User guide

About this Guide
Summit WM20 User Guide, Software Release 4.212
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
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
AC power cord.
● The wall outlet must be installed near the equipment and be easily accessible for quick disconnect.
● Make sure the voltage and frequency of your power outlet match the equipment’s system’s electrical
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
momentary increases or decreases in electrical power.
● For hot-swappable power supplies, do not slam PSU into the bay.
● If multiple power supplies are used in a controller, connect each power supply to different,
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 90 – 264 V~
Nominal Input Voltage/Hz 115 V~/60Hz & 230 V~/50Hz
Line Frequency Range 47 – 63 Hz
Nominal Input Current 4.0 A @ 115 V~ (low-line)
2.0 A @ 230 V~ (high-line)
Maximum In-Rush Current 30A @ 120V~ / 60A @ 240V~ (Cold Start)
Efficiency 70% typical at 110VAC, 74% typical at 220V~ (Fill Load)
Power Supply Input Socket IEC 320 C14
Power Cord Input Plug IEC 320 C13
Power Cord Wall Plug Please refer to “Power Supply Cords Selection” on page 13.
Minimum Wire Size 18 AWG (.82mm2) copper stranded