Event timing and shape analysis of vibration bursts from power circuit breakers

oninvasive vibmtion diagnostic techniques plf? implemented to assess the mechanical condition of power cizcuit breakers. A diagnostic system, the Prototype Commercial PoltaMe Diagnostic System (E”DS) has been developed Hardware of the €“DS includes a poltable computer, and a data acquisition unit and computer communication cruds. Signal pmcessing techniques include the discrete energy sQCstics envelope, short-time pwer spectnmq timing extraction algorithm and chi-square based shape test Decision-making is canied out via a voter pmgiam, to which individual resulb fmm the timing and shape analysis pm~grams am passed. Statistical and empirical htsholds have been established, that classify the cinxit breaker as Wig in Normal-Transitional- Abnormal (Green-Yellow-Red) condition.