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Cisco ASR 1000 Series Aggregation Services Routers Hardware Installation Guide
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Chapter 7 Cisco ASR 1004 Router Overview and Installation
Connecting Power to Cisco ASR 1004 Router
Note
–48 VDC input power cables must be connected to the PDU terminal studs in the proper
positive (+) and negative (–) polarity. In some cases, the –48 VDC cable leads are labeled,
which is a relatively safe indication of the polarity. However, you must verify the polarity
by measuring the voltage between the –48 VDC cable leads. When making the measurement,
the positive (+) lead and the negative (–) lead must always match the (+) and (–) labels on
the PDU.
•
A ground cable is required for each –48 VDC PDU. We recommend that you use at least 6-AWG
multistrand copper wire. This wire is not available from Cisco Systems; it is available from any
commercial cable vendor.
The ground wire cable lug should be dual-hole (as shown in
Figure 7-19
) and able to fit over M6
terminal studs at 0.625-inch (15.88-mm) centers. Recommended lug terminal wire size Panduit part
number:
–
LCD8-14A-L for 8AWG wire size
–
LCD6-14A-L for 6AWG wire size
Note
To avoid hazardous conditions, all components in the area where –48 VDC input power is
accessible must be properly insulated. Therefore, before installing the –48 VDC cable lugs,
be sure to insulate the lugs according to the manufacturer’s instructions.
Warning
When you install the unit, the ground connection must always be made first and disconnected last.
Statement 1046
To connect the Cisco ASR 1004 Router DC power supply, follow these steps:
Step 1
Make certain that the chassis grounding is connected before you begin installing the –48 VDC power
supply.
Step 2
Locate the terminal block and remove the plastic cover.
a.
Unscrew and remove the two screws.
b.
Slide the plastic cover off of the terminal block.
Step 3
On the –48 VDC power supply terminal block, locate the
GND
connection which must be connected first
and follow these steps:
a.
Using the two-hole grounding lug, replace the washers and Kepnut screw in the following order.
–
Flat washer
–
Grounding cable lug
–
Kepnut screw
b.
Tighten the Kepnut screws (use the screwdriver to tighten the screw in the terminal block to a torque
of 8 in-lbs / 2 per.) on the power supply studs.