Rotating electrical machines. Functional evaluation of insulation systems. Test procedures for form-wound windings. Evaluation of thermomechanical endurance of insulation systems Rotating electric machines, Electric machines, Electrical equipment, Electrical insulation, Electrical insulating materials, Electrical insulation devices, Endurance testing, Ageing (materials), Ageing tests, Heat ageing tests, Thermal testing, Thermal-cycling tests, Windings, Performance, Performance testing, Sampling equipment