9 Settings
Installation and Operating Manual for RPI M15A M20A Solar Inverter V1.0 2016-03-18
138
9.28 FRT - Fault ride through
The parameters are set according to the require-
ments of the selected country. A change to the
parameter settings may result in the approval be-
ing lost. This setting should only be changed after
consultation with Delta customer service.
Overview
With this function you can determine how the inverter behaves in
the event of temporary voltage dips on the grid.
To change this setting you will need a special
password which you can obtain from Delta cus-
tomer service. You will find the contact data on
the last page of this document.
Path to the menu item
Main Menu
>
Settings
>
FRT
Setting options
V
drop
U1
Dead
band Vl
Dead
band Vh
100%
t
0
t
1
t
3
t
2
Time
Stay connected
Disconnect from grid
U
grid
/U
n
Fig. 9.2:
Operating behaviour for FRT (Fault Ride Through)
t
o
: The time at which the fault occurs.
Parameter
Description / Setting range
Dead band Vh
The upper limit of the voltage range in
which the function is
not
active.
The percentage value refers to the nomi-
nal voltage.
Setting range:
0 .. +20 %
Parameter
Description / Setting range
Dead band Vl
The lower limit of the voltage range in
which the function is not active.
The percentage value refers to the nomi-
nal voltage.
Setting range:
0 .. -20 %
K factor
Spike factor
Setting range:
0 .. 10.0 %
Vdrop
Voltage drop in percent.
Setting range:
0 .. 90 %
t1
Setting range:
0 .. 5.00 s
U1
Setting range:
20 .. 90 %
t2
Time t2.
Setting range:
0 .. 5.00 s
t3
Setting range:
0 ... 5.00 s
Mode
Setting range:
ON
: The function is switched on.
OFF
: The function is switched off.
