Rackable Systems OmniStor 4700S Series, User Manual

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Chapter 1 - Getting Started
Optional DC Hot Swappable Power Supplies
6
If the power supply cooling fan fails, the Fault LED will illuminate and the alarm will sound.
The power supply also has an amber general Fault LED. If you have a dual power supply
configuration and power is not applied to one of the power supplies, the general Fault LED
is illuminated.
CAUTION:
The DC system must be installed in a restricted access location, in
accordance with the intent of the National Electrical Code. A restricted
access location is defined as an area intended only for qualified or trained
personnel only. Access should be controlled by key lock or access card.
Each power supply has a special cable connector that plugs into the face of the power
supply and mechanically connects to a DC feed system. Refer to the Installation chapter for
cabling procedures.
DC Source Site Requirements
The power feed must be electrically isolated from any AC power source, provide a reliable
connection to earth (battery room positive bus is connected to the grounding electrode),
and capable of providing up to 600 watts of continuous power per feed pair.
Over-current Protection Requirements
Over-current protection devices must be provided as part of each equipment rack. Circuit
breakers must be located between the DC power feed source and the power supplies (two
20 amp double-pole fast trip DC-rated circuit breakers for each power supply).
NOTE:
Over-current protection devices must meet applicable national and local electrical
safety codes and be approved for the intended application.
Electrical Equipment Requirement
Voltage -36 to -72 VDC
Max. Operating Current 13.5 amp to 6.3 amps
Max. Input Surge Current 20.25 amps