Fronius Primo GEN24, Operating Instructions Manual

Page: 50 / 76

Power curve at overfrequency with hysteresis.
Underfrequency
Parameter Range of val-
ues Description Availability
"Calculation
Mode Underfre-
quency" P
max
=
P
m
-P
m
(k*df)
Indicates the reference
power for calculating the
power limit in the event of
underfrequency.
Reference power
- P
m
→ Momentary
power when the fre-
quency limit value is
exceeded.
- P
n
→ Nominal power
of the device.
P
max
=
P
n
-P
n
(k*df)
P
max
=
P
m
-P
n
(k*df)
"Activation
Threshold Un-
derfrequency" 45
‑
66 [Hz] Frequency limit value
above which the power in-
crease takes place.
"Gradient Un-
derfrequency" 0
‑
100 [%/Hz] Gradient by which the ef-
fective power increases.
Example - conversion from
static to gradient:
Static s = 5 % → Gradient k
= 1/(0.05*50Hz) =
40 %/Hz
"Stop Fre-
quency - Under-
frequency" 45
‑
66 [Hz] Frequency value at which
the power increase ends.
50