Technical Information Tungsten Halogen single ended No. DO 5379 Edition: 05/06 - subject to change 64777 (230V) Supersedes: / Status: valid Product description The OSRAM 64777 is mainly used for studio and theatre lighting as well as film production and fitted into Fresnel, Profile, PC Spot and Follow Spot luminaires. Technical Data Lamp / order reference 64777 ANSI - LIF CP/92 Rated lamp wattage W 2000 Rated lamp voltage V 230 Average life-time h 400 Color temperature K 3200 Luminous flux lm 52000 Luminous efficacy lm/W 25.40 Base G22 Diameter d mm 35 max. Lamp length L mm 175 max. LCL a mm 90 + 2 Filament dimensions (wxh) mm 20x19 Type of filament biplan Lamp operation Max. pinch seal t t Burning position Fuse protection Display/Optic Berlin °C 350°C max. s90 10A quick