15KVA 3 phase autotransformer

15KVA 3 phase autotransformer

15KVA 3 phase autotransformer is manufactured and supplied by Shuogong Power, a leading transformer company in China

The main role of a 15KVA autotransformer is to step down your input voltage to a usable range, for example, step down an input voltage of 480V to a 240V output.

The 15KVA 3 phase autotransformer is available with copper wire and aluminum wire. In addition, you can also choose whether to have a casing or not.

Are you looking for a 15KVA 3 phase autotransformer with stable quality? Here you can get exclusive discounted prices from transformer manufacturers.

The total power of the 15KVA 3 phase autotransformer is 15000VA, which is suitable for the step-down requirements of various equipment, such as stepping down the input voltage 480V to 240V output or stepping down the input voltage 380V to 220V/200V output.

In addition, we also accept customization of various input and output voltages. We are a leading transformer manufacturer in China. We have a strong R&D and manufacturing team, which can complete the delivery quickly and with high quality.


Model SOB-15KVA
Phase 3-Phase
Capacity 15 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 72 kg
Dimension(without enclosure) 310*220*250 mm

15KVA 3 phase autotransformer price:

The retail price of a 15KVA transformer on the market is usually $2300-2600.

Here you will get exclusive preferential prices for transformer manufacturers.

Contact us now to get your 15KVA 3 phase transformer discounted price.

Items Price  Capacity
15 kVA single phase isolation transformer price $2786.44 208 to 110V
15 kVA three-phase isolation transformer price $3203.97 400V to 208V
15 kVA three-phase autotransformer price $2333.23 380V to 220V


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.

Why buy an 15KVA 3 phase autotransformer at the manufacturer:

Three phase transformers are everywhere on the web, and many online stores that sell transformers are not manufacturers and they can’t customize a 3 phase autotransformer for you to match your voltage needs.

And can not get timely technical support, as a leading transformer manufacturer in China, we can provide customers with comprehensive power product solutions.

Whether it is design, manufacture, OEM, these are our strengths. Do not because please let us do your transformer factory.

Wiring diagram of 15KVA 3 phase autotransformer:

Wiring diagram of 3KVA 3 phase autotransformer:


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