Gotham 8 A Open Reflector SpecSheet User Manual
Page 3
© 2009-2013 Acuity Brands Lighting, Inc. All Rights Reserved. Rev. 07/01/13. Specifications subject to change without notice.
PAGE 3 OF 3
A-8-OPEN
A 8AR (150 A21)
(1) 150A LAMP, 2780 RATED LUMENS, 1.2 S/MH, TEST NO. LTL7618
A 8AR (200 A23)
(1) 200A LAMP, 3930 RATED LUMENS, 1.1 S/MH, TEST NO. LTL8058
A 8AR (300 PS25)
(1) 300PS LAMP, 6200 RATED LUMENS, 1.1 S/MH, TEST NO. LTL7631
A 8MB (150 A21)
(1) 150A LAMP, 2780 RATED LUMENS, 1.3 S/MH, TEST NO. LTL7616
PH
OTO
M
ET
RY
Distribution Curve
Distribution Data
Output Data
Coefficient of Utilization
Illuminance: Single Luminaire 30” Above Floor
8” A
Open Reflector
A21, A23 or PS25 Lamp
From 0°
cp. Lumens
0°
4193
0
5°
4115 386
15° 3780 1074
25° 3646 1626
35° 1709 1067
45°
178
185
55°
13
14
65°
3
3
75°
0
0
85°
0
0
90°
0
0
ρf
20%
ρc
80%
70%
50%
ρw 50% 30% 50% 30% 50% 30%
1 78 76 76 75 73 72
2 72 70 71 69 69 67
3 67 64 66 63 65 62
4 63 59 62 59 61 58
5 59 55 58 54 57 54
6 55 51 55 51 53 50
7 52 47 51 47 50 47
8 49 44 48 44 47 44
9 46 42 45 41 45 41
10 43 39 43 39 42 39
Zone Lumens %lamp
0°-30° 3086
49.8
0°-40° 4154
67.0
0°-60° 4352
70.2
0°-90° 4355
70.2
90°-180° 0
0.0
0°-180° 4355
70.2*
*Efficiency
50%
10%
beam angle 58.2°
beam angle 77.7°
Initial fc
fc at
fc at
Mount at beam
Beam beam
Beam beam
height center
diameter edge
diameter edge
8'
138.6
6.1' 69.3
8.8' 13.9
10'
74.5
8.4' 37.3
12.0'
7.5
12'
46.5
10.6' 23.2
15.2'
4.6
14'
31.7
12.8' 15.9
18.4'
3.2
16'
23.0
15.1' 11.5
21.6'
2.3
840
1680
2520
3360
4200
90
o
45
o
0
o
ρf
20%
ρc
80%
70%
50%
ρw 50% 30% 50% 30% 50% 30%
1 78 77 77 75 74 73
2 73 70 72 69 69 67
3 68 65 67 64 65 63
4 64 60 63 59 61 58
5 60 56 59 55 58 54
6 56 52 55 51 54 51
7 52 48 52 48 51 48
8 49 45 49 45 48 45
9 47 42 46 42 46 42
10 44 40 44 40 43 39
Zone Lumens %lamp
0°-30° 2023 51.5
0°-40° 2663 67.8
0°-60° 2775 70.6
0°-90° 2776 70.6
90°-180° 0
0.0
0°-180° 2776 70.6*
*Efficiency
50%
10%
beam angle 56.1° beam angle 75.9°
Initial fc
fc at
fc at
Mount at beam
Beam beam
Beam beam
height center
diameter edge
diameter edge
8'
95.7
5.9' 47.9
8.6'
9.6
10'
51.5
8.0' 25.7
11.7'
5.1
12'
32.1
10.1' 16.0
14.8'
3.2
14'
21.9
12.3' 10.9
18.0'
2.2
16'
15.9
14.4'
7.9
21.1'
1.6
From 0°
cp. Lumens
0°
2895
0
5°
2845 266
15° 2502 713
25° 2346 1043
35° 1001 640
45°
96
104
55°
7
8
65°
0
1
75°
0
0
85°
0
0
90°
0
0
600
1200
1800
2400
3200
90
o
45
o
0
o
From 0°
cp. Lumens
0°
1535
0
5°
1576 151
15° 1637 463
25° 1547 697
35°
852
511
45°
78
85
55°
2
3
65°
0
0
75°
0
0
85°
0
0
90°
0
0
ρf
20%
ρc
80%
70%
50%
ρw 50% 30% 50% 30% 50% 30%
1 76 74 75 73 72 71
2 71 68 70 67 67 65
3 66 62 65 62 63 60
4 61 57 61 57 59 56
5 57 53 57 53 55 52
6 54 49 53 49 52 48
7 50 46 50 46 49 45
8 47 43 47 43 46 42
9 44 40 44 40 43 40
10 42 37 41 37 41 37
Zone Lumens %lamp
0°-30° 1311
47.2
0°-40° 1822
65.6
0°-60° 1911
68.7
0°-90° 1911
68.7
90°-180° 0
0.0
0°-180° 1911
68.7*
*Efficiency
50%
10%
beam angle 61.9°
beam angle 80.0°
Initial fc
fc at
fc at
Mount at beam
Beam beam
Beam beam
height center
diameter edge
diameter edge
8'
50.7
6.6' 25.3
9.2'
5.1
10'
27.3
9.0' 13.6
12.6'
2.7
12'
17.0
11.4'
8.5
15.9'
1.7
14'
11.6
13.8'
5.8
19.3'
1.2
16'
8.4
16.2'
4.2
22.7'
0.8
340
680
1020
1360
1700
90
o
45
o
0
o
ρf
20%
ρc
80%
70%
50%
ρw 50% 30% 50% 30% 50% 30%
1 60 59 59 58 57 56
2 56 53 55 53 53 51
3 52 49 51 48 49 47
4 48 44 47 44 46 43
5 44 41 44 40 43 40
6 41 37 41 37 40 37
7 38 35 38 34 37 34
8 36 32 35 32 35 31
9 33 30 33 30 32 29
10 31 28 31 27 30 27
Zone Lumens %lamp
0°-30° 917
33.0
0°-40° 1349 48.5
0°-60° 1509 54.3
0°-90° 1529 55.0
90°-180° 0
0.0
0°-180° 1529 55.0*
*Efficiency
50%
10%
beam angle 65.8° beam angle 86.8°
Initial fc
fc at
fc at
Mount at beam
Beam beam
Beam beam
height center
diameter edge
diameter edge
8'
32.2
7.1' 16.1
10.4'
3.2
10'
17.3
9.7'
8.7
14.1'
1.7
12'
10.8
12.3'
5.4
17.9'
1.1
14'
7.4
14.9'
3.7
21.7'
0.7
16'
5.3
17.4'
2.7
25.5'
0.5
From 0°
cp. Lumens
0°
975
0
5°
989
95
15° 1076 306
25° 1148 516
35°
700 432
45°
179 143
55°
17
17
65°
19
18
75°
0
2
85°
0
0
90°
0
0
240
480
720
960
1200
90
o
45
o
0
o
PHOTOMETRY NOTES
•
Tested to current IES and NEMA standards under stabilized laboratory conditions.
•
Actual performance may differ as a result of end-user environment and application.
•
Consult factory or IES file for microgroove baffle, black cone or other photometric reports.