Cisco CATALYST 6509E 9 SLOT 15U CHASSIS NO POWER SUPPLY NO FAN TRAY Specification Guide

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Catalyst 6500 Series Switches Installation Guide
OL-5781-04
Chapter 1      Product Overview
  Catalyst 6503 Switch
Power Entry Module (PEM)
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).
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.
Note
For Catalyst 6503 and Catalyst 6503-E chassis that are equipped 
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.
1.
PEMs are required for Catalyst 6503 and Catalyst 6503-E switches only.
Table 1-1
Catalyst 6503 Switch Features (continued)
Feature
Description