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Philips 144758 Operating Instructions page 2

Pulse start horizontal metal halide 400watt lamp (clear)

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(Subject to change without notice)
1) Approximate lumen values listed are for horizontal operation of the lamp.
2) Measured at 100 hours of life in horizontal position.
3) Measured at rated lamps on a linear reactor. LPW does not include ballast losses.
4) Approximate lumen output at 40% of lamp rated average life.
5) Rated average life is the life obtained, on the average, from large representative groups of lamps in laboratory tests under controlled conditions at 10 or more operating hours per start.
It is based on survival of at least 50% of the lamps and allows for individual lamps or groups of lamps to vary considerably from the average.
6) Measured with the lamp operation at rated watts.

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