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    15 kVA 3-Phase Autotransformer, 380V to 220/200V

    5 out of 5 based on 2 reviews | Write a review
    Buy dry type autotransformer at affordable price online. Power rating 15kVA, steps down the input voltage 3-phase 380V to 220V/200V output, input current 23A, output 39/43A, AC circuit 50Hz or 60 Hz, optional copper/aluminum wire. Dry type auto transformer supports self-cooling or wind-cooled, F insulation class winding.
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    Delivery date: 6-12 days

    Three phase dry autotransformer is 15 kVA capacity rating, applies to AC 50/ 60Hz, step 380V primary voltage to 220/200V secondary voltage, copper or aluminum winding for choose. High quality auto-transformer with manufacturer price, making high efficiency for your work.

    Applications: The 3-phase autotransformer can be used in CNC production equipment, SMT, printing machines, electrical discharge machines, automatic plug-in machines, precision measuring equipment, laser cutting machines, plastic molding machines, medical monitoring systems, PCB drilling machines, laboratory equipment, military use Instrumentation control center, etc.


    Model ATO-ASG15KVA
    Phase 3-Phase
    Capacity 15 kVA
    Input Voltage AC 380V
    Input Current 23A
    Output Voltage (Optional) AC 220V, 200V
    Output Current 39A (220V), 43A (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 20 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 (Enclosure Included) 65 kg
    Dimension 500*450*550 mm


    • 3-phase autotransformer has enough power, the wiring is tight and neat, and does not skip turns. Coils adopt insulated H-class enameled wire, with low no-load current and low loss.
    • The 15 kVA dry-type autotransformer has built-in silicon steel sheet, which has good magnetic flux performance, high heat dissipation coefficient and low magnetic loss.
    • The autotransformer uses electrophoresis technology clamps, no burrs on the edges, rounded corners to prevent collisions, and not easy to corrode.
    • Tinned copper tube terminals and rail-type wiring ports are convenient for wiring and ensure that the power-on overload capacity is increased to the extreme.


    15KVA 3-Phase Autotransformer Details

    15 kVA 3-Phase Autotransformer Schematic Wiring Diagram

    3-Phase Autotransformer Schematic Wiring Diagram

    Tips: 3-phase autotransformer applications.

    3-phsae autotransformers are widely used in applications where primary and secondary isolation are not required. Common AC (manual rotating) voltage regulators, transformers in small household AC voltage regulators, transformers in three-phase motor auto-decompression starter boxes, etc., are all application examples of 3-phase autotransformers.

    With the rapid development of power systems in the direction of large capacity and high voltage, 3-phase autotransformers have been widely used in high-voltage power networks due to their advantages of low price and high efficiency, becoming voltage conversion equipment for transmitting important electrical energy. As one of the most important equipment in the high-voltage power grid, 3-phase autotransformer is of great significance to ensure the safe and reliable operation of the power grid and the flexible distribution of electrical energy. With the rapid development of high-speed railways, the reliability of 3-phase autotransformers is also crucial to the safe operation of high-speed railways.

    Existing reviews of 15 kVA 3-Phase Autotransformer, 380V to 220/200V
    This the transformer i looking for.
    From: Joel | Date: 30/10/2023
    Was this review helpful? Yes No (0/0)
    Can you provide IECEx flameproof isolation transformers?
    Can you provide IECEx flameproof isolation transformers?
    From: Megan | Date: 24/01/2022
    Was this review helpful? Yes No (0/0)
    ATO Responded
    Yes, we can provide IECEx flameproof transformer fit for zone 1 or at least gas group IIB.
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