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17
Alter Concept
2
SB120QVH2GPFOS2FT
1
1
2
60°
0°
0
30°
400
853
2-1/4"(57mm)
23-13/16"(605mm)
0
500
1000
1500
1854
0
°
60°
30°
2-1/4"
(57mm)
47-13/16" (1214mm)
1-11/16"(43mm)
23-13/16"(605mm)
(43mm)
1-11/16"
23-13/16"(605mm)
Numbering System
Complete Catalog N
o
using template below
Ordering Guide
Luminaire
Basic Catalog
Number:
Alter
Semi-Recessed
Voltage:
347
UNV*
Options:
Add appropriate
suffix
See p. 18
Ballast:
PG: T5/T5HO
Electronic
Program Start
(<10% THD)
PR: 40W Electronic TT5
Programmed Rapid
Start (<10% THD)
BE: 50W Electronic
TT5 Rapid Start
(<20% THD)
BF: 55W Electronic TT5
Rapid Start
(<10% THD)
DA: Electronic TT5, T5,
T5HO Program Start
(<10% THD) DALI
Digital Addressable
Dimming
VY: 2 lamp 28W T5
Electronic Step-Dim
Programmed Rapid
Start (B.F.=0.95/0.35)
Luminaire Type Length Width Recessed Depth Lamp Wattage Catalog
(Static) Qty/Type Number
Alter Slim SR 24" 24" 2-1/4" 1-TT5 40,50,55W QVH2GPFOS1FT
Microperforated
24" 24" 2-1/4" 2-TT5 40,50,55W QVH2GPFOS2FT
Mesh
48" 24" 2-1/4" 2-TT5 40,50,55W QVH2GPFOS2FL
White Lamp Shield,
48" 24" 2-1/4" 4-TT5 40,50,55W QVH2GPFOS4FT
Static
48" 24" 2-1/4" 2-T5 28W QVH2GPFOS228
48" 24" 2-1/4" 3-T5 28W QVH2GPFOS328
48" 24" 2-1/4" 2-T5HO 54W QVH2GPFOS254
48" 24" 2-1/4" 3-T5HO 54W QVH2GPFOS354
48” 12” 3-9/16” 2-TT5 40,50,55W QVH1GPFOS2FT
48" 12" 3-9/16" 2-T5 28W QVH1GPFOS228
48" 12" 3-9/16" 2-T5HO 54W QVH1GPFOS254
Ordering Guide
Numbering System
Complete Catalog N
o
using template below
▲
For more information on application notes, see p. 20
2' x 2' Alter Slim SR s 2 Lamp 40 watt TT5 s QVH2GPFOS2FT (Data) s Request Folio C7651
2' x 4' Alter Slim SR s 4 Lamp 40 watt TT5 s QVH2GPFOS4FT (Data) s Request Folio C8232
1' x 4' Alter Slim SR s 2 Lamp 28 watt T5 s QVH1GPFOS228 (Data) s Request Folio CA811
Coefficient of Utilization
RF 20% RC 80%
RW 70 50 30
RCR
1 .56 .53 .51
3 .46 .40 .35
5 .39 .32 .27
7 .33 .25 .20
10 .26 .19 .14
Coefficient of Utilization
RF 20% RC 80%
RW 70 50 30
RCR
1 .54 .51 .49
3 .44 .38 .34
5 .37 .30 .25
7 .32 .24 .20
10 .25 .19 .14
Coefficient of Utilization
RF 20% RC 80%
RW 70 50 30
RCR
1 .75 .72 .69
3 .62 .55 .50
5 .52 .43 .37
7 .44 .34 .28
10 .34 .25 .19
Reference Data
Efficiency 52.6%
Spacing Ratio 1.5
Electronic Ballast
Input Watts (120V) 67.0W
Ballast Factor 0.85
Reference Data
Efficiency 51.1%
Spacing Ratio 1.4
Electronic Ballast
Input Watts (120V) 129.8W
Ballast Factor 0.88
Reference Data
Efficiency 68.5%
Spacing Ratio 1.4
Electronic Ballast
Input Watts (120V) 66.1W
Ballast Factor 1.00
Luminaire Spacing FC
▲
W/Sq FT
50' x 70' x 8.5' Space
8' x 8' (64 sq ft/luminaire) 41 1.10
8' x 10' (83 sq ft/luminaire) 32 0.85
12' x 16' x 8.5' Space
6' x 8' (48 sq ft/luminaire) 33 1.48
TT5 lamp rated at 3150 lumens
Luminaire Spacing FC*
▲
W/Sq FT
50' x 70' x 8.5' Space
8' x 8' (64 sq ft/luminaire) 80 2.00
8' x 10' (83 sq ft/luminaire) 62 1.56
12' x 16' x 8.5' Space
6' x 8' (48 sq ft/luminaire) 64 2.70
TT5 lamp rated at 3150 lumens
* Use 2-lamp T5 model (QVH2GPFOS228)
to reduce light levels and W/FT
2
Luminaire Spacing FC
▲
W/Sq FT
50' x 70' x 8.5' Space
8' x 8' (64 sq ft/luminaire) 45 1.02
8' x 10' (83 sq ft/luminaire) 36 0.79
12' x 16' x 8.5' Space
6' x 8' (48 sq ft/luminaire) 38 1.38
T5 lamp rated at 2600 lumens
TEE-BAR
TEE-BAR
Alter Slim SR
Semi-Recessed 2' x 2' - 2' x 4' - 1' x 4'
*120/277V
3
3
60°
0°
0
30°
400
800
1200
1140
3-9/16"
(90mm)
5-3/16"
(132mm)
12"
(305mm)
47-1/16" (1195mm)