7"
11
1
/
2
"
◗
Ordering Information
Ordering Code
MS400/BU/PS
ANSI Designation
M135/M128/S
Product Number
278168
Description
Pulse Start Metal Halide
Package Quantity
12
◗
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.
430º C (806º F)
Max. Permissible Base Temp.
210º C (410º F)
Max. Bulb to Base Eccentricity
3º
Max. Arc Tube to Base Eccentricity
3º
◗
Operating Characteristics (Photometric)
Approx. Initial Lumens
1,2
42,600
Approx. Mean Lumens
1,3,4
29,820
Rated Average Life, Hours
5
20,000
Correlated Color Temp. (CCT)
3
4100K
CIE Chromaticity Approx.
3
x-.385, y-.400
Color Rendering Index (CRI)
62
Efficacy (lpw)
106.5
◗
Operating Position
Base Up ± 15º–Open or Enclosed Luminaires Unless Otherwise Noted
Note: Pulse Start Metal Halide is Designed for Operation
on Only Approved Ballasts with Metal Halide Pulse Ignitors.
MS400/BU/PS
Lumen Maintenance
BURNING HOURS
RATED AVERAGE LIFE 20,000 HOURS
100%
90%
80%
70%
60%
50%
40%
0 2000
4000
6000
8000
10000
% LUMEN
MAINTENANCE
Pulse Start Metal Halide
400 Watt Lamp (Clear)
