Cisco 3845 Hardware Guide - Page 53

DC Power Connections for Cisco 3825 Routers, a risk of fire and electrical hazards. - bundle

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Power Connections Figure 12 DC Power Connections for Cisco 3825 Routers -DC, input A Return, input A Safety ground Return, input B -DC, input B Return, input A +DC, input A Safety ground +DC, input B Return, input B A+ +B Negative DC input Terminal block A+ +B Positive DC input Terminal block 111752 Figure 13 DC Power Connections for Cisco 3845 Routers Negative DC input 24-60 19-8 A Positive DC input 24-60 19-8 A 117981 Safety ground Negative polarity input 0V (return) Step 6 Install the plastic cover over the terminals. (See Figure 14.) Safety ground 0V (return) Positive polarity input 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 Step 8 Step 9 Organize and bundle the wires using cable ties as shown in Figure 14 or Figure 15. If you are installing a second DC power supply, repeat Step 1 through Step 7 for the second supply (input B). Turn on power to the DC circuit. Be sure to remove tape used to secure the circuit-breaker switch in the OFF position. OL-5970-02 Connecting Cables to Cisco 3800 Series Routers 23

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Power Connections
23
Connecting Cables to Cisco 3800 Series Routers
OL-5970-02
Figure 12
DC Power Connections for Cisco 3825 Routers
Figure 13
DC Power Connections for Cisco 3845 Routers
Step 6
Install the plastic cover over the terminals. (See
Figure 14
.)
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 14
or
Figure 15
.
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.
111752
A
+
B
+
A
+
+
B
Terminal
block
Negative DC input
Positive DC input
Terminal
block
-DC, input B
Return, input B
Safety ground
Return, input A
-DC, input A
Return, input B
+DC, input B
Safety ground
+DC, input A
Return, input A
117981
0V (return)
Negative polarity input
Safety ground
Positive polarity input
0V (return)
Safety ground
24-60
19-8 A
24-60
19-8 A
Positive DC input
Negative DC input