122
Power Quality Analyzer PowerPad
®
IV Model 8345
20.2.10 Frequency
This quantity is calculated in accordance with standard IEC 61000-4-30, edition
3.0, § 5.1.1.
The zero crossings method is used. The aggregation’s duration depends on the
instrument’s configuration (10 seconds in Class A mode).
20.2.11 DC Component
Mean of the M samples YL.
20.2.12 Active Power (P)
This quantity is calculated in accordance with standard IEEE 1459, 2010 edition,
§ 3.1.2.3.
Active power, per phase:
With V
L
(n) and I
L
(n) = instantaneous values of the V or I sample having index n
in channel L.
Total active power:
20.2.13 Fundamental Active Power (P
f
)
This quantity is calculated in accordance with standard IEEE 1459, 2010 edition,
§ 3.1.2.4.
Active power of fundamental, per phase:
With V
fL
(n) and I
fL
(n) = instantaneous fundamental voltage and current of the
sample having index n in channel L.
Total active power of fundamental:
NOTE:
These quantities, which are used to calculate other quantities,
are not displayed.
