Fronius GEN24 Operating Instructions Manual page 62

Q Absolute - Constant Reactive Power
Reactive power specification defined by a constant value [Var]. The function is
limited by the maximum apparent power and by "Cos φ Minimum"
Parameter
"Q - Reactive
Power (Var)"
"Time Constant
(τ)"
Q Relative - Constant Reactive Power
Reactive power specification defined by a constant value in percent [%], related
62
Range of val- Description
ues
-200,000 Var - Reactive power setting value in [Var] (set
200,000 Var value)
0.01 s ‑ 60 s
Time constant (1 Tau) in seconds [s].
Whenever the set value is changed, this
new set value is not triggered abruptly, but
smoothly in accordance with a PT1 re-
sponse. The time constant describes how
quickly the new set value is reached. (After
three time constants the final value 95 %
is reached)