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    5 kVA Isolation Transformer, single phase, 400V to 208V

    5 out of 5 based on 1 reviews | Write a review
    The provided lower cost 5 kVA isolation transformer, single phase, is designed to use in alternating current (AC) 50Hz or 60 Hz, step down/ up the voltage 400V to 208V/ 208V to 400V, the standard type 3R enclosure makes the unit suitable for both indoor and outdoor applications.
    Free shipping
    Delivery date: 6-12 days

    5 kVA Isolation Transformer Features

    • Suitable for power supply sites with frequency AC 50/60Hz.
    • Transfer single phase 400 volt primary voltage to 208 volt secondary voltage, or 208 volt to 400 volt.
    • Dry type natural air self cooling of cooling mode.
    • Better dielectric strength and insulation resistance.
    • Lower noise, lower temperature rise, higher safety.


    Model ATO-DG5KVA
    Phase Single phase
    Capacity 5 kVA
    Primary Voltage 400V AC (optional: 110V/ 120V/ 208V/ 220V/ 230V/ 240V/ 380V/ 400V/ 415V/ 480V)
    Secondary Voltage 208V AC (optional: 24V/ 36V/ 48V/ 110V/ 120V/ 208V/ 220V/ 230V/ 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 250*265*280 mm (without shell);
    350*365*380 mm (with shell)
    Weight About 50 kg (without shell);
    About 60 kg (with shell)

    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
    5 kVA Isolation Transformer Dimension
    5kva isolation transformer dimensionTips: Protective device to be installed in a transformer

    1. Gas protection that reflects the internal faults of transformer oil tank and oil surface reduction.
    2. Longitudinal differential protection or current fast-trip protection that reflects the interphase short circuit of transformer winding and outgoing line, the single-phase grounding short circuit of neutral-point solid ground winding and outgoing line.
    3. Overcurrent protection that reflects the external interphase short circuit of transformer and plays as the differential protection reserve of gas protection box (or current fast-trip protection).
    4. Zero-sequence current protection that reflects the external and internal grounding short-circuit of the transformer in the neutral-point solid ground system.
      Overload protection that reflects the symmetrical overloading of the 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 5 kVA Isolation Transformer, single phase, 400V to 208V
    What is the output Hz?
    What is the output Hz of this 5 kVA single phase isolation transformer?
    From: Frank | Date: 19/06/2018
    Was this review helpful? Yes No (0/0)
    ATO Responded
    Dear friend, whatever the input frequency is, if you are in a 60Hz area, it will be 60Hz. If you are in a 50Hz area, it will be 50Hz. Our isolation transformers transform the voltage only.
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