Table 1. loading table for efficiency measurements, Table 2. minimum efficiency vs load – SilverStone ST30SF User Manual
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3.4. EFFICIENCY
3.4.1 General
Under the load conditions defined in Table 1. and Table 2. The loading condition for
testing efficiency shown in Table 1 represents a fully loaded system. ~ 50% (typical)
loaded system. and ~ 20% (light) loaded system.
Table 1. Loading Table for Efficiency
Measurements
300W(loading shown in Amps)
Loading +12V
+5V +3.3V -12V +5Vsb
Full 18.7
7.58
7.96 0.31 1.56
Typical 9.3
3.79
3.98 0.16 0.78
Light 3.7
1.52
1.59 0.06 0.31
Table 2. Minimum Efficiency Vs Load
Loading Voltage Full load Typical load Light load
Required Minimum Efficiency 115V >82% >85% >82%
Required Minimum Efficiency 230V >85%
>87%
>85%
◆
Minimum Efficiency for test purposes are considered to be within ±1.0% of nominal.
3.4.2 Standby Power Consumption (+5Vsb):
Input Power < 0.5W @+ 5Vsb/45mA & 230Vac input
PS_ON input signal @ High State