Technical Information Tungsten Halogen single ended No. DO 5339 Edition: 05/06 - subject to change 64789 (230/240V) Supersedes: / Status: valid Product description The OSRAM 64789 is mainly used for studio and film production. This is a popular lamp and widely fitted into Fresnel luminaires. Technical Data Lamp / order reference 64789 ANSI FKK LIF CP/73 Rated lamp wattage W 2000 Rated lamp voltage V 230/240 Average life-time h 400 Color temperature K 3200 Luminous flux lm 52000 Luminous efficacy lm/W 25.4 Base G38 Diameter d mm 34 + 1 Lamp length L mm 210 max. LCL a mm 127 + 2 Filament dimensions (w x h) mm 20 x 19 Type of coil biplan Lamp operation Max. pinch seal temperature °C 350°C max. Burning position s90 Fuse protection 10A quick Display/Optic Berlin