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

    5 out of 5 based on 2 reviews | Write a review
    Step up and step down isolation transformer to convert the voltage between 480V and 400V. Three phase unit with 50 kVA power rating, primary and secondary windings are separated by aluminium/ copper shield.
    30-day Returns
    Delivery date: 10-20 days

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

    50 kVA Isolation Transformer Specifications

    Basics Model ATO-SG50KVA
    Phase 3 phase
    Capacity 50 kVA
    Weight of Aluminium Wire Transformer Open type: 225kg
    Protected type: 280kg
    Weight of Copper Wire Transformer Open type: 230kg
    Protected type: 265kg
    Technical Parameters Primary Voltage 480V (Optional: 120V/ 190V/ 208V/ 220V/ 230V/ 240V/ 380V/ 400V/ 415V/ 480V)
    Secondary Voltage 400V (Optional: 120V/ 190V/ 208V/ 220V/ 230V/ 240V/ 380V/ 400V/ 415V/ 480V)
    Voltage Convert Three phase to three phase
    Frequency 50Hz / 60 Hz
    Winding Material Aluminium/Copper wire (Optional)
    Work Efficiency ≥95%
    Insulation Resistance ≥50 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
    Enclosure Protection Grade IP 24
    Certificate CE, ISO
    Warranty 12 months
    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.

    3 Phase Isolation Transformer Schematic Diagram

    ATO isolation transformers schematic diagram

    3 Phase Isolation Transformer Details

    3-phase isolation transformer details

    50 kVA Isolation Transformer Installation Dimension

    3 phase isolation transformer dimension

    Aluminium Wire Transformer Size Copper Wire Transformer Size
    Open type: a*b*c=560*330*550mm Open type: a*b*c=500*350*470mm
    Mouting size: d*e=380*190mm Mouting size: d*e=340*205mm
    Protected type: A*B*C=550*950*930mm Protected type: A*B*C=455*660*710mm

    Tips: How the noise of 3 phase isolation transformer is caused

    Specifically, there are three noise sources in the 3 phase isolation 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.

    How to Test Step Up & Step Down Isolation Transformer?

    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.

    Existing reviews of 50 kVA Isolation Transformer, Step up/Step down 480V with 400V
    not our first attempt to have it
    we are trusted resellers, we had not used this item before, but our customers trust your products, we are at their disposal as long as they trust your services and devices.

    our first step towards you, but not the last hopefully!!
    From: BUSHRA | Date: 05/03/2024
    Was this review helpful? Yes No (0/0)
    I need to convert an existing 415V 3 phase supply to a single phase 230V output efficiently
    I need to convert an existing 415V 3 phase supply to a single phase 230V output efficiently. It needs to handle 40 kVA min. Can this transfomer do that?
    From: Norman Gibson | Date: 04/09/2018
    Was this review helpful? Yes No (0/0)
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