83
12.4.6
Setting according to Q(U) characteristic
•
Select the
Q(U) characteristic in the drop-down list.
QUX1 to QUX4:
Enter the set values for QUX1 to QUX4 using the number entry fields. Take the set values from
Figure 4: Q(P) characteristic.
QUY1 to QUY4:
Enter the set values for QUY1 to QUY4 using the number entry fields. Take the set values from the
two following tables.
i
In setting the parameters, the following condition must be complied with:
QUX1
≤
QUX2 < QUX3
≤
QUX4
Time delay:
Enter the time in seconds after which the idle power is to be reset.
Minimum power:
Enter the minimum power up to which the idle current is not regulated in per cent (%).
Parameter
Meaning
QUX1
Start of the first section of the Q(U) characteristic on the voltage axis. The parameter
is entered in V.
Example: The characteristic begins at 190 V
à
QUX1 has the value 190.
QUY1
Power factor at the start of the Q(U) characteristic. If the mains voltage comes under
the value defined as QUX1, the characteristic is limited to the value set in QUY1 (see
Figure 4 Q(P) characteristic).
QUX2
End of the first section of the Q(U) characteristic on the voltage axis. The parameter is
entered in V.
Example: The first section of the characteristic ends at 220 V
à
QUX2 has the value
220.
QUY2
Power factor at the end of the first section of the Q(U) characteristic. If the mains
voltage exceeds the value defined as QUX2, the characteristic is limited to the value
set in QUY2.
Normally, the parameter is set to 0, i.e. no idle power is produced (see Figure 4 Q(P)
characteristic).
QUX3
Start of the second section of the Q(U) characteristic on the voltage axis. The
parameter is entered in V.
Example: The characteristic begins at 235 V
à
QUX3 has the value 235.
QUY3
Power factor at the start of the Q(U) characteristic. If the mains voltage comes under
the value defined as QUX3, the characteristic is limited to the value set in QUY3.
Normally, the parameter is set to 0, i.e. no idle power is produced (see Figure 4 Q(P)
characteristic).
QUX4
End of the second section of the Q(U) characteristic on the voltage axis. The parameter
is entered in V.
Example: The second section of the characteristic ends at 240 V
à
QUX4 has the value
240.
QUY4
Power factor at the end of the first section of the Q(U) characteristic. If the mains
voltage exceeds the value defined as QUX4, the characteristic is limited to the value
set in QUY4 (see Figure 4 Q(P) characteristic).
Table 2: Setting according to Q(U) characteristic
