25KVA 3 phase autotransformer

25KVA 3 phase autotransformer

25KVA 3-phase autotransformer is manufactured and supplied by Shuogong Power, a leading Chinese transformer company.

The rated capacity is 25KVA, and two kinds of wires can be selected: copper wire or aluminium wire.Affordable prices.

The main function of the 25KVA dry-type transformer is to step down the input voltage to the usable range output, for example, step down the input voltage 380V to 200V/220V output.


3 phase autotransformer from professional manufacturer. Rated capacity 25kVA, designed to step down high voltage 380 volts to 220/200 volts, for AC circuits 50 Hz or 60 Hz, self-cooled or air-cooled.

This 25KVA three phase transformer is an autotransformer, which can be made of copper wire or aluminum wire. Its efficiency is as high as 98% and the price is favorable.

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

Model SOB-25KVA
Phase 3-Phase
Capacity 25 kVA
Input Voltage AC 380V
Input Current 37A
Output Voltage (Optional) AC 220V, 200V
Output Current 65A (220V), 70A (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 110 kg
Dimension 360*290*350 mm

25KVA 3 phase autotransformer price:

The retail price of a 25KVA transformer on the market is usually $2800-3000.

Here you will get exclusive preferential prices for transformer manufacturers.

Contact us now to get your 25KVA 3 phase transformer discounted price.


25KVA 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, etc.

Wiring diagram of 25KVA 3 phase autotransformer:

The wiring diagram of the 3-phase autotransformer is actually the same. The following is the wiring diagram of the 25KVA 3-phase autotransformer.

Wiring diagram of 3KVA 3 phase autotransformer:


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