13.8 Calculation Formula
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Chapter 13 Specifications
-13. Average calculation
Signed average: Signs of values are included in average calculation.
"(AVG)" following a parameter indicates the average result.
*1: PF/DPF average calculation
Addition processing : If the power factor value is negative, it is multiplied by (-)
. If the power factor value is positive, it is multiplied by
(-), and the value 2 is added. The resulting value is integrated.
Averaging processing : The result of addition processing descr
ibed above is divided by the number of added data points. If the result is
less than 1, it is multiplied by (-). If it is greater than or equal to 1, it is multiplied by (-), and the value 2 is added.
*2: Phase average calculation
Uphase average calculation
Uckr and Ucki represent the signed averages for each channel.
Iphase average calculation
Ickr and Icki represent the signe
d averages for each channel.
Pphase average calculation
(Channel averaging processing) : Qharmk and Pharmk represent the signed averages for each channel.
(Sum averaging processing) : Qsumk and Psumk represent the signed averages for each channel.
*3: For content percentage and order 0, signed average.
Average calculation methods
CH1 to CH4 sum/AVG Comment
Freq Signed average -
Same as Freq10s.
Upk Signed average -
Ipk Signed average -
Urms RMS Average results for all channels are av-
eraged.
Irms RMS Average results for all channels are av-
eraged.
Udc Signed average -
Idc Signed average -
P Signed average Average results for all channels are to-
taled.
S Signed average Average results for all channels are to-
taled.
Q Signed average Average results for all channels are to-
taled.
Eff Simple average -
PF/DPF See *1 below. Sum value is calculated using the
formula described in *1 below.
This calculation is used for both PF and DPF.
Uunb RMS -
Same applies to Uunb0.
Iunb RMS - Same applies to Iunb0.
Uharm RMS (See *3 below.) -
Same applies to Uiharm.
Iharm RMS (See *3 below.) - Same applies to Iiharm.
Pharm Signed average Average results for all channels are
totaled.
The content percentage is calculated from the sum value
calculated from the level.
Uphase See *2 below. See *2 below.
Iphase See *2 below. See *2 below.
Pphase See *2 below. See *2 below.
Uthd Calculated from RMS
value of RMS values.
- This calculation is used for both THD-F and THD-R.
Ithd Calculated from RMS
value of RMS values.
- This calculation is used for both THD-F and THD-R.
KF Signed average -
UharmH RMS -
IharmH RMS -
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