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Momentary Outage Causes <br /> The ability to track momentary outages can be difficult or unavailable on some systems, but due to the <br /> hazard they pose for electronic equipment, it is important to track and analyze momentary causes. In this <br /> section, we evaluate common causes of momentary outages for your utility, region and customer size <br /> class as well as 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 1366. <br /> Figure 11 <br /> Top five customer-weighted occurrence rates for common causes of momentary outages for all <br /> utilities that use the eReliability Tracker Service 2 <br /> 0.25 - <br /> co 02 - 0.1914 <br /> is <br /> 0.15 - <br /> U <br /> 0.1 - <br /> 0.0578 <br /> 0 0.0522 <br /> p 0.05 - 0.0383 0.038 <br /> 0 <br /> Unknown Utility Maintenance and Customer Service Equipment Replacement Equipment <br /> Repairs <br /> Outage Cause Types <br /> Figure 12 <br /> Top five customer-weighted causes of momentary outages for your utility2,3 <br /> 0.2 - 0.174 <br /> m 0.15 - <br /> m 0.1 - 0.087 <br /> U <br /> 8 0.05 - <br /> 0 0 0 <br /> 0 <br /> Unknown/Other Unknown None None None <br /> Outage Cause Types <br /> 3 <br /> If your utility has less than eight momentary outages recorded in the eReliability Tracker,this graph will be blank. <br /> 14 <br /> 217 <br />