39
Do not install or remove power cables when the power is on. To avoid human
injuries, power off the cabinet before performing the operations.
Upper cable tray
PGND cable (green and yellow)
M8 screw
BGND (black)
RTN(+)
–48 V power cable (blue) NEG(-)
Route the power cables and the PGND cables on the upper cable tray. Connect the PGND cables to the
ground screws on the top of the cabinet. Route the power cables through the cable hole on the top of the
cabinet, and then route the power cables to the wiring terminal of the DC power distribution box.
Plug the two-hole OT terminals of the power cables, from top downwards, with the fluted sides facing the front
side of the cabinet, into the wiring terminals marked with RTN(+) and NEG(-) respectively on the DC power
distribution box.
Install OT terminals correctly according to the wiring terminal labels on the plastic
cover of the DC power distribution box.
Installing and Routing Power Cables and PGND Cables - Overhead
Cabling
d
Route and bind power cables, signal cables, and optical fibers separately with an interval of more than 3 cm
between them. For the power cables, first install PGND cables, connect BGND cables to RTN(+), and then
connect –48 V power cables to NEG(-).
TN51PDU
Phillips screwdriver
Adjustable wrench
NOTE
CAUTION
DANGER
• Installing and Routing Power Cables and PGND Cables – Overhead Cabling (TN51PDU)
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