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SG - Three-phase dry-type transformer

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SG Series

SG - Three-phase dry-type transformer

Suitable for AC 50Hz circuits, serving as control power for machine tools, mechanical equipment, low-voltage switchgear, and electrical drive control equipment; also suitable as a small power source. Complies with.
BuildingIndustrial
  • Core parameters
  • Standard: Q/ZT 525.
  • Overall efficiency: ≥95%
  • SVG(kvar): 50/100
  • Dynamic response time: ≤100us
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    Product Details

    Learn more about our products

    Product Model Three-Phase Dry-Type Transformer
    Rated Capacity 340000 kVA
    Rated Voltage Ratio （1100/√3/-4×1.25%）/27 kV
    Short-Circuit Impedance 14 %
    Rated Frequency 50 Hz
    Connection Group Designation YND11
    Insulation Level S/1800L/2250AC1100 （5min）
    LI325AC140/LI200AC85 kV
    Cooling Method ODAF
    No-Load Loss 148 kW
    Load Loss 728 kW
    Temperature Rise Limit Top layer oil: 50K | Average winding oil: 60K
    Noise (Sound Pressure Level) ≤75 dB(A)

    * For specific product requests, please contact us for customized solutions to your needs.

    01.

    Core advantages

    High reliability
    Optional oil-free design, zero leakage; C5-M corrosion resistant, strong short-circuit withstand capability.
    Compact and lightweight
    Weight reduced by 17% and volume reduced by 16.5%, saving platform space.
    Vibration and tilt resistance
    Designed specifically for floating platforms, it withstands continuous swaying and impact.
    High reliability
    Optional oil-free design, zero leakage; C5-M corrosion resistant, strong short-circuit withstand capability.
    Compact and lightweight
    Weight reduced by 17% and volume reduced by 16.5%, saving platform space.
    Vibration and tilt resistance
    Designed specifically for floating platforms, it withstands continuous swaying and impact.
    02.

    Application scenarios

    Industrial & Building Solutions

    For factories, commercial buildings, infrastructure and urban power supply.
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    941038066cad8f532b538909819a140b103f5468
    01.

    Authoritative Certification

    CE certification
    EU safety certification, compliant with EN/IEC standards
    UL
    Underwriters Laboratories certification, North American market access
    IEC
    International Electrotechnical Commission (IEC) standards are universally applicable.
    ISO 9001
    Quality management system certification ensures control over the entire factory production process.
    Factory inspection report
    Each transformer comes with a test report; 100% inspection.
    02.

    Quality Assurance

    Partner factory audit
    Regular on-site factory inspections are conducted, and manufacturers with ISO and CE certifications are preferred.
    Comprehensive Quality Control
    Raw Material Inspection →
    Production Process Supervision →
    Pre-shipment Full Inspection
    Traceable Records
    A production record is established for each piece of equipment, and key processes are documented.
    Third-party inspection support
    We can commission inspections by organizations such as SGS/BV upon customer request.
    01.

    Technical Documents

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    Group 422

    NDKH-40 Control Transformer External Dimensions Drawing 202503.dwg

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    Group 422

    NDKH-40 Control Transformer External Dimensions Drawing 202503.PDF

    23.01 KB
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    02.

    Certification Materials

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    Group 422

    NDKH-40 Control Transformer External Dimensions Drawing 202503.dwg

    184.56 KB
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    Group 422

    NDKH-40 Control Transformer External Dimensions Drawing 202503.PDF

    23.01 KB
    Download
    03.

    Company Profile

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    Group 422

    NDKH-40 Control Transformer External Dimensions Drawing 202503.dwg

    184.56 KB
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    Group 422

    NDKH-40 Control Transformer External Dimensions Drawing 202503.PDF

    23.01 KB
    Download

    Contact information

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