Division 12
United Kingdom
With the UUT shut down and in Off, set the meter to begin accumulating true power values at an interval of less than or equal to one reading per second. Accumulate power values for five additional minutes and record the average (arithmetic mean) value observed during that five minute periodf1.
Annotations
Footnotes
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Laboratory-grade, full-function meters can integrate values over time and report the average value automatically. Other meters would require the user to capture a series of changing values every 5 seconds for a five-minute period and then compute the average manually.