Power Guidelines And Requirements - Cisco WS-C2950-24 Installation Manual

Power Guidelines and Requirements

Power Guidelines and Requirements
Check the power at your site to ensure that you are receiving "clean" power (free of spikes and noise).
Install a power conditioner if necessary.
The AC power supply includes the following features:
•
•
Table 2-1
Table 2-1 Power Requirements for Cisco 2900 and 3900 Series Routers
Router
Cisco 2901
1
Cisco 2901 with PoE
Cisco 2911
Cisco 2911 with PoE
Cisco 2921
Cisco 2921 with PoE
Cisco 2951
Cisco 2951 with PoE
Cisco 2911, 2921, and
2951
Cisco 3925
Cisco 3925E
Cisco 3925 with PoE
Cisco 3925E with PoE
Cisco 3925
Cisco 3925E
Cisco 3945
Cisco 3945E
Cisco 3945 with PoE
Cisco 3945E with PoE
Cisco 3945
Cisco 3945E
1. POE = power over Ethernet
Cisco 2900 Series and 3900 Series Hardware Installation Guide
2-6
Autoselects either 110 V or 220 V operation.
All units include a 6-foot (1.8-meter) electrical power cord. (A label near the power inlet indicates
the correct voltage, frequency [AC-powered systems only], current draw, and power dissipation for
the unit.)
lists power requirements for the Cisco 2900 and 3900 series routers.
Power Source
AC
AC
AC
DC
AC
AC
DC
AC
AC
DC
AC
Backup power:
Cisco RPS-675 Redundant
Power System
AC
AC
DC
AC
AC
DC
Input Power
100 — 240 VAC, 2.0 A, 50 — 60 Hz
100 — 240 VAC, 5.0 A, 50 — 60 Hz
100 — 240 VAC, 2.0 A, 50 — 60 Hz
24 — 60 VDC, 8 A, positive or negative
100 — 240 VAC, 4.0 A, 50 — 60 Hz
100 — 240 VAC, 3.0 A, 50 — 60 Hz
24 — 60 VDC, 12 A, positive or negative 20 — 72 VDC
100 — 240 VAC, 8.0 A, 50 — 60 Hz
100 — 240 VAC, 3.0 A, 50 — 60 Hz
24 — 60 VDC, 12 A, positive or negative 20 — 72 VDC
100 — 240 VAC, 8.0 A, 50 — 60 Hz
100 VAC, 10 A, or 240 VAC, 6 A
100 — 240 VAC, 7.0 A - 3.0 A, 50 — 60
Hz
100 — 240 VAC
24 — 60 VDC
100 — 240 VAC
100 — 240 VAC
24 — 60 VDC
Chapter 2 Preparing for Router Installation
Input Voltage
Tolerance Limits
90 — 264 VAC
90 — 264 VAC
90 — 264 VAC
20 — 72 VDC
90 — 264 VAC
90 — 264 VAC
90 — 264 VAC
90 — 264 VAC
90 — 264 VAC
90 — 264 VAC
90 — 264 VAC
18 — 75 VDC
90 — 264 VAC
90 — 264 VAC
18 — 75 VDC
OL-18712-02