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What does SAIFI stand for?

What does SAIFI mean? This page is about the various possible meanings of the acronym, abbreviation, shorthand or slang term: SAIFI.

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System Average Interruption Frequency Index

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What does SAIFI mean?

The System Average Interruption Frequency Index is commonly used as a reliability indicator by electric power utilities. SAIFI is the average number of interruptions that a customer would experience, and is calculated as where is the failure rate, is the number of customers for location and is the total number of customers served. In other words, SAIFI is measured in units of interruptions per customer. It is usually measured over the course of a year, and according to IEEE Standard 1366-1998 the median value for North American utilities is approximately 1.10 interruptions per customer.

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"SAIFI." Abbreviations.com. STANDS4 LLC, 2017. Web. 21 Nov. 2017. <http://www.abbreviations.com/SAIFI>.


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