Ht-instruments PQA824 Manual de usuario descargar pdf (Pagina 107)

PQA400 - PQA823 - PQA824

EN - 106

This screen (Fig. 174) displays, with graphic and numeric indications, the phase delays

expressed in degrees [°] between voltage V12 and current I1. To correctly evaluate this

diagram, it must be remembered that, under purely resistive loads, the angle between the

Delta voltage and the phase current is +30°.

Fig. 174: Phase 1 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 phase 2 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. 175) displays, with graphic and numeric indications, the phase delays,

expressed in degrees [°], between voltage V2 and current I2, 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. 175: Phase 2 vector diagram in three-phase 4-wire 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 phase 3 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).

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Ht-instruments PQA824 Manual de usuario Pagina 107