Introduction to IEEE 1776(2008): Recommended Practice for Thermal Evaluation of Unsealed or Sealed Insulation Systems for AC Electric Machinery Employing Form-wound Pre-Insulated Stator Coils for machine Rated 15000 V and Below


The purpose of this eLearning presentation is to increase your knowledge of the sample construction procedures and test program used to evaluate form-wound pre-insulated insulation systems.  The knowledge you gain from this webinar will help you make better, more informed decisions regarding the testing of these types of systems, and will help you support your customers as they move from the design stage to production.


Course topics

  • Construction of the test models
  • Environmental conditions that comprise the test exposures
  • Diagnostic tests conducted on the test models
  • Evaluation of test data and determination of temperature classification for the system
  • Comparison of IEEE requirements to those in UL 1446


  • Describe the Scope of IEEE 1776
  • Define form-wound coil; sealed and unsealed insulation systems; formette; and test model
  • Describe the construction of the test model
  • Identify the exposures utilized in the test program
  • Describe the diagnostic testing
  • Explain how to calculate the temperature rating of a new system
  • Compare and contrast sample construction requirements; test methodology; determination of temperature classification; and system modification, between IEEE 1776 and UL 1446

Target Audience

  • Producers of materials used to construct insulation systems
  • Manufacturers of high horsepower motors, large industrial generators, and wind turbine generators
  • Manufacturers of motors and transformers that currently utilized insulation systems Recognized in accordance with UL 1446
Click here for terms and conditions...


Time Requirement


Web-Based 30 minutes $59.00

UL and the UL logo are trademarks of UL LLC © 2019.