Transformer insulation components fabricated by The Gund Company include everything from tap changer boards for large power transformers toıwinding comb insulation for dry type transformers. The Gund Company manufactures a complete line of electrical insulating components for transformer applications. Barrel Wound Dry Type

Our years of application experience coupled with our materials knowledge allow The Gund Company to serve OEM's and repair companies with a world-class level of service. Our application experience includes the following types of transformers:

  • Electronic Transformers
  • Low and Medium Voltage Oil Filled Distribution Transformers
  • Low and Medium Voltage Dry Type Distribution Transformers
  • Medium and Large Voltage Oil Filled Power Transformers


Insulating Components

  • Core Insulation
  • Layer Insulation
  • Spacer Sticks
  • Radial Spacers
  • Lead Termination Insulation
  • Insulating Tapes
  • Barriers
  • Terminal Boards
  • Tap Changer Parts
  • Pressure Plates
  • Pressure Collars
  • Insulating Nuts
  • Insulating Bolts
  • Bolt Insulation
  • Coil Supports
  • Cable & Lead Clamps
  • Insulating Angles
  • Insulating Channels
  • Stand-off Insulators
  • Fuse Boards
  • Bus Supports
  • Winding Combs
  • Fuse Body Insulation
  • Lead Conduit Tubes
  • Micarta Boards
  • Pressboard Parts
  • Tap Changer Tubes

If you know the part required, please complete a quote request form for a complete quotation. Typically, a drawing will be required. If you do not have a drawing, we can send you a sample drawing for you to complete or you can send us samples to duplicate.

Insulating Materials

Rigid Laminates

  • Glass Polyester Laminate, NEMA Grades GPO-1, GPO-2, & GPO-3
  • High Temperature Glass PolyesterıHST-II &ıSG-200
  • Canvas Phenolic NEMAıGrades C &ıCE
  • Paper Phenolic Low Power Factor Laminate
  • Arboron Paper Phenolic Laminate
  • Glass Silicone NEMA Grade G-7
  • Glass Melamine NEMAıGrades G-5 andıG-9
  • Glass Epoxy NEMAıGrades G-10,ıFR4, andıG-11
  • Glass Polyimide Grade G-30
  • Vulcanized Fibre Materials
  • Durex Hardboard
  • Kraft Pressboard Materials
  • Nomex Pressboard Materials
  • Dehonit Compressed Wood Laminates

Flexible Laminates

  • Nomex 410 Aramid Paper
  • Epoxy Coated Nomex Aramid Paper
  • Epoxy Coated Fibreglass - Acme 517
  • Mylar & Melinex Polyester Film
  • Dacron / Mylar / Dacron 70
  • Dacron / Mylar / Dacron 100
  • Nomex / Mylar / Nomex
  • CopacoıElectric InsulatingıPaper
  • Copaco 125 Super Stretch Electrical Insulating Paper
  • Rag / Mylar & Rag / Mylar / Rag
  • Vulcanized Fibre Materials
  • Kapton Film
  • Insulating Tapes

In transformer repair situations, the most commonly required spare parts include insulation components. TGC can supply individual components or complete repair kits for transformer repair. As an independent source for insulation components, TGC has the ability to supply insulation materials for all makes, models, and manufacturers of transformers.

The Gund Company has created our Transformer Insulation Products Handbook detailing the application of insulation in transformer equipment. It contains application information, material options, and technical data sheets on each material.ı