Service Menu - Steca Grid 8000 Bedienungsanleitung

7.3.5

Service menu

The following section describes the service menu items.
Notice
Risk of reduced yields. Inverter and grid parameters can be changed in the service menu. The service
menu may only be used by professional personnel who can ensure that the changes do not contra-
vene the applicable regulations and standards.
Reactive power characteristic curve
Overview
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Technical details
744.378 | 12.13
The reactive power characteristic curve must be set during
initial commissioning if this is prescribed for the previously
selected
country. The following applies:
• 3 characteristic curves are available for selection (fig. left):
3
• After configuration, the characteristic curve is displayed as
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1
5
• Each characteristic curve is defined by 2 to 8 nodes.
• A node is defined by the output power P of the inverter
• The phase shift can be set over a range of 0.90 (overexci-
• The type of phase shift is shown in the graph using arrow
• The 3 characteristic curves available for selection have the
Default char. curve (pre-defined)
–
Char. curve cos φ = 1 (pre-defined)
–
Enter char. curve (manually adjustable)
–
a graph (example in fig. left).

x-axis, output power P in %

y-axis, phase shift cos φ

Nodes (in example: 4 nodes)

Arrow symbol Overexcitation

Arrow symbol Underexcitation
(x-axis) and the associated phase shift (y-axis).
tation) through 1.00 (no phase shift) to 0.90 (underexcita-
tion).
symbols defined as follows (defined from the point of
view of the inverter):
: overexcitation, inductive
: underexcitation, capacitive
following properties:
Default char. curve: pre-defined according to the
selected country (example in fig. left).
Char. curve cos φ = 1: pre-defined with cos φ = con-
stantly 1.00. This characteristic curve must be selected
if no reactive power control is to be performed on the
device.
Enter char. curve: the number of nodes and their x/y
values can be configured.
Exceptions: the first node is always located at x (P%) = 0%
and the last node is always located at x (P%) = 100%.
EN
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