AssuredSAN 4004 Series Setup Guide 131
Site wiring and DC power requirements
The following are required for all installations using DC power supplies:
.
The 4004 Series system is suitable for installation as part of the Common Bonding Network (CBN). The
system’s Battery Return (BR) Input Terminals are considered to be an Isolated DC Return (DC-I).
The following criteria are required for all installations:
• 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.
Weight and placement guidelines
Refer to Physical requirements on page 133 for detailed size and weight specifications.
• Refer to the rackmount bracket kit installation sheet pertaining to your product for guidelines about
installing enclosures into the rack.
• When installing enclosures into the rack, populate from the bottom position and move upwards for
optimal rack stability.
• 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 a 2U12 or 2U24
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
(level) 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 sufficient number of helpers. Remove obstacles
such as cables and other objects from the floor.
• To prevent the rack from tipping, and to minimize personnel injury in the event of a seismic occurrence,
securely anchor the rack to a wall or other rigid structure that is attached to both the floor and to the
ceiling of the room.
Electrical guidelines
• These enclosures work with single-phase power systems having an earth ground connection. To reduce
the risk of electric shock, do not plug an enclosure into any other type of power system. Contact your
facilities manager or a qualified electrician if you are not sure what type of power is supplied to your
building.
Table 45 Power requirements - DC Input
Measurement Rating for 2U24/2U12 Rating for 4U56
Input power requirements -40 to -72 VDC, -48/-60 V nominal -40 to -72 VDC, -48/-60 V nominal
Maximum input power 475 W maximum continuous 1,027 W maximum continuous
Heat dissipation 1,622 BTUs/hour 3,507 BTUs/hour
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