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7

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16

"

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

Max. Arc Tube to Base Eccentricity

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

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