1968 · 23 citations · 0 references
EngineeringElectrical EngineeringPhysicsElectric MachinesElectromagneticsPower ElectronicsDirect Current MachinesElectric DrivesElectric Motor DrivesElectric MotorsInsulation SystemsElectromagnetic ImpulseExperimental Study DesignHigh-speed Electric MotorsHigh-speed MotorsImpulse AnalysisImpulse TestingOvervoltage TransientsRise Time
High voltage ac motors with ratings from a few hundred kW may, during normal operation, be subjected to steep-fronted impulse voltages which can be hazardous to the turn-to-turn insulation. The rise time of these impulse voltages can be as short as 0.2 microsecond. These problems were discussed by R. M. Sexton in a recent paper <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">1</sup> where further references can be found.