MHR75
7.5” RECESSED PAR LAMP
SUBMITTAL:
JOB:
VOLTAGE:
TYPE:
MHR75
EX AMPLE:
t -
10 0PS
-
PAR38/MED
t
t
-
CS
-
OP TIONS
t
SERIES
WAT TAGE L AMP BA SE REFLEC TOR FINISH
SERIES
-
EB1
-
t
t
OP TIONS
BALL A ST
VOLTAGE
This fixture is proudly made in the USA.
MHR75 SERIES
FEATURES
Finned, extruded aluminum heat sink socket
housing dissipates heat for cooler operation.
XX
Adjustable hanger brackets with bar hangers
standard.
XX
Easy-access, 14-gauge galvanized steel
junction box with two snap-on covers.
XX
20-gauge, die-formed, galvanized steel pan/
plaster frame.
XX
Self-flanged, low-iridescent aluminum
reflector available in assorted colors.
HOUSING — 20-gauge,
die-formed, galvanized
steel pan/plaster frame.
XX
11-13/16”
ø7-5/8”
ELECTRICAL
ø8-1/2”
PAN SIZE: 12” x 16-1/4”
CEILING CUT OUT: 8-1/8” dia.
PAN SIZE w/SCA: 17” x 23”
CUT OUT w/SCA: 10-5/8” dia.
LAMP OPTIONS (Must specify)
ELECTRONIC BALLAST
WATTAGE
LAMP BASE
BALLAST
70PS
PAR38/MED EB1
100PS
PAR38/MED EB1
150PS PAR38/MEDEB1
MAGNETIC BALLAST
WATTAGE
LAMP BASE
BALLAST
70PS
PAR38/MEDMB1
100PS
PAR38/MEDMB1
REFLECTOR FINISH (Must specify)
CS
CG
GD
PW
120
t
Porcelain socket.
Prewired at factory for
easy field installation.
ELECTRONIC
BALLAST — Rated
0ºF minimum starting
temperature.
MAGNETIC
BALLAST — Rated
-20ºF minimum starting
temperature.
REFLECTOR
Clear semi-specular (Standard)
Champagne gold
Gold
Pewter
SG
SPC
STR
WT
Satin-glow
Clear specular
Straw
Wheat
Accent cone with clear prismatic
tempered glass lens
Accent cone with clear glass lens
Accent cone with fresnel glass lens
Micro-baffle with clear prismatic
tempered glass lens
Micro-baffle with clear glass lens
Micro-baffle with fresnel glass lens F
Fuse (120V and 277V only)
MB
MWT
RETRO
SCA__º
YOKE
Micro-baffle
Matte white trim
Retrofit Mounting Pan Assembly (Magnetic ballast
must be remote.) See Williams Downlighting
Information for RETRO specifications.
Sloped Ceiling Adapter (Specify degree
in 5º increments, 10º-30º. SCA increases fixture height. Consult factory for details.)
Yoke mount reflector
208
277
208V (MB1 only)
277V
Low-iridescent aluminum.
Clear semi-specular
(CS) finish standard.
OPTIONS
AC/CPG
AC/ CGS
AC/FF
MB/CPG
MB/CGS
MB/FF
VOLTAGE (Must specify)
120
240
120V
240V (MB1 only)
H.E . W illiams, In c.
June 15, 2009
C ar t hage, Mis s our i
w w w.h ew illia m s.c om
417- 3 5 8 - 4 0 6 5
F a x : 417- 3 5 8 - 6 015
Recessed HID
Page 12A
MHR75
PHOTOMETRY
DESCRIPTION
•100W Metal Halide Par 38 Lamp
•7.375” dia. Recessed Luminaire
•Low-Iridescent Specular Reflector with Open Bottom
7.5” RECESSED PAR LAMP
PHOTOMETRY INFORMATION
Williams Downlighting Catalog # MHR75-100PS-PAR38
Date 03/12/96
Lamp Quantity: 1
Test Report # 8727.0
Lamp Type: M90 (MP100PAR38/U/SP20)
Rated Lumens: 5200.
CANDLEPOWER DISTRIBUTION
VERTICAL
ANGLE
0
5
15
25
35
45
55
65
75
85
90
HORIZONTAL ANGLE
ZONAL
LUMENS
0
45
90
22827.
22827.
22827.
21816.
21188.
21846. 2061.3
7739.
7485.
7066. 2087.3
1761.
1826.
1652. 811.9
309.
299.
264. 185.3
65.
60.
55.
43.5
0.
0.
0.
.0
0.
0.
0.
.0
0.
0.
0.
.0
0.
0.
0.
.0
0.
0.
0.
90°
80°
70°
60°
50°
40°
30°
0°
EFFECTIVE FLOOR CAVITY REFL. = .20
ZONE
LUMENS %LAMP % FIXTURE
0 - 30
4960.
95.4
95.6
0 - 40
5146.
99.0
99.2
0 - 60
5189.
99.8
100.0
0 - 90
5189.
99.8
100.0
TOTAL LUMINAIRE:
0 - 180
5189.
99.8
100.0
IES SPACING CRITERIA: END=.4
DIAGONAL=.4
CROSS=.4
CEILING
WALL RCR
0
1
2
3
4
5
6
7
8
9
10
LIGHT CONE QUICK CALCULATOR TABLES
FC at
Nadir
356.7
228.3
158.5
116.5
89.2
70.5
57.1
End
3.2
4.0
4.8
5.6
6.4
7.2
8.0
LABELS
Recessed HID
Page 12B
Cone Dia. (Feet)
Across
Diagonal
3.2
3.2
4.0
4.0
4.8
4.8
5.6
5.6
6.4
6.4
7.2
7.2
8.0
8.0
C ar t hage, Mis s our i
Information contained herein is subject to change without notice.
.80
.50
1.19
1.13
1.08
1.04
1.00
.96
.94
.91
.88
.85
.83
.30
1.19
1.12
1.05
1.01
.96
.92
.90
.87
.84
.82
.79
.70
1.16
1.13
1.09
1.07
1.04
1.01
.98
.96
.93
.91
.88
.70
.50
1.16
1.11
1.06
1.03
.99
.96
.93
.90
.88
.85
.82
.30
1.16
1.10
1.04
1.00
.95
.92
.89
.87
.84
.81
.78
.50
.50 .30 .10
1.11 1.11 1.11
1.07 1.06 1.05
1.03 1.01 .99
1.00 .98 .96
.97 .94 .92
.94 .91 .88
.92 .89 .86
.89 .86 .84
.87 .83 .81
.84 .81 .79
.81 .78 .76
HORZ. ANGLE
VERTICAL
ANGLE
0
45
90
45
972.
897.
822.
55
0.
0.
0.
65
0.
0.
0.
75
0.
0.
0.
85
0.
0.
0.
MAXIMUM BRIGHTNESS
NOT MEASURED
COLOR CONVERSION FACTORS
REFLECTANCE: Ceiling = 80% Walls = 50% Floor = 20%
LIGHT LOSS FACTOR: 1.0
Room Size - 10’ Ceiling
±50 fc
±75 fc
±100 fc
Small - 400 Sq Ft
4
6
9
Medium - 900 Sq Ft
9
12
16
Large - 1600 Sq Ft
16
25
30
H.E . W illiams, In c.
.70
1.19
1.15
1.11
1.08
1.05
1.02
1.00
.97
.94
.92
.89
LUMINANCE DATA (cd/m 2)
FIXTURE QUANTITY ESTIMATOR TABLE
UL/CUL listed for
through-branch circuit
wiring and dry or damp
locations. UL/CUL listed
for wet location under
covered ceiling when
specified with __/CPG,
__/CGS, or __/FF option.
20°
ZONAL CAVITY COEFFICIENTS
LUMEN SUMMARY
Mounting FC at edge
Height (Ft) of cone
8
178.3
10
114.1
12
79.3
14
58.2
16
44.6
18
35.2
20
28.5
10°
Straw = x .97
Champagne = x .96
Micro-Baffle = x .60
Gold = x .93
Wheat = x .88
Pewter = x .86
w w w.h ew illia m s.c om
417- 3 5 8 - 4 0 6 5
F a x : 417- 3 5 8 - 6 015
HEWJP33923 08/12/13MP