12.3 Detailed Measurement Specifications
185
Chapter 12 Specifications
12
Apparent power (S, PF/Q/S calculation selection: fundamental calculations)
This apparent power S is defined as the fundamental wave apparent power.
Measurement
method
Calculated from the fundamental wave active power and the funda-
mental wave reactive power.
See: "Apparent power" (p. 203)
Measurement
range
Combination of voltage × current range
See: 12.6, "Range Configuration and Accuracy by Clamp Sensor"
(p. 210)
Measurement
accuracy
±1 dgt. relative to calculations from measured values.
Power factor (PF, PF/Q/S calculation selection: RMS value calculation)
Measurement
method
Calculated from the apparent power and active power.
See: "Power factor, Displacement power factor" (p. 203)
Measurement
range
Lag : 0.0000 to 1.0000
Lead: 0.0000 to 1.0000
Measurement
accuracy
±1 dgt. relative to calculations from measured values.
Lag/Lead
display
Uses the sign of reactive power Q (fundamental wave reactive
power).
Positive : Lag
Negative : Lead
Output data
For SD memory card and internal memory output data, the polarity
indicates lag/lead.
Lag : Positive
Lead: Negative
Power factor (PF, PF/Q/S calculation selection: fundamental calculations)
This power factor PF is defined as the displacement power factor DPF.
Measurement
method
Calculated from the fundamental wave active power and the funda-
mental wave reactive power.
See: "Power factor, Displacement power factor" (p. 203)
Measurement
range
Lag : 0.0000 to 1.0000
Lead: 0.0000 to 1.0000
Measurement
accuracy
±1 dgt. relative to calculations from measured values
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