MEASURED QUANTITIES:
U .................. Voltage
I .................... Current
P ................... Active Power
Q .................. Reactive Power
S ................... Apparent Power
λ ................... Power Factor
................... Voltage Phase
................... Current Phase
................... Distortion Factor of Voltage
................... Distortion Factor of Current
.................... Active Power of Higher Harmonics
f .................... Frequency
L1xx ............. Phase Sequence (L123 or L132)
ΣP ................ Sum of Active Powers
ΣQ ................ Sum of Reactive Powers
ΣS ................ Sum of Apparent Powers
EP ................ Active Energy
EQ ................ Reactive Energy
ES ................ Apparent Energy
ΣEP .............. Sum of Active Energies
ΣEQ ............. Sum of Reactive Energies
ΣES .............. Sum of Apparent Energies
(CT) .............. Current Transformer
(PT) .............. Voltage Transformer
ratio, r
B/A
....... Measured Transmission Ratio
phase, φ
B/A
.... Measured Phase Error
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