CYBENETICS LTD Syrou 6, Latsia, 2231, Nicosia Cyprus
Micronics Classic II Full Change 900W
Serial Number
Lab IDMI90002445
  • Report: 24PS2445A
  • Receipt Date: Apr 30, 2024
  • Test Date: May 16, 2024
  • Report Date: May 17, 2024
115V230V
Efficiency Rating
115V230V
Noise Rating
Aristeidis Bitziopoulos, Laboratory General Manager

General Information

DUT Information

BrandMicronics
Manufacturer (OEM)Sirfa (Dong Guan) Electronic
SeriesClassic II Full Change
Model NumberHP1-N900ST-E12S
Serial Number
DUT NotesWe didn't test efficiency with a 2% load

DUT Specifications

Rated Voltage (Vrms)200-240
Rated Current (Arms)8
Rated Frequency (Hz)50-60
Rated Power (W)900
TypeATX12V
Cooling120mm Sleeve Bearing Fan
(PY-1225M12S)
Semi-Passive Operation✓
Cable DesignFixed cables

Power Specifications

Rail3.3V5V12V5VSB-12V
Max. PowerAmps22227530.3
Watts120900153.6
Total Max. Power (W)900

Test Equipment

Electronic Loads Chroma 63601-5 x2
Chroma 63600-2
63640-80-80 x10
63610-80-20
AC Sources Chroma 6530, APM SP300VAC4000W-P
Power Analyzers RS HMC8015, N4L PPA1530, N4L PPA5530
Oscilloscopes Picoscope 4444, Rigol DS7014, Siglent SDS2104X PLUS
Sound Analyzer Bruel & Kjaer 2270 G4
Microphone Bruel & Kjaer Type 4955-A
Temperature Logger Picoscope TC-08
Tachometer UNI-T UT372
Multimeters Keysight 34465A, Keithley 2015 - THD
UPS FSP Champ Tower 3kVA, CyberPower OLS3000E 3kVA
Isolation Transformer 4kVA
Testing Methodology Cybenetics PSU Test Protocol

Cables and Connectors

Captive Cables
Description Cable Count Connector Count (Total) Gauge In Cable Capacitors
ATX connector 20+4 pin (545mm) 1 1 18-22AWG No
4+4 pin EPS12V (680mm+155mm) 1 2 18AWG No
6+2 pin PCIe (465mm+155mm) 2 4 18AWG No
12+4 pin PCIe (585mm) (600W) 1 1 16-24AWG No
SATA (470mm+1560mm+160mm+160mm) 2 8 18AWG No
4-pin Molex (445mm+155mm+150mm) 1 3 18AWG No

Test Results

Temperature & Compliance Info

Temperature Range (°C /°F)30-32 / 86-89.6
ErP Lot 3/6 Ready✓
(EU) No 617/2013 Compliance✓
ALPM (Alternative Low Power Mode) compatible✓
ATX v3.1 PSU Power Excursion✓

Performance Summary 230V

Efficiency RatingSILVER
Noise RatingStandard
Average Efficiency (>1450 load combinations)87.617%
Average Noise Output (>1450 Load Combinations)43.17dBA
Average PF (>1450 Load Combinations)0.941
Efficiency With 10W (≤500W) or 2% (>500W) Load0.000%
Standby Power Consumption0.1998W
12V Ripple (Full Load)35.35mV
5V Ripple (Full Load)19.91mV
3.3V Ripple (Full Load)26.87mV
5VSB Ripple (Full Load)22.59mV
12V Load Regulation1.33%
5V Load Regulation0.70%
3.3V Load Regulation0.79%
5VSB Load Regulation4.16%
Inrush Current84.920A
12V Transient Response (200%)11.09V
5V Transient Response (200%)4.958V
3.3V Transient Response (200%)3.180V
5VSB Transient Response (200%)4.930V
Hold-Up Time & Power Ok Signal19.90ms
AC Loss to PWR_OK Hold Up Time15.20ms
PWR_OK Inactive to DC Loss Delay4.70ms
PSU Timings: T1 (20% / 100%)49.0ms82.0ms
PSU Timings: T3 (20% / 100%)125.0ms123.0ms
OPP (27.61°C / 0.00°C)138.68%0.00%

Hold-Up Time & Power Ok Signal

Hold-Up Time (ms)19.9
AC Loss to PWR_OK Hold Up Time (ms)15.2
PWR_OK Inactive to DC Loss Delay (ms)4.7

Vampire Power

Tables 230V

Detailed Results
Average Min Limit Min Max Limit Max Result
Mains Voltage RMS: 231.00 V 230.89 V 227.70 V 231.06 V 232.30 V PASS
Mains Frequency: 50.00 Hz 49.99 Hz 49.50 Hz 50.01 Hz 50.50 Hz PASS
Mains Voltage CF: 1.417 1.416 1.340 1.419 1.490 PASS
Mains Voltage THD: 0.17 % 0.14 % N/A 0.27 % 2.00 % PASS
Real Power: 0.200 W 0.186 W N/A 0.223 W N/A N/A
Apparent Power: 29.509 W 29.244 W N/A 29.771 W N/A N/A
Power Factor: 0.007 N/A N/A N/A N/A N/A

Graphs 230V

Efficiency Graph

230V

INFO

This graph depicts the PSU`s efficiency throughout its entire operational range. For the generation of the efficiency and noise graphs we set our loaders to auto mode through our custom-made software before trying thousands of possible load combinations

Noise Graph

230V

INFO

The PSU`s noise in its entire operational range and under 30-32 °C ambient is depicted in this graph. The X axis represents the load on the +12V rail(s) while the Y axis is the load on the minor rails

Indicative Performance

Efficiency under high ambient temperature

INFO

The PSU`s efficiency under high ambient temperatures with 115V and 230V input. For this graph the results of the 10-110% load regulation table are used

5VSB Efficiency

INFO

This graph depicts the efficiency levels of the 5VSB rail with 115V and 230V input

5VSB Efficiency (ERP LOT 3/6 & CEC) 230V

Test # 5VSB DC/AC (Watts) Efficiency PF/AC Volts
1 0.045A 0.229W 54.738% 0.014
5.084V 0.419W 229.91V
2 0.09A 0.457W 65.251% 0.023
5.082V 0.701W 229.9V
3 0.55A 2.787W 78.59% 0.113
5.068V 3.546W 229.89V
4 1A 5.055W 79.062% 0.186
5.055V 6.393W 229.89V
5 1.5A 7.56W 79.587% 0.24
5.04V 9.499W 229.88V
6 3A 14.98W 76.949% 0.351
4.994V 19.469W 229.88V

Supplementary Tests (For Reference)

Typical Load Tests 230V

Test 12V 5V 3.3V 5VSB DC/AC (Watts) Efficiency Fan Speed (RPM) PSU Noise (dB[A]) Temps (In/Out) PF/AC Volts
10% 5.676A 1.978A 1.988A 0.991A 89.998 84.166% 904 28.7 40.05°C 0.718
12.050V 5.054V 3.319V 5.044V 106.929 44.33°C 229.87V
20% 12.384A 2.97A 2.985A 1.193A 179.94 88.588% 1015 32.1 40.82°C 0.922
12.035V 5.051V 3.317V 5.028V 203.125 45.34°C 229.86V
30% 19.460A 3.466A 3.484A 1.397A 269.983 89.721% 1171 36.2 41.22°C 0.963
12.021V 5.049V 3.315V 5.011V 300.905 46.28°C 229.84V
40% 26.557A 3.964A 3.984A 1.602A 360.031 89.973% 1412 41.3 41.74°C 0.967
12.006V 5.046V 3.313V 4.994V 400.157 47.26°C 229.83V
50% 33.287A 4.958A 4.985A 1.809A 449.624 89.741% 1591 44.2 42.24°C 0.97
11.991V 5.042V 3.31V 4.977V 501.022 48.26°C 229.81V
60% 40.077A 5.954A 5.987A 2A 539.669 89.372% 1761 46.5 42.79°C 0.972
11.975V 5.039V 3.307V 4.959V 603.849 49.37°C 229.79V
70% 46.888A 6.952A 6.992A 2.227A 629.859 88.708% 1920 48.6 43°C 0.974
11.959V 5.035V 3.304V 4.94V 710.037 50.14°C 229.78V
80% 53.725A 7.949A 7.997A 2.335A 719.472 88.072% 1958 49.0 43.97°C 0.976
11.942V 5.031V 3.301V 4.924V 816.915 51.97°C 229.76V
90% 60.984A 8.451A 8.487A 2.445A 809.694 87.378% 1956 49.0 44.1°C 0.977
11.924V 5.028V 3.299V 4.908V 926.659 53.18°C 229.74V
100% 68.011A 8.955A 9.01A 3.078A 899.299 86.436% 1959 49.1 45.7°C 0.978
11.904V 5.024V 3.296V 4.874V 1040.428 55.8°C 229.73V
110% 74.994A 9.96A 10.114A 3.087A 989.512 85.435% 1965 49.1 47.41°C 0.979
11.884V 5.019V 3.293V 4.859V 1158.203 58.32°C 229.71V
CL1 0.116A 14.366A 14.484A 0A 121.291 79.183% 1608 44.4 40.25°C 0.832
12.036V 5.025V 3.294V 5.063V 153.175 51.11°C 229.87V
CL2 0.115A 21.898A 0A 0A 111.308 77.465% 1326 39.5 40.32°C 0.819
12.042V 5.019V 3.306V 5.068V 143.688 48.81°C 229.87V
CL3 0.115A 0A 22.073A 0A 73.998 71.274% 1175 36.3 41.62°C 0.706
12.044V 5.037V 3.29V 5.069V 103.823 48.35°C 229.88V
CL4 75.522A 0A 0A 0A 899.935 87.262% 1967 49.1 45.3°C 0.979
11.917V 5.046V 3.309V 4.983V 1031.31 55.51°C 229.73V

The results above are not used in the certification process

Light Load Tests 230V

Test 12V 5V 3.3V 5VSB DC/AC (Watts) Efficiency Fan Speed (RPM) PSU Noise (dB[A]) Temps (In/Out) PF/AC Volts
20W 1.231A 0.494A 0.497A 0.197A 19.998 63.864% 0 <6.0 39.89°C 0.339
12.062V 5.059V 3.322V 5.077V 30.161 36.76°C 229.88V
40W 2.711A 0.692A 0.696A 0.296A 39.999 78.122% 0 <6.0 40.83°C 0.488
12.058V 5.058V 3.321V 5.072V 51.498 37.46°C 229.88V
60W 4.192A 0.89A 0.894A 0.395A 60 82.089% 813 25.3 38.79°C 0.584
12.055V 5.057V 3.321V 5.067V 73.089 42.34°C 229.88V
80W 5.668A 1.088A 1.093A 0.494A 79.951 83.707% 853 26.8 39.03°C 0.677
12.052V 5.057V 3.32V 5.061V 95.514 42.73°C 229.88V

The results above are not used in the certification process

Ripple Measurements 230V

Test12V5V3.3V5VSBPass/Fail
10% Load18.57mV13.49mV11.82mV13.71mVPass
20% Load19.90mV13.69mV13.20mV14.12mVPass
30% Load19.18mV13.03mV12.43mV12.94mVPass
40% Load21.33mV14.10mV14.88mV13.76mVPass
50% Load22.87mV14.97mV15.55mV14.07mVPass
60% Load31.36mV19.11mV17.39mV29.05mVPass
70% Load25.38mV14.71mV16.98mV16.27mVPass
80% Load27.63mV16.61mV19.90mV17.59mVPass
90% Load28.65mV17.58mV22.00mV17.70mVPass
100% Load35.35mV19.91mV26.87mV22.59mVPass
110% Load37.99mV20.67mV29.26mV22.92mVPass
Crossload121.74mV18.20mV16.08mV19.45mVPass
Crossload222.87mV25.90mV11.00mV18.52mVPass
Crossload319.95mV13.18mV16.68mV18.26mVPass
Crossload433.04mV18.58mV27.20mV20.48mVPass

The results above are not used in the certification process

Micronics Classic II Full Change 900W

Top side
Power specifications label
All data and graphs included in this test report can be used by any individual on the following conditions:
› It should be mentioned that the test results are provided by Cybenetics
› The link to the original test results document should be provided in any case
Cybenetics offers the ETA and Lambda voluntary certification programs, through which the efficient and silent power supplies are promoted
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