Frt (Fault Ride Through); Q(V) - Delta M42U Operation And Installation Manual

4.3.9 FRT (Fault ride through)

Some area requests that inverter should keep connected to grid when grid
voltage drops suddenly in few seconds. In these areas, users can enable FRT
function and adjust the parameters to meet the requirement.
General Settings
Install Settings
Active/Reactive Pwr
► FRT
U
100%
Umin
U1
Udrop
Q
s limit
Figure 4-31: Q(V) parameter
ENT
Adj. would affect
energy production.
Password:
EXIT
Figure 4-32: FRT screens
U
grid/ nom
Stay connected
Disconnect from grid
t1
0
Fault occurrence
Figure 4-33: FRT Parameter
V
V
2s
V
Q
1s
i limit
V
1i
V
2i
ENT
Warning:
＊＊＊＊
EXIT
EXIT
69
Commissioning
Q
► Mode
Dead Band
Vdrop
t1
► U1
t3
K factor
t3
time
OFF
-10%
0%
0.30s
20%
3.00s
2.0