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

    ATO dry-type autotransformer for sale, economical price. Function is step down the input voltage 3-phase 380V to 220/200V output, power rating 100 kVA, rated frequency 50/60 Hz, winding material copper/aluminum, cooling mode self/wind-cooled, primary and secondary windings are isolated with each other.
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    Delivery date: 6-12 days

    Three phase 380 volt to 220/200 volt step down autotransformer, 100 kVA power rating, primary and secondary windings are separated by aluminium/copper shield, input and output voltage supports customization service, long use life span and high efficiency.

    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-ASG75KVA
    Phase 3-Phase
    Capacity 100 kVA
    Input Voltage AC 380V
    Input Current 151A
    Output Voltage (Optional) AC 220V, 200V
    Output Current 262A (220V), 289A (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) 430 kg
    Dimension 650*600*900 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 100 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.


    100 KVA 3-Phase Autotransformer Details

    100 kVA 3-Phase Autotransformer Schematic Wiring Diagram

    3-Phase Autotransformer Schematic Wiring Diagram

    Tips: 100 kVA 3-phase autotransformer functions.

    • 100 kVA 3-phase autotransformer is used in applications where primary and secondary isolation is not required. It has the advantages of small size, less consumables and high efficiency.
    • Fundamentally speaking, 100 kVA 3-phase autotransformer is to save a coil and reduce costs, and it has functions of an ordinary transformer, that is, to step up or step down for the circuit voltage, isolate and reduce impedance.
    • 100 kVA 3-phase autotransformer can also be made into an AC voltage regulator to flexibly change the output voltage for use in the laboratory.
    • Power supply mode of 100 kVA 3-phase autotransformer is very suitable for the power supply of large-capacity loads. It has little interference to communication lines, so it is widely used by passenger dedicated lines and heavy-duty freight railways.
    • In the current power grid, there is almost no autotransformation below 220 kV. 3-phase autotransformer has only been used since the 220kV voltage level, and it is mostly used as the connection between the power grids.
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