[. . . ] www. sylvania. com QUICKTRONIC® PROStart® T5 Universal Voltage Professional Series Lamp / Ballast Guide 28W T5 - PENTRON® 2-lamp QTP2x21T5/UNV PS51-SC Primary Lamp Type: FP21 Also operates: FP14, FP28 2-lamp model operate PENTRON lamps · 36W @ 0. 49 Ballast Factor FP28T5 · 29W @ 0. 51 Ballast Factor FP21T5 · 21W @ 0. 57 Ballast Factor FP14T5 SYLVANIA QUICKTRONIC PS operates PENTRON T5 lamps with optimum energy savings at lower light levels. [. . . ] of Factor System Mean Power Efficacy Lamps (BF) Lumens Lumens (Watts) (lm/W) BEF2 2 2 2 0. 49 0. 51 0. 57 2840 2140 1535 2645 1990 1430 36 29 21 79 74 73 1. 36 1. 76 2. 71 Description QTP2x21T5/UNV PS51-SC 1: At 35°C lamp ambient temperature. 2: Ballast Efficiency Factor (BEF) shown = (Ballast Factor x 100) divided by Input Power (Note: calculation based on lowest wattage value). Installation Notes · Install in accordance with National & Local Electric Code · Ground ballast case Specifications3 Starting Method: Programmed Rapid Start Ballast Factor: 0. 51 Circuit Type: Series Lamp Frequency: >40 kHz Lamp CCF: Less than 1. 6 Starting Temp: 50°F (10°C) min. Input Frequency: 50/60 Hz Low THD: <10% Power Factor: >98% Voltage Range: ±10% of Rated Input UL Listed Class P, Type 1, Outdoor CSA Certified 70°C Max Case Temperature FCC 47CFR Part 18 Non-Consumer Class A Sound Rating ANSI C62. 41 Cat. A Transient Protection Dynamic End-of-Lamp-Life Sensing Remote Mounting (Max. [. . . ] OSRAM SYLVANIA National Customer Service and Sales Center 1-800-LIGHTBULB (1-800-544-4828) www. sylvania. com Item Number QUICKTRONIC PROFESSIONAL Number of Lamps 49187 QTP 2 x 21 T5/UNV PS51 - SC Case Size Starting/Ballast Factor Line Voltage Primary Lamp Wattage 55 Specifications subject to change without notice. [. . . ]