20 kVA Single Phase Frequency Converter 60Hz to 50Hz

20kVA solid state pure sine wave frequency converter, single phase 110V/220V input, single phase 0-300V output, easy converting 60Hz power to 50Hz for household appliances, 400Hz for aircraft.
Delivery date: 6 - 12 Days

20 kVA single phase AC power frequency converter, easy converting single phase 110V/220V 50Hz/60Hz to expected frequency & voltage, inner step up transformer can boost 110V to 220V easily, also can convert 220V 50Hz to 110V 60Hz, output frequecy up to 400Hz can be used for aircraft.


Model HZ-50-1120
Capacity 20 kVA
Dimension 680*500*970mm
Weight 180 kg
Input Voltage 1 Phase 2 Wire: 110V/120V, 220V/230V/240V ± 10% (option *)
Frequency 50 Hz, 60 Hz or 400 Hz ± 5%
Output Voltage, current 110V Setting (Low grade): 0-150V, 166.4A
220V Setting 0-300V (High grade): 0-300V, 83.2A
Load stabilization Rate ≤±1%
Frequency 50Hz, 60Hz up to 400Hz adjustable
-When the output is 400Hz, the load capacity can only reach 50% of the rated capacity.
-When the output is ≤120Hz, the load capacity can reach 100% of the rated value.
-You can just adjust converter output frequency in the range (40-400Hz) for 400Hz option.
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: Where frequency as low as 20 Hz or 10 Hz are used normally?
At 20 Hz and lower they are usually used for mining excavators (rotation). To rotate the higher structure of a mining excavator, it's used two or three motors (that's depends of excavator) runs by variable frequency drives (could be one drive or each motor have a drive and optical fiber communication to coordinate between the drives). The rotation of excavator are in steps and the steps are generally between 10 (15) Hz until 50 (60) Hz (generally there are 5 steps 10-20-30-40-50Hz- but in tests the final/realistic decision its taken).

The operator of excavator work between the second speed (20 Hz) and the penultimate speed (40 Hz) - he can stay in 20 Hz long period if the excavated earth is hard/rough. If not he can run in the 3 or 4 speed. All the speeds are used without problems.

Example for low than 10 Hz frequency: In special situations, the displacement of mining excavators can be done at 5 Hz (or around) but not for a long period. They need to do that in case of skating at the lower normal step/speed (if it's raining a lot the land can be difficult). The displacement could have also 5 speeds similar of rotation as values.

Download PDF, DOC...
PDF: 50Hz/60Hz Frequency Converter Manual
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Rock Solid Unit
Ive been using the 20kva freq. converter in my shop for 2 years now and it's proved very reliable.

I'm running 4hp uk spec (50hz@230v) woodworking machines in the usa.

My fluke meter shows exactly 50hz and the voltage is very stable hovering around 229.9-230.1v. Most of the time it's bang on the confugured 230v. The machines behave exactly as they did in the uk.

I also sampled the tech support as my unit was non functional when it arrived. Support was excellent and they quickly diagnosed a component that had come loose in transit. Reseating took seconds and the machine hasn't missed a beat since.

Can't fault the product or the company.
By Jonathan on 16/06, 2019
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Is this a programmable frequency converter?
No, not regenerative. The output Voltage & Frequency are adjustable by rotary knobs, but you can program it by external PLC, which you have to state such requirement in order.
By GoHz.com on 11/05, 2018
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Is this a programmable frequency converter?
I am interested in this 20kVA single phase frequency converter, but I have some questions about it:
-Is it possible to make the power flow from one side to the other? (e.g. If I want to take some power from a 60Hz grid and start a motor, and later I want to inject energy to the grid from that motor)
-Are the values of input and output programmable? I would require an input of 50Hz and an output of 60Hz, but it would be better if we could program it and test it.
By Anthony on 11/05, 2018
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