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Threephase Electric Transformer

In demanding industrial and utility applications, a reliable and robust power conversion solution is non-negotiable. Our Threephase Electric Transformer stands as the cornerstone of such systems, engineered to deliver exceptional performance and longevity. These transformers are the workhorses behind stable grid distribution, large-scale manufacturing facilities, and commercial complexes, efficiently stepping voltage up or down as required. For installations exposed to the elements, our specialized Outdoor Oil Immersed Transformer range offers superior insulation and cooling, ensuring unwavering operation in diverse weather conditions. As a premier choice for utility companies and industrial parks, our Outdoor Threephase Transformer models combine rugged construction with advanced engineering for maximum uptime and safety.


The core of the Threephase Electric Transformer is its meticulously designed construction, which directly influences its efficiency, noise levels, and thermal management. We utilize premium grain-oriented silicon steel for the core to minimize hysteresis and eddy current losses. The windings, whether copper or aluminum, are carefully insulated and configured to handle the specified voltage and current ratings with a significant safety margin. Advanced manufacturing techniques ensure precise assembly, resulting in a product that meets stringent international standards for performance and safety. Key operational parameters include:

Detailed specifications for our standard range are provided below:

Model Series Capacity Range (kVA) Primary Voltage (kV) Secondary Voltage (kV) Vector Group Insulation Class
DT-11 50 - 2500 Up to 36 0.4, 6.6, 11, 33 Dyn11, Yyn0 A
ST-15 3150 - 10000 66, 110, 132 6.6, 11, 33 YNd11, YNy0 A
OT-20 10000 - 60000 220, 330 66, 110, 132 YNd11 A

Each Threephase Electric Transformer undergoes rigorous factory testing, including routine tests like turns ratio, winding resistance, and impedance measurement, as well as type tests such as lightning impulse and temperature rise tests. This comprehensive validation process guarantees that every unit performs to its published specifications upon installation.

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