SSI
ERP2U Power Supply Design Guide, V1.0
4.2.1Redundant Cooling
STATUS
Recommended
It is recommended that the power supply cooling be redundant. This means the cooling device is located in the hot swap power supply modules or there are redundant devices located on the cage.
4.3Temperature Requirements
STATUS
Recommended
The power supply shall operate within all specified limits over the Top temperature range. All airflow shall pass through the power supply and not over the exterior surfaces of the power supply.
| Table 1: | Thermal Requirements |
|
| |
ITEM | DESCRIPTION |
| MIN | MAX | UNITS |
Top | Operating temperature range. |
| 0 | 50 | ° |
|
|
|
| C | |
| 70 | ° | |||
|
|
|
| C |
The power supply must meet UL enclosure requirements for temperature rise limits. All sides of the power supply with exception to the air exhaust side, must be classified as “Handle, knobs, grips, etc. held for short periods of time only”.
5AC Input Requirements
STATUS
Required
The power supply modules shall incorporate universal power input with active power factor correction, which shall reduce line harmonics in accordance with the
5.1AC Inlet Connector
STATUS
Required
The AC input connector shall be an IEC 320
5.2Redundant AC Inlets
STATUS
Recommended
The power supply assembly may have dual redundant AC inlets. The power supply shall be able to operate over its full, specified range of requirements with either or both AC input powered. If there is a loss of one AC inlet the
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