User's Manual

PQ Log
Users Manual
56
Appendix A
Abbreviations, Symbols
General
Total For all three phases, A or L1, B or L2, C or L3
Min General: minimum value
Max General: maximum value
Mean Average value
|xxx| Absolute value of a parameter, always positive
A or L1, B or
L2, C or L3
Phases A or L1, B or L2, C or L3
Voltage Parameters
V Voltage
V
n
Nominal voltage
V h1 Voltage, fundamental component
V h1 – V h50 Voltage harmonics with order 2 - 50
V delta rms A or L1 Voltage RMS value between A or L1 and B or L2
V delta rms B or L2 Voltage rms value between B or L2 and C or L3
V delta rms C or L3 Voltage rms value between C or L3 and A or L1
V
min
Smallest voltage rms value in the measuring
interval based on the averaging time set in the
job (1/2-cycle up to 5 s)
V
max
Highest voltage rms value in the measurement
interval based on the averaging time set in the job
(1/2-cycle up to 5 s)
V
act
at I
max
Voltage at the time Imax occurred
V
min act
Minimum voltage based on 10 ms rms values
V
max act
Maximum voltage based on 10 ms rms values
Flicker Pst Flicker value short term
Flicker Plt Flicker value long term
THD V Total harmonic distortion, harmonic contents of
voltage
Current Parameters
I Current
I h1 Current, fundamental component
I h1 – I h50 Current harmonics with order 2-50
I
max
Highest current rms value in the measurement
interval based on the averaging time set in the job