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

    5 out of 5 based on 2 reviews | Write a review
    3-phase autotransformer has 1 kVA rated capacity, for step down the voltage 380V to 220V/200V, current input 1.5A, output 2.6A/2.8A, frequency 50/60 Hz, electromagnetic induction. The primary and secondary windings of dry type auto transformer are insulated from each other, stable output, low price.
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    Three phase autotransformer for sale online. Rated capacity 1 kVA, input voltage 380V, input current 8A, output voltage 220V or 200V, output current 2.6A or 2.8A, frequency 50/60 Hz. Functions of the dry type 3-phase auto transformer is step down the voltage, the primary and secondary windings are insulated separately.

    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-ASG1KVA
    Phase 3-Phase
    Capacity 1 kVA
    Input Voltage AC 380V
    Input Current 1.5A
    Output Voltage (Optional) AC 220V, 200V
    Output Current 2.6A (220V), 2.8A (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) 30 kg
    Dimension 400*400*450 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.
    • 1 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.


    1KVA 3-Phase Autotransformer Details

    1 kVA 3-Phase Autotransformer Schematic Wiring Diagram

    3-Phase Autotransformer Schematic Wiring Diagram

    Tips: Autotransformer definition.

    An autotransformer refers to a transformer with primary and secondary windings on the same winding. The primary and secondary windings are directly connected in series and coupled by themselves. According to structure, autotransformers can be divided into variable type and fixed type. Auto-coupling means electromagnetic coupling. Ordinary transformers transfer energy through the electromagnetic coupling of the primary and secondary coils, and there is no direct electrical connection between the primary and secondary sides. The primary and secondary sides of an autotransformer have a direct electrical connection, and its low-voltage coil is a part of the high-voltage coil. Autotransformers are also used as protection equipment in the protection equipment of communication lines.

    Existing reviews of 1 kVA 3-Phase Autotransformer, 380V to 220/200V
    Satisfied with 3-Phase Autotransformer
    I just got this yesterday. Use this three-phase transformer for my printing press. Great value for its price. It really works well to adjust voltage. Easy-built and the item is good.
    From: selina | Date: 07/11/2022
    Was this review helpful? Yes No (0/0)
    Do you proivde Dd0 type transformer?
    Do you proivde Dd0 type transformer?
    From: Trudy | Date: 08/11/2021
    Was this review helpful? Yes No (0/0)
    ATO Responded
    Yes, and we can customize based on your specs/requirements.
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