Date Code 20001006 Standard Event Reports, Sag/Swell/Interruption Report, and SER
SEL-351 Instruction Manual
12-33
Figure 12.4: Derivation of Phasor RMS Current Values From Event Report Current Values
In Figure 12.4, note that two rows of current data from the event report in Figure 12.2, 1/4 cycle
apart, can be used to calculate phasor RMS current values. In Figure 12.4, at the present sample,
the phasor RMS current value is:
IA = 2749 A ∠-30.0°
The present sample (IA = 2380 A) is a real RMS current value that relates to the phasor RMS
current value:
2749 A * cos(-30.0°) = 2380 A
Courtesy of NationalSwitchgear.com
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