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◗ Ordering Information
Ordering Code MS400/HOR/ED28/PS
ANSI Designation M155/M135/E
Product Number 232538
Description Pulse Start Metal Halide
Package Quantity 12
◗ Physical Characteristics
Bulb Size ED-28
Bulb Finish Clear
Base (Nickel Plated Brass) Mogul-Screw
Maximum Overall Length (MOL) 8 5/16'' (211mm)
Light Center Length (LCL) 5.0'' (127mm)
Arc Length 1.73" (43.9mm)
Arc Tube Material Quartz
Max. Permissible Bulb Temp. 450ºC (842ºF)
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
40,000
Approx. Mean Lumens
1,3,4
28,000
Rated Average Life, Hours
5
20,000
Correlated Color Temp. (CCT)
3
4000K
CIE Chromacity Approx.
3
x-.385, y-.390
Color Rendering Index (CRI) 68
Efficacy (lpw) 100
◗ Operating Position
Horizontal ± 15°—Enclosed Luminaires Only
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 ED-28 Lamp (Clear)
5"
8
5
/16"