Juniper PTX5000 Hardware Manual page 259

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Copyright © 2017, Juniper Networks, Inc.
their polarity. There is no standard color coding for DC power cables. The
color coding used by the external DC power source at your site determines
the color coding for the leads on the power cables that attach to the
terminal studs on each power supply.
CAUTION: All inputs on the DC PDU in slot
dedicated power feeds derived from feed A, and all inputs on the DC PDU
in slot must be powered by dedicated power feeds derived from feed
PDU1
B. This configuration provides the commonly deployed A/B feed
redundancy for the system.
Connect the negative (–) DC source power cable to the
9.
(see Figure 119 on page
secure the cable lug to the input terminal.
Verify that the source power cables are connected to the appropriate terminal: the
10.
positive (+) source cable to the return terminals (labeled
source cable to the input terminals (labeled
Replace the terminal block safety cover and ensure that the cables fit into the slots
11.
of the safety cover.
Repeat the procedure for the input power terminals for all the PSMs in the PDU.
12.
Repeat the procedure for the other PDU.
13.
Verify that the DC power cables do not touch or block access to the components, and
14.
that they do not drape where people could trip on them.
Tools and Parts Required to Provide Power to the PTX5000 Packet Transport Router
on page 195
Powering On the DC-Powered PTX5000 Packet Transport Router with High Capacity
DC PDUs and High Capacity DC PSMs on page 247
Installing the PTX5000 Cable Management System for High Capacity DC PDU on
page 196
Chapter 21: Connecting the Router to Power
222). Using a 7/16-in. (11-mm) nut driver, tighten the nut to
–48V/60A
must be powered by
PDU0
input terminal
-48 V/60A
) and the negative (–)
RTN
).
223