Figure 44: Connecting The Dc Source Power Cable Lugs To An Input Power - Juniper PTX Series Hardware Manual

Copyright © 2012, Juniper Networks, Inc.
supply. The maximum torque that may be applied to this nut is 99 lb-in.
(11 Nm).
CAUTION: You must ensure that power connections maintain the proper
polarity. The power source cables might be labeled
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.

Figure 44: Connecting the DC Source Power Cable Lugs to an Input Power

Tray
Cable restraint
Tighten the cable restraint over the DC power cables.
14.
Verify that the source power cables are connected to the appropriate terminal: the
15.
positive (+) source cable to the return terminal (labeled
source cable to the input terminal (labeled
Chapter 11: Providing Power to the PTX5000 Packet Transport Switch
–48V ).
and to indicate
(+) (–)
must be powered by
PDU0
) and the negative (–)
RTN
95