Juniper SRX 5800, Hardware Manual

Page: 293 / 536

b. On INP0 attach the negative (–) DC source power cable lug to the –48V (input) terminal. Repeat
this step for INP1 if using two feeds.
c. Apply between 23 lb-in. (2.6 Nm) and 25 lb-in. (2.8 Nm) of torque to each nut (see
Figure 128 on page 294 ).
Figure 128: Connecting DC Power to a High-Capacity DC Power Supply
g017594
Split
washer
Cable
lug
Terminal
studs
Nut
CAUTION: Ensure that each power cable lug seats flush against the surface of
the terminal block as you are tightening the nuts. Ensure that each nut is properly
threaded onto the terminal stud. The nut should be able to spin freely with your
fingers when it is first placed onto the terminal stud. Applying installation torque
to the nut when improperly threaded may result in damage to the terminal stud.
CAUTION: The maximum torque rating of the terminal studs on the DC power
supply is 36 in-lb. (4.0 Nm). The terminal studs may be damaged if excessive
torque is applied. Use only a torque-controlled driver or socket wrench to tighten
nuts on the DC power supply terminal studs.
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