Juniper T640 - Page 172

Table 79: Typical AC Power Requirements for T640 Components
(continued)
Power Requirement
(Watts) with 85%
Efficiency
Power
Requirement
(Watts)Component
147 W124.8 WHost subsystem (600, 1600, or 2000 Routing
Engine and T-CB)
11 W9.6 WSCG
91 WNot
applicable
Redundant backup three-phase delta AC power
supply
91 WNot
applicable
Redundant backup three-phase wye AC power
supply
864 W1056 W —
321.6 W =
734.4 W
Cooling system (full speed – normal speed)
11 W9.6 WCraft interface
35 W30 WPIC —Generalized typical value
68 W57.6 WPIC (Type 3)—Generalized maximum value
186 W158.4 WPIC (Type 4)—Generalized maximum value
•
Example of calculating typical power consumption for minimum configuration:
Base System + 1 FPC3 + 1 PIC =
954 W + 384 W + 35 W= 2193 W
•
Example of calculating typical power consumption for maximum configuration:
Base System +8 Enhanced Scaling FPC3 + 1 Host subsystem + 1 SCG + 32 PICs + fan
tray (full speed – normal speed) =
954 W + 8 (514 W) + 147 W + 11 W + 32 (68 W) + 864 W =
954 W + 4112 W + 147 W + 11 W + 2176 W + 864 W = 8264 W
•
Example of calculating system thermal output:
Watts DC/0.293 = BTU/hr
8264/0.293 = 28,205 BTU/hr
Related
Documentation
T640 Power System Description on page 95•
• T640 AC Power System Specifications on page 135
• T640 Three-Phase Delta AC Power Supply Specifications on page 136
• T640 Three-Phase Wye AC Power Supply Specifications on page 136
• T640 AC Power Cord Specifications on page 139
Copyright © 2017, Juniper Networks, Inc.138
T640 Core Router Hardware Guide