Proper Usage - Steca Elektronik coolcept Notice D'installation Et D'utilisation

2.4

Proper usage

The inverter may only be used in grid-connected photovoltaic systems. The inverter is suitable
n
for use with all solar modules whose connections do not need to be grounded.
In the installation solar modules that have an IEC 61730 Class A rating are required as the
n
inverter is non-isolated.
If the maximum AC mains operating voltage is higher than the photovoltaic array maximum
n
system voltage then solar modules that have a maximum system voltage rating based upon the
AC mains voltage are required.
An overview of suitable solar modules is available at www.stecasolar.com/matrix.
Potential curves of the plus (+) and minus (–) DC connections with respect to PE
U = Potential between the plus (+) and minus (–) DC connections
PV
StecaGrid 1800/2300/3010 and 1800x/2300x/3010x
U
125 V
U
0 V
−160 V
−320 V
Fig. 1: Potential curves of U
StecaGrid 3000/3600/4200 and 3600x/4200x
747.431
= 125 V
PV
DC (+)
DC (−)
at 125 V (left) and 500 V (right)
PV
U
320 V
250 V
180 V
0 V
t
−180 V
−250 V
−320 V
DC (+)
U = 500 V
PV
DC (−)
GB
t
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