250KVA 3 phase autotransformer

250KVA 3 phase autotransformer

250KVA 3 phase autotransformer is a dry-type transformer which is mainly used for step-down, suitable for various large equipment

This 250KVA 3 phase autotransformer is constructed of high-quality copper or aluminum wire to step down the input voltage to a usable range output.

250KVA transformers are sold at manufacturer prices, which is a benefit of choosing to buy transformers from a transformer factory.

250KVA 3 phase autotransformer is manufactured and supplied by Shuogong Power, a leading transformer company in China.

Its standard input voltage is 380V, output voltage is 220V/200V, frequency is 50/60Hz, and copper/aluminum wire is optional.

Dry-type autotransformer, electromagnetic induction, primary and secondary windings are insulated separately.

In addition to standard input and output voltages, we can also customize dry type transformers that meet your needs. Whatever voltage you need, our strong R&D team can support you. This is our advantage.


Model SOB-250KVA
Phase 3 Phase
Capacity 250 kVA
Input Voltage(Optional) AC 380V
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 15 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 520 kg
Dimension 830*420*760 mm

250KVA 3 phase autotransformer price:

The retail price of a 250KVA transformer on the market is usually $9500-10000.

Here you will get exclusive preferential prices for transformer manufacturers.

Contact us now to get your 250KVA three phase transformer discounted price.

The following are the prices of 250KVA 3 phase autotransformers sold by some e-commerce websites, for your reference only.

Items Price  Capacity Source
200 kVA 3 phase autotransformer price $9531.31 380V to 220V Amazon
200 kVA 3 phase autotransformer price $9623.24 400V to 400V ebay
200 kVA three phase autotransformer price $9822.11 380V to 220V other

Benefits of choosing a 250KVA transformer from Shuogong

Choosing a three phase transformer manufactured and supplied by Shuogong Power has the following advantages:

  • Made of high quality silicon steel sheet.
  • Optional copper wire or aluminum wire.
  • Available with or without housing.
  • Configure the scroll wheel.
  • Fast delivery.
  • 100% quality assurance.
  • Sufficient power never cut corners.


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