Varta element backup 6 Operating Manual page 84

12.4.5.3 Setting according to Q(P) characteristic
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Idle power function: Select the
QPX1 QPX2: Enter the set values for QPX1 and QPX2 using the number entry fields. Take the set values from
Figure 4: Q(P) characteristic.
QPY1 QPY2: Enter the set values for QPY1 and QPY2 using the number entry fields. Take the set values from
Figure 4: Q(P) characteristic.
Figure 10: Q(P) characteristic
Meaning
Parameter
Starting point of the Q(P) characteristic on the power axis. The parameter is entered in
QPX1
per cent (%).
Example
Power factor at the start of the Q(P) characteristic. Normally, the power factor is at the
QPY1
start of characteristic 1 (see Figure 4 Q(P) characteristic).
End point of the Q(P) characteristic on the power axis. The parameter is entered in per
QPX2
cent (%).
Example:
Power factor at the end of the Q(P) characteristic. Normally, the power factor is under-
QPY2
excited at the end of characteristic 0.90 (see Figure 4 Q(P) characteristic).
Table 1: Setting according to Q(P) characteristic
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 (%).
82
Q(P) characteristic
: QXP1 = 50 à The characteristic begins at 50% of the nominal power.
QPX2 = 90 à The characteristic ends at 90 % of the nominal power.
in the drop-down list.
1 Current active power in %
2 under-excited
3 over-excited