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 bedetermined-- 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
Abstract
Revision Standard - Active.This guide describes field test methods that assure that current transformers are connected properly, are of marked ratio and polarity, and after having been in service for a period of time.