Reliable Generator Insulation

Nomex® for Generator Insulation Helps Extend Equipment Life

From small generators used in wind turbines to very large turbo generators, the use of DuPont™ Nomex® brand papers and Nomex® based laminates for generator insulation helps improve reliability.

Generator insulation is a small but critical component that plays a major role in determining the reliability and service life of a generator.  Choosing Nomex® as generator insulation helps increase reliability, prevent premature failure and extend generator service life.

The outstanding thermal performance, excellent dielectric strength and mechanical toughness of Nomex® are the reasons why it is an ideal choice as generator insulation for all sizes of generators used in a broad range of applications.

Exceptional Thermal Protection

The use of Nomex® for generator insulation can help prevent premature failure and equipment downtime.  That’s because Nomex® does not shrink, embrittle, soften or melt during short-term exposure to temperatures as high as 300°C, and because it maintains good insulating properties continuously at 220°C for 10 years. 

Excellent Dielectric Strength

Nomex® insulation features excellent electrical properties, even when exposed to environmental conditions such as high humidity.

Superior Mechanical Toughness

The excellent mechanical strength and resilience of Nomex® insulation help extend the service life of generators subjected to harsh operating conditions, such as the abrasion caused by thermal expansion and centrifugal forces in standby gas-turbine generators. 

Typical Applications in Generators

Nomex® papers and Nomex® based laminates are used in generators such as:

  • Slot insulation
  • Wedges, midsticks
  • Phase insulation
  • Conductor insulation
  • Coil separators
  • OCT Tape
  • Tubing
  • Pole insulation
  • Turn insulation
  • Main wall insulation

Typical Generator Equipments

Nomex® papers and Nomex® based laminates are used in virtually all types of generators, including:

AC Generators

  • Turbo generators
  • Hydro generators
  • Low voltage generators
  • High voltage generators
  • Wind generators