8.2 Detailed Specifications of Measurement Parameters
149
8
Time Series Calculations
Time series calculation
values
MAX, MIN and AVE values
More negative peak voltage (-) and peak current (-)
values are
handled as minima, and less negative values are handled as maxima
Time series calculation
method
MAX, MIN and AVE values are calculated within the specified interval
(but no AVE voltage (½) value is calculated)
Time Series Recording Measurement Parameters and Averaging
Measurement Parameter
Time
Series
Recording
AVE Value Calculation Method
CHs 1, 2, 3 sum/ave
Voltage(1/2) Urms1/2
O
− −
Voltage Urms
O
Calculated average
Calculated average of the average
r
esult for each channel
Peak voltage(±) Upeak
O
Signed calculated
average
−
Current Irms
O
Calculated average
Calculated average of the average
r
esult for each channel
Peak current (±) Ipeak
O
Signed calculated
average
−
Frequency f
O
Calculated average
−
Active power P
O
−
Calculated average of sum values
Reactive power Q
O
−
Calculated average of sum values
Apparent power S
O
−
Calculated average of sum values
Power factor/displace-
ment power factor
PF/DPF
O
−
Calculated average of sum values
(per Note)
Voltage total harmonic
distortion
THD-F
O
Calculated average
−
Voltage unbalance
factor
Uunb
O
−
Calculated average
Note. For power factor, the AVE value is the average centered around ±1, MAX value is the worst-
case value when +0 is the maximum, and MIN value is the worst-case value centered around -0
.
Measurement Parameter
Time
Series
Recording
Active power value WP+/WP-
O
Reactive power value WQLAG/WQLEAD
O
Active power demand Pdem+/Pdem-
O
Reactive power demand QdemLAG/QdemLEAD
O
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