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    40 kVA Isolation Transformer, 3 phase, 600 Volt to 480 Volt

    40 kVA isolation transformer is designed to change 3 phase voltage 600V to 480V, and widely used in various power supply sites with frequency 50Hz or 60Hz.
    Delivery date: 6-12 days

    High quality and safety isolating transformers particularly suited for use in control circuits and general applications such as mechanical and electronic equipment, precision machine tool, CNC machine tool, lighting, etc.

    • Dry air self cooling of cooling mode.
    • three phase unit with 40 kVA power rating.
    • Step down or step up voltage 600V with 480V.
    • Have a minimum 2 year warranty.


    Basics Model ATOSG-40KVA
    Phase 3 phase
    Capacity 40 kVA
    Size 610*300*650 mm (without shell); 900*500*950 mm (with shell)
    Weight 265 Kg (without shell); 320 Kg (with shell)
    Technical Parameters Primary Voltage 600V (optional: 110V/ 120V/ 208V/ 220V/ 230V/ 240V/ 380V/ 400V/ 415V/ 480V)
    Secondary Voltage 480V (optional: 110V/ 120V/ 208V/ 220V/ 230V/ 240V/ 380V/ 400V/ 415V/ 600V)
    Voltage Convert Single phase to single phase, three phase to three phase, three phase to single phase
    Frequency 50Hz / 60 Hz
    Work Efficiency ≥95%
    Insulation Resistance ≥5 MΩ
    Electrical Strength 3000V AC/1 min
    Noise <35-65dB (1 meter)
    Insulation Grade H level
    Wiring Mode Dyn11
    Cooling Mode Dry type air cooling
    Overload Capacity Allow more than 1.2 times rated load to work for up to 4 hours
    Working Environment Temperature -15℃~+40℃
    Humidity ≤90%RH, without condensation
    Altitude <1000m, non corrosive gas and conductive dust

    Transformer can only convert voltage and CANNOT convert frequency.
    Transformer CANNOT convert single phase voltage to 3 phase voltage.
    Input/output voltage, power rating and whether with shell of all transformers, can be customized according to clients' requirements.
    Product Application Areas
     isolation transformer application fieldTips: Difference between isolation transformer and autotransformer
    The main function of isolation transformer is to isolate the electrical equipment and Grid, it has no direct electrical connection with electric equipment and power supply and is used for safety situations or occasions with high anti-interference requirement, etc.
    Isolated type structure uses more materials and the cost is high, in addition to changing the voltage, it can also electrically isolate the input winding and output winding, input/output and zero line is also isolated to avoid the danger of touching the charged body at the same time. Besides, with the function of filter performance and high security, isolation transformer can also restrain various interferences.
    Autotransformer is a self-coupling transformer, its structure is relatively simple and the cost is low, input/output and zero line are shared to use. The secondary side of the transformer is a part of the primary side, the primary and secondary side share a same winding, the two coils make use of the electric current difference to cut the magnetic line and realize voltage transformation. It is generally used to boost voltage of the direct current, the output and input of the transformer has direct electrical connection and safety performance is poor.
    Autotransformer is similar to three-terminal adjustable resistance. Because the voltage of direct current cannot be directly boosted and it needs to go through the electronic components, autotransformer is generally used to adjust the voltage of the equipment.

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