Dell PowerVault MD3220i Series Technical Manualbook - Page 36

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Dell PowerVault MD3220i Series Technical Manualbook
DELL PowerVault MD3200i/MD3220i Technical Guide Book
Power Supply Specifications
Table 6.
AC Characteristics
INPUT PARAMETER
Input Voltage Range
Input Frequency
Peak Inrush Current
Power Factor over full AC input range
Minimum Efficiency measured 20%, 50% and
80% output load over full range of AC input and
environmental conditions
Peak Output Power

Thermal management

The cooling system for the enclosure is designed to allow all components (power supplies, RAID
controllers, HDDs, SSDs etc.) to meet their full operating specifications. There may be up to four fans
in each power supply/fan module. This configuration provides N+1 fan redundancy, meaning that the
enclosure can be sufficiently cooled for normal operation even if one fan fails.
Firmware shall continuously monitor the temperature sensors within the enclosure and take proper
actions to throttle the fans in order to maintain optimal operating temperature.

Over-Temperature Shutdown

In order to prevent potential damage to the drives and subsequent loss of data, the power supply has
the capability to shut itself down or be shut down by the RAID controller in the event of an over-
temperature condition. When the power supply incorporates its internal thermal shutdown feature, it
will automatically restart when the over temperature condition no longer exists. Hysteresis of at least
5 degrees is employed to prevent a frequent toggling on and off of the outputs.
Requirement
90 – 264 VAC
47 – 63 Hz
55 A for 10ms or less, 25 A for 10-150ms
0.9 @ output load > 90%
Must Meet Climate Savers requirements:
Load Condition
Efficiency
20%
87%
50%
90%
100%
87%
600 Watts
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