Fundamentals of testing mica epoxy stator coils for high voltage electric generators

There are numerous tests performed on stator coils designed to operate in high voltage electrical generators. There are tests performed to qualify a stator coil design. There are tests that are performed on each production coil at various steps in its production cycle. There are tests performed as a quality check and verification. And there are tests performed on fully assembled generators relative to the stator coils. There are mechanical, electrical, and chemical tests performed on high voltage stator coils. There are also tests performed on the separate materials that go into the fabrication of the stator coils. In addition, there are tests performed on an operational generator at various stages of it´s in service life. This paper describes the tests performed on the basic stator coil relative to many aspects of the coils and relative to many steps during production.