Paper Covered Magnet Wire

Paper Covered Magnet Wire is a type of insulated winding wire made from high-conductivity annealed copper or aluminium, wrapped with layers of electrical-grade kraft paper or crepe paper. This type of magnet wire is specifically engineered for oil-filled transformers, reactors, and other high-voltage electrical equipment where thermal stability, impregnation compatibility, and mechanical durability are essential.

Key Features:

• 🧻 Layered Paper Insulation: High-grade kraft or crepe paper tightly wound around the conductor

• ⚡ Excellent Dielectric Strength: Ideal for high-voltage insulation in oil-immersed systems

• 🧪 Compatible with Transformer Oils: Paper absorbs oil for better insulation and cooling

• 🔥 Thermal Class: Typically up to 90°C (Class A) or higher with special paper coatings

• 🧰 Robust & Flexible: Withstands mechanical stress during coil winding and installation

Construction Details:

• Conductor: Round, rectangular, or square electrolytic copper or EC grade aluminium

• Paper Covering: Single, double, or multi-layered kraft, crepe, or thermally upgraded paper

• Width/Thickness: Paper thickness and layers customized to meet insulation level requirements

Applications:

• 🏭 Power and Distribution Transformers (Oil-Immersed)

• 🔋 Chokes and Reactors

• ⚙️ High-Voltage Coils

• 🔄 Tap Changers

• 🛠️ Instrument and Control Transformers

Benefits:

• ✅ Superior Oil Absorption & Impregnation

• ✅ High Dielectric Strength and Insulation Resistance

• ✅ Minimized Risk of Partial Discharge

• ✅ Excellent Performance in Hermetically Sealed Environments

• ✅ Available in Custom Shapes and Sizes

Options Available:

• Paper types: Kraft, Crepe, DPC (Double Paper Covered), or Thermal-Resistant Paper

• Shapes: Round, Rectangular, Square

• Conductor: Bare, Tinned, or Silver-plated Copper

• Custom paper wrapping (spiral, concentric, longitudinal) as per application needs

Need technical guidance or custom sizing?
Contact us today to discuss your requirements. Our team will assist you with technical details, price quotes, and delivery timelines.