Environmental Requirements & Specifications
E F 3 0 1 5 S e t u p G u i d e ( R e v A )
49
• Power circuits and associated circuit breakers must provide sufficient power and
overload protection. To prevent possible damage to the AC power distribution boxes
and other components in the rack, use an external, independent power source that is
isolated from large switching loads (such as air conditioning motors, elevator motors,
and factory loads).
B.2.2
Site Wiring and DC Power Requirements
The following are required for all installations using DC power supplies:
.
• All DC mains and supply conductors to power distribution boxes for the rack-mounted
system must comply with local, national, or other applicable government codes and
regulations.
• Ensure that the voltage of your power source matches the voltage inscribed on the
equipment’s electrical label.
• To ensure redundancy, provide two separate power sources for the enclosures. These
power sources must be independent of each other, and each must be controlled by a
separate circuit breaker at the power distribution point.
• The system requires voltages within minimum fluctuation. The customer-supplied
facilities’ voltage must maintain a voltage within the range specified on the equipment’s
electrical rating label. The customer facilities must also provide suitable surge
protection.
• Site wiring must include an earth ground connection to the DC power source.
Grounding must comply with local, national, or other applicable government codes and
regulations.
• Power circuits and associated circuit breakers must provide sufficient power and
overload protection.
B.2.3
Weight and Placement Guidelines
for detailed size and weight specifications.
• The weight of an enclosure depends on the number and type of modules installed.
• Ideally, use two people to lift an enclosure. However, one person can safely lift an
enclosure if its weight is reduced by removing the power supply modules and disk drive
modules.
• Do not place enclosures in a vertical position. Always install and operate the enclosures
in a horizontal orientation.
• When installing enclosures in a rack, make sure that any surfaces over which you might
move the rack can support the weight. To prevent accidents when moving equipment,
especially on sloped loading docks and up ramps to raised floors, ensure you have a
Measurement
Rating
Input power requirements
-34 to -72VDC, -48/-60V nominal
Maximum input power
436W maximum continuous
Heat dissipation
1,488 BTUs/hour
