MI 2892 Power Master
Operating the instrument
55
Triggers Waveform snapshot.
Returns to the “MEASUREMENTS” submenu.
3.10.2
Unbalance diagram
Unbalance diagram represents current and voltage unbalance of the measuring system. Unbalance
arises when RMS values or phase angles between consecutive phases are not equal. Diagram is shown
on figure below.
Figure 3.37: Unbalance diagram screen
Table 3.36: Instrument screen symbols and abbreviations
U0
I0
Zero sequence voltage component U
0
Zero sequence current component I
0
U+
I+
Positive sequence voltage component U
+
Positive sequence current component I
+
U-
I-
Negative sequence voltage component U
-
Negative sequence current component I
-
u-
i-
Negative sequence voltage ratio u
-
Negative sequence current ratio i
-
u0
i0
Zero sequence voltage ratio u
0
Zero sequence current ratio i
0
