T640 Ac Power Cord Specifications - Juniper T640 Hardware Manual

T640 Core Router Hardware Guide
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T640 AC Power Cord Specifications

358
Table 46: Typical AC Power Requirements for T640 Components
(continued)
Component
Cooling system (full speed – normal speed)
Craft interface
PIC —Generalized typical value
PIC (Type 3)—Generalized maximum value
PIC (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
T640 Power System Description on page 49
T640 AC Power System Specifications on page 355
T640 Three-Phase Delta AC Power Supply Specifications on page 355
T640 Three-Phase Wye AC Power Supply Specifications on page 356
T640 AC Power Cord Specifications on page 358
Most sites distribute power through a main conduit that leads to frame-mounted power
distribution panels, one of which can be located at the top of the rack that houses the
router. An AC power cord connects each power supply to the power distribution panel.
Each AC power supply has a metal wiring compartment that contains the AC terminal
block and ground labeled GND
labeled , , , and , from left to right. The delta AC terminal block consists of three
L1 L2 L3 N
input terminals labeled ,
L1
Power
Requirement
(Watts)
1056 W —
321.6 W =
734.4 W
9.6 W
30 W
57.6 W
158.4 W
. The wye AC terminal block consists of four input terminals
, and , from left to right.
L2 L3
Power Requirement
(Watts) with 85%
Efficiency
864 W
11 W
35 W
68 W
186 W
Copyright © 2010, Juniper Networks, Inc.