The ideal AC power source features stabilized frequency, stabilized voltage, zero internal resistance and pure sine wave voltage waveform (no distortion). Variable frequency power source is very close to ideal AC power source. Therefore, the developed countries tend to use the variable frequency power source as the standard power source, so as to provide the electric devices the most excellent power-supplying environment, which is convenient to objectively test technical performance of the electric devices. The variable frequency power source mainly consists of two types: Linear Amplifying and SPWM Switching.

Notes
　　1) Custom-made specifications are available
　　2) The website specifications are only for your reference, the actual specificities depends on attached specifications.

Model/Output Capacity

DD-0.5VA

DD-1kVA

DD-2kVA

DD-3kVA

DD-4kVA

DD-5kVA

DD-6KVA

DD-10KVA

DD-15KVA

SD-20KVA

SD-30KVA

SD-45KVA

SD-60KVA

Output Current

LOW

4.2A

8.4A

16.8A

25A

33.4

42A

50A

84A

125A

168A

250A

375A

500A

HIGH

2.1A

4.2A

8 .4A

12.5A

16.7

21A

25A

42A

63A

84A

125A

188A

250A

Output Voltage

　Single-phase LOW： 0-250V     HIGH： 0-500V

Output Frequency

　45.0-70.0 Hz Adjustable，50Hz ， 60Hz ， 2F ， 4F ， 400Hz (Optional)

Circuit Type

　(IGBT)MPWM (Pulse Width Modulation)

Input Voltage

　DD:Single-phase AC220V ± 15%   50/60Hz　　　　 SD:Three-phase four-wire AC380V ± 15%    50/60Hz

Frequency Stability

　≤ 0.05%

Load Regulation

　≤ 0.5%-1.5% (Resistor Load)

Waveform Distortion Rate

　≤ 0.5%-1.5% (Resistor Load)

Output Instruments

Frequency Indicator, 4-digits RMS digital frequency indicator, resolution 0.1Hz

Voltage Meter, 4-digits RMS digital voltage meter, resolution 0.1V

Ampere Meter, 4-digist RMS digital ampere meter, resolution 1mA

Power Indicator, 4-digits RMS digital power indicator, resolution 1W

Power Factor Meter Resolution 0.001

Protective Devices

Operating Environment

　Temperature 0～40℃ Relative Humidity 0～90%