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    80 kVA Three Phase Isolation Transformer, 480V to 380V, Step Up/Down

    SKU: PH-T-SG80KVA
    $9,336.51
    ● 80 kVA 3-phase isolation transformer, stable voltage conversion from 480V to 380V. ● Low operating cost and reduced heat generation, ideal for a wide range of power supply applications. ● Designed for 50Hz / 60Hz power supply environments; multiple voltage configurations available. ● Aluminium or copper winding; open type or IP 24 enclosure; optional movable wheels. ● Suited for control circuits, CNC machine tools, precision machinery, mechanical & electronic equipment, and lighting.
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    🚚 Free shipping
    ⏱️ Delivery: 6-12 days
    🔙 30-day Returns
    Overview

    PowerHome's 80 kVA three-phase isolation transformer is purpose-built for cost-efficient, low-heat voltage conversion between 480V and 380V. Lower operating costs and reduced heat emissions make it a practical long-term choice across a wide range of power supply sites, from CNC machine tool workshops and precision machining centres to control circuit panels, lighting systems, etc. Compatible with 50 Hz and 60 Hz grids, its flexible voltage configuration on both sides to suit diverse international project requirements.

    80 kVA three-phase isolation transformer feature

    Feature

    • Lower Operating Costs: Reducing electricity running costs and cooling infrastructure requirements across the transformer's full service life.
    • 480V to 380V: Directly bridges the 480V industrial distribution standard of North America with the 380V standard common across Europe, China, and Asia.
    • Broad Application Fit: Designed for use in control circuit panels, CNC machine tools, precision machine tools, mechanical and electronic equipment, and industrial lighting.
    • Multi-voltage & Dual-frequency: Both primary and secondary voltages are independently selectable from 120V to 480V across standard values, with 50 Hz / 60 Hz compatibility.
     
    1. Details

      1. Input Voltage Indicator: Shows if the primary side is powered and receiving the correct input voltage.
      2. Output Current Indicator: Confirms current flow on the secondary side when a load is connected.
      3. Output Voltage Indicator: Indicates whether the output voltage is within the normal range.
      4. Input Voltmeter: Displays real-time input voltage for quick verification.
      5. Output Ammeter: Shows real-time output current to monitor load conditions.
      6. Output Voltmeter: Displays real-time output voltage to ensure a stable supply.
    60 kVA to 100 kVA three-phase isolation transformer details

    80 kVA Three-phase Isolation Transformer Schematic Diagram

    60 kVA to 100 kVA three-phase isolation transformer schematic diagram

    80 kVA Three-phase Isolation Transformer Installation Dimensions

    60 kVA to 100 kVA three-phase isolation transformer installation dimensions

     

    Aluminium Wire Transformer Size Copper Wire Transformer Size
    Open Type: a*b*c=760*370*600 (mm) Open Type: a*b*c=560*380*530 (mm)
    Mounting Size: d*e=420*220 (mm) Mounting Size: d*e=380*230 (mm)
    Protected Type: A*B*C=600*1050*980 (mm) Protected Type: A*B*C=600*1050*980 (mm)
    Specs
    Basics
    Phase 3-phase
    Capacity 80 kVA
    Weight-Aluminium Winding Open type: 320 kg
    Protected type: 385 kg
    Weight-Copper Winding Open type: 325 kg
    Protected type: 395 kg
    Technical Parameters
    Primary Voltage 480V (Optional: 190V/ 208V/ 220V/ 230V/ 240V/ 380V/ 400V/ 415V/ 480V)
    Secondary Voltage 380V (Optional: 190V/ 208V/ 220V/ 230V/ 240V/ 380V/ 400V/ 415V/ 480V)
    Voltage Convert 3-phase to 3-phase
    Frequency 50 / 60 Hz
    Winding Material Aluminium / Copper Wire (Optional)
    Work Efficiency ≥ 95%
    Insulation Resistance ≥ 50 MΩ
    Dielectric Strength 3000V AC / 1 min
    Noise < 35~65 dB (at 1 m)
    Insulation Grade Class H
    Wiring Mode Dyn11
    Cooling Mode Dry-type, natural air cooling
    Overload Capacity Allow more than 1.2 times the rated load to work for up to 4 hours
    Enclosure Protection Grade IP 24
    Certificate CE, ISO
    Warranty 12 months
    Working Environment
    Ambient Temperature −15 °C ~ +40 °C
    Relative Humidity ≤ 90% RH, non-condensing
    Altitude < 1000 m, free of corrosive gas and conductive dust

    Note:

    1. The transformer can only convert voltage, and CANNOT convert frequency.
    2. The transformer CANNOT convert 1-phase voltage to 3-phase voltage.
    3. Input/output voltage, power rating, and whether a shell for all transformers can be customized to meet clients' requirements.
    Application
    Three-phase isolation transformer for metro and rail transit

    Metro & Rail Transit

    Three-phase isolation transformer for manufacturing and machine shops

    Manufacturing & Machine Shops

    Three-phase isolation transformer for commercial buildings

    Commercial Buildings

    Three-phase isolation transformer for oil, gas and petrochemical

    Oil, Gas & Petrochemical

    FAQ

    Q1. How do lower heat emissions benefit an 80 kVA installation?

    At 80 kVA, even modest reductions in heat output have a meaningful practical impact. Lower heat emissions reduce the thermal load on the surrounding switchroom or plant room, lowering the air conditioning or ventilation capacity required to maintain safe operating temperatures. Cooler operation also extends insulation service life: transformer insulation degrades faster at higher temperatures, so a lower operating temperature directly translates to fewer premature failures and a longer replacement cycle, which contributes directly to the lower operating costs.

    Q2. Can this 80 kVA isolation transformer be used for both CNC machine tools and general lighting on the same secondary supply?

    Yes — at 80 kVA, the secondary output has sufficient capacity to supply mixed loads simultaneously, including CNC machine tool control panels, precision machinery, mechanical and electronic equipment, and industrial lighting, provided the total connected load does not exceed the rated capacity. The isolation transformer's galvanic separation between primary and secondary means that noise or disturbances generated by motor loads on the secondary bus are prevented from propagating back to the primary grid, and vice versa.

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