Cisco 6509 - Catalyst Chassis Switch Installation Manual page 28

Catalyst 6503 Switch
Table 1-1 Catalyst 6503 Switch Features (continued)
Feature
Power Entry Module (PEM)
Power Supplies
1. PEMs are required for Catalyst 6503 and Catalyst 6503-E switches only.
Catalyst 6500 Series Switches Installation Guide
1-4
Description
1
A PEM is required for each installed power supply.
•
PEM-15A-AC (PEM for 950 W AC-input power supplies).
–
– PEM-DC/3 (PEM for 950 W DC-input power supplies).
– PEM-20A-AC+ (PEM for 1400 W AC-input power supplies).
Supports one or two power supplies. The following power supplies are
•
supported:
PWR-950-AC (950 W AC-input power supply).
–
PWR-950-DC (950 W DC-input power supply).
–
PWR-1400-AC (1400 W AC-input power supply).
–
Installed power supplies can be of different wattage ratings. Installed
•
power supplies can be both AC-input, both DC-input, or one AC-input
and one DC-input. Power supplies can be configured in either redundant
or non-redundant mode.
For Catalyst 6503 and Catalyst 6503-E chassis that are equipped
Note
with DC-input power supplies, the system (NEBS) ground serves as
the primary safety ground and must be installed. The DC-input
power supplies for these chassis do not have a separate ground.
All Catalyst 6500 series AC-input power supplies require single-phase
•
source AC. Source AC can be out of phase between multiple power
supplies or multiple AC-power plugs on the same power supply because
all AC power supply inputs are isolated.
• Single power supplies are installed in the lower power supply bay. The
second power supply is installed in the upper power supply bay.
Chapter 1 Product Overview
OL-5781-04