ABB PQFM Instruction Manual page 170

For an inductive and non-regenerative load, the current signal should lag the voltage by
a phase shift lower than 90°.
8.6.2.3.2Measurement of the CT in phase L2 and L3
The same operations as those described in the previous paragraph must be repeated
with the phase L2
For a balanced load (which is usually the case in most of the three phase systems), the
phase shift should be approximately the same for all the three phases.
Supply side
Figure 96: Connection of the scopemeter for checking CT in phase L2
170 The PQF-Manager user interface ç Manual Power Quality Filter PQFM
U
I1
Figure 95: Phase shift evaluation between two waveforms
(Figure 96) and phase L3
L1 K L
L2
L3
I k
DT
T
1
(Figure 96
(Figure 97).
K L
K L
I k
I k
X21.1
X21.2
Positive direction
X21.3
X21.4
X21.5
X21.6
X21.7
X21.8
X21.9
Ch1 Ch2
and Figure 97)
Load side
L1 L2 L3
PQF