Figure 38: Removing The Terminal Block Cover From A Dc Power Supply - Juniper EX3200 Hardware Manual

Copyright © 2016, Juniper Networks, Inc.
NOTE: The A+ and B+ terminals are referred to as +RTN and A– and B–
terminals are referred to as –48 V in
on page 277
page 272.
Remove the screw securing the terminal block cover using the screwdriver and remove
3.
the terminal block cover (see

Figure 38: Removing the Terminal Block Cover from a DC Power Supply

Remove the screws on the terminals using the screwdriver. Save the screws.
4.
WARNING: Ensure that the power cables do not block access to switch
components or drape where people can trip on them.
Connect the power supplies to the power sources. Secure power source cables to the
5.
power supplies by screwing the ring lugs attached to the cables to the appropriate
terminals by using the screw from the terminals (see
To connect a power supply to a power source:
Leave the jumpers on the power supply terminals in place.
a.
Secure the ring lug of the positive (+) DC power source cable to the A+ or B+
b.
terminal on the DC power supply.
Secure the ring lug of the negative (–) DC power source cable to the A– or B–
c.
terminal on the DC power supply.
Tighten the screws on the power supply terminals until snug using the screwdriver.
d.
Do not overtighten—apply between 8 lb-in. (0.9 Nm) and 9 lb-in. (1.02 Nm) of
torque to the screws.
If you have a second installed power supply, connect it in the same way you did the
first.
To connect one power supply to two power sources:
Chapter 12: Connecting the Switch to Power
"DC Power Wiring Sequence Warning"
and "DC Power Electrical Safety Guidelines for Switches" on
Figure 38 on page 165). Save the screw.
Figure 39 on page 166).
165