Juniper SRX550 Hardware Manual page 140

SRX550 High Memory Services Gateway Hardware Guide
118
NOTE: The DC cable should be of minimum 14 AWG.
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
terminals on the power supply.
Connect DC power cables to the
5.
Remove the screws and square washers from the
a.
(+) screwdriver, number 2. The square washers are permanently attached to the
screws.
Secure each power cable lug to the appropriate terminal with a screw. Apply
b.
between 23 lb-in. (2.6 Nm) and 25 lb-in. (2.8 Nm) of torque to each screw.
Secure the positive (+) DC source power cable lug to the
Secure the negative (–) DC source power cable lug to the
A+ and A- terminals, as shown in
and
A+
Copyright © 2016, Juniper Networks, Inc.
and to indicate
(+) (–)
Figure 26 on page 119:
terminals. Use a Phillips
A-
(return) terminal.
A+
(input) terminal.
A-