Cut Sheet

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®
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Open Space
Spacing Lumens Wattage LPW w/ft
2
Average FC
4 x 4
750 9 83
0.54 41
6 x 6 0.25 19
8 x 8 0.14 10
10 x 10 0.09 7
10' Ceiling, 80/50/20 Reflectances, 2.5' workplane, open room. LLF: 1.0 Initial. Open Space: 50' x 40' x 10'
Corridor
Spacing Lumens Wattage LPW w/ft
2
Average FC
4' on Center
750 9 83
0.38 16
6' on Center 0.26 11
8' on Center 0.18 8
10' on Center 0.15 6
10' Ceiling, 80/50/20 Reflectances, 2.5' workplane, open room. LLF: 1.0 Initial. Corridor: 6' x 100' x 10'
Application Reference
DS4 LED Surface Mount Disk Light – 4"
Product Specifications
CONSTRUCTION & MATERIALS
• Durable aluminum housing protects LEDs and power supply
• Mounts to 4" square, octagonal and round surface mounted junction
boxes
• For recessed can compatibility (need accessory kit), designed to easily
install in standard 4" (102mm) downlight housings with a diameter of
4.0" - 4.1" (102mm - 104mm)
• Quick install system (need accessory kit) utilizes a unique retention
feature. Simply attach socket to the disk light. Move light to ready
position and slide into housing.
• Thermal management system uses lower reflector to conduct heat away
from LEDs and transfer it to the plenum space for optimal performance.
LED junction temperatures stay below specified maximum
• Suitable for insulated and non-insulated ceilings
OPTICAL SYSTEM
• Unique combination of reflective and refractive optical components
achieves a uniform, comfortable appearance while eliminating pixelation
and color fringing. This ensures smooth light patterns are projected with
no hot spots and minimal striations
• Diffusing polycarbonate lens shields direct view of LEDs while lower
reflector balances brightness of lens with the ceiling to create a
low-glare high angle appearance
ELECTRICAL SYSTEM
• Integral, high-efficiency power supply
• Power Factor: > 0.9
• Total Harmonic Distortion: < 20%
• Input Voltage: 120V, 50/60Hz
• Dimming: Dimmable to 5% with select incandescent dimmers. Forward
phase (triac) and reverse phase dimming only. Reference
http://lighting.cree.com/products/indoor/retrofit-downlights/
dds-series-1 for recommended dimmers for recommended dimmers
• Use only lighting controls with neutral connection or controls intended
for use with LED fixtures
• Operating Temperature Range: -30˚C through +45˚C (-22˚F through
+113˚F)
REGULATORY & VOLUNTARY QUALIFICATIONS
• cULus Classified
• Suitable for wet locations for covered ceilings only
• ENERGY STAR
®
certified: Please refer to
www.energystar.gov/productfinder/product/certified-light-bulbs/results
for most current information
• Meets FCC Part 15, Subpart B, Class B standards for conducted and
radiated emissions
• RoHS Compliant. Consult factory for additional details
• CEC California Title 24 Compliant
• CA RESIDENTS WARNING: Cancer and Reproductive Harm –
www.p65warnings.ca.gov
Reference http://lighting.cree.com/products/indoor/
retrofit-downlights/ds-series for detailed photometric data
Zonal Lumen Summary
Zone Lumens % Lamp Luminaire
0-30 201 N/A 25.2%
0-40 331 N/A 41.5%
0-60 597 N/A 74.8%
0-90 794 N/A 99.5%
0-180 799 N/A 100.0%
Average Luminance Table (cd/m
2
)
Vertical Angle
Horizontal Angle
0˚ 45˚ 90˚
45˚ 47,128 47,128 47,128
55˚ 46,625 46,625 46,625
65˚ 45,841 45,841 45,841
75˚ 45,225 45,225 45,225
85˚ 53,622 53,622 53,622
Coefficients Of Utilization –
Zonal Cavity Method
RC %: 80
RW %: 70 50 30 10
RCR: 0 119 119 119 119
1 108 102 98 93
2 97 89 81 75
3 88 77 69 62
4 81 68 59 52
5 74 61 52 45
6 68 55 45 39
7 63 50 41 34
8 59 45 36 30
9 55 41 33 27
10 52 38 30 25
Effective Floor Cavity Reflectance:20%
Photometry
DS4-750L-30K-U1 BASED ON CESTL REPORT TEST #: PL11982001A
Luminaire photometry has been conducted by a NVLAP accredited testing laboratory
in accordance with IESNA LM-79-08. IESNA LM-79-08 specifies the entire luminaire as
the source resulting in a luminaire efficiency of 100%.
0˚ 20˚
50˚
70˚
90˚
64
0
257
129
193
0˚ 90˚