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    300 kVA Isolation Transformer, 3 phase, 480V to 120V

    300 kVA isolation transformer is a 3 phase unit with a primary voltage of 480V and secondary voltage of 120V, it's a safe isolating transformer not only provides an increased level of protection against electric shock, but also used to step up or step down voltage of equipment.
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    Delivery date: 10-15days

    Three phase 300 kVA isolation transformer offers consistent, smooth voltage transformation at 480V AC input, 480V to 120V or 120V to 480V is possible, and other voltages are optional.
    300 kVA Isolation Transformer Specifications

    Basics Model ATOSG-200KVA
    Phase 3 phase
    Capacity 300 kVA
    Weight of Aluminium Wire Transformer Open type: 720kg
    Protected type: 870kg
    Weight of Copper Wire Transformer Open type: 810kg
    Protected type: 960kg
    Technical Parameters Primary Voltage 480V (optional: 110V/ 120V/ 208V/ 220V/ 230V/ 240V/ 380V/ 400V/ 415V)
    Secondary Voltage 120V (optional: 110V/ 208V/ 220V/ 230V/ 240V/ 380V/ 400V/ 415V/ 480V)
    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 22
    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 Wiring Method
    isolation transformer wiring method

    300 kVA Isolation Transformer Dimension
    Open type isolation transformer dimension

    Aluminium Wire Transformer Size Copper Wire Transformer Size
    Open type: a*b*c=1060*450*955mm Open type: a*b*c=990*410*855mm
    Protected type: A*B*C=1300*750*1760mm (Including an alarm) Protected type: A*B*C=1300*750*1760mm (Including an alarm)
    Installation Dimenion: D*E=600*400mm Installation Dimenion: D*E=600*400mm

    Tips: Using isolation transformer to reduce the zero voltage of UPS

    For medium and small power UPS, generally, an isolation transformer is installed at its output part; for a three-in to three-out high-power UPS, the transformer is usually at its bypass input. This method can eliminate the problem that zero voltage is low before the UPS powering on while zero voltage rises after UPS turning on. The UPS power system makes no negative impact on the power grid and load through this method.


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