Technical Specifications

2 G R 8
ADF012708
Customer First Center 1121 Highway 74 South Peachtree City, GA 30269 770.486.4800 FAX [phone]
Visit our web site at www.cooperlighting.com
P H O T O M E T R I C S
C o e f f i c i e n t s o f U t i l i z a t i o n
Effective floor cavity reflectance 20%
rc 80% 70% 50% 30% 10% 0%
rw 70 50 30 10 70 50 30 10 50 30 10 50 30 10 50 30 10 0
RCR
0
1
2
3
4
5
6
7
8
9
10
Z o n a l L u m e n S u m m a r y
Zone Lumens %Lamp %Fixture
0-30
0-40
0-60
0-90
0-180
C a n d e l a
Angle Along II 45° Across ⊥
0
5
10
15
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
2GR8-332A
Electronic Ballast
(3) F28T8 lamps
3100 lumens
Spacing criterion:
(II) 1.2 x mounting
height, (⊥) 1.4 x
mounting height
Efficiency 77.6%
Test Report:
2GR8-332A.IES
LER = FL-75
Yearly Cost of 1000
lumens, 3000 hrs at
.08 KWH = $3.20
2717 2717 2717
2719 2706 2716
2684 2685 2708
2622 2648 2691
2537 2592 2655
2419 2510 2594
2276 2400 2503
2101 2256 2383
1888 2059 2225
1630 1808 1991
1342 1537 1688
1082 1248 1345
847 928 1011
640 632 731
471 405 527
333 271 394
237 206 295
127 127 169
12 25 36
92 92 92 92 90 90 90 90 86 86 86 82 82 82 79 79 79 78
85 81 78 75 83 80 77 74 76 74 72 73 71 70 70 69 67 66
78 72 67 62 76 70 65 62 67 63 60 65 62 59 62 60 57 56
71 63 57 52 69 62 56 52 60 55 51 58 54 50 56 52 49 48
65 56 50 45 64 55 49 45 53 48 44 52 47 43 50 46 43 41
60 51 44 39 59 50 43 39 48 43 38 47 42 38 45 41 37 36
56 46 39 34 54 45 39 34 44 38 34 42 37 33 41 37 33 32
52 41 35 30 50 41 35 30 40 34 30 39 33 30 38 33 29 28
48 38 31 27 47 37 31 27 36 31 27 35 30 27 34 30 26 25
45 35 29 24 44 34 28 24 33 28 24 33 28 24 32 27 24 23
42 32 26 22 41 32 26 22 31 26 22 30 25 22 30 25 22 20
2162 23.2 30.0
3564 38.3 49.4
6046 65.0 83.8
7213 77.6 100.0
7213 77.6 100.0
L u m i n a n c e D a t a
Average Average Average
Angle 0-Deg 45-Deg 90-Deg
in Deg cd/sm cd/sm cd/sm
45 3697 4101 4516
55 3026 3490 3761
65 2429 2399 2774
75 2064 1679 2442
85 2337 2337 3110