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WARNING:
The switch is pluggable type A equipment installed in a
restricted-access location. It has a separate protective earthing terminal
provided on the chassis in addition to the grounding pin of the power supply
cord. This separate protective earth terminal must be permanently connected
to earth ground. See “Connecting Earth Ground to a J-EX Series Switch” on
page 129.
Related
Documentation
AC Power Supply in a J-EX8200 Switch on page 34
•
•
AC Power Electrical Safety Guidelines for J-EX Series Switches on page 238
•
AC Power Disconnection Warning for J-EX Series Switches on page 239
•
General Electrical Safety Guidelines and Warnings for J-EX Series Switches on page 235
•
Connecting AC Power to a J-EX8200 Switch on page 130
Calculating Power Requirements for a J-EX8208 Switch
Use the information in this topic to calculate power consumption, system thermal output,
and number of power supplies required for different J-EX8208 switch configurations.
Before you begin these calculations:
•
Ensure you understand the different switch configurations. See “J-EX8208 Switch
Configurations” on page 6.
•
Ensure that you know the power requirements of different switch components. See
“Power Requirements for J-EX8208 Switch Components” on page 76.
This topic describes these tasks:
•
Calculating the Power Consumption of Your J-EX8208 Switch Configuration on page 79
•
Calculating System Thermal Output for Your J-EX8208 Switch
Configuration on page 81
•
Calculating the Number of Power Supplies Required for Your J-EX8208 Switch
Configuration on page 81
Calculating the Power Consumption of Your J-EX8208 Switch Configuration
Use the following procedure to determine the maximum power you need to supply to
the switch. To calculate maximum system power consumption, you first determine the
combined maximum internal power requirements of all the switch components and then
divide this result by the power supply efficiency.
To calculate maximum system power consumption:
1.
Determine the maximum power consumption of the chassis components other than
the line cards:
79
Chapter 7: Planning Power Requirements
Содержание PowerConnect J-8208
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