12.4 Functional Specifications
195
Chapter 12 Specifications
12
Maximum/minimum/average value processing methods
Measurement parameter
Average value
Maximum
value
Minimum
value
Blank: Arithmetic mean
Blank:
Simple max.
value
Blank:
Simple mini.
value
Voltage RMS
value
U
Curren
t RMS
va
lue
I
Freque
ncy f
Voltage waveform
peak
Upeak
No average value
Current waveform
peak
Ipeak
Active power P
Simple maximum and mini-
mum with polarity
Apparent power S
Reactive power Q Signed simple average
Lag (positive data polarity)/
Lea
d (negat
ive data polar-
ity); simple maximum and
minimum
Power factor PF
Calculated from Pavg
and Savg.
Maximum and minimum
absolute
valu
e
Signed data based on Lag
(p
ositive)/
Lead (negative)
Displacement
p
o
wer factor
DPF
Calculated from P(1)avg
and S(1)avg.
Maximum and minimum
absolute valu
e
Signed data based on Lag
(positive)/
Lead (negative)
Harmonic level
For active power, simple
maximum a
nd minimum with
polarity
Harmonic con-
tent percentage
Nth harmonic average
value / fund
amental wave
average value × 100%
Harmonic phase
angle
Vector average
No average value when
using current-only wiring
.
Simple maximum and mini-
mum with polarity: -180° →
0° → +180°
Total harmonic
disto
r
tion rate
Calculated from Nth har-
monic average value
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