Laserfiche WebLink
111.2. Momentary Outage Causes <br />The ability to track momentary outages can be difficult or unavailable on some <br />systems, but due to the hazard they pose for electronic equipment, it is important to <br />track and analyze the causes of momentary outages. This section evaluates the <br />common causes of momentary outages for your utility, region, and size class as well as <br />common causes for all utilities that use the eReliability Tracker. Please note that only <br />outages lasting less than five minutes are classified as momentary, as defined by IEEE <br />1366. In Figures 12-14, for each utility, the number of occurrences for each cause is <br />divided by that utility's customer count (in thousands) to create an occurrence rate that <br />can be compared across different utility sizes. <br />Figure 12. Top five causes of momentary outages for all utilities that use the <br />eReliability Tracker <br />1.2 <br />0 1.0 <br />0 <br />0 <br />L 0.8 <br />U1 <br />a <br />N 0.6 <br />V <br />C <br />N <br />0.4 <br />u <br />u <br />O <br />0.2 <br />0.0 <br />Equipment Replacement Utility Maintenance and Repairs Other - Vegetation Non -Payment Vegetation <br />Outage Cause Types <br />Figure 13. Top five causes of momentary outages for your utility <br />0.05 <br />0 <br />0 0.04 <br />L <br />a 0.03 <br />v <br />V <br />C <br />U1 0.02 <br />U <br />V <br />0 0.01 <br />0.00 1 0.00 0.00 0.00 0.00 0.00 <br />None None None None None <br />Outage Cause Types <br />19 <br />201 <br />