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    100 kVA Three Phase Isolation Transformer, 208V to 400V, Step Up/Down

    SKU: PH-T-SG100KVA
    $14,085.71
    ● 3-phase isolation transformer released now, 100 kVA, flexible voltage conversion between 400V and 208V. ● Dry-type air self-cooling design, no oil, no fans, maintenance-free operation. ● Suitable for 50Hz / 60Hz applications; multiple voltage configurations selectable on both sides. ● Optional movable wheels; aluminium or copper winding; CE and ISO certified. ● Higher safety rating; suited for control circuits, CNC machine tools, precision machinery, and lighting.
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    ā±ļø Delivery: 6-12 days
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    Overview

    This 100 kVA three-phase isolation transformer delivers stable and efficient voltage conversion between 400V and 208V, supporting both step-up and step-down applications in industrial power systems. Built with an IP-rated enclosure and dry-type air cooling, the isolation transformer is well-suited for both indoor and outdoor installations, ensuring dependable performance for heavy-duty equipment and power distribution environments.

    100 kVA three-phase isolation transformer feature

    Feature

    • Indoor and Outdoor Rated: IP-rated enclosure (optional) expands installation options beyond switchrooms and plant rooms to outdoor switchgear enclosures, rooftop installations, and exposed industrial sites.
    • Higher Safety Isolation: Designed to a higher safety standard for control circuits and general industrial applications, including CNC machine tools, precision machinery, etc.
    • 400V to 208V Voltage Conversion: Directly bridges the 400V standard common across Europe, India, and Asia with the 208V three-phase distribution standard prevalent in North American commercial and light industrial facilities.
    • Dry-Type Air Self-Cooling: No oil, no pumps, no external fans — natural air cooling at 100 kVA eliminates all fluid-related maintenance.
     
    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

    100 kVA Three-phase Isolation Transformer Schematic Diagram

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

    100 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*400*685 (mm) Open Type: a*b*c=780*360*630 (mm)
    Mounting Size: d*e=500*350 (mm) Mounting Size: d*e=500*350 (mm)
    Protected Type: A*B*C=650*1150*1080 (mm) Protected Type: A*B*C=650*1150*1080 (mm)
    Specs
    Basics
    Phase 3-phase
    Capacity 100 kVA
    Weight-Aluminium Winding Open type: 335 kg
    Protected type: 425 kg
    Weight-Copper Winding Open type: 340 kg
    Protected type: 435 kg
    Technical Parameters
    Primary Voltage 208V (optional: 190V/ 208V/ 220V/ 230V/ 240V/ 380V/ 400V/ 415V/ 480V)
    Secondary Voltage 400V (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 MĪ©
    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 22
    Certificate CE, ISO
    Warranty 12 months
    Working Environment
    Ambient Temperature āˆ’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. What does the IP-rated enclosure add at 100 kVA compared with a standard indoor unit?

    At 100 kVA, a transformer is a significant piece of infrastructure that may need to be located where a dedicated indoor electrical room is not available or practical. The IP-rated enclosure provides protection against solid object ingress and water splashing, allowing installation in outdoor switchgear enclosures, covered rooftop plant rooms, and semi-exposed industrial environments — significantly increasing site flexibility for project engineers and electrical contractors.Ā 

    Q2. Is a 100 kVA isolation transformer suitable for powering a data centre UPS input or IT equipment room?

    Yes — 100 kVA isolation transformers are commonly used as the supply-side interface for UPS systems, server room distribution boards, and IT equipment rooms, particularly where the local grid voltage (400V in Europe and Asia) needs to be converted to the 208V standard used by North American-specification UPS units, PDUs, and rack-mounted equipment. The galvanic isolation eliminates common-mode noise and ground loop interference between the building's main distribution and the sensitive IT load — a standard power quality requirement in data centre design guidelines, including the Uptime Institute Tier standards and ASHRAE recommendations.

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