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7"
11
1
/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)
Arc Tube Material Quartz
Max. Permissible Bulb Temp. 400ºC (752ºF)
Max. Permissible Base Temp. 210ºC (410ºF)
Max. Bulb to Base Eccentricity 3º
Max.Arc Tube to Base Eccentricity 3º
◗ Operating Characteristics (Photometric)
Approx. Initial Lumens
1,2
36,800
Approx. Mean Lumens
1,3,4
25,760
Rated Average Life, Hours
5
15,000
Correlated Color Temp. (CCT)
3
4300K
CIE Chromaticity Approx.
3
x-.380, y-.405
Color Rendering Index (CRI) 62
Efficacy (lpw) 92
◗ Operating Position
Horizontal ± 15º–Enclosed Luminaires
Note: Pulse Start Metal Halide is Designed for Operation
on Only Approved Ballasts with Metal Halide Pulse Ignitors.
Pulse Start Horizontal Metal Halide
400 Watt Lamp (Clear)
MS400/HOR/PS
Lumen Maintenance
BURNING HOURS
RATED AVERAGE LIFE 15,000 HOURS
100%
90%
80%
70%
60%
50%
40%
0 2000 4000 6000 8000
% LUMEN
MAINTENANCE