Lighting Systems Silhouette® SB
1BHFPG | -VNJOPVT*OEJSFDU-JHIU5QFS'PPU /PNJOBM 4FDUJPO |
Performance
CANDLEPOWER CURVE
180˚ | 175˚ | 165˚ | 155˚ | 145˚ | 135˚ |
1250 |
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1000 |
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| 125˚ |
750 |
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| 90˚ | 115˚ |
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500 |
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| 105˚ |
250 |
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| 95˚ |
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0 |
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| 90˚ |
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| 85˚ |
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| 75˚ |
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| 65˚ |
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| 55˚ |
0˚ | 5˚ | 15˚ | 25˚ | 35˚ | 45˚ |
REPORT NO: LRL 299-1B
CAT NO: SB24I281WH
LAMPS: 2F28T5
LUMENS: 2900
EFFICIENCY: 82.0%
| CANDLEPOWER |
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| COEFFICIENTS OF UTILIZATION |
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ZONE | 0 | 22 | 45 | 67 | 90 |
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| % EFFECTIVE CEILING CAVITY REFLECTANCE |
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DEG. |
| CANDELAS |
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| 80 |
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| 70 |
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| 50 |
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180 | 1101 | 1101 | 1101 | 1101 | 1101 |
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| WALL REFLECTANCE |
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175 | 1098 | 1105 | 1106 | 1127 | 1125 |
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| 70 | 50 | 30 | 70 | 50 | 30 |
| 50 | 30 | 10 |
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165 | 1077 | 1132 | 1205 | 1308 | 1305 |
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| 0 |
| 79 | 79 | 79 | 69 | 69 | 69 |
| 49 | 49 | 49 |
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155 | 1020 | 1150 | 1288 | 1334 | 1328 | RATIO | 1 |
| 72 | 68 | 65 | 62 | 59 | 57 |
| 42 | 40 | 39 | |||
135 | 746 | 970 | 961 | 1065 | 1083 | 3 |
| 60 | 52 | 47 | 51 | 45 | 41 |
| 32 | 29 | 27 | ||||
145 | 906 | 1120 | 1171 | 1180 | 1191 | CAVITY | 2 |
| 65 | 60 | 55 | 56 | 52 | 48 |
| 37 | 34 | 32 | |||
125 | 602 | 744 | 843 | 947 | 904 | 4 |
| 54 | 46 | 40 | 47 | 40 | 35 |
| 28 | 25 | 22 | ||||
115 | 407 | 528 | 646 | 771 | 814 |
| 5 |
| 50 | 41 | 34 | 43 | 35 | 30 |
| 25 | 22 | 19 | |||
105 | 227 | 353 | 501 | 530 | 533 | ROOM | 6 |
| 45 | 36 | 30 | 39 | 31 | 26 |
| 22 | 19 | 16 | |||
95 | 42 | 115 | 115 | 120 | 120 | 7 |
| 42 | 32 | 26 | 36 | 28 | 23 |
| 20 | 17 | 14 | ||||
90 | 12 | 18 | 27 | 43 | 50 |
| 8 |
| 38 | 29 | 23 | 33 | 25 | 20 |
| 18 | 15 | 12 | |||
85 | 9 | 15 | 30 | 48 | 55 |
| 9 |
| 36 | 26 | 20 | 31 | 23 | 18 |
| 16 | 13 | 11 | |||
75 | 9 | 19 | 42 | 63 | 70 |
| 10 |
| 33 | 24 | 18 | 28 | 21 | 16 |
| 15 | 12 | 9 |
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65 | 9 | 28 | 52 | 72 | 79 |
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| 20% FLOOR CAVITY REFLECTANCE |
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55 | 18 | 24 | 63 | 80 | 85 |
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| DISTRIBUTION |
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45 | 26 | 51 | 61 | 80 | 81 |
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35 | 36 | 60 | 65 | 73 | 74 |
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| Lumens | % Lamp |
| % Luminaire |
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25 | 32 | 55 | 61 | 68 | 68 |
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| 312 |
| 5.4 |
| 6.6 |
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15 | 28 | 57 | 59 | 84 | 87 |
| 4444 |
| 76.6 |
| 93.4 |
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5 | 26 | 36 | 44 | 61 | 82 |
| 4756 |
| 82.0 |
| 100.0 |
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0 | 26 | 26 | 26 | 26 | 26 |
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Calculations are for 28 watt T5 lamps, for 54 watt T5 lamps multiply by 1.7
Quick Calculator and Ceiling Brightness
| 2,000 |
| FOOTCANDLE |
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| 20 | 30 | 50 |
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| 70 | 100 |
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FEET | 1,000 |
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700 |
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SQUARE |
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500 |
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IN | 400 |
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AREA |
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300 |
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ROOM | 200 |
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| 100 |
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| 1 | 2 | 3 | 4 | 5 | 7 | 10 | 20 | 30 | 40 | 50 | 70 | 100 | 200 |
NUMBER OF FIXTURES REQUIRED
1.Find room area on vertical axis.
2.Move across chart to footcandle curve.
3.Move down to horizontal axis and read number of fixtures required.
Suspension Length | 12" | 18" | 24" |
Footlamberts Above Fixture | 216 | 147 | 113 |
Footlamberts Between Fixtures | 24.3 | 26.5 | 30.1 |
Ceiling Brightness Ratio | 8.9 | 5.5 | 3.8 |
Reflectances of 80% ceiling, 50% walls and 20% floor. Light loss factor is .85, Room size is 50' x 50',
Run Spacing 10’. Ceiling Height 9’ to 12’. Values are taken from the center of the room.
Fixture Lengths & Mounting Locations
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| 5/8” (1.59cm) | |
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| 48” (121.92cm) |
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96” (243.84cm)
Sample Run | Cable | |||
Power Feed | Assembly | |||
End Set | 96” (243.84cm) | 48” (121.92cm) | 96” (243.84cm) |
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20’ 1/8” (609.92cm)
Mounting & Joiner Block Accessories
4.6” (11.68cm)
4” (10.16cm)
8” |
(20.32cm) |
4” (10.16cm)
8” (20.32cm) | |
4” (10.16cm) | |
3.4” | 4” |
(8.64cm) | (10.16cm) |
Cable Assembly | Power Feed End Set | “L”Block with Suspension | “X” Block with Suspension | “T” Block with Suspension | ||
SC36 | SE36WH (white) | SL36WH (white) | SX36WH (white) |
| ST36WH (white) | |
| SE36AL (aluminum) | SL36AL (aluminum) | SX36AL (aluminum) |
| ST36AL (aluminum) | |
Inline block available (SI36WH or SI36AL). |
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| Job Information | Type: |
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"JSQPSU3PBE'BMM3JWFS."t t'BY
We reserve the right to change details of design, materials and finish.
XXXMJHIUPMJFSDPN½1IJMJQT(SPVQt #