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

    3-phase step down autotransformer for sale, good price. Rated capacity 5kVA, input voltage 380V (current 13A), output voltage 220V/200V (current 14A), frequency 50/60 Hz, copper/aluminum wire for selection. Dry type auto transformer, electromagnetic induction, the primary and secondary windings are insulated separately.
    Free Shipping Worldwide
    Delivery date: 6-12 days

    5 kVA autotransformer is a dry type auto-transformer, mainly step down 3-phase 380V input to 220V/200V output, applicable frequency 50Hz/60Hz, self-cooling or wind-cooled is available, optional copper or aluminum wires.

    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-ASG5KVA
    Phase 3-Phase
    Capacity 5 kVA
    Input Voltage AC 380V
    Input Current 8A
    Output Voltage (Optional) AC 220V, 200V
    Output Current 13A (220V), 14A (200V)
    Frequency 50Hz / 60Hz
    Winding Material (Optional) Aluminum Wire, Copper Wire
    Cooling Method Self-Cooling or Wind-Cooling
    Working Efficiency ≥98%
    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) 35 kg


    • 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 5 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.

    5 kVA 3-Phase Autotransformer Dimension Diagram (Unit: mm)

    • Autotransformer Main Body

    5 kVA 3-Phase Autotransformer Dimension Diagram

    • Enclosure

    5 kVA 3-Phase Autotransformer Enclosure Dimension Diagram

    Winding Material Aluminum Wire Copper Wire
    Autotransformer Main Body Dimension
    L 280 280
    S 220 220
    H 240 240
    Installation Hole Distance
    A 180 180
    B 110 110
    Enclosure Dimension
    L*S*H 430*360*360 430*360*360

    5 kVA 3-Phase Autotransformer Schematic Wiring Diagram

    3-Phase Autotransformer Schematic Wiring Diagram

    Tips: 3-phase autotransformer advantages.

    • 3-phase autotransformer consumes less materials and has low cost. The amount of silicon steel sheet and copper wire used in transformer is related to the rated induced potential and rated current of the winding (that is, it is related to the capacity of winding). The winding capacity of 3-phase autotransformer is reduced, the material consumed is also reduced, and the cost is reduced, so the price is lower.
    • 3-phase autotransformer has low loss and high efficiency. Due to the reduction in the amount of copper wire and silicon steel sheet, under the same current density and magnetic flux density, the copper loss and iron loss of a 3-phase autotransformer are less than that of the dual-winding transformer, so the benefit is higher.
    • 3-phase autotransformer is easy to transport and install. 3-phase autotransformer is lighter in weight, smaller in size and smaller in footprint than the dual-winding transformer of the same capacity.
    • 3-phase autotransformer improves the ultimate manufacturing capacity of the transformer. The ultimate manufacturing capacity of transformers is generally limited by transportation conditions. Under the same transportation conditions, the manufacturing capacity of an autotransformer is larger than that of the double-winding transformer.
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