Technical Specifications
Photometrics
30
FOOTNOTES:
1
Lumen maintenance is based on lamp manufacturer's stated data combined with estimated dirt depreciation.
2
Design System Lumens is the fixture lumens at 40% of rated lamp life and is
calculated as Quantity of Lamps x Lamp Lumens x Lumen Maintenance x Fixture Efficiency x Ballast Factor.
3
S/P Ratio is the lamp manufacturers stated Scotopic/Photopic Ratio; accepted by some lighting
designers to adjust for the relative strengths of scotopic and photopic vision, not yet adopted by IESNA.
4
S/P Adjusted Lumens calculates the brightness perception scotopic/photopic ratio as Design System
Lumens x (S/P)^.0.5
5
LER (Luminaire Efficiency Ratio) is an accepted method of comparing fixture performance.
System Performance Table
Cost of
1000 S/P
Adj Lmns -
4000 hrs
$0.08 kWh
Design S/P
No. of Lamp Lumen Fixture Ballast System S/P Brightness Adjusted
HBL T8 System Comparison Lamps Lumens Maintenance
1
Efficiency Factor Lumens
2
Ratio
3
Perception Lumens
4
Wattage LER
5
HBL-454T5-N-UPL 4 5000 93% 95% 1.00 17670 1.72 1.31 23174 240 $3.39 96
HBL-654T5-N-UPL 6 5000 93% 97% 1.00 27063 1.90 1.38 37304 360 $3.06 103
HBL-854T5-N-UPL 8 5000 93% 94% 1.00 34968 1.90 1.38 48200 480 $3.23 100
Comparison System
250W Metal Halide High Bay 1 23000 75% 78% 1.00 15000 1.50 1.22 18371 295 $6.59 49
250W High Pressure Sodium High Bay 1 30000 81% 78% 1.00 18978 0.67 0.73 13887 300 $8.85 36
400W Metal Halide High Bay 1 36000 75% 78% 1.00 21087 1.50 1.22 25826 455 $7.22 44
400W High Pressure Sodium High Bay 1 50000 81% 78% 1.00 31631 0.62 0.79 24906 464 $7.63 42
1000W Metal Halide High Bay 1 110000 45% 70% 1.00 36083 1.50 1.22 44192 1085 $5.70 56
1000W High Pressure Sodium High Bay 1 130000 45% 70% 1.00 40950 0.62 0.79 32244 1100 $1560 21
HBL-654T5-N-UPL
Narrow Distribution
(2) Electronic Ballasts
(6) F54T5 54W lamps 4400 lumens
Spacing criterion: (II) 1.2 x mounting
height, (⊥) 0.9 x mounting height
Efficiency 97.0%
Test Report: HBL654NUPL.IES
HBL-654T5-W-UPL
Wide Distribution
(2) Electronic Ballasts
(6) F54T5 54W lamps 4400 lumens
Spacing criterion: (II) 1.3 x mounting
height, (⊥) 1.3 x mounting height
Efficiency 93.3%
Test Report: HBL654WUPL.IES
C o ef f i ci e n ts o f U ti l i za t i on
Effective floor cavity reflectance 20%
rc 80% 50% 30%
rw 70 50 30 10 50 30 10 50 30 10
RCR
0
1
2
3
4
5
6
7
8
9
10
Z o na l L um e n S um m a ry
Zone Lumens %Lamp %Fixture
0-30
0-40
0-60
0-90
0-180
114 114 114 114 103 103 103 97 97 97
104 99 95 92 91 88 85 86 83 81
95 87 80 75 80 75 71 75 71 68
86 77 69 63 70 64 60 67 62 58
79 68 60 54 63 56 51 60 54 50
73 61 53 46 57 50 45 54 48 43
68 55 47 41 51 44 39 49 43 38
63 50 42 36 47 40 35 45 39 34
59 46 38 33 43 36 32 41 35 31
55 42 35 29 40 33 29 38 32 28
52 39 32 27 37 31 26 36 30 26
7354 27.9 28.7
11251 42.6 43.9
18573 70.4 72.5
23479 88.9 91.6
25621 97.0 100.0
C o ef f i ci e n ts o f U ti l i za t i on
Effective floor cavity reflectance 20%
rc 80% 50% 30%
rw 70 50 30 10 50 30 10 50 30 10
RCR
0
1
2
3
4
5
6
7
8
9
10
Z o na l L um e n S um m a ry
Zone Lumens %Lamp %Fixture
0-30
0-40
0-60
0-90
0-180
109 109 109 109 98 98 98 92 92 92
99 94 90 86 85 82 79 80 77 75
89 81 74 69 74 69 64 69 65 61
81 71 63 57 64 58 53 60 55 51
74 62 54 47 57 50 45 53 48 43
68 55 47 40 51 44 38 48 42 37
62 50 41 35 46 39 33 43 37 32
58 45 37 31 41 34 29 39 33 29
54 41 33 27 38 31 26 36 30 25
50 37 30 24 35 28 23 33 27 23
47 34 27 22 32 26 21 30 25 21
5401 20.5 21.9
8947 33.9 36.3
16453 62.3 66.8
22065 83.6 89.6
24626 93.3 100.0
HBL-854T5-N-UPL
Narrow Distribution
(2) Electronic Ballasts
(8) F54T5 54W lamps 4400 lumens
Spacing criterion: (II) 1.3 x mounting
height, (⊥) 1.2 x mounting height
Efficiency 94.0%
Test Report: HBL854NUPL.IES
HBL-854T5-M-UPL
Medium Distribution
(2) Electronic Ballasts
(8) F54T5 54W lamps 4400 lumens
Spacing criterion: (II) 1.3 x mounting
height, (⊥) 1.7 x mounting height
Efficiency 94.1%
Test Report: HBL854MUPL.IES
C o ef f i ci e n ts o f U ti l i za t i on
Effective floor cavity reflectance 20%
rc 80% 50% 30%
rw 70 50 30 10 50 30 10 50 30 10
RCR
0
1
2
3
4
5
6
7
8
9
10
Z o na l L um e n S um m a ry
Zone Lumens %Lamp %Fixture
0-30
0-40
0-60
0-90
0-180
110 110 110 110 101 101 101 95 95 95
100 95 91 87 87 84 82 83 80 78
91 83 76 71 76 71 67 72 68 64
83 73 65 59 67 61 56 64 59 54
76 65 56 50 60 53 48 57 51 46
70 58 49 43 54 47 41 51 45 40
65 52 44 38 48 42 36 46 40 36
60 47 39 33 44 37 32 42 36 32
56 43 35 30 41 34 29 39 33 28
52 40 32 27 37 31 26 36 30 26
49 37 29 24 35 28 24 33 27 23
8780 24.9 26.5
13886 39.4 42.0
23440 66.6 70.8
30822 87.6 93.1
33096 94.0 100.0
C o ef f i ci e n ts o f U ti l i za t i on
Effective floor cavity reflectance 20%
rc 80% 50% 30%
rw 70 50 30 10 50 30 10 50 30 10
RCR
0
1
2
3
4
5
6
7
8
9
10
Z o na l L um e n S um m a ry
Zone Lumens %Lamp %Fixture
0-30
0-40
0-60
0-90
0-180
110 110 110 110 101 101 101 95 95 95
100 95 91 87 87 83 81 82 79 77
90 82 75 69 75 70 65 71 66 63
82 71 63 57 65 59 54 62 56 52
74 63 54 47 57 51 45 54 49 44
68 56 47 40 51 44 39 49 42 37
63 50 41 35 46 39 33 44 37 33
58 45 36 30 42 34 29 40 33 29
54 41 32 27 38 31 26 36 30 25
50 37 29 24 35 28 23 33 27 23
47 34 26 21 32 25 21 31 25 20
6859 19.5 20.7
12020 34.1 36.3
22731 64.6 68.6
30614 87.0 92.4
33127 94.1 100.0
Illuminance Estimator
Choose the spacing and mounting height to determine the average footcandle and
watts per square foot values. All the calculations are based on the published IESNA
Zonal Cavity Method and associated algorithms. Results are calculated from
manufacturer photometric files.
Illuminance Levels (FC) & Watts Per Sq. Ft. (LPD)
Based on 100 ft. x 100 ft. Open Room
HBL654NUPL
Spacing
15 ft 20 ft 25 ft 30 ft
on Center Qty FC LPD Qty FC LPD Qty FC LPD Qty FC LPD
20 ft 49 83.0 1.76 25 42.2 0.90 16 27.0 0.57 12 20.2 0.43
25 ft 49 77.0 1.76 25 39.1 0.90 16 25.0 0.57 12 18.8 0.43
30 ft 49 71.0 1.76 25 36.3 0.90 16 23.2 0.57 12 17.4 0.43
Mounting
Height