Philips 232538 manual 8 5/16, Ordering Information, Physical Characteristics, Operating Position

Pulse Start Horizontal Metal Halide 400 Watt ED-28 Lamp (Clear)

8 5/16"

◗ Ordering Information

Ordering Code	MS400/HOR/ED28/PS
ANSI Designation	M155/M135/E
Product Number	232538
Description	Pulse Start Metal Halide
Package Quantity	12

	◗ Physical Characteristics
		Bulb Size	ED-28
		Bulb Finish	Clear
		Base (Nickel Plated Brass)	Mogul-Screw
		Maximum Overall Length (MOL)	8 5/16'' (211mm)
5"		Light Center Length (LCL)	5.0'' (127mm)
		Arc Length	1.73" (43.9mm)
		Arc Tube Material	Quartz
		Max. Permissible Bulb Temp.	450ºC (842ºF)
		Max. Permissible Base Temp.	210ºC (410ºF)
		Max. Bulb to Base Eccentricity	3º
		Max. Arc Tube to Base Eccentricity	3º

◗Operating Characteristics (Photometric)

Approx. Initial Lumens1,2	40,000
Approx. Mean Lumens1,3,4	28,000
Rated Average Life, Hours5	20,000
Correlated Color Temp. (CCT)3	4000K
CIE Chromacity Approx.3	x-.385, y-.390
Color Rendering Index (CRI)	68
Efficacy (lpw)	100

◗Operating Position

Horizontal ± 15°—Enclosed Luminaires Only

Note: Pulse Start Metal Halide is designed for operation on only approved ballasts with Metal Halide Pulse Ignitors.