Delta RPI M50A_120 User Manual

8 Settings
Installation and Operation Manual for RPI M50A
80
Installation and Operation Manual for RPI M50A
80
8.17 Q (V) - Apparent power versus voltage
Overview
Values have been set based upon country standards. If you modify these values, you will lose certi-
cation. Therefore you should set this function only when requested by country regulations, authori-
ties or your grid operator.
With this function you can set the apparent power as a function of the grid voltage.
This function is available for medium voltage grids only.
(1) Behavior for Curve A (2) Behavior for Curve B
V
1s
V
2s
V
1i
V
2i
264.5 V230.0 V
63%
63%
V
184.0 V
Q
s limit
Q
i limit
Q inductiveQ cpacitive
V
1s
V
2s
V
1i
V
2i
V
264.5 V230.0 V
63%
63%
184.0 V
Q
s limit
Q
i limit
inductive cos φ
Q inductiveQ cpacitive
Operating behavior for curve A
When the grid voltage increases to the lower voltage limit V1s, the inverter starts to feed-in inductive reactive
power. When you set the parameter T inductive, the inverter will wait for this period time for the grid voltage
falling back to a level below V1s before it starts feeding in inductive reactive power. When the grid voltage con-
tinues to increase, the inductive reactive power will be increased according to the ramp dened by the curve. If
the grid voltage exceeds the upper voltage limit V2s, the inductive active power remains at the level dened in
Qs limit.
When the grid voltage falls to the upper voltage limit V1i, the inverter starts to feed-in inductive reactive power.
When you set the parameter T delay, the inverter will wait for this period time for the grid voltage rising back
to a level above V1i before it starts feeding in inductive reactive power. When the grid voltage continues to fall,
the inductive reactive power will be increased according to the ramp dened by the curve. If the grid voltage
exceeds the upper voltage limit V2i, the inductive active power remains at the level dened in Qi limit.
Do not change this setting without prior
consultation with Delta Solar Support.

Delta RPI M50A_120 Specifications

General

Brand	Delta
Model	RPI M50A_120
Category	Inverter
Language	English