HT instruments PQA824 User Manual

Page 104

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PQA400 - PQA823 - PQA824

EN - 103

This screen (Fig. 168) displays, with graphic and numeric indications, the phase delays
expressed in degrees [°] between:

 Voltage V12 and V23, V23 and V31, V31 and V12.

 Voltage V12 and current I1.

 Voltage V23 and current I2.

 Voltage V31 and current I3.

To correctly evaluate this vector diagram, it must be remembered that, under purely
resistive loads, the angle between the Delta voltage and the phase current is +30°.

Fig. 168: Total vector diagram in three-phase 3-wire system or Aron system

The following keys are active on this page:

 The

F1 key (or the PAG item on the display) advances to the following page of

saved values relative to the voltage vector diagram.

 The

ESC key (or the smart icon on the display) to exit the function and go back

to the “Recording analysis” page (Fig. 143).


This screen (Fig. 169) displays, with graphic and numeric indications, the phase delays,
expressed in degrees [°], between voltage V1 and current I1, so that the inductive or
capacitive nature of the electrical installation may be found out. In detail:

 Positive angle: Inductive load.

 Negative angle: Capacitive load.

Fig. 169: Vector diagram in single-phase system

The following keys are active on this page:

 The

ESC key (or the smart icon on the display) to exit the function and go back

to the “Recording analysis” page (Fig. 143).

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