Dell PowerVault MD3220i Series Manual técnico - Página 36

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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.

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