SSI America ERP2U manual Acoustic Requirements, Airflow Requirements, Temperature Requirements

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SSI

ERP2U Power Supply Design Guide, V2.31

4.1Acoustic Requirements

STATUS

Recommended

It is recommended the power supplies have a variable speed fan based on temperature and loading conditions. There are three different acoustic sound power levels defined at different ambient temperatures and loading conditions.

Table 1 Recommended Acoustic Sound Power Levels

 

Idle

Typical

Max

Ambient Temperature

28ºC

28ºC

45ºC

% Loading

30%

60%

100%

Sound Power (BA)

5.2

5.6

6.1

4.2Airflow Requirements

STATUS

Recommended

The air shall exit the power supply on the AC inlet face. The power supply shall meet all requirements with the below system airflow impedance presented to the power supplies airflow path.

Figure 2 System Airflow Impedance

System Flow Impedance - 2U

 

0.6

 

 

 

 

2O)

0.5

 

 

 

 

(in H

0.4

 

 

 

 

Pressure

 

 

 

 

0.3

 

 

 

 

0.2

 

 

 

 

System

 

 

 

 

0.1

 

 

 

 

 

 

 

 

 

 

0.0

 

 

 

 

 

0

5

10

15

20

Power Supply Airflow (CFM)

4.3Temperature Requirements

STATUS

Recommended

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Contents SSI ERP2U Power Supply Design Guide Disclaimer Contents Error! Bookmark not defined TablesFRU Device Product Information Area Purpose Conceptual OverviewDefinitions/Terms/Acronyms RequiredMechanical Overview Required OptionalAcoustic Requirements Temperature RequirementsRecommended Acoustic Sound Power Levels Airflow RequirementsAC Input Requirements AC Inlet ConnectorAC Input Voltage Specification Redundant AC InletsAC Line Dropout Input Under VoltageEfficiency AC Input RatingAC Inrush AC Line Transient SpecificationAC Line Fuse AC Line Sag Transient PerformanceAC Line Surge Transient Performance AC Line Fast Transient SpecificationAC Line Surge Required Baseboard power connector DC Output SpecificationOutput Connectors P1 Baseboard Power ConnectorRequired Floppy Power Connector 2 +12V4 Baseboard Power ConnectorRequired Peripheral Power Connectors Peripheral Power ConnectorsFloppy Power Connector Serial ATA Power ConnectorServer Signal Connector Server Signal ConnectorRemote Sense Output Power/CurrentsGrounding 550 W Load Ratings600 W Load Ratings 650 W Load Ratings700 W Load Ratings 750 W Load RatingsStandby Outputs Fan operation in standby modeVoltage Regulation 800 W Load RatingsVoltage Regulation Limits Dynamic LoadingCapacitive Loading Transient Load RequirementsCapacitve Loading Conditions Ripple / NoiseRipple and Noise Redundancy Hot Swap RequirementsOutput Voltage Timing Timing RequirementsDescription Turn On/Off Timing Recommended DescriptionTurn On/Off Timing 240VA Protection Protection CircuitsCurrent Limit Over Current ProtectionOver Voltage Limits Over Temperature ProtectionOver Voltage Protection Output VoltagePwok delay Control and Indicator FunctionsPson # Signal Characteristic Signal Type PSON#Pwok Signal Characteristics Pwok Power OKPower Supply Management Interface SMBus CommunicationProduct Info Area Field Replacement Unit FRU SignalsModule FRU Data Module FRU Data Format FRU Device InformationMultiRecord Area LED IndicatorsField Name PS Info Field Information Definition LED Indicators Power Supply LEDsMtbf 10Agency Requirements

ERP2U specifications

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