HT instruments PQA820 User Manual
Page 3
PQA820
EN – 2
12.1.
Voltage Anomalies .................................................................................................. 22
12.2.
Voltage and current harmonics ............................................................................... 23
12.2.1.
Limit values for harmonics ......................................................................................... 24
12.2.2.
Causes of the presence of harmonics ........................................................................ 24
12.2.3.
Consequence of the presence of harmonics .............................................................. 25
12.3.
Definitions of power and power factor .................................................................... 26
12.3.1.
Conventions on powers and power factors ................................................................ 27
12.4.
Information on the measuring method .................................................................... 29
12.4.1.
Integration period ....................................................................................................... 29
12.4.2.
Calculation of the power factor ................................................................................... 29
13.
SERVICE ................................................................................................................ 30
13.1.
Warranty conditions ................................................................................................ 30
13.2.
Service .................................................................................................................... 30