Three Phase Three Leg Transformer Core

The three phase three leg transformer core is currently the most widely used structure in power transformers. It consists of three vertical core limbs and two horizontal yokes on the top and bottom. The overall shape is a rectangular frame. This structure has a clear magnetic path. The three-phase flux does not interfere with each other. Operation is stable and reliable. We produce this core type strictly according to your drawings. The capacity covers 25kVA to 10000kVA. The voltage rating supports 10kV to 110kV. Both dry-type and oil-immersed transformers can use this core structure. Our three phase three leg transformer core is a proven design.

Our company has 26 years of core manufacturing history. We have strong practical experience in process control for three-phase three-leg cores. The main challenge in making this core is ensuring consistency in height across the three limbs. It is also important to maintain horizontal alignment. If the heights differ, the upper yoke will be tilted during installation. This leads to increased noise and temperature rise in the transformer. Our operators use spirit levels and height gauges during lamination. They take real-time measurements. This ensures the limbs rise evenly and stay within the tolerance. Our three phase three leg transformer core is built for stability.

Flexible Equipment for Various Sizes

Our 4 slitting lines and 15 shearing lines can handle orders of different sizes. The shearing lines use automated CNC operations. They precisely control the cutting length and angle of each silicon steel sheet. For the joints between the limbs and yokes, we use a multi-step staggered lamination pattern. This prevents all joints from being on the same plane. It reduces magnetic resistance and the risk of local overheating. This lamination pattern requires precise layout design. Our technical team creates a special layout plan for each drawing. This ensures the optimal lamination scheme. Our three phase three leg transformer core is optimized for performance.

Custom Solutions for Non-Standard Sizes

We not only provide standard three-phase three-leg cores. We can also customize non-standard sizes based on your needs. Some clients require special window heights or limb spacing to match specific coil structures. We can adjust our lamination process to meet these requirements. Our designers work closely with you from drawing review to process confirmation and sample production. We keep communication open at every stage. This ensures the final product matches your expectations exactly. Our three phase three leg transformer core is made to your specifications.