Figure 179: Connecting The Dc Source Power Cable Lugs To A 120-A Input Power - Juniper PTX5000 Hardware Manual

PTX5000 Packet Transport Router Hardware Guide
302
CAUTION: You must use an appropriate torque-controlled tool to tighten
the nuts. Applying excessive torque damages the terminal studs and power
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 179: Connecting the DC Source Power Cable Lugs to a 120-A Input
Power Tray
Cable restraint
Tighten the cable restraint over the DC power cables.
7.
and to indicate
(+) (–)
must be powered by
PDU0
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