Extreme Networks 8800 Series Applicable Industry Standards, Selecting a UPS, UPS Transition Time

Site Preparation

●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.

Selecting 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 your installation will allow?

NOTE

Extreme Networks recommends that you use a UPS that provides online protection.

Calculating Volt-Amperage Requirements

To determine the minimum volt-amperage requirements for your UPS:

1Locate the voltage and amperage requirements for each piece of equipment. These numbers are usually located on a sticker on the back or bottom of your equipment.

2Multiply the numbers together to get Volt-Amps (VA): VA = Volts x Amperes

3Add together the VA from all the pieces of equipment to find the total VA requirement.

To determine the minimum volt-amperage requirements for your UPS, we recommend that you add 30% to the total.

UPS Transition Time

Transition time is the time that is necessary for the UPS to transfer from utility power to full-load battery power. For Extreme Networks products, a transition time of less than 20 milliseconds is required for optimum performance.

Applicable Industry Standards

For more information, see the following ANSI/TIA/EIA standards:

●ANSI/TIA/EIA-568-A—discusses the six subsystems of a structured cabling system.

●ANSI/TIA/EIA-569-A—discusses design considerations.

●ANSI/TIA/EIA-606—discusses cabling system administration.

●ANSI/TIA/EIA-607—discusses commercial building grounding and bonding requirements.

68 BlackDiamond 8800 Series Switches Hardware Installation Guide