T4000 Dc Power Distribution; Figure 149: Typical Dc Source Cabling To The Router - Juniper T4000 Hardware Manual

T4000 DC Power Distribution

Related
Documentation
Copyright © 2013, Juniper Networks, Inc.
Connecting DC Power to the T4000 Router (Four 60-A Inputs) on page 130
Connecting DC Power to the T4000 Router (Three 80-A DC Power Cables to Six 60-A
Inputs) on page 133
Replacing a T4000 Six-Input DC Power Supply on page 257
T4000 DC Power Electrical Safety Guidelines on page 320
Most sites distribute DC power through a main conduit that leads to frame-mounted DC
power distribution panels, one of which might be located at the top of the rack that
houses the router. A pair of cables (one input and one return) connects each set of
terminal studs to the power distribution panel.
NOTE: All inputs on the DC power supply in slot 0 must be powered by
dedicated power feeds derived from feed A, and all inputs on the DC power
supply in slot 1 must be powered by dedicated power feeds derived from feed
B. This configuration provides the commonly deployed A/B feed redundancy
for the system.
Figure 149 on page 343 shows a typical DC source cabling arrangement.

Figure 149: Typical DC Source Cabling to the Router

PEM 0
PEM 1
Chassis
Return (+)
grounding
points
Input ( )
Central office ground
T4000 Power System Description on page 43
Appendix D: Power Guidelines, Requirements, and Specifications
Central office
Primary &
secondary
DC power
distribution
Ground
window
Batteries
Central
office ground
Central office
Primary &
secondary
DC power
distribution
Ground
window
Batteries
CO ground
Central
office ground
Feed A
AC
Rectifiers
Plant
controls
Battery plant
Feed B
AC
Rectifiers
Plant
controls
Battery plant
343