IEEE 434:1973 (R1991)

New IEEE Standard - Superseded.
Classification test methods that may be used to compare insulation systems in use, or proposed for use, in large high-voltage rotating machines are described. Thermal aging, voltage endurance, theremomechanical forces, and electromechanical forces are addressed.

The tests outlined in this guide are applicable to the insulation systems used in coils of generators, motors, and synchronous condensers operating at 6600 V and above.
The purpose of this guide is to describe classification test methods which may be used to compare insulation systems in use, or proposed for use, in large high-voltage rotating machines