IBA PQU-S, Руководство пользователя, Страница: 9 / 116

Manual
Issue 1.3
9
2 Introduction
ibaPQU-S is a modular system to measure power quality parameters using ibaPQU-S
as central unit.
ibaPQU-S measures raw values such as current and voltage in sync with the grid and
calculates the characteristic values according to IEC 61000-4-30 Ed. 3 Class A. Charac-
teristic values include:

Frequency

RMS and maximum value, rectified value, form factor, crest factor

FFT (harmonics, interharmonics up to 50th order)

THD (Total Harmonic Distorsion)

Phase values (U/I phase angle to the reference voltage)

Power values (active power, apparent power, reactiv
e power, cos θ, electric energy,
power factor for individual lines and for the total grid)

Symmetrical components (positive, negative and zero sequence component) and
supply voltage unbalance

Flicker (according to IEC 61000-4-15, short-term, long-term)

Event detection (voltage dip, voltage swell, voltage cutoff, rapid voltage changes,
mains signalling voltage)
In addition, ibaPQU-S calculated the following values:

Commutation notches

Flicker for currents

Symmetrical components (positive, negative and zero sequence component) and
supply voltage unbalance
ibaPQU-S is suitable for the following grids:

DC

50 Hz

60 Hz

user-defined grids ranging between 10 Hz and 80 Hz frequency