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Table 4
LFTF Lighting Test Results: F34 T-12 Fixtures
| Lamp
Ballast |
F34T12
M |
F34T12
M |
F34T12
E |
F34T12
E |
F34T12
M |
F34T12
M |
F34T12
E |
| Troffer
Diffuser |
Par
Open |
Std
Pris |
Par
Open |
Std
Pris |
Par-Refl
Open |
Std-Refl
Pris |
Par-Refl
Open |
| Power (Watts)
Day (9 AM - 5 PM) Night (10 PM - 5 AM) Avg (24-hr) |
155.0 157.3 156.3 |
157.7 158.5 158.1 |
117.6 118.3 118.0 |
118.7 118.1 118.5 |
158.6 159.9 159.2 |
156.9 158.6 157.7 |
113.9 114.8 114.4 |
| Illuminance (Decalux)
Day (9 AM - 5 PM) Night (10 PM - 5 AM) Avg (24-hr) |
94.4 49.1 67.0 |
90.0 54.8 69.8 |
74.2 50.3 61.0 |
82.7 53.5 66.7 |
91.1 51.0 67.7 |
98.0 53.3 71.1 |
79.1 47.5 61.1 |
| Efficacy (Decalux/Watt)
Day (9 AM - 5 PM) Night (10 PM - 5 AM) Avg (24-hr) |
75.2 38.6 53.0 |
70.5 42.7 54.5 |
77.9 52.5 63.8 |
86.0 55.7 69.5 |
70.9 39.4 52.5 |
77.2 41.5 55.7 |
87.8 51.1 65.9 |
| Power Quality (Power Factor)
Min Max Avg |
0.93 0.98 0.96 |
0.96 0.98 0.97 |
0.97 0.99 0.98 |
0.97 1.00 0.99 |
0.95 0.98 0.97 |
0.96 0.98 0.97 |
0.98 1.01 1.00 |
| Temperature oC
Bulb Ballast Fixture |
39.3 59.5 27.8 |
40.7 34.2 24.5 |
35.6 38.0 26.8 |
37.1 47.9 27.4 |
44.7 69.6 24.0 |
37.1 47.9 27.4 |
35.1 36.5 27.0 |
1 Magnetic Ballast 3 Magnetic Dimming Ballast 5 Standard Troffer 7 Standard Troffer w/Reflector 9 Tandem-wired 4-lamp Ballast
2 Electronic Ballast 4 Open Parabolic Troffer 6 Parabolic Troffer w/Reflector 8 Prismatic Diffuser 10 Electronic Dimming Ballast