6TAENG201-1E
TOTAL ACCESS 3000/3010
ENG-201
Page 15 of 32
Total Access
®
3000/3010 System Manual
© 2002, ADTRAN, Inc.
f
l
e
h
S
e
d
i
s
n
I
n
o
i
t
a
p
i
s
s
i
D
t
a
e
H
n
o
i
t
a
r
u
g
i
f
n
o
C
d
e
d
n
e
m
m
p
c
e
R
W
0
3
1
-
0
s
e
l
f
f
a
b
t
a
e
h
o
N
W
0
0
2
-
0
3
1
e
k
a
t
n
i
d
e
t
c
u
r
t
s
b
o
n
u
d
n
a
e
v
o
b
a
s
e
l
f
f
a
b
t
a
e
H
W
+
0
0
2
e
l
f
f
a
b
t
a
e
h
d
n
a
e
l
u
d
o
m
n
a
f
h
t
i
w
e
v
o
b
a
e
l
f
f
a
b
t
a
e
H
r
e
t
l
i
f
n
a
f
h
t
i
w
w
o
l
e
b
Table 15. Configuration Guildline for Heat Dissipation
Table 15
is a guideline intended to aid the designer in determining at what practical
point heat baffles should be used in a single shelf application and also when a fan
module should be added to the configuration. It should be noted that the table is
intended to mimic a shelf loaded with similar heat dissipating cards (e.g. 28 HTU-Cs)
NOTE
Fans are optional based on heat load. ADTRAN recommends the use of fans
if the heat dissipation is greater than 255 W/m
2
per meter (20.9 W/ft
2
/ft) of
vertical frame space the equipment uses.
Some of the high power configurations listed have 7.5-inch spacer between racks.
Only one spacer is required per seven foot rack
; Figure 1 shows two, assuming that
this rack is one in a bay full of Total Access 3000/3010 racks, each engineered for the
worst case heat dissipation scenario. If only one rack is being engineered for the worst
case scenario, the spacer should be used on the right side of the rack (as viewed from
the front). Not only does the inclusion of the 7.5-inch spacer provide more “area
covered by the shelf,” it also allows for the neat dressing of the data cables used by the
Total Access 3000/3010.
