Test Configuration And Short Circuit Tests - Sub-$75 Mainstream Power Supply Roundup

Test Hardware
AC Source	Chroma Programmable AC Source 6530
Power Meter	Yokogawa WT210 Digital Power Meter
Loads	4 x 600 W Chroma 63306 for 12 V testing 4 x 300 W Chroma 63303 for 5 and 3.3 V testing using Chroma HighSpeed- DC Load Mainframes 6334
Oscilloscope	Tektronix DPO3034 Digital Phosphore Oscilloscope (300 MHz)
Test Procedure
Voltages	110 and 230 V
Standby Power	0.25 A fixed current to simulate PC standby power on 5 Vsb
80 PLUS Efficiency Testing	100/50/20% load, relative to specified total output Load distribution across 12/5/3.3 V rails at the same proportion as specified for 100% testing at 110 V according to ATX 2.3 specification
Efficiency at Fixed Loads	25, 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 Test	110% Overload Testing at maximum combined 12 V
Temperature Test	Air intake vs. outtake temperature delta tracking highest delta during all tests

Short Circuit Protection Test (12 V)
Model	Test Passed
Antec EA-380D Green (115 V)	yes
Antec EA-380D Green (230 V)	yes
Chieftec BPS-450S (115 V)	yes
Chieftec BPS-450S (230 V)	yes
Enermax PRO 82+ II (115 V)	yes
Enermax PRO 82+ II (230 V)	yes

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Summary