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Test Configuration, Holdup Time, Inrush Current, Peak, And Short-Circuit Test

80 PLUS Gold: Four Efficient 700-850 W Power Supplies
By , Patrick Afschar
Test Hardware
AC SourceChroma Programmable AC Source 6530
Power MeterYokogawa WT210 Digital Power Meter
Loads4 x 600 W Chroma 63306 for 12 V testing

4 x 300 W Chroma 63303 for 5 and 3.3 V testing

using Chroma High-Speed DC Load Mainframes 6334 
OscilloscopeTektronix DPO3034 Digital Phosphore Oscilloscope (300 MHz)
Test Procedure
Voltages110 and 230 V
Standby Power0.25 A fixed current to simulate PC standby power on 5 Vsb
80plus Efficiency Testing100/50/20% load, relative to specified total output
Load distribution across 12/5/3.3V rails at the same proportion as specified for 100% testing at 110 V according to ATX 2.3 specification
Efficiency at Fixed Loads25, 50, 85, 300, 500 W loads
Load distribution across 12/5/3.3 V rails at the same proportion as specified for 100%
Peak Load Test110% Overload Testing at maximum combined 12 V
Temperature TestAir intake vs. Outtake temperature delta tracking highest delta during all tests


Holdup-Time, Inrush Current, Peak and Short-Circuit Test

Short Circuit Protection Test (12 V)
ModelTest Passed
Silverstone Strider Gold 750 W (115 V)yes
Silverstone Strider Gold 750 W (230 V)yes
Seasonic X-760 (115 V)yes
Seasonic X-760 (230 V)yes
FSP AU-700 (115 V)yes
FSP AU-700 (230 V)yes
Antec HCP-850 (115 V)yes
Antec HCP-850 (230 V)yes
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