Abstract
The study of changing properties of generator stator coil insulation on long-time exposure at elevated temperature is an accepted part of insulation development. This aging, however, has usually been done in air, while the windings of modem turbine generators operate in hydrogen atmosphere. Samples of synthetic resin bonded insulation were pyrolyzed in air and hydrogen at 200°C and one atmosphere. The gaseous, liquid, and residual products were analyzed by chromatography and infrared spectroscopy. Heated in air, the gases contained C3, C4, and C5 straight chain hydrocarbons, but the products in hydrogen contained, in addition, cyclohexane. The liquid and residual products indicate the sample pyrolyzed in air degrades by depolymerization and oxidation, while the sample in hydrogen depolymerizes, followed by some degree of hydrogenation.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
