Fluke 1760 [58/110] Apparent power

Fluke 1760 [58/110] Apparent power
1760
Users Manual
3-18
321 LLLsum
PPPP ++=
Apparent power
Apparent power
S
is calculated by multiplying rms values of voltage and current of the
given aggregation.
IUS =
The 3-phase apparent power sum is calculated as
321 LLLsum
SSSS ++=
Reactive power
The reactive power
tot
Q is calculated by
22
PSQ
tot
=
tot
Q always has a positive sign.
The 3-phase total reactive power sum is calculated as
321 LtotLtotLtotsumtot
QQQQ ++=
Note
The reactive power components
h
Q and
d
Q are not calculated with these
aggregations.
Power factor
The power factor is calculated as
S
P
PF =
The sign of the power factor is an indication of the power flow direction (motor /
generator characteristic of the load).
Events and Flicker
Voltage Events as per EN 50160 or as per IEC 61000-4-30
Voltage events are detected based on half cycle rms values (as per EN 50160) or on full
cycle rms values updated every half cycle (as per IEC 61000-4-30). As a default, the
phase-neutral voltages are monitored. If the opton Events, Flicker, and Harmonics of
U12.... is activated in the “Hardware Settings” dialog in PQ Analyze, the voltage events
of the phase-to-phase voltages U12, U23, U31 are recorded.
Flicker
Flicker is measured according to the methods described by the standard IEC 61000-4-
15:2003-02 edition 1.1. As a default Flicker is calculated on the basis of the phase

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