3-27
Cisco 2900 and 3900 Series Hardware Installation
OL-18712-01
Chapter 3 Installing and Connecting the Router
Connecting Power
Figure 3-27 DC Power Connections for Cisco 3925 and 3925-NOVPN Routers
Figure 3-28 DC Power Connections for the Cisco 3945 and 3945-NOVPN Routers
Step 6
Install the plastic cover over the terminals. (See Figure 3-29.)
Warning
The safety cover is an integral part of the product. Do not operate the unit without the safety cover
installed. Operating the unit without the cover in place will invalidate the safety approvals and pose
a risk of fire and electrical hazards.
Statement 117
Step 7
Organize and bundle the wires using cable ties as shown in Figure 3-29 or Figure 3-30.
Step 8
If you are installing a second DC power supply, repeat Step 1 through Step 7 for the second supply (input
B).
Step 9
Turn on power to the DC circuit. Be sure to remove tape used to secure the circuit-breaker switch in the
OFF position.
279995
PE
+
Negative DC input
PE
+
Positive DC input
0V (return)
Negative polarity input
Safety ground
Positive polarity input
0V (return)
Safety ground
279995
PE
+
Negative DC input
PE
+
Positive DC input
0V (return)
Negative polarity input
Safety ground
Positive polarity input
0V (return)
Safety ground
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