28/07/2026
When it comes to transformer performance, it's often the unseen components that make the biggest impact. Paper-covered winding wires are one such element, quietly performing critical functions at the heart of every transformer.
Wound tightly around the transformer core, these conductors do more than carry current, they deliver consistent, long-term performance thanks to their expertly engineered insulation. Whether it's withstanding extreme temperatures or providing the structural integrity needed to endure mechanical stress, paper-covered wires are essential to powering the grid behind the scenes.
✅ Layer Winding Transformer Papers
Paper is generally the primary insulation material in liquid-filled transformers whose coils are wound in layers. Conductor materials are wound in layers, and insulation paper is wound between those layers as interlayer insulation. Layer winding transformers are also commonly referred to as “distribution” transformers, although some larger layer winding transformers can be called small power transformers.
✅ Paper covered winding wires
Paper Insulation for LV and HV Windings of Distribution Transformers. Papers suitable for an LV winding of a distribution transformer include uncoated and epoxy resin diamond pattern printed coated presspapers (commonly referred to as DPP), and thermally upgraded presspapers developed to provide increased efficiency, higher temperature resistance, and a smaller physical footprint.
