Chapter 4 Installation and Maintenance
Removing and Replacing a Power Supply Unit
Cisco SCE 2000 4xGBE Installation and Configuration Guide
4-14 OL-7824-04
Note Simple Network Management Protocol (SNMP) monitors the activity of the power supplies. In most
cases when a power supply problem occurs, an SNMP trap is sent in SNMP and the appropriate
message is posted on the SCE 2000 CLI.

Power Supply Specifications

The following table lists the AC-input and DC-input power supply specifications for the SCE
2000 platform:
Table 4-7 SCE 2000 Power Supply Specifications
AC-input power 200W maximum
AC-input voltage rating 100 to 240 VAC
AC-input current rating Rated for 4.5A when Vin = 100 VAC or 2A when Vin = 200 VAC
AC-input frequency rating 50 to 60 Hz
AC-input cable 18 AWG three-wire cable, with a three-lead IEC-320 receptacle on
the power supply end, and a country-dependent plug on the power
source end.
DC-input power 200W maximum
DC-input voltage rating –48/-60 VDC no minal (–36 to–72 VDC supply tolerance)
DC-input current rating 7A at –48 VDC
DC-input cable 12 AWG or 2.5-mm copper installation wire with hex or loop
connectors
DC-input circuit breaker One Fast 10A for each power supply unit
Note For AC-input power, we recommend powering the SCE 2000 platform from a 120 VAC, 15A receptacle
U.S. (240 VAC, 10A international) at the power source.
Removing and Replacing a Power Supply Unit
The procedures for removing and replacing the AC-input or DC-input power supply are explained
in the following sections:
• Powering Down the Power Supply Unit and Disconnecting Input Power (on page 4-15)
• Removing the Power Supply Unit (on page 4-16)
• Replacing the Power Supply Unit (on page 4-17)
• Reconnecting the Power (on page 4-17)