Extreme Networks BlackDiamond 10808, Руководство по установке оборудования

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Extreme Networks 700/1200 W AC PSU
Extreme Networks Consolidated ExtremeXOS Hardware Installation Guide
151
WARNING!
Always be sure that the source outlet is properly grounded before plugging the AC power cord into the Extreme
Networks 700/1200 W AC PSU.
Fuse
The Extreme Networks 700/1200 W AC PSU line and neutral legs are both fused. Power to the switch
may still be live if the neutral fuse is open. This is not a field operator replaceable fuse. In the event of
failure, immediately return the Extreme Networks 700/1200 W AC PSU for a complete replacement.
WARNING!
Field operators must not attempt to configure or replace fuses in Extreme Networks 700/1200 W AC PSUs! In the
event of failure, immediately return the defective Extreme Networks 700/1200 W AC PSU for a complete
replacement.
Specifications
The 700/1200 W AC PSU functions from 90 V to 264 V and 47 Hz to 63 Hz AC Input. Each PSU
provides 700 W to the system if the AC input is in the 110 V low-line output power range and 1200 W
to the system if the AC input is in the 220 V high-line output power range.
A greater number of PSUs are needed to support the load if the low-line power range is used to power
the switch. The software determines the maximum available power required for the switch and enables
the modules accordingly.
When a mixture of AC PSU types, the 600/900 W AC PSU and the 700/1200 W AC PSU, are powered
on in the same BlackDiamond 8806 chassis, all PSUs will be budgeted “down” to the lower powered
600/900 W AC output values to avoid PSU shutdown due to over-current. ExtremeXOS optimizes total
system power, avoiding the possibility of over-current, by deciding whether to budget down PSUs with
220 V AC inputs when PSUs with 110 V AC inputs are present, or to keep 110 V AC PSUs disabled.
CAUTION
Even though this process avoids the possibility of over-current, an I/O module may be powered off if a 600/900 W
AC PSU is added to a BlackDiamond 8806 system running in the following configuration:
● System is powered by three 700/1200 W AC PSUs at 220 V AC.
● System includes four or more PoE I/O modules with a PoE power requirement that falls between 2391 W and
2438 W of inline power.
To avoid causing an I/O module to be powered off, do not add a 600/900 W AC PSU to an existing BlackDiamond
8806 system running in the configuration listed above. Extreme Networks also recommends that you avoid mixing
220 V AC and 110 V AC inputs when both PSU types, 600/900 W and 700/1200 W, are present. When a
combination of 220 V AC and 110 V AC inputs is applied, ExtremeXOS is designed to optimize total chassis power
for each individual PSU type but not for a mixture of PSU types.