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GE CMH Crisp white light fits existing
HPS sockets
GE CMH
®
LAMPS
A direct replacement for High Pressure Sodium
(HPS) lamps, GE CMH
®
ChromaFit lamps
provide excellent crisp white color without
expensive ballast or fixture changes.
The advantages of metal halide
lighting for HPS users
ChromaFit lamps provide the benefits of metal
halide lighting - crisp white light, improved color
- using existing HPS ballasts and fixtures. GE
CMH
®
ChromaFit lamps are designed to
operate on ANSI standard S50 and S51 ballasts.
Available in 250-watt and 400-watt versions.
Warm white light
ChromaFit lamps provide the crisp white light
typical of metal halide lamps, adding sparkle
and comfort to any setting.
Improved color
With a color rendering index of greater than 80
for the 400 watt and 85 for the 250 watt, CMH
®
ChromaFit is an excellent choice to upgrade
HPS systems for improved color without costly
fixture changes.
Metal halide efficiency
CMH
®
ChromaFit lamps are highly efficient,
providing a minimum 100 lumens per watt of
quality light.
Applications
General Lighting
Industrial Lighting
Parking Lots
Street Lighting
Architectural
Landscape Lighting
GE Consumer & Industrial
Lighting
imagination at work Performance Data
Product
Clear
Clear
Information
250-watt
400-watt
GE Product Code
93357
93295
Refer to ANSI Code
S50
S51
Description CMH250/U/830/R
CMH400/U/830/R
Physical Characteristics
Burning Position
Universal
Universal
Bulb Designation
T15
ED18
Bulb Material
Heat-Resistant Glass
Heat-Resistant Glass
Light Center Length, mm (inches)
146.0 (5.75)
146.0 (5.75)
Maximum Overall Length, mm (inches)
247.6 (9.75)
247.6 (9.75)
Effective Arc Length, mm (inches)
25.7 (1.02)
32.3 (1.28)
Maximum Bulb Temperature °C
400°C
400°C
Maximum Base Temperature °C
250°C
250°C
Luminaire Characteristics Enclosed*
Enclosed*
Electrical Characteristics
Nominal Lamp Watts
250
400
Nominal Lamp Volts
100
95
Nominal Lamp Amps-Operating
2.7
4.0
Photometric Characteristics
Reference
1
-lnitial Lumens
25,000
41,000
Ref.
1
-Mean Lumens
(40% Rated Life) Vert.+ 15°
20,000
31,300
Design Factor
1.0
1.0
Average Rated Life (Hours) 10 Hrs./Start
16,000
20,000
Color Rendering Index (Ra) CRI @ K
2

85 @ 3000K
>80 @ 3000K(H) 3600K(V)
Warm-up Time (Minutes) to 90%
2 to 5
2 to 4
Hot Restart Time (Minutes) to 90%
5 to 15
5 to 15
*Use in enclosed glass lens fixtures only
1 Reference Lumens-Rated average lamp lumen obtained under controlled laboratory
conditions in a prescribed burning position. Initial Reference Lumens refer to the lamp
lumen output after 100-hours burning. Mean Reference Lumens refer to the lamp
lumen output at the mean lumen point during lamp life. The mean lumen point occurs
at 40% rated life for metal halide lamps. Lamp performance on typical systems under
typical service conditions will vary from the reference lumen rating.
2 Lumen Maintenance is measured under specified test conditions at rated lamp watts, for
lamps that have been operated 10 or more burning hours per start. The date on Lumen
Maintenance represents nominal values for Metal Halide Lamps. Lamp
performance on actual systems may vary due to lamp orientation, ambient
temperatures, ballast variations, and other reasons. Mean lumen. are measured at
40% of rated life, at rated lamp watts.
Important Notice: In accordance with Federal Standard 21CFR 1040.3, the following notice
applies to the Multi-Vapor lamps described above.
Warning: This lamp can cause serious skin burn and eye inflammation from shortwave
ultraviolet radiation if outer envelope of the lamp is broken or punctured, and the arc
tube continues to operate. Do not use where people will remain for more than a few
minutes unless adequate shielding or other safety precautions are used. Certain types
of lamps that will automatically be extinguished when the outer envelope is broken or
punctured are commercially available from General Electric Company. These are self-
extinguishing SAF- T-GARD
®
Mercury and Multi-Vapor lamps.
90445 (10.06)
GE ChromaFit Multi-Vapor
®
Lamps
Lumen maintenance CMH400
Lumen maintenance CMH250
0
20
40
60
80
100
0
20
40
60
80
100
Lamp survival
% L
a
mp sur
v
iv
al
Percent of Rated Life
SPECTRAL POWER DISTRIBUTION
Spectral Power Distribution curves are given in the
following diagram
Spectral Power Distribution 3000 K
0
30
40
50
60
70
mW/n
m/1lm
20
10
380 430 480 530
580 630 680
730
0
20
40
60
80
100
0
5
10
15
20
0
20
40
60
80
100
0
3
6
9
12
15
%
I
n
it
ia
l L
u
m
e
n
s
%
I
n
it
ia
l L
u
m
e
n
s
0 3 6 9 12 16
Burning time (thousand hours)
Burning time (thousand hours)