Chapter 2 Site Planning
2-3
2.3
Environmental Requirements
2.3.1
Electromagnetic Compatibility
The following is required for all installations:
■
All AC mains and supply conductors to power distribution boxes for both the rack-
mounted array and the desktop array must be enclosed in a metal conduit or
raceway when specified by local, national, or other applicable government codes
and regulations.
■
The supply conductors and power distribution boxes (or equivalent metal enclosure)
must be grounded at both ends.
■
The supplied arrays require voltages within minimum fluctuation. The facilities
voltage supplied by the customer must maintain a voltage with not more than (+/–)
5 percent fluctuation. The customer facilities must provide suitable surge protection.
2.4
Electrical and Power Specifications
The FC, SATA, and SATA SE arrays require two independent power sources. Each
array has two power supply and two fan modules for redundancy.
Each AC array requires two 115 VAC/15A or two 240 VAC service outlets. All AC
power supplies are autoranging and are automatically configured to a range of 90–264
VAC and 47–63 Hz. There is no need to make special adjustments.
Each DC array requires two –48 VDC service outlets and has an input voltage range of
–36 VDC to –72 VDC.
Note –
To ensure power redundancy, connect the two array power modules to two
separate circuits (for example, one commercial circuit and one UPS).
Table 2-1
Environmental Specifications
Operating
Nonoperating
Altitude
To 9000 feet (3000 meters)
To 36,000 feet (12,000 meters)
Humidity
10% to 90% RH at 80
°
F
(27
°
C) max wet bulb
(noncondensing)
93% RH, 100
°
F (38
°
C) max wet
bulb temperature (noncondensing)
Temperature
Standalone
Rack
41
°
F (5
°
C) to 104
°
F (40
°
C)
41
°
F (5
°
C) to 95
°
F (35
°
C)
–40
°
F (–40
°
C) to +149
°
F (+65
°
C)
–40
°
F (–40
°
C) to +149
°
F (+65
°
C)
