Ac-Powered Chassis; Dc-Powered Chassis; Chapter 4 Installing Power Component - Cisco NCS 4016 Installation Manual

Power Connection Guidelines
Proper grounding is necessary to avoid damage from lightning and power surges. See the
Caution
Supplemental Unit Bonding and Grounding Guidelines" section on page 4-6
requirements.

AC-Powered Chassis

AC power modules operate in the input range of 180 VAC to 264 VAC, 47 to 63 Hz (nominal input level
of 200 to 240 VAC).
Power redundancy requirements vary based on the system configuration (number and type of line cards,
etc.). AC-powered systems are 2N protected. A minimum of two power supplies are required for
redundant operation.
Each of the AC power inputs requires a separate dedicated branch circuit. Note that the circuit breaker
and fuse lockout procedures should follow the rules and regulations in the National Electrical Code
(NEC) and any local codes. For a list of the nominal and acceptable value ranges for source AC power,
see
The Cisco NCS 4016 chassis supports two types of AC power cords: International and NEMA (USA).
Figure 4-1
Figure 4-2
Before connecting AC input power cords to the power system, make sure that the power cords are not
Note
energized.

DC-Powered Chassis

Use a 6 AWG wire rated 75°C minimum, for DC power modules connection. The system accepts a
nominal input voltage of -48 VDC or -60VDC, with an operational tolerance range of -40.5 to -72 VDC.
One dedicated, commensurately rated DC power source is required for each power module connection.
Each power feed shall be provided with a double pole breaker, rated not more than 60A, with medium
delay.
Cisco Network Convergence System 4000 Series Hardware Installation Guide
4-2
Table B-2.
International AC Power Cord (Cisco PID NCS4K-AC-CBL-IEC)
NEMA AC Power Cord (Cisco PID NCS4K-AC-CBL-NEMA)
Chapter 4 Installing Power Components
"NEBS
for grounding