optimize ballast efficiency
Low standby power: The EcoSystem H-Series ballast offers
extremely low standby power—less than 1 W of power is
used when the light source is off.
Luminous efficacy: With more lamps per ballast, the
required startup power is diffused over multiple lamps,
conserving energy. The luminous efficacy of a 3-lamp 32 W
ballast is an impressive 100 lumens/watt.
3
Know your space
The greatest energy savings can be achieved by deciding
on the perfect number of lumens required for a space,
avoiding over-lighting and wasted energy.
Custom ballast factor: Ballast factor is the percentage
of light output for a given lamp-ballast combination. By
reducing the ballast factor, it is possible to achieve greater
energy savings, meet lumen/foot
2
specifications and even
qualify for the highest levels ofLEED. Custom ballast
factors are available for: EcoSystem H-Series, Hi-lume
®
3D, EcoSystem and EcoSystemcompact.
Additional energy-saving strategies
While it is true that manual dimming of fluorescent lamps and LEDs saves energy, that is only the beginning of
the energy-saving features that Lutron ballasts and drivers offer. Utilize one or more of the following features to
maximize energy efficiency.
•
No detrimental effect on lamp
life or UL listing
•
The ballast’s printed rating and model
number changes to reflect reduced
energy consumption, producing
lower wattage per square foot values
and allowing for more ballasts on
a given circuit
•
Reduces ballast/lamp temperature
Custom ballast factor of 0.55 offers
a maximum light level at 55% of the
nominal lamp output
Custom ballast factor
Personal control
Provide personal choice
and control of light levels to
accommodate different tasks
and activities. Permit control
from multiple locations.
Occupancy/vacancy sensing
Gradually dim lights to a low
level or turn lights off when
space is unoccupied; turn lights
on when someone enters.
Daylight harvesting
Dim electric light or switch
it off during the day to take
advantage of available daylight.
High-end trim
Set the maximum light
level in a space based on
customer preference or
design requirements.
Typical lighting energy savings:
10-20%
1
Typical lighting energy savings:
20-60%
2
Typical lighting energy savings:
25-60%
3
Occupied: On Vacant: Off
Full On Dim
Full On Dim
Energy-saving control strategies
Typical lighting energy savings:
10-20%
4
Max: 100% Max: 80%
80%
1
Galasiu AD, et al. 2007. Energy saving lighting control systems for open-plan offices: A field study. Leukos. 4(1) pg. 7-29.
2
VonNieda B, Maniccia D, & Tweed A. 2000. An analysis of the energy and cost savings potential of occupancy sensors for commercial lighting systems.
Proceedings of the Illuminating Engineering Society. Paper #43.
3
Brambley MR, et al. 2005. Advanced sensors and controls for building applications: Market assessment and potential R&D pathways.
Pacific Northwest National Laboratory: prepared for U.S. Department of Energy.
4
Pacific Gas and Electric Company. 1997. Dimming Controls for Lighting.
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Energy-saving strategies Energy-saving strategies
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® |