Cisco ASR 1002-X Overview And Installation page 36

Connecting the +24 VDC Power Supply to the Router
Step 3
Using a wire stripper, strip approximately 0.55 inch (1.39 cm) from the negative, positive, and ground lead.
Step 4 Insert the stripped end of the ground lead all the way into the ground lead receptacle on the –48 VDC input power
supply, and tighten the receptacle screw using a 3.5 mm flat-blade screwdriver to a torque of 0.5 to 0.6 Nm.
Step 5
Insert the stripped end of the positive lead all the way into the positive lead receptacle and tighten the receptacle screw
using the same 3.5mm flat-blade screwdriver.
Step 6
Repeat this step for the negative lead.
Note Ensure the entire stripped end of each lead is inserted all the way into its receptacle. If any exposed wire at
the stripped end of a lead is visible after inserting the lead into its receptacle, remove the lead from the
receptacle, use the wire stripper to cut the stripped end of the lead, and repeat Step 3 through Step 6.
Step 7
After tightening the receptacle screw for the ground, positive, and negative –48 VDC-input leads, use a cable tie to
secure the three leads to the power supply faceplate, as shown in
Supply Terminal Block Cable Connections, on page
leads to the power supply faceplate, leave a small service loop in the ground lead to ensure that the ground lead is the
last lead to disconnect from the power supply if a great deal of strain is placed on all three leads, as shown in
24: Cisco ASR 1002-X Router –48 VDC Power Supply Terminal Block Cable Connections, on page
Caution Ensure that the ground lead wire has a service loop before you tie wrap the lead wires to prevent the ground
from being disconnected.
Step 8 Connect the ground, positive, and negative leads to the power source.
Step 9
Turn the branch source breaker on.
Step 10 Place the –48 VDC Standby switch in the On (|) position. The power supply LEDs light when power is supplied to the
router.
What to do next
You have completed the procedure for connecting a –48 VDC power supply in the Cisco ASR 1002-X Router.
Connecting the +24 VDC Power Supply to the Router
The +24 VDC power supply uses a spring-loaded terminal block. The input terminal block requires 8 AWG
multistrand wiring to support input current. Features are provided for strain relieving the input wires from the
terminal block on the front panel. The recommended branch circuit breaker for the Cisco ASR 1002-X Router
+24 VDC power supply is a 40 A UL-listed circuit breaker.
Before you begin, read these important notices about the +24 VDC power supply:
• The labeling displays +27 VDC INPUT. This labeling describes the nominal voltage provided at a cell
• Observe the polarity location. Unlike the polarity labels of the –48 VDC power supply (ground, positive,
• The ground (GND) lead is always installed first and removed last.
• The +24 VDC power supply uses a spring-loaded terminal block; therefore, have the recommended
• Review the diagrams to see how the wire is stripped and how the screwdriver is inserted at an angle into
Cisco ASR 1002-X Router Overview and Installation
36
site.
and negative), the polarity labels on the +24 VDC are ground, negative, and positive, as shown in
25: +24 VDC Power Supply for the Cisco ASR 1002-X Router Components, on page 37
left as they appear on the actual power supply unit.
screwdriver size available.
the terminal block.
Cisco ASR 1002-X Router Overview and Installation
Figure 24: Cisco ASR 1002-X Router –48 VDC Power
35. When securing the ground, positive, and negative –48 VDC-input
Figure
35.
Figure
from right to