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.
||1 Phase 2 Wire: 110V/120V, 220V/230V/240V ± 10% (option *)
||50 Hz, 60 Hz or 400 Hz ± 5%
||110V Setting (Low grade): 0-150V, 166.4A
|220V Setting 0-300V (High grade): 0-300V, 83.2A
|Load stabilization Rate
||50Hz, 60Hz up to 400Hz adjustable
||Pure Sine Wave ≤2%
||4 digit, digital frequency meter, resolution 0.1Hz/Step
||4 digit, digital voltage meter, resolution 0.1V
||4 digit, digital ammeter, resolution 0.1A
||4 digit, digital Watt meter, resolution 0.1W
||With overload, short circuit, over temperature
|Instantaneous power failure protection and alarm device
||0 - 40 deg.℃
||0 - 90% (Non condensation)
* 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.
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