Lightolier MBS2GHP154, MBS2GHP254 User Manual

Mini-Beam HP 2' x 4' Recessed Fluorescent MBS2GHP154/254

Page 1 of 2 Direct/Indirect, Static, 1 and 2 Lamp, Linear T5, 54 Watt

Features

• Can provide 47.3 maintained footcandles of balanced brightness
illumination at only 0.73 watts per square foot.

• 92.7% efficient (1 lamp, 54 watt).

• 95.2% efficient (2 lamp, 54 watt).

• Spacing to mounting ratio 1.5 (1 lamp 54 watt).

• Spacing to mounting ratio 1.4 (2 lamp 54 watt).

•

Direct/indirect appearance with soft contoured interior.

• Four inch wide white acrylic lens.

• Only 5-1/2" deep.

• Same fixture fits both G and T ceiling types.

• Fits flush to face of slot grid (T) ceiling types.

• Lamp shield hinges from either side.

• Hinged external ballast housing compartment.

• Can be continuous row mounted.

• Wiring access plate standard.

• 4 hold-down clips standard.

• Housing is 20 gauge steel, meets NYC Code requirements.

Job Information Type:

Job Name:

Cat. No.:

Lamp(s):

Volts/Ballast:

10/05

Hinged external ballast housing
compartment

Exposed t-grid ceiling

Exposed slot t-grid ceiling

Acoustical
material
by others

Exposed T-bar
by others

1-1/2"
max.

Acoustical
material
by others

15/16"

24"

1-7/8"
max.

Exposed T-bar
by others

9/16"

24"

Mounting Methods Dimensions

Hinged external
ballast housing
compartment

Ballast

Hinged external ballast housing compartment

24" (610mm)

2" x 2" access plate
with two K.O.’s (7/8" dia.)

2-5/8"

(67mm)

5-1/2"

(139mm)

48" (1219mm)

Features

4" (102mm)

Lightolier a Genlyte company www.lightolier.com

Technical Information: [phone] • Fax [phone]
631 Airport Road, Fall River, MA 02720 • [phone] • Fax [phone]
We reserve the right to change details of design, materials and finish.
© 2005 a Genlyte company Section 5/Folio M20-24

Hold-down clips

Mini-Beam HP 2' x 4' Recessed Fluorescent MBS2GHP154/254

Page 2 of 2 Direct/Indirect, Static, 1 and 2 Lamp, Linear T5, 54 Watt

Job Information Type:

Ordering Information

Explanation of Catalog Number. Example: MBS2GHP154120WBGLR

Options/Accessories

Fusing: Internal fast-blow fusing. Suffix: GLR.

Internal slow-blow fusing. Suffix: GMF.

Electrical/Wiring Options: Consult factory.

Specifications

Performance: In an installation of 1 lamps 54W luminaires in a room cavity of

1, with reflectance of 80% ceiling, 50% walls, 20% floor, the C.U. shall not be
less than .95. To control veiling reflections, luminaire output in the 30°-90° zone
shall not be less than 76.3%.

Materials: Housing is die-formed 20 gauge steel.
Finish: Chassis exterior–baked white acrylic enamel. Reflector–baked flat

white acrylic enamel, minimum 86% reflectance. Phosphate undercoating.

Lamp Shield–White Virgin Acrylic Lens.
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 and ULc Listed.

Mini-Beam

Direct/Indirect

Recessed

2

Fixture

Width

G

Ceiling Type:

Fits both

Standard Grid

and

Slot Grid

HP

High

Performance

Prismatic

Lens

Voltage:

120 or 277

Options:

Add appropriate
suffix to catalog

no, ie: (GLR)

Ballast:

<20THD <10THD

1 or 2 Lamp 54W Elec. T5 – PG ††
WB = Linear T5

Programmable Start
Less than 10 THD
58 Input Watts

1.0 Ballast Factor
(WB ballast option is
only available in
1 lamp option)

††Program Rapid Start (UNV only).

S

Body Style:

S = Static

Lamp

Quantity

1=1 Lamp
2=2 Lamp

54

Lamp Quantity:

(By others)

54 = HO/T5 54 Watt

Lightolier a Genlyte company www.lightolier.com

Technical Information: [phone] • Fax [phone]
631 Airport Road, Fall River, MA 02720 • [phone] • Fax [phone]
We reserve the right to change details of design, materials and finish.
© 2005 a Genlyte company Section 5/Folio M20-24

0.0 45.0 90.0 FLUX

0 1267 1267 1267

5 1245 1256 1250 119

15 1190 1174 1160 333

25 1088 1091 1174 516

35 955 1061 1221 674

45 790 1024 1117 757

55 614 821 813 685

65 424 549 590 525

75 213 352 434 357

85 42 110 136 113

90 335

Model No. MBS2GHP154120PG

LER = FP - 67.4 IW - 63.7 BF - 1.05
Comparative yearly lighting energy cost per

1000 lumens = $3.56

CANDELA DISTRIBUTION

0

AVERAGE AVERAGE AVERAGE AVERAGE

IN DEG. 0-DEG. 45-DEG. 90-DEG.

45 1623. 2103. 2293.
55 1555. 2078. 2058.
65 1457. 1886. 2029.
75 1194. 1975. 2433.
85 0693. 1839. 2266.

LUMINANCE DATA IN CANDELA/SQ. METER

COEFFICIENTS OF UTILIZATION –

ZONAL CAVITY METHOD. EFFECTIVE
FLOOR CAVITY REFLECTANCE 0.20

0

RC 80 50 30

RW 70 50 30 50 30 10 50 30 10

01 100 95 91 89 86 83 85 83 80
02908276777267747066
03827264676156655955
04756355605347575146
05695647534640514540
06635042484035464035
07584537433631423531
08544133393227383227
09513830362925352924

10 47 35 27 33 27 22 33 26 22

ZONE LUMENS % LAMP % FIXT

00-030 0968 22.0 23.7
00-040 1642 37.3 40.3
00-060 3084 70.1 75.6
00-090 4080 92.7 100.0

90-180 0000 00.0 000.0

00-180 4080 92.7 100.0

ZONAL LUMEN SUMMARY

Report Number: G2005266
Catalog Number: MBS2GHP154120PG
Lamp: FP28/835
Luminaire: MBS with solid white lens
Ballast: B254IUNV-E
Report is based on 4400 lumens per lamp.
Efficiency: 92.7%
CIE Type-Direct-Indirect
Plane: 0-Deg. 90-Deg.
Spacing Criteria: 1.2 1.5
Shielding Angles: 90 90
Plane: 0-Deg. 90-Deg.
Luminous Length: 46.800 22.800

MB

Standard Mini-Beam

M3

For NYC Code – Local 3 Manufactured

0.0 45.0 90.0 FLUX

0 2472 2472 2472

5 2454 2495 2528 239

15 2369 2549 2648 716

25 2210 2489 2564 1125

35 1983 2274 2298 1383

45 1682 1950 2104 1488

55 1315 1561 1717 1382

65 876 1123 1269 1093

75 436 743 879 733

85 84 223 245 217

90 555

Model No. MBS2GHP254120PG

LER = FP - 68.3 IW - 122.4 BF - 1.0
Comparative yearly lighting energy cost per

1000 lumens = $2.52

CANDELA DISTRIBUTION

0

AVERAGE AVERAGE AVERAGE AVERAGE

IN DEG. 0-DEG. 45-DEG. 90-DEG.

45 3454. 4004. 4321.
55 3329. 3952. 4347.
65 3010. 3859. 4360.
75 2446. 4169. 4932.
85 1400. 3715. 4082.

LUMINANCE DATA IN CANDELA/SQ. METER

COEFFICIENTS OF UTILIZATION –

ZONAL CAVITY METHOD. EFFECTIVE
FLOOR CAVITY REFLECTANCE 0.20

0

RC 80 50 30

RW 70 50 30 50 30 10 50 30 10

01 103 98 94 92 88 85 88 85 83
02938578797469767268
03847466696358676157
04776556615449595348
05715849554742534641
06655243494236484136
07604738453732433732
08564335413429403328
09523931383126363025

10 49 36 28 35 28 23 34 27 23

ZONE LUMENS % LAMP % FIXT

00-030 2080 23.6 24.8
00-040 3462 39.3 41.3
00-060 6332 72.0 75.6
00-090 8375 95.2 100.0

90-180 0000 00.0 000.0

00-180 8375 95.2 100.0

ZONAL LUMEN SUMMARY

Report Number: G2005256
Catalog Number: MBS2GHP254120PG
Lamp: FP54T5 HO
Luminaire: MBS with high performance

prismatic lens
Ballast: QT2X54
Report is based on 4400 lumens per lamp.
Efficiency: 95.2%
CIE Type-Direct-Indirect
Plane: 0-Deg. 90-Deg.
Spacing Criteria: 1.3 1.4
Shielding Angles: 90 90
Plane: 0-Deg. 90-Deg.
Luminous Length: 46.800 22.800