To use the 1200 W DC power supply, you need a -48 V DC power source capable of providing 50 A
dedicated power to each 1200 W DC power supply installed in the switch.
Note
Extreme Networks does not recommended using the 1200 W DC power supply in
combination with any Extreme Networks AC power supply in the same BlackDiamond 8800
Series system. Extreme Networks recommends that DC and AC power supply units not be
used together in the same BlackDiamond switch.
For central DC power connections, the 1200 W DC power supply is intended to be installed
only in restricted access locations (dedicated equipment rooms, equipment closets, or the
like) in accordance with Articles 110-16, 110-17, and 110-18 of the National Electric Code, ANSI/
NFPA-70.
Warning
Field operators must not attempt to open the 1200 W DC power supply enclosure for any
reason; the power supply does not contain user-serviceable parts. In the event of failure,
return the defective 1200 W DC power supply to Extreme Networks for repair or replacement.
Minimum Software Required
The MSM installed in your BlackDiamond 8800 Series switch must be running ExtremeXOS version 11.3
or later for the system to recognize the DC power supply.
LEDs
The front panel of the 1200 W DC power supply provides the status LEDs listed in
the following table
.
Table 18: LEDs on the Extreme Networks 1200 W DC Power Supply
Power Supply Condition
Power Green Predictive Fail
Amber
Fail Amber
Power supply DC outputs working normally
On
Off
Off
DC input power present/standby output on
Blinking
Off
Off
Current limit on 48 VDC output
On
Off
Blinking
Predictive failure
On
Blinking
Off
No input power to this power supply only
Off
Off
On
No input power to any power supply
Off
Off
Off
Power supply failure
Off
Off
On
Power Supplies for BlackDiamond 8800 Series Switches
BlackDiamond 8800 Hardware Install Guide
46