Juniper T1600 Hardware Manual page 377

Copyright © 2010, Juniper Networks, Inc.
Table 47: Typical DC Power Requirements for T1600 Components
(continued)
Component
Host subsystem (600, 1600, or 2000 Routing Engine and T-CB)
Line-card chassis control board (LCC-CB)
C1800 Routing Engine
SCG
Redundant backup 3-input 240 A DC power supply
Redundant backup 4-input 240 A DC power supply
Cooling system (normal speed)
Cooling system (full speed)
Craft interface
PIC—Generalized typical value
PIC—Generalized maximum value
Example of calculating power consumption for a minimum configuration under typical
voltage conditions::
Base System + 1 Type 3 FPC + 1 PIC =
30.9 A + 6.8 A + 0.625 A = 38.33 A @ –48 VDC = 1,840 W
Example of calculating power consumption for a maximum configuration under typical
voltage conditions::
Base System + 8 T1600-Type 4 FPCs + 1 LCC-CB + 1 RE-C1800 + 1 SCG + 16 PICs + 5
(TXP-T1600 SIBs – T1600 SIBs) =
30.9 A + 8 (11.3 A) + 1.0 A + 1.7 A + + 0.2 A + 16 (3.3 A) + 5(0.5) A=
30.9 A + 90.4 A + 1.0 A + 1.7 A + + 0.2 A + 52.8 A + 2.5 A= 179.5 A @ –48 VDC = 8616 W
Current requirement adjustment for fans running at full speed (high temperature
environment or cooling component failure):
Calculated system current (X) – Cooling (normal) + Cooling (full speed) =
X A – 6.7 A + 22 A = X A + 15.3 A
Input current from a DC source other than –48 VDC (based on maximum configuration):
(–54 VDC input) x (input current X) = (–48 VDC) x (input current Y)
54 x X = 48 x 94.1 A
X = 48 x 94.1 A/54 = 83.6 A
Appendix D: T1600 Power Guidelines, Requirements, and Specifications
Current
Requirement
(Amps @
–48 VDC)
2.6 A
1.0 A
1.7 A
0.2 A
1.7 A
1.7 A
6.7 A
22 A
0.2 A
0.625 A
3.3 A
353