scope:

This guide provides maintenance testing and failure analysis guidance for form-wound, squirrel cage, induction machinery rated up to 15 kV. The guide addresses the following machine systems:

- Stator (winding and wore)

- Rotor (winding and core)

- Vibration and noise

- Bearings and shafts

- Structure, frame

- Ventilation

- Accessories

Purpose

This document is intended for the following purposes:

- To provide guidance concerning the appropriateness of various maintenance tests and interpreting the results of those tests with respect to failure analysis and to routine predictive maintenance activities

- To provide a methodology by which the most probable cause of any particular machine failure may be determined

- To encourage the establishment of routine and uniform data collection so valuable facts of the failure are not destroyed

- To facilitate cooperative efforts by users and manufacturers during failure analysis