20 kVA Static Frequency Converter, 3 Phase 220V/380V/480V

20 kVA three phase static frequency converter, compatible with 3 phase 220v/380v/480v 50Hz/60Hz power system, output single phase or three phase, convert 60Hz to 50Hz for electric equipment.
Delivery date: 15 - 30 days

20 kVA three phase 220V/380V/480V static (solid state) frequency converter, adjustable output voltage and frequency, easy converting 60Hz to 50Hz and 3 phase to 1 phase (vice versa).


Model HZ-50-3320
Capacity 20 kVA
Dimension 770*580*1140mm
Weight 220 kg
Input Voltage 3 Phase 4 Wire: Wye Type 190/110, 200/115, 208/120, 220/128, 230/132, 240/139V ±10% (option *)
3 Phase 4 Wire: Wye Type 380/220, 400/230, 415/240, 440/254, 460/265, 480/277V ± 10% (option *)
3 Phase 4 Wire: Della Type 220, 230, 240, 380, 400, 415, 440V ± 10% (option *)
Frequency 50 Hz, 60 Hz or 400 Hz ± 5%
Output Voltage, current 110V Setting (Low grade): 0-150V (phase voltage), 0-260V (line voltage) 55.6A
220V Setting (High grade): 0-300V (phase voltage), 0-520V (line voltage) 27.8A
Load stabilization Rate ≤±1%
Frequency 50Hz, 60Hz up to 400Hz adjustable
Frequency Stability ≤±0.01%
Harmonic Distortion Pure Sine Wave ≤2%
Frequency meter 4 digit, digital frequency meter, resolution 0.1Hz/Step
Voltmeter 4 digit, digital voltage meter, resolution 0.1V
Ammeter 4 digit, digital ammeter, resolution 0.1A
Watt meter 4 digit, digital Watt meter, resolution 0.1W
Protection With overload, short circuit, over temperature
Instantaneous power failure protection and alarm device
Working Environment Temperature 0 - 40 deg.℃
Humidity 0 - 90% (Non condensation)
Warranty 18 months

* The input voltage is factory selected.

Tips: If I run a 3-phase motor rated 460V 60Hz on a 380V 60Hz power supply what will happen?
For motors not driven by a variable frequency source the volts/hertz ratio should stay constant to keep the magnetic fields compliant with the motor design. If you ran a 480V / 60 Hz motor at 380V / 50 Hz the volts/hertz ratio would be maintained but with it being 380V / 60 Hz you have not maintained the volts/hertz ratio. Also, the motor should be protected with a thermal overload device, not just an upstream circuit breaker. You can check the condition of the motor by performing a megger, Hipot, and surge comparison test to determine if it has been damaged. The frequency of the source and the number of the motor poles sets the basic speed of the induction motor so motors can operate at 50 or 60 Hz line frequencies but obviously the speed will change and the voltage needs to be provided accordingly to keep the Volts/Hz ratio constant, when not using a VFD. Also, the load would have to be adjusted accordingly to not exceed the motor nameplate current rating.

Download PDF, DOC...
PDF: 50Hz/60Hz Frequency Converter Manual
Write your own review for 20 kVA Static Frequency Converter, 3 Phase 220V/380V/480V
  • Only registered users can write reviews
Needs Improvement Best
Related products