ADTRAN Total Access 3010, Системное руководство

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6TAENG201-1E
TOTAL ACCESS 3000/3010
ENG-201
Page 11 of 32
Total Access
®
3000/3010 System Manual © 2002, ADTRAN, Inc.
1.3.2 Total Access 3000/3010 Heat Dissipation and GR-63-CORE
Telcordia GR-63-CORE specifies the physical protection requirements and objectives
for telecommunications equipment. Often referred to as “NEBS” (Network
Equipment-Building System), these guidelines have become the de facto standard for
U.S. telecommunications equipment and include both requirements and objectives for
heat dissipation.
The NEBS requirement is that the heat release of telecommunications equipment be
documented. For the Total Access 3000/3010 system, this is done in the previous
section, Power Dissipation Considerations (Section 1.3).
1.3.2.1 Shelf Level
NEBS further provides specific objectives for heat dissipation within a shelf in
paragraph O4-12. For an equipment shelf such as Total Access 3000/3010, the relevant
values are as follows in
Table 13
, from GR-63-CORE Tables 4 through 6:
Table 13. Heat Dissipation for Total Access 3000/3010 Shelf
n o i t c e v n o c l a r u t a N m / W 5 2 2
2
t f / W 9 . 0 2 ( r e t e m r e p
2
s e s u t n e m p i u q e e h t e c a p s e m a r f l a c i t r e v f o ) t f /
s n a f r i a - d e c r o F m / W 0 0 3
2
t f / W 9 . 7 2 ( r e t e m r e p
2
s e s u t n e m p i u q e e h t e c a p s e m a r f l a c i t r e v f o ) t f /
n o i t c e v n o c l a r u t a N m / W 0 5 4 1
2
t f / W 7 . 4 3 1 (
2
)
s n a f r i a - d e c r o F m / W 0 5 9 1 2 t f / W 2 . 1 8 1 ( 2 )
Table 14. Heat Dissipation for Individual Frame
1.3.2.2 Frame Level
NEBS provides specific objectives for heat dissipation in a frame in paragraph O4-12
for a frame such as intended for the Total Access 3000/3010. The relevant values are
as follows in
Table 14
, from GR-63-CORE table 4-6: