Field Coils

Stationary or rotating electromagnetic windings that produce the primary magnetic field in synchronous machines. 'Strip-on-edge' refers to the use of flat copper strip wound vertically for space and performance efficiency.

• Construction & Materials: Made from edge-wound copper strip with mechanically stable formers and rigid supports; configurations may include embedded cooling ducts or spacers.
• Technical Spec: High-dielectric strength insulation systems (Class F or H), including resin-rich mica/glass layers and optional VPI treatment.
• Applications: Synchronous motors and generators, hydroelectric and marine alternators, and large rotating machines with continuous or pulsed field excitation.
• Manufacturing & QC: Formed with custom winding mandrels and heat-cured resins; tested using hipot, insulation resistance, and thermal cycling procedures in accordance with IEC/IEEE standards.