3
7
/
16
"
5
7
/
16
"
MasterColor
®
Metal Halide
70W ED-17 4K (Coated)
Featuring ALTO
®
Lamp Technology
◗
Ordering Information
Ordering Code
MHC70/C/U/M/4K/ALTO
ANSI Designation
M143/M98/E
Product Number
281337
Description
MasterColor Metal Halide
Package Quantity
12
◗
Physical Characteristics
Bulb Size
ED-17
Bulb Finish
Phosphor-Coated
Base
Medium-Screw
Max. Overall Length (MOL)
5 7/16'' (138mm)
Light Center Length (LCL)
3 7/16'' (87mm)
Arc Length
0.354'' (9mm)
Arc Tube Material
Poly Crystalline Alumina
Max. Permissible Bulb Temp.
400ºC (752ºF)
Max. Permissible Base Temp.
190º C (374º F)
Max. Bulb to Base Eccentricity
3º
Max. Arc Tube to Base Eccentricity
3º
◗
Operating Characteristics (Photometric)
Rated Initial Lumens
1
5500
Mean Lumens, Approx.
2
3850
Rated Average Life, Hours
20,000
Correlated Color Temp. (CCT)
2
4000K
CIE Chromaticity Approx.
2
x-.380, y-.375
Color Rendering Index (CRI)
92
Efficacy (lpw)
79
◗
Operating Position
Universal—Enclosed Luminaires Only
Note: Electronic ballasts are preferred for optimum performance,
energy efficiency and circuit loading.
MasterColor® Spectral Power Distribution—4K Types
RELA
TIVE ENERGY
400
450
500
550
600
650
700
WAVELENGTH (Nanometers)
350
300
250
200
150
100
50
0
40
50
60
70
80
90
100
0
5000
15000
Percent Lumen Maintenance
Burning Hours
Average Lumen Maintenance Curve, MHC70/U/M/4K
Clear and Coated
10000
20000
