Dry Type Transformers Air Insulated VPI

SG(B) Air-Barrier Dry-Type Transformer (VPI) – Forced Air Cooling (AF)
SG(B) Air-Barrier Dry-Type Transformer (VPI) – Forced Air Cooling (AF)
SG(B) Air-Barrier Dry-Type Transformer (VPI) – Forced Air Cooling (AF)
SG(B) Air-Barrier Dry-Type Transformer (VPI) – Forced Air Cooling (AF)
SG(B) Air-Barrier Dry-Type Transformer (VPI) – Forced Air Cooling (AF)
SG(B) Air-Barrier Dry-Type Transformer (VPI) – Forced Air Cooling (AF)

SG(B) Air-Barrier Dry-Type Transformer (VPI) – Forced Air Cooling (AF)

The TAILI SG(B) air-barrier dry-type transformer (VPI, AF) is designed for high-load and variable-load applications, equipped with an intelligent cooling fan system to enhance heat dissipation.

Compared with the natural air-cooled version, the fan-assisted design allows higher output capacity, stronger overload capability, and improved operational flexibility, while maintaining excellent fire safety and environmental performance.

It is ideal for power plants, industrial facilities, petrochemical sites, high-rise buildings, shopping malls, and other demanding applications.

The transformer meets IEC and IEEE standards.


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Basic Info.

Primary Voltage35kV, 20kV, 10 kV
Secondary Voltage400 V
Vector GroupDyn11, Dyn5
Impedance4%, 6%
Capacity (Power Rating)400 kVA
H.V. Tap Range±2 × 2.5% or others
BIL (Basic Insulation Level)30–150 kV
StandardsIEC, IEEE, ANSI, DOE
CertificatesCE, SGS, CNAS




Main Features of VPI

1. Enhanced Overload Capacity – Forced air cooling increases output capacity during peak loads.

2. Intelligent Temperature Control – Fans automatically start and stop based on winding temperature.

3. High Fire Safety – H-class flame-retardant insulation, no combustion or toxic gases.

4. Energy-Efficient & Low Noise – Optimized airflow design ensures efficient cooling with minimal noise.

5. Reliable in Harsh Conditions – NOMEX insulation provides excellent moisture and thermal resistance.

6. Flexible Operation – Suitable for fluctuating loads and future capacity expansion.

7. Long Service Life – Reduced thermal stress improves transformer lifespan.


01 Production of air-barrier dry-type transformer

Air insulated Dry type transformer VPI

02 Finished Area of VPI dry type transformers

Air insulated Dry type transformer VPI

Package and Shipping

Air insulated Dry type transformer VPI

WHY CHOOSE US?


Quality Control : Our quality control system is comprehensive and multi-faceted. From the initial selection of high-grade raw materials sourced from reliable suppliers, we ensure that every component used in our products meets the highest quality standards.

Routine tests:

Measurement of winding resistance

Measurement of voltage ratio

Check of vector group

Mesurement of impendance voltage and load loss

Measurement of no load oss and current

Separate-source voltage withstand test

Induced overvoltage withstand test

Dimension checking


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