46 | Description of the menu
Power Quality Controller – PQC | Operating Manual | FRAKO
6.3.1 System parameters
Main menu > Parametrization > System parameters
Setting the specific parameters for the network to be controlled:
System nominal voltage
Setting range: 60 V – 60 kV
System nominal frequency
50 Hz, 60 Hz, Auto
Automatic mode: The PQC determines the network frequency
automatically. In the case of networks with heavy voltage
harmonics or commutation notches, it can be necessary to
set the network nominal frequency manually to the appropri-
ate value.
Voltage transformer
range 1 to 300, transformer ratio =
V
primary
V
secondary
Current transformer
range 1 to 7000, transformer ratio =
I
primary
I
secondary
e.g. for a current transformer 500 A / 5 A
transformer ratio K =
I
primary
I
secondary
= 500 A
5 A = 100
6.3.2 PFC Equip. parameter
Main menu > Parametrization > PFC Equip. parameter
Setting the specific parameters for the power factor cor-
rection system:
Choke factor
Detuning of the power factor
correction system (A value must
be set for correct computation of
overcurrent. If the system is not detuned,
0 % must be entered.)
6.3.3 Control parameters
Main menu > Parametrization > Control parameters
