MasterColor® Metal Halide
70W ED-17 4K (Coated)
Featuring ALTO® Lamp Technology
◗ O rdering Inform ation
Ordering Code
ANSI Designation
Product Number
Description
MHC70/C/U/M/4K/ALTO
M143/M98/E
281337
MasterColor Metal Halide
12
Package Quantity
◗ Physical Characteristics
Bulb Size
Bulb Finish
57/16"
ED-17
Phosphor-Coated
Medium-Screw
5 7/16'' (138mm)
3 7/16'' (87mm)
0.354'' (9mm)
Poly Crystalline Alumina
400ºC (752ºF)
190º C (374º F)
3º
Base
Max. Overall Length (MOL)
Light Center Length (LCL)
Arc Length
37/16"
Arc Tube Material
Max. Permissible Bulb Temp.
Max. Permissible Base Temp.
Max. Bulb to Base Eccentricity
Max.Arc Tube to Base Eccentricity
3º
◗ O perating Characteristics (Photom etric)
Rated Initial Lumens1
5500
MasterColor® Spectral Power Distribution—4KTypes
350
300
250
200
150
100
50
Mean Lumens,Approx.2
Rated Average Life, Hours
Correlated Color Temp. (CCT)2
CIE Chromaticity Approx.2
Color Rendering Index (CRI)
Efficacy (lpw)
3850
20,000
4000K
x-.380, y-.375
92
79
0
400
450
500
550
600
650
700
◗ O perating Position
WAVELENGTH (Nanom eters)
Universal—Enclosed Luminaires Only
Note: Electronic ballasts are preferred for optimum performance,
energy efficiency and circuit loading.
Average Lum en Maintenance Curve, MHC70/U/M/4K
Clear and Coated
100
90
80
70
60
50
40
0
5000
10000
15000
20000
Burning Hours
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