Technical Information Halogen Studio Lamp single ended No. DO 5348 Edition: 09/05 - subject to change 93728 LL HPL Supersedes: Status: valid Product Description The OSRAM HPL 575W LL is the new LONGLIFE version (1500h) of the Halogen High Performance Lamp (HPL), which is manufactured under the licence of ENTERTEC Inc., L.A./USA. The particular arrangement of the filaments is designed for optimum performance in luminaries of the "Source Four" family from ETC. d Technical Data Lamp / order reference 93728 LL HPL ANSI HPL 575 LL Rated wattage W 575 Operating voltage V 230 Rated current A 2,5 Luminous flux lm 11.780 Luminous efficacy lm/W 21 Colour temperature K 3.050 Bulb diameter d mm 19 Length l1 mm 104 LCL a mm 60,3 Luminous area b x h mm 14,5 x 11 Average service life h 1500 Filament type 6C-8 Base G 9,5 special (with heat sink) Lamp operation Maximum base temperature allowed °C 350 Cooling convection Fusing 6,3 A Operating position any Display/Optic Berlin l a 1