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Power Cord Requirements
Power Cord Requirements
Most Extreme Networks switches do not ship with power cords. See
information on selecting and purchasing the correct AC power cords for use with
specific Extreme Networks equipment.
UPS (Uninterruptible Power Supply) Requirements
A UPS (uninterruptible power supply) is a device that sits between a power supply
(such as a wall outlet) and a device (such as a switch) to prevent outages, sags, surges,
and bad harmonics from adversely affecting the performance of the device.
A UPS traditionally can perform the following functions:
•
Absorb relatively small power surges.
•
Smooth out noisy power sources.
•
Continue to provide power to equipment during line sags.
•
Provide power for a period of time after a blackout has occurred.
In addition, some UPS devices or UPS-plus-software combinations provide the
following functions:
•
Automatically shut down equipment during long power outages.
•
Monitor and log power supply status.
•
Display the voltage (current draw) of the equipment.
•
Restart equipment after a long power outage.
•
Display the voltage currently on the line.
•
Provide alarms on certain error conditions.
•
Provide short-circuit protection.
Select a UPS
To determine UPS requirements for your switch, answer these questions:
•
What are the amperage requirements?
•
What is the longest potential time period that the UPS would be required to supply
backup power?
•
Where will the UPS be installed?
•
What is the maximum transition time that the installation will allow? (See
Suitable UPS Transition Time
Note
Use a UPS that provides online protection.
Calculate Volt-Amperage Requirements
To determine the size of UPS that you need:
1. Locate the voltage and amperage requirements for each piece of equipment.
These numbers are usually found on a sticker on the back or bottom of your
equipment.
32
ISW Series Managed Industrial Ethernet Switch Hardware Installation Guide
on page 33.)
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