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    50 kVA Isolation Transformer, step up/step down 480V with 400V

    Step up and step down isolation transformer to convert the voltage between 480V and 208V. Three phase unit with 50 kVA power rating, primary and secondary windings are separated by copper shield.
    Delivery date: 6-12 days

    50 kVA isolation transformer is available in the circuit of AC 50Hz/ 60Hz, it can step down 3 phase voltage 480V to 400V, can also step up 400V to 480V, suitable for both indoor and outdoor applications.

    Basics Model ATOSG-50KVA
    Phase 3 phase
    Capacity 50 kVA
    Size 610*300*650 mm (without shell); 900*500*950 mm (with shell)
    Weight 295 Kg (without shell); 360 Kg (with shell)
    Technical Parameters Primary Voltage 480V (optional: 110V/ 120V/ 208V/ 220V/ 230V/ 240V/ 380V/ 400V/ 415V)
    Secondary Voltage 400V (optional: 110V/ 120V/ 208V/ 220V/ 230V/ 240V/ 380V/ 415V/ 480V)
    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: How the noise of transformer is caused
    Specifically, there are three noise sources in the transformer including iron core, winding and cooler, which is the noise of no-load, load and cooling system. The reason of the iron core noise is that under the action of the iron core silicon steel sheet alternating magnetic field, slight change which is magnetostriction occurs. Magnetostriction causes the iron core to periodically vibrate with changes of the excitation frequency, which is caused by magnetostrictive deformation of the iron core, windings, oil tank and electromagnetic force within the magnetic shield. The reason for the vibration of the winding is that electromagnetic force is generated in the current winding, the leakage magnetic field can also make the structure vibrate.
    The reason of the electromagnetic noise is that the magnetic field induces the vibration of the iron core lamination along the longitudinal direction to generate noise, the vibration amplitude is related to the magnetic flux density of the core lamination and the magnetic properties of the iron core material, it has little relation with the load current. The electromagnetic force (and vibration amplitude) is proportional to the square of the current, and the emitted sound power is proportional to the square of the vibration amplitude.

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