3 Operating the instrument
47
symU-
symI-
Negative sequence voltage ratio u
-
Negative sequence current ratio i
-
symU+
symI-
Zero sequence voltage ratio u
0
Zero sequence current ratio i
0
Indicate current and voltage scaling. Value represents current or voltage
value at the top of the graph (top horizontal line).
Table 3.44: Keys function
Waveform snapshoot:
•
Hold measurement on display
•
Save held measurement into memory
Toggle u
-
/u
0
voltages and select voltage for scaling (with
cursors)
Toggle i
-
/i
0
currents and select currents for scaling (with
cursors)
Switch to phase diagram
Switch to symmetry diagram
Scale displayed diagram by amplitude.
Back to the “MAIN MENU” menu.
3.10 Recorder
PowerQ4 has ability to record measurement data in the background. In RECORDER
menu user can customize recorder parameters in order to meet his criteria about size,
duration, and the number of signals for the recording campaign. By entering
“RECORDER” menu, following screen is shown:
Figure 3.34: Basic recorder setup screen
