Juniper PTX3000, Quick Start Manual, Page: 20 / 37

Connect Redundant DC Power to the PTX3000 DC Power Supply Modules
To connect the DC source power cables to both DC PSM inputs for redundant power:
1.
To connect the packet transport router to DC power, you need the following tools and
parts:
•
7/16-in. (11 mm) nut driver, for tightening nuts to the terminal studs
CAUTION: You must use an appropriate torque-controlled tool to tighten
the nuts. Applying excessive torque damages the terminal studs. The
maximum torque that may be applied to this nut is 24 lb-in. (2.7 Nm).
• Phillips (+) screwdriver, number 1
• DC power cables, which you must provide
•
DC power lugs
2.
Ensure that the voltage across the DC power source cable leads is 0 V and that there
is no chance that the cable leads might become active during installation.
3.
Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect
the strap to the ESD point on the chassis.
4.
Switch the power switch on the power supply module (PSM) faceplate to the standby
position ( ).
5.
Loosen the captive screw on the PSM.
6.
Grasp the PSM, and pull it out to remove it from the chassis (see Figure 15 on page 20 ).
The DC PSM weighs 5.4 lb (2.5 kg).
Figure 15: Removing a DC PSM
7.
Set the switches for input
1
and input
2
to the on position (
ON
) for redundant power.
Copyright © 2014, Juniper Networks, Inc. 20
PTX3000 Packet Transport Router Quick Start