Connecting Power To A Dc-Powered Router - Cisco ASR 9000 Series Installation Manual

Connecting Power to a DC-Powered Router

Figure 192: Typical AC Power Connections to an AC Power Tray Version 1 Power System
Figure 193: Typical AC Power Connections to an AC Power Tray Version 2 and Version 3 Power System
Step 6 Plug the other end of the AC power cord into the AC source receptacle.
Step 7
Proceed to the
Connecting Power to a DC-Powered Router
This section contains the procedures to connect the DC source power cables to a DC-powered router.
The color coding of source DC power cable leads depends on the color coding of the site DC power source.
Because there is no color code standard for source DC wiring, you must be sure that power source cables are
connected to the power module with the proper positive (+) and negative (–) polarity:
• In some cases, the source DC cable leads might have a positive (+) or a negative (–) label. This is a
• Green (or green and yellow) cable typically indicates that it is a ground cable.
Caution
DC power modules contain circuitry to trip the breaker on the power module if the power module detects a
reverse polarity condition. No damage should occur from reverse polarity, but you should correct a
reverse-polarity condition immediately.
Cisco ASR 9000 Series Aggregation Services Router Hardware Installation Guide
192
Powering On the Router, on page
relatively safe indication of the polarity, but you must verify the polarity by measuring the voltage between
the DC cable leads . Be sure that the positive (+) and negative (–) cable leads match the positive (+) and
negative (–) labels on the power module when making the measurement.
Installing Cards and Modules in the Chassis
195.