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    20 kVA Isolation Transformer, single phase, 480V to 230V

    The 20 kVA capacity tansformer from ATO is safety and isolation single phase transformer, it can step down 480 volt input voltage to output 230, can step up 230 volt to 480 volt as well. This good price isolation transformer provides enhanced electrical isolation between the line supply and the application.
    Free shipping
    Delivery date: 6-12 days

    ATO-DG20KVA single phase isolation transformer is 20 kVA capacity, applies to AC 50/ 60Hz, convert 480V voltage to 230V voltage. It has natural air self cooling mode, primary and secondary windings are separated by aluminum shield, long life span and high efficiency.

    20 kVA Isolation Transformer Specifications

    Model ATO-DG20KVA
    Phase Single phase
    Capacity 20 kVA
    Primary Voltage 480V AC (optional: 110V/ 120V/ 208V/ 220V/ 230V/ 240V/ 380V/ 400V/ 415V)
    Secondary Voltage 230V AC (optional: 24V/ 36V/ 48V/ 110V/ 120V/ 208V/ 220V/ 240V/ 380V/ 400V/ 415V/ 480V)
    Frequency 50Hz / 60Hz
    Winding Material Aluminium/Copper wire (Optional)
    Work Efficiency ≥95%
    Insulation Resistance ≥50 MΩ
    Electrical Strength 2000V AC/1 min
    Noise ≤35dB (1 meter)
    Insulation Grade Grade B (130℃), Grade F (155℃), Grade H (180℃)
    Wiring Mode △/Yn11
    Cooling Method Natural or air cooling
    Overload Capacity Allow more than 1.2 times rated load to work for up to 1 hour
    Certification CE, ISO
    Temperature -15℃~+45℃
    Humidity ≤90%RH, without condensation
    Altitude <2000m, non corrosive gas and conductive dust
    Size 360*290*450 mm (open type);
    510*440*600 mm (protected type)
    Weight About 95 kg (open type);
    About 115 kg (protected type)

    Transformer can only convert voltage and CANNOT convert frequency.
    Transformer CANNOT convert single phase voltage to 3 phase voltage.
    Support voltage customization, various specifications customization.

    Single Phase Isolation Transformer Schematic Diagram
    DG isolation transformer schematic diagram
    20 kVA Isolation Transformer Dimension
    20 kva isolation transformer dimensionTips: What are the differences among a transformer, a voltage stabilizer and a voltage regulator?
    A transformer can control the unstable voltage in a certain voltage range and protect the equipment from being damaged. A voltage regulator converts a specific voltage to the needed voltage of an equipment, each equipment should be equipped with a voltage regulator to prevent from burning out equipment caused by excessive voltage change. A voltage stabilizer is used to stabilize the voltage. Generally, a voltage regulator is a kind of test equipment that can change the voltage, while a voltage stabilizer can only adjust the voltage in a certain range. The voltage regulator can adjust the high voltage, but can’t insulate it, while the transformer is generally used to isolate, such as the isolation transformer, the transformer can be used to step up or step down the voltage. A voltage stabilizer is just a way to stabilize the voltage.

    Need more detail of ATO isolation transformer? Here is a good explanation about it in this video. To test the accuracy of the transformer voltage, we take a 3000 VA single phase 220V iuput to 110V output isolation transformer as an example.

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