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Installation and Operation Manual for Inverter RPI M50A_12s V1 EU EN 2017-03-09
8 Settings
8.5.7 Q (V) – Regulating reactive power via volt-
age
These parameters are set according to the
requirements of the selected country. Changing
these parameter settings can invalidate the type
approval of the unit. Change this setting only after
consultation with Delta customer service.
Overview
This function allows you to regulate the reactive power via the
voltage.
This function is only available for medium-voltage grids.
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 drops below the lower voltage limit
V1s
the
inverter begins feeding inductive reactive power.
If the
Delay time
is greater than 0 (zero), the inverter waits for
the time specified here to see if the grid voltage falls below
V1s
again, before feeding capacitive reactive power.
When the grid voltage increases again, the inductive reactive
power is increased according to the ramp specified by the char-
acteristic curve.
When the grid voltage exceeds the upper voltage limit
V2s
the inductive reactive power remains at the level specified in
Qs Limit
.
Case 2: Grid voltage < nominal voltage
When the grid voltage drops below the upper voltage limit
V1i
the inverter begins feeding capacitive reactive power.
If the
Delay time
is greater than 0 (zero), the inverter waits for
the time specified here to see if the grid voltage rises above
V1i
again, before feeding capacitive reactive power.
When the grid voltage increases again, the capacitive reactive
power is increased according to the ramp specified by the char-
acteristic curve.
When the grid voltage drops below the lower voltage limit
V2i
the capacitive reactive power remains at the level specified in
Qi Limit
.
