Juniper PTX5000 Hardware Manual page 244

PTX5000 Packet Transport Router Hardware Guide
208
Attach the negative (–) DC source power cable lug to the
13.
located on the right (see
Use a 10-mm nut driver to tighten the nut.
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 102 on page 209).
(input) terminal,
–48V
and to indicate
(+) (–)
PDU0 must be powered by
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