Lightolier MLB SERIES 전단
PHOTOMETRY
MODEL NO. MLB2S36LS2U6120SO
coefficients of utilization — zonal cavity method
RF
20
20
20
RC
80
50
30
RW
70
50
30
50
30
10
50
30
10
1
64
62
60
58
57
56
56
55
54
2
59
56
52
52
50
48
51
49
47
3
55
50
46
47
44
41
46
43
41
4
50
44
40
42
39
36
41
38
35
5
47
40
35
38
34
31
37
34
31
6
43
36
31
35
31
28
34
30
27
7
40
33
28
31
27
25
31
27
24
8
37
30
25
29
25
22
28
24
22
9
35
27
23
26
23
20
26
22
20
10
33
25
21
24
21
18
24
20
18
visual comfort probability
room size
ceiling height
ceiling height
W
L
8.5
10.0
13.0
16.0
8.5
10.0
13.0
16.0
20
20
82
76
71
77
79
71
64
71
20
30
82
78
74
72
79
73
68
65
20
40
82
78
77
75
79
74
73
68
20
60
85
78
77
75
83
74
71
68
30
20
85
80
72
74
81
76
67
70
30
30
85
81
75
70
81
78
70
65
30
40
85
81
77
73
81
78
72
68
30
60
87
81
77
73
84
78
72
68
30
80
87
81
76
74
64
78
72
68
40
20
85
80
76
74
81
76
71
72
40
30
85
81
78
71
81
78
74
67
40
40
85
81
79
74
81
78
75
70
40
60
87
81
79
74
83
78
76
70
40
80
87
81
79
74
83
78
76
70
40
100
87
80
79
74
83
78
76
70
60
30
85
81
79
74
81
78
74
70
60
40
86
81
79
76
81
78
75
73
60
60
87
80
80
76
83
78
76
73
60
80
87
80
80
76
83
78
76
73
60
100
87
81
80
76
83
78
76
73
100
40
86
80
80
76
81
78
76
73
100
60
87
80
80
76
83
78
76
73
100
80
87
80
80
77
83
78
76
73
100
100
87
81
80
77
83
78
76
74
room cavity ratio
luminaries lengthwise
luminaries crosswise
ORDERING INFORMATION
Explanation of Catalog Number. Example: MLB2S36LS2U6120SOGLR
ML
PARABAFFLE
PARABOLIC:
1 1/2" Deep
Precision
Contoured Pre-
anodized
Aluminum
Louver
B
BODY STYLE:
Surface Box
2
FIXTURE
WIDTH
S
CEILING
TYPE:
S=Surface
36
NUMBER OF
CELLS
L
LOUVER FINISH*:
L=Low-iridescence
semi-specular
(standard)
(standard)
P=Low-iridescence
specular
S
WHITE
REFLECTOR
LAMP
QUANTITY:
2 or 3 Lamps
LAMP/
FIXTURE
LENGTH:
(Nominal 24")
U4=6" UT12 or
U1.6 T8 or TT5
U6=6" UT8
(Magnetic T8 or
Electronic T8
Ballast Only)
Ballast Only)
VOLTAGE:
120 or 277
BALLAST TYPE:
LE=Magnetic (T12)
OC=Magnetic (T8)
SS=Electronic (T12)
S3=1-3 Lamp Elec. (T12)
SO=Electronic (T8)
O3=1-3 Lamp Elec. (T8)
DIM=Dimming (T12)
PS=LOL Power Spec
OC=Magnetic (T8)
SS=Electronic (T12)
S3=1-3 Lamp Elec. (T12)
SO=Electronic (T8)
O3=1-3 Lamp Elec. (T8)
DIM=Dimming (T12)
PS=LOL Power Spec
T8 Dimming
Ballast
PB=LOL Power
Spec TT5 Dimming
Ballast
OPTIONS:
Add appro-
Add appro-
priate suffix
to catalog
no., ie: (GLR)
OPTIONS & ACCESSORIES
FUSING: Internal fast-blow fusing. SUFFIX: GLR.
Internal slow-blow fusing. SUFFIX: GMF.
RADIO INTERFERENCE FILTER: 120 or 277 volt, 50 or 60 Hz. One per fixture
is standard. SUFFIX: RF.
ELECTRICAL/WIRING OPTIONS: Consult factory.
LOW DENSITY CEILINGS: DSM
STEM AND CANOPY SETS: Suspends fixture 6", 12", 18" or 24" from surface
(four per fixture is recommended). Catalog Number ASC6 CSP (6"),
ASC12 CSP (12"), ASC18 CSP (18"), ASC24 CSP (24").
is standard. SUFFIX: RF.
ELECTRICAL/WIRING OPTIONS: Consult factory.
LOW DENSITY CEILINGS: DSM
STEM AND CANOPY SETS: Suspends fixture 6", 12", 18" or 24" from surface
(four per fixture is recommended). Catalog Number ASC6 CSP (6"),
ASC12 CSP (12"), ASC18 CSP (18"), ASC24 CSP (24").
SPECIFICATIONS
PERFORMANCE: In an installation of 2 lamp 31W luminaires in a room cavity
ratio of 1, with a reflectance of 80% ceiling, 50% wall, 20% floor, the C.U.
shall not be less than .62. To prevent glare the VCP shall be not less than 83
either lengthwise or cross wise (at 100fc level) and the average brightness at
65° shall not exceed 328 footlamberts. To control veiling reflections, luminaire
output in the 30°-90° zone shall be not less than 69.3°.
ratio of 1, with a reflectance of 80% ceiling, 50% wall, 20% floor, the C.U.
shall not be less than .62. To prevent glare the VCP shall be not less than 83
either lengthwise or cross wise (at 100fc level) and the average brightness at
65° shall not exceed 328 footlamberts. To control veiling reflections, luminaire
output in the 30°-90° zone shall be not less than 69.3°.
SPECIFICATIONS (continued)
MATERIALS: Chassis parts are die-formed 20 gauge cold rolled steel,
welded for rigidity.
LOUVER: pre-anodized aluminum (Coilzak® or equal).
FINISH: Louver—low iridescence, semi-specular pre-anodized vertical grain
reflector sheet. Cavity—white baked acrylic enamel minimum 86%
reflectance. Phosphate undercoating. Chassis exterior—white baked acrylic
enamel.
ELECTRICAL: Thermally protected class “P” ballast C.B.M. approved, non PCB.
If K.O. is within 3" of ballast, use wire suitable for at least 90°.
LABELS: I.B.E.W., UL, ULc Listed.
welded for rigidity.
LOUVER: pre-anodized aluminum (Coilzak® or equal).
FINISH: Louver—low iridescence, semi-specular pre-anodized vertical grain
reflector sheet. Cavity—white baked acrylic enamel minimum 86%
reflectance. Phosphate undercoating. Chassis exterior—white baked acrylic
enamel.
ELECTRICAL: Thermally protected class “P” ballast C.B.M. approved, non PCB.
If K.O. is within 3" of ballast, use wire suitable for at least 90°.
LABELS: I.B.E.W., UL, ULc Listed.
*Consult factory for availability of louver finishes.
MLB2S36LS2U6120SO
2850
31W/U6/T8
Lightolier
a Genlyte Thomas Company
www.lightolier.com
Technical Information: (978) 657-7600 • Fax (978) 658-0595
631 Airport Road, Fall River, MA 02720 • (508) 679-8131 • Fax (508) 674-4710
We reserve the right to change details of design, materials and finish.
© 2002 Genlyte Thomas Group LLC (Lightolier Division)
A0902
631 Airport Road, Fall River, MA 02720 • (508) 679-8131 • Fax (508) 674-4710
We reserve the right to change details of design, materials and finish.
© 2002 Genlyte Thomas Group LLC (Lightolier Division)
A0902
SECTION 2/Folio G20-36
Job Information
Type:
PARABAFFLE (MLB)
MLB SERIES 2U/3U
Page 2 of 2
2'x2' SURFACE BOX FLUORESCENT, 1 1/2" DEEP, 36 CELL PARABOLIC LOUVER
2-6"U LAMP T8/T12, 3-1.6U LAMP T8 OR TT5