PORTFOLIO
DESCRIPTION
A low brightness 4" aperture lensed downlight for use in wet locations
which accepts PAR20, PAR30 and A19 lamps. The deeply regressed lens
provides superb shielding to eliminate brightness at higher angles. Choice
of lenses for various aesthetics. The modular housing will also accept
various downlight, wall wash, and lens reflectors.
Type
Catalog #
Project
Date
Comments
Prepared by
SPECIFICATION FEATURES
A ... Reflector
Clear upper Alzak® reflector for
maximum output. Positive reflector
mounting pulls trim tight to ceiling.
0.050" spun aluminum lower
reflector available in a variety of
Alzak® finishes. Painted white
finish as well as black and white
baffles.
Lens
Choice of tempered fresnel,
prismatic, diffuse, or clear glass
lenses. Lens is fixed to lower
reflector.
B ... Trim Ring
Self flanged or molded white trim
ring.
C ... Socket Cap
One piece heat dissipating die-cast
aluminum.
D ... Universal Mounting
Bracket
Accepts 1/2" EMT, C channel, T bar
fasteners, and bar hangers (See
Accessories). Provides 5" total
vertical adjustment.
E ... Housing
Precision die-cast aluminum
1-1/2" (38mm) deep collar. Optical
assembly adjusts within the
housing to accommodate ceilings
up to 3 1/2" (89mm) thick.
F ... Conduit Fittings
Die-cast screw tight connectors.
G ... Junction Box
Galvanized with (6) 1/2" and (2)
3/4" KOs. Listed for twelve
#12AWG (six in, six out) 90°C
conductors and feed through
branch wiring.
H ... Socket
Medium base porcelin base socket
with nickel plated screw shell to
prevent lamp freeze.
Insulation Detector
Self-resetting insulation detector
opens circuit if insulation is
improperly installed.
Labels
cULus listed, wet location.
HD4
4781/4780
75W PAR30
50W PAR20
100W A19
G
I
9-3/4"
[248mm]
E
CP 10-1/4"
[260mm]
4" LENSED
DOWNLIGHT
Optional Step Down
Transformer
H
A
13 5/8"
[346mm]
4 7/16" [113mm]
C
5 1/8" [130mm]
11 1/8"
(282mm)
5 3/4" [146mm]
NOTES:
Accessories should be ordered
separately. For additional options
please consult your Cooper Lighting
Representative. Alzak is a registered
trademark of Aluminum Company
of America.
ORDERING INFORMATION
Sample Number: Complete unit consists of housing, ballast and trim.
Housing
HD4=4''
Incandescent
Options
CP=Chicago
Plenum
Trims
4780=Molded Trim Ring
Finish
B=Specular Black
Lens
1G=Prismatic Glass
4781=Self Flanged
Lensed Reflector
G=Specular Gold
GP=Graphite
2G=Diffuse Glass
3G=Clear Glass
GPH=Graphite Haze
H=Semi-Specular Clear
4G=Fresnel Glass
Option
WF=White Painted
Flanged (Self
Flanged only)
LI=Specular Clear
W=Gloss White
Accessories
H277=Step Down Transformer, 300VA Max
HB26=C Channel Bar Hangers, 26" Long, Pair
HB50=C Channel Bar Hangers, 50" Long, Pair
FK5=5 Amp Field Installable Fuse Kit 300V Max
RMB-22=Wood Joist Bar Hanger, 22" Long, Pair
HSA4=Slope Adapter for 4" Aperture Housings,
Specify Slope
WH=Wheat
WHH=Wheat Haze
WMH=Warm Haze
BB=Black Baffle (4780 only)
WB=White Baffle (4780 only)
Specifications and Dimensions subject to change without notice.
Consult your representative for additional options and finishes.
ADP040660
04/29/2007 1:36:30 PM
PHOTOMETRICS
HD4 4781/4780
Test No. H21317
HD4 4780LI2G
Lamp=100WA19/IF
Lumens=1710
Spacing Criteria=1.1
Efficiency=39.1%
150
Average Luminance
Candlepower
Candlepower Distribution
300
Deg.
0
5
15
CD
445
444
419
25
35
45
55
65
75
85
90
345
258
177
46
3
1
1
0
Deg.
45
55
65
75
85
CD/SQ M
24400
7847
715
527
782
Lumens
319
%Lamp
18.6
Beam
Diameter
6' 6"
12
9
7
4
3
6'
8'
10'
12' 6"
7'
8'
10'
13'
6"
6"
6"
0"
Beam diameter is to 50% of maximum footcandles, rounded
to the nearest half-foot.
Coefficient of Utilization
%Luminaire
47.7
0-40
0-60
0-90
90-180
480
663
668
0
28.1
38.8
39.1
0.0
71.8
99.2
100.0
0.0
0-180
668
39.1
100.0
1
2
3
4
9
10
70
50
70%
30
10
50
30
Test No. H21315
HD4 4780LI1G
Lamp=75PAR30L /
HAL / FL40
Lumens=940
Spacing Criteria=0.6
Efficiency=65.5%
800
50%
10
30%
50
10
50
10%
10
0%
50
10
0
47
44
47
43
47
42
47
41
45
42
45
41
45
40
43
40
43
39
42
39
42
38
40
37
40
36
39
36
41
39
36
34
39
36
33
30
37
33
30
27
36
31
28
25
38
35
32
29
37
33
30
27
35
31
28
25
37
34
31
29
34
31
27
25
36
33
30
28
34
30
27
25
35
32
30
27
33
30
27
24
32
29
26
24
32
30
28
26
27
25
23
22
25
23
21
19
23
21
19
17
27
25
23
22
24
22
21
19
23
21
19
17
26
25
23
21
22
20
19
17
26
24
22
21
22
20
19
17
25
24
22
20
22
20
18
17
21
20
18
16
25
20
18
16
20
28
16
20
16
rc=Ceiling reflectance, rw=Wall reflectance, RCR=Room cavity ratio
CU Data Based on 20% Effective Floor Cavity Reflectance.
19
16
19
16
15
Average Luminance
Candlepower
Candlepower Distribution
400
80%
rc
rw
RCR
0
5
6
7
8
Deg.
0
5
15
CD
1171
1117
750
25
35
45
55
65
75
85
349
142
49
13
1
1
0
90
0
Deg.
45
55
65
CD/SQ M
6575
2150
224
75
85
367
0
Cone of Light
Distance to
Illuminated Plane
Initial Nadir
Footcandles
Beam
Diameter
3' 6"
4' 0"
33
24
18
6'
7'
8'
5'
6'
7'
9'
12
7
10'
12' 6"
5
15'
0"
0"
6"
0"
Beam diameter is to 50% of maximum footcandles, rounded
to the nearest half-foot.
Footcandle values are initial, apply appropriate light loss factors where necessary.
1200
Zonal Lumen Summary
0-40
0-60
0-90
90-180
0-180
Initial Nadir
Footcandles
Footcandle values are initial, apply appropriate light loss factors where necessary.
Zonal Lumen Summary
Zone
0-30
Distance to
Illuminated Plane
7'
450
Zone
0-30
Cone of Light
Lumens
472
561
613
616
0
616
%Lamp
50.2
59.7
65.2
65.5
0.0
65.5
Coefficient of Utilization
%Luminaire
76.7
91.1
99.5
100.0
0.0
100.0
50%
50
10
30%
50
10
50
10%
10
0%
0
73
69
65
61
58
55
73
67
61
57
53
50
70
66
63
60
57
54
70
65
60
56
53
49
67
64
61
58
55
53
67
63
59
55
52
49
66
62
58
54
51
48
59
54
50
47
53
50
47
52
47
56
51
47
45
50
47
44
50
44
54
48
45
42
48
44
42
47
42
52
46
42
40
46
42
40
45
40
50
44
40
38
44
40
38
43
38
rc=Ceiling reflectance, rw=Wall reflectance, RCR=Room cavity ratio
CU Data Based on 20% Effective Floor Cavity Reflectance.
51
49
47
44
43
47
44
42
40
38
50
48
46
44
42
46
44
42
40
38
45
43
41
39
37
rc
rw
RCR
0
1
2
3
4
5
6
7
8
9
10
80%
30
70
50
78
75
71
68
65
62
78
73
68
64
60
57
78
71
66
61
57
53
10
78
70
63
58
54
50
50
76
71
67
63
59
56
70%
30
76
70
65
60
56
53
10
76
69
63
58
54
50
Specifications and Dimensions subject to change without notice.
Portfolio • Customer First Center • 1121 Highway 74 South • Peachtree City, GA 30269 • TEL 770.486.4800 • FAX 770.486.4801
ADP040660
04/29/2007 1:36:30 PM