Alcatel-Lucent 7705 - Compact Flash

DC-Input Power Connections
98 7705 SAR-M Chassis Installation Guide
For –48 VDC Installations
Follow these steps to wire and connect –48 VDC power feeds (see Figure 23):
Step 1. For CBN installations only, ensure that the positive terminal on the DC power
source is connected to ground.
Step 2. Make the battery return ground connection(s) (Figure 23, key item 7):
i. Run a length of wire from the power source positive terminal to the terminal
strip on the router.
ii. Prepare the end of the wire at the power source according to local safety
practices and attach it to the power source positive terminal.
iii. Prepare the end of the wire at the router by attaching a ring lug (see Figure 22).
iv. Attach the battery return wire to the correct battery return terminal on the
router. For –48 VDC systems, use the +Batt terminal. Tighten to a torque of
8 to 10 lbf-in (0.9 to 1.13 N
.
m) maximum.
v. For redundant power supply configurations, repeat substeps i to iv for the other
battery return wire.
Step 3. Make the battery connection(s) to the disconnect device (Figure 23, key item 3):
i. Run a length of wire from the disconnect device to the router. Prepare the router
end of the wire by attaching a ring lug (see Figure 22). Prepare the wire at the
disconnect device according to local safety practices.
ii. Attach the battery wire to the correct battery terminal on the router. For
–48 VDC systems, use the –Batt terminal. Tighten to a torque of 8 to 10 lbf-in
(0.9 to 1.13 N
.
m) maximum.
iii. Attach the battery wire to the disconnect device.
iv. For redundant power supply configurations, repeat substeps i to iii for the other
battery wire.
Step 4. Check that the DC supply wiring is correct.
Step 5. Install the SFPs. See SFPs.
.
Note: The minimum AWG power conductor for the DC input connections must be based on
the application, and on the local codes, practices, and regulations applicable for the region.