Triangular 3D Open-type Folded Cores

The triangular 3D open-type folded cores represent an advanced branch of three-dimensional wound core technology. They combine the three-phase balance advantage of wound cores with the transport convenience of an open-folded structure. The product has a triangular three-dimensional frame. It also has a designed opening that allows the core to be opened on site. This makes it easy to place around the coils before closing. We use high-permeability grain-oriented silicon steel coils from Baowu and Ansteel. Our precise winding and bending process ensures that the magnetic performance at the opening is not affected. Our triangular 3D open-type folded cores offer you the best of both worlds.

Our company holds 3 invention patents. One of these directly relates to optimizing the core production system. This patent provides the technical foundation for mass production of these cores. In addition, our 19 utility model patents cover lamination positioning, clamping tools, and testing equipment. These tools ensure the production precision of this complex core structure. From material cutting to final forming, every step is supported by specialized fixtures. This effectively reduces human error. Our triangular 3D open-type folded cores are made with advanced technology.

Applications and Transport Advantages

This core type is mainly used in energy-saving distribution transformers, dry-type transformers, and oil-immersed transformers. For export projects or projects in remote areas, the open-folded design greatly reduces transport difficulty. The core is shipped in a folded state. This significantly reduces the space it occupies. It improves container utilization. At the destination, site workers can easily unfold the core and place it around the coils. We provide detailed opening and closing instructions with each shipment. Our triangular 3D open-type folded cores make on-site assembly simple.

Rigorous Testing Before Shipment

Our quality inspectors verify the folded interface dimensions and magnetic performance before shipment. We simulate the flux distribution of the core in the closed state. This ensures that the magnetic resistance meets the design specifications after the interface is closed. Each product comes with a test report. This report lists core loss, excitation current, and dimensional tolerances. We believe that transparent data and reliable quality build long-term cooperation. They are also a clear sign of our responsibility to you. Our triangular 3D open-type folded cores deliver performance you can trust.