Reliability

Today we return our attention to updating the failure rate tables of IEEE 493 Design of Reliable Industrial and Commercial Power Systems; collaborating with front-line experts to gather data design engineers use for determining utility-customer service switchgear configuration.  Tables 10-35 have not been updated since 1975; well before IEEE 1366 (a standard for merchant utilities). We are formulating data gathering methodologies for assembling a statistically significant data set.