Figure 8.3. DC Cables to PEM Connection
8.
Reattach the removed nuts and washers. Torque the nuts to 6.95 Nm (61.5 lbf-in).
9.
Reattach the safety cover. Torque the safety cover screw to 0.90 Nm (8 lbf-in).
Installing Power Supplies
Only one -48V power supply is necessary to provide full power to the chassis. Installing two
power supplies will provide redundancy and fault tolerance.
1.
Follow the safety precautions described previously.
2.
Stand facing the front of the power enclosure.
3.
Insert a power supply into the empty slot on the left side of the enclosure. Slide the supply
in until it is fully seated. Push the spring-loaded screws in and tighten with a Phillips
screwdriver.
4.
Install the second power supply into the middle slot of the enclosure. Slide the supply in
until it is fully seated. Push the spring-loaded screws in and tighten with a Phillips
screwdriver.
5.
Leave the right slot empty. No power supply will be installed in this slot.
Figure 8.4. Chassis on Power Rack - Front View
Chapter 8: The Power Enclosure
32
