Cisco ASR 1000 series Hardware Installation Manual page 201

Chapter 7 Cisco ASR 1004 Router Overview and Installation
Note
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
terminal studs at 0.625-inch (15.88-mm) centers. Recommended lug terminal wire size Panduit part
number:
–
–
Note
When you install the unit, the ground connection must always be made first and disconnected last.
Warning
Statement 1046
To connect the Cisco ASR 1004 Router DC power supply, follow these steps:
Make certain that the chassis grounding is connected before you begin installing the –48 VDC power
Step 1
supply.
Locate the terminal block and remove the plastic cover.
Step 2
Unscrew and remove the two screws.
a.
Slide the plastic cover off of the terminal block.
b.
On the –48 VDC power supply terminal block, locate the GND connection which must be connected first
Step 3
and follow these steps:
Using the two-hole grounding lug, replace the washers and Kepnut screw in the following order.
a.
–
–
–
Tighten the Kepnut screws (use the screwdriver to tighten the screw in the terminal block to a torque
b.
of 8 in-lbs / 2 per.) on the power supply studs.
OL-13208-11
–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.
LCD8-14A-L for 8AWG wire size
LCD6-14A-L for 6AWG wire size
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.
Flat washer
Grounding cable lug
Kepnut screw
Cisco ASR 1000 Series Aggregation Services Routers Hardware Installation Guide
Connecting Power to Cisco ASR 1004 Router
Figure 7-19) and able to fit over M6
7-27