7"

111/2"

◗Ordering Information

Ordering Code MS400/HOR/PS
ANSI Designation M155/M135/E
Product Number 144758
Description Pulse Start Metal Halide
Package Quantity 6

◗Physical Characteristics

Bulb Size ED-37
Bulb Finish Clear
Base (Nickel Plated Brass) Mogul-Screw
Maximum Overall Length (MOL) 11 1/2'' (292mm)
Light Center Length (LCL) 7.0''(178mm)
Arc Length 1.57'' (40mm)
ArcTube Material Quartz
Max.Permissible Bulb Temp. 400ºC (752ºF)
Max.Permissible Base Temp. 210ºC (410ºF)
Max.Bulb to Base Eccentricity 3º
Max.Arc Tubeto Base Eccentricity 3º

◗Operating Characteristics (Photometric)

Approx.Initial Lumens1,2 36,800
Approx.Mean Lumens1,3,4 25,760
RatedAverage Life,Hours515,000
Correlated Color Temp.(CCT)34300K
CIE Chromaticity Approx.3x-.380,y-.405
Color Rendering Index (CRI) 62
Efficacy (lpw) 92

◗Operating Position

Horizontal ± 15º–Enclosed Luminaires
Note:Pulse Star t Metal Halideis Designedfor Operation
onOnly Approved Ballastswith Metal HalidePulse Ignitors.
Pulse Start Horizontal Metal Halide400 Watt Lamp (Clear)
MS400/HOR/PS
Lumen Maintenance
BURNINGHOURS
RATED AVERAGE LIFE 15,000 HOURS
100%
90%
80%
70%
60%
50%
40%
0 2000 4000 6000 8000
%LUMEN
MAINTENANCE