20KVA 3 phase autotransformer

20KVA 3 phase autotransformer

20KVA 3 phase autotransformer manufacturer price sale. This 20KVA 3-phase transformer is a dry-type transformer with a maximum power of 20000VA. The main function is to step down, for example, step down the input voltage 480V to 208V output.

Optional copper/aluminum wire. Dry type auto transformer supports self-cooling or wind-cooled, F insulation class winding.

Are you looking for a high quality affordable 20K transformer? At Shuogong Power you can get manufacturer discounted prices.

This 20KVA 3 phase autotransformer has a total power of 20KVA, which can meet your step-down needs for various equipment, for example, step-down input voltage 380V to 220V/200V, step-down 480V to 208V.

The power of the 20KVA three phase transformer is sufficient, the wiring is tight and neat, and there is no jumping circle.

The coil is made of insulated H-grade enameled wire, with small no-load current and low loss.

Built-in silicon steel sheet, good magnetic flux performance, high heat dissipation coefficient and low magnetic loss.


Model SOB-20KVA
Phase 3-Phase
Capacity 20 kVA
Input Voltage AC 380V (Optional)
Output Voltage (Optional) AC 220V, 200V
Frequency 50Hz / 60Hz
Winding Material (Optional) Aluminum Wire, Copper Wire
Cooling Method Self-Cooling or Wind-Cooling
Working Efficiency ≥98%
Protection Grade IP21
Waveform Distortion No distortion (compared with output wave)
Insulation Resistance ≥ 150MΩ
Wiring Yn0
Electrical Strength Power frequency sinusoidal voltage 3000V lasts for 1 minute, no breakdown and flicker
Overload Protection Can withstand instantaneous 2 times the rated current
Moisture-Proof Type (Optional) Open type, sealed type
Ambient Temperature -20℃ ~ +45℃
Altitude ≤ 2500m
Relative Humidity 0-95%
Noise ≤35dB (within 1 meter)
Design Service Life 10 years+
Use Environment No explosion, rain and snow corrosion place, and no gas and conductive dust in the medium that can corrode metal and damage insulation
Weight 90 kg
Dimension(without enclosure) 360*280*350 mm

20KVA 3 phase autotransformer price:

The retail price of a 20KVA transformer on the market is usually $2600-2800.

Here you will get exclusive preferential prices for transformer manufacturers.

Contact us now to get your 20KVA 3 phase transformer discounted price.


Three phase autotransformer can be used in CNC machine tools, SMT placement machines, printing machines, EDM machines, automatic plug-in machines, precision measuring equipment, laser cutting machines, injection molding machines, medical monitoring systems, PCB drilling machines, laboratories equipment, military instrumentation control center, etc.

Wiring diagram of 20KVA 3 phase autotransformer:

Wiring diagram of 3KVA 3 phase autotransformer:


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