HT instruments PQA820 - Manual (Page 6)

PQA820
EN – 5
2. GENERAL DESCRIPTION
2.1. FOREWORD
PQA820 allows for a totally new approach to electric measurements. Using computer-
aided instruments allows analyzing a huge amount of data with a simplicity and speed
impossible to obtain with any other system.
2.2. INSTRUMENT
FUNCTIONS
The instrument allows performing the following functions:
 A real-time display (with connection to PC and/or iOS/Android devices) of the values
of the electric quantities of a single-phase or three-phase system with or without neutral
and of the harmonic analysis of voltages and currents
 Recording (through the appropriate setting) over time of the values of voltages,
voltage unbalance, voltage anomalies (sags, swells) with a resolution of 10ms,
currents, of the values of the relevant harmonics, of the values of active, reactive and
apparent powers, of power factors and cos
, of the values of active and reactive
energies, where recording is intended as saving in the instrument's memory the values
taken by the electrical quantities over time.
CAUTION
These terms will be used several times in this manual. We therefore invite
you to try and immediately focus the distinctions between the definitions
listed above.