9 Settings
Installation and Operating Manual for RPI M15A M20A Solar Inverter V1.0 2016-03-18
134
9.27 Q (U) – Reactive power by means of
voltage
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
Using this function, you can determine how much reactive power
is fed into the grid as a function of grid voltage.
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
>
Active / Reactive Power Control
>
Reactive Power Control
>
Q (U)
Setting options
V
1s
V
2s
V
1i
V
2i
V
264.5 V
230.0 V
63%
63%
184.0 V
Q
s limit
Q
i limit
Q
inductive
Q
capacitive
Case 1: Grid voltage > Nominal voltage
When the grid voltage rises above the lower voltage limit
V1s
, the
inverter starts to supply inductive reactive power.
If the
Delay Time
is greater than 0, the inverter will wait for this
time to allow the grid voltage to fall below
V1s
again before it
supplies capacitive reactive power.
If the grid voltage continues to rise, the inductive reactive power
will rise following the ramp defined by the characteristic diagram.
If the grid voltage exceeds the upper voltage limit
V2s
, the induc-
tive reactive power remains at the level defined in
Qs Limit
.
Case 2: Grid voltage < Nominal voltage
If the grid voltage falls below the upper voltage limit
V1i
, the
inverter starts to supply capacitive reactive power.
If the
Delay Time
is greater than 0, the inverter will wait for this
time to allow the grid voltage to rise above
V1i
again before it
supplies capacitive reactive power.
If the grid voltage continues to rise, the capacitive reactive power
will rise following the ramp defined by the characteristic diagram.
If the grid voltage falls below the lower voltage limit
V2i
, the
capacitive reactive power remains at the level defined in
Qi Limit
.
Parameter
Description / Setting range
V1s
The lower voltage limit for supplying induc-
tive reactive power.
Setting range:
230.0 ... 264.5 V
V2s
The upper voltage limit for supplying
inductive reactive power.
Setting range:
230.0 ... 264.5 V
Qs limit
The limiting value for inductive apparent
power. The value is set as a percentage of
the nominal apparent power S
n
. This value
is linked to the parameter
V2s
.
Setting range:
0 ... ind 63 %
V1i
The upper voltage limit for supplying
capacitive reactive power.
Setting range:
184.0 ... 230.0 V
V2i
The lower voltage limit for supplying
capacitive reactive power.
Setting range:
184.0 ... 230.0 V
Qi limit
The limiting value for inductive apparent
power. The value is set as a percentage of
the nominal apparent power S
n
. This value
is linked to the parameter
V2i
.
Setting range:
0 ... kap 63 %
Delay Time
Delay time before reactive power is sup-
plied.
Setting range:
0 ... 120.00 s
Lock-in Power
The upper limit of the active power range
in which the function is active. The param-
eter is specified as a percentage of the
rated power.
Setting range:
10 ... 100 %