Dot Hill Systems 4824 - Electrical Requirements; Site Wiring and Power Requirements; Power Cable Requirements

136 Specifications and requirements
*Temperature is de-rated by 2ºC (3.6ºF) for every 1 km (3,281) feet above sea level.
NOTE: For additional information about Telco and ruggedized products, see Dot Hill’s web site:
https://www.dothill.com
.
Electrical requirements
Site wiring and power requirements
Each enclosure has two power supply modules for redundancy. If full redundancy is required, use a
separate power source for each module.
The AC power supply unit in each power supply module is auto-ranging and is automatically configured to
an input voltage range—described per chassis in Table 44 on page 130—with an input frequency of
50–60 Hz. The power supply modules meet standard voltage requirements for both U.S. and international
operation. The power supply modules use standard industrial wiring with line-to-neutral or line-to-line
power connections.
The 2U24/2U12 enclosures and the high-density 4U56 enclosure support DC power supplies as an
alternative to using AC power supplies. See Table 45 on page 131 for specific information pertaining to
DC power supplies.
Power cable requirements
Each power cable connects one of the power supply modules to an independent, external power source.
To ensure power redundancy, connect the two power cables to two separate circuits; for example, to one
commercial circuit and one uninterruptible power source (UPS).
Table 49 Non-operating environmental specifications
Specification Range
Altitude To 12,000 meters (39,370 feet)
Temperature -40ºC to 70ºC (-40ºF to 158ºF)
Humidity Up to 93% RH @ 104ºF (40ºC) non-condensing
Shock 15.0 g, 11 ms, ½ sine pulses, X, Y, Z [2U12/2U24/2U48]
1” drop to hard unyielding surface per NEBS GR-63-CORE
Unpackaged Equipment Shock Criteria (§4.3.2) [4U56]
Vibration (Shaped-spectrum)
2.8 Hz to 365.4 Hz, 0.852 G
rms
total (horizontal)
2.8 Hz to 365.4 Hz, 1.222 G
rms
total (vertical)