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About this Guide
Installing Power Supply Units
WARNING!
Ensure that the following requirements are satisfied when installing all Extreme Networks power supplies. See
Installation instructions of power supply unit (PSU) in questions for ratings and power requirements.
Make sure to satisfy the following requirements:
Plug power supplies only into properly grounded electrical outlets to help prevent electrical shock
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and comply with international safety standards.
Use only power cords that are certified for use within the country of use. Do not attempt to modify
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AC power cord.
The wall outlet must be installed near the equipment and be easily accessible for quick disconnect.
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Make sure the voltage and frequency of your power outlet match the equipment's system's electrical
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ratings. The building and/or power source must provide overload protection.
Use a surge suppressor, line conditioner, or uninterruptible power supply to protect the system from
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momentary increases or decreases in electrical power.
For hot-swappable power supplies, do not slam PSU into the bay.
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If multiple power supplies are used in a controller, connect each power supply to different,
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independent power sources. If a single power source fails, it will affect only that power supply to
which it is connected. If all the power supplies on a single controller are connected to the same
power source, the entire controller is vulnerable to a power failure.
Power Input Requirements
AC Power Supply Input (Per input):
Voltage Input Range
Nominal Input Voltage/Hz
Line Frequency Range
Nominal Input Current
Maximum In-Rush Current
Efficiency
Power Supply Input Socket
Power Cord Input Plug
Power Cord Wall Plug
Minimum Wire Size
12
90 – 264 V~
115 V~/60Hz & 230 V~/50Hz
47 – 63 Hz
4.0 A @ 115 V~ (low-line)
2.0 A @ 230 V~ (high-line)
30A @ 120V~ / 60A @ 240V~ (Cold Start)
70% typical at 110VAC, 74% typical at 220V~ (Fill Load)
IEC 320 C14
IEC 320 C13
Please refer to
"Power Supply Cords Selection" on page
18 AWG (.82mm2) copper stranded
Summit WM20 User Guide, Software Release 4.2
13.
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