Philips 278168 Prospecto

7"

11 

1

/

2

"

◗ Ordering Information

Ordering Code

MS400/BU/PS

ANSI Designation

M135/M128/S

Product Number

278168

Description

Pulse Start Metal Halide

Package Quantity

12

◗ Physical Characteristics

Bulb Size

ED-37

Bulb Finish

Clear

Base (Nickel Plated Brass)

Mogul-Screw

Maximum Overall Length (MOL)

11 1/2'' (292mm)

Light Center Length (LCL)

7.0'' (178mm)

Arc Length

1.57'' (40mm)

Arc Tube  Material

Quartz

Max. Permissible Bulb Temp.

430º C (806º F)

Max. Permissible Base Temp.

210º C (410º F)

Max. Bulb to Base Eccentricity

3º

Max. Arc Tube to Base Eccentricity

3º

◗ Operating Characteristics (Photometric)

Approx. Initial Lumens

1,2

42,600

Approx. Mean Lumens

1,3,4

29,820 

Rated Average  Life, Hours

5

20,000

Correlated Color Temp. (CCT)

3

4100K

CIE Chromaticity Approx.

3

x-.385, y-.400

Color Rendering Index (CRI)

62

Efficacy (lpw)

106.5

◗ Operating Position

Base Up ± 15º–Open or Enclosed Luminaires Unless Otherwise Noted 

Note: Pulse Start Metal Halide is Designed for Operation

on Only Approved Ballasts with Metal Halide Pulse Ignitors.

BURNING HOURS

RATED AVERAGE LIFE 20,000 HOURS

100%

90%
80%
70%
60%
50%
40%

0 2000 

4000 

6000 

8000 

10000

% LUMEN

MAINTENANCE