®
MasterColor Ceramic Metal Halide 250W
™
HPS-Retro White Horizontal Lamp
®
Featuring ALTO Lamp Technology
Q Ordering Information
Ordering Code
ANSI Designation
Product Number
CDM250S50/HOR/4K/ALTO
Operates on S50/M168/O
14649-8
Description
MasterColor Ceramic
Metal Halide
Package Quantity
12
Q Physical Characteristics
Bulb Size
ED-18
Bulb Finish
Clear
Base
Mogul
Max. Overall Length (MOL)
Light Center Length (LCL)
Arc Length
9 3/4'' (248mm)
5 3/4'' (146mm)
1'' (25.4mm)
Poly Crystalline Alumina
400ºC (752ºF)
210ºC (410ºF)
3º
Arc Tube Material
Max. Permissible Bulb Temp.
Max. Permissible Base Temp.
Max. Bulb to Base Eccentricity
Max.Arc Tube to Base Eccentricity
3º
®
Q Operating Characteristics (Photometric)
MasterColor Spectral Power Distribution—4KTypes
1, 2
Approx. Initial Lumens
Approx. Mean Lumens
Rated Average Life, Hours
Correlated Color Temp. (CCT)
CIE Chromaticity Approx.
20,500
100
90
80
70
60
50
40
30
20
10
0
2, 3
16,400 HOR
20,000 HOR
4000K
x-.378, y-.370
85
4
5
5
Color Rendering Index (CRI)
Efficacy (lpw)
82
400
450
500
550
600
650
700
Wavelength (Nanometers)
Q Operating Position
Horizontal 15º–Open or Enclosed Luminaires. Do not operate in
a vertical position.
CDM 250 S50/V/HOR/4K Lumen Maintenance
Not for use in compact “wall pack” or “flood light” type fixtures.
Maximum temperature limit of outer bulb may be exceeded in these
applications and can lead to premature lamp failure
100%
80%
60%
40%
20%
0%
0
4000
8000
12000
15000
Luminare photometric distributions may be affected due to
differences in arc length vs. HPS lamp arc length.
Burning Hours, Rated Average Life 15,000 Hours
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