Cisco 6503 - Catalyst Firewall Security Sys Installation Manual page 280

Removing and Installing the DC-Input Power Supplies
b. From the right side of the power supply, connect each of the DC-input wires to the terminal block
(Figure 4-47
Note
Note
Note
When installing the unit, always make the ground connection first and disconnect it last. Statement 42
Warning
Caution To prevent a short circuit or shock hazard after wiring the DC-input power supply, reinstall the terminal
block covers.
If you are installing a previously-wired IPM, insert the IPM firmly into the power supply and tighten the
Step 12
IPM captive screws. (See
Figure 4-54 Inserting Previously-Wired IPM (2700W DC-input shown)
Catalyst 6500 Series Switches Installation Guide
4-74
and Figure 4-53) in this order:
Negative (-)
Positive (+)
When you tighten the terminal nuts, make sure they are snug. Do not over tighten them.
Recommended torque strength is 20 inch-pounds. Over tightening the terminal nuts can break
the terminal block (Maximum torque: 36 inch-pounds).
For proper 6000W DC-input redundant power configuration, all four pairs of input wires for one
6000W DC-input power supply must come from the same battery system (A feed); all four pairs
of input wires for the other 4000W DC-input power supply must come from another battery
system (B feed).
For multiple DC input power supply, each DC input must be protected by dedicated circuit
breaker or fuse. The circuit breaker or fuse should be sized according to the power supply input
rating and local or national electrical code requirements.
Figure 4-54.)
CIS CO SY
ST EM S, INC
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2
3
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Chapter 4 Removal and Replacement Procedures
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