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Installing and Routing cables
3
Installing and Routing Power Cables － Power Distribution Unit (TN81PDU)
Power supply
output area
a1 a2 a3 a4
A DC PDC contains eight power inputs and eight power outputs. If a short-circuit copper bar is used, the eight
power inputs and eight power outputs are changed to four power inputs and eight power outputs.
Area A and area B of the DC PDU serve as mutual hot backups.
The power output terminal at side A of the DC PDU provides two channels of power supplies to the PIU
housed in slot 27 of the OptiX PTN 3900 subrack. The power output terminal at side B of the DC PDU
provides two channels of power supplies to the PIU housed in slot 28 of the subrack.
Suggestion
Installing copper plates
Yes
No
Power supply
Power supply
switch area
input area
Area A of the
DC PDU
A1 A2 A3 A4 B1 B2 B3 B4
Installing Copper Plates on Site
Standard power input of the cabinet
Yes
No
Power supply
switch area
Area B of the
DC PDU
Power input of each subrack
4 × 63 A
8 × 32 A
6
Power supply
output area
b1 b2 b3 b4
2 × 63 A
4 × 32 A
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