What materials are used for high-temperature electrical insulation?

High-temperature electrical insulation calls for woven glass epoxy laminates, the highest-performing grades in the Tufnol range, which keep their dielectric strength and resistance to surface tracking at elevated temperatures. They are used in large turbine generators, cryogenic superconducting magnet components and rail fishplate insulation. Check the rated temperature limit for each grade on the Tufnol working temperatures guide.