RUPALIT® Planar; an interesting alternative for special winding constructions.

Easy to work with, easy to terminate.

Technical and economic benefits:

  • Minimizes "hot spots"
  • High copper fill factor due to profiled construction
  • Capable of winding on small radius bobbins
  • Field compensated winding possible
  • Compact finish
  • Easy to terminate

Examples of application:

  • High current out put transformers
  • Single turn high power transformers
  • Radar transformers
  • Low voltage rectifier transformers
  • Induction heating equipment
  • High power chokes
  • Synchronous converter chokes


  • RUPALIT® with enamelled copper wires (magnet wire) (0.02-1.6mm, 13-52 AWG)
  • Cross section up to 150 mm²

Insulation material:

  • Natural silk (52)
  • Polyamide yarn (Nylon©) (63)
  • Polyester foil (Mylar©) (25)
  • Polyethylenenapthalat (PEN),(Teonex©)
  • Polyimide foil (27) (Kapton©)