AC Power Connections
7705 SAR-M Chassis Installation Guide 105
Required tools and hardware:
• one or two pigtail cords (two cords are required for redundant power configurations)
• one or two AC power converters (two AC power converters are required for
redundant power configurations)
• heat shrink tubing
•heat gun
• torque driver for slot screws
For -48 VDC Installations
Follow these steps to wire and connect an AC power converter to a –48 VDC system (see
Figure 27):
Step 1. Slide the shrink tubing onto the pigtail cord.
Step 2. Attach the 6-pin connector to the DC output on the AC power converter and push
until the lock mechanism clicks into place.
Step 3. Slide the shrink tubing over the connection between the AC power converter and
the pigtail cord. Heat the tubing with the heat gun to shrink it such that it forms a
tight protective covering over the connections.
Step 4. Attach the Red battery return wire to the +Batt terminal. Tighten to a torque of
8 to 10 lbf-in (0.9 to 1.13 N
.
m) maximum.
Step 5. Attach the Black battery wire to the –Batt terminal. Tighten to a torque of
8 to 10 lbf-in (0.9 to 1.13 N
.
m) maximum.
Step 6. For redundant power supply configurations, repeat steps 1 to 5 for the other pigtail
cord.
Step 7. Plug the AC power converter cord into an AC power supply.
Step 8. Check that the AC supply wiring is correct.
Step 9. Install the SFPs. See SFPs.
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