Table of Contents
Advertisement
SMA Solar Technology AG
2
Safety
2.1 Appropriate Usage
The Sunny String-Monitor is an accessory for the Sunny Central central inverter. The DC subdistributor
offers the possibility of connecting several strings in parallel. The Sunny String-Monitor monitors and
recognizes outages and thus prevents loss of power and output. The string fuses in the Sunny String-
Monitor disconnect defective strings which, for example, have been damaged due to a short-circuit
in the module or in the cabling of the PV array.
The Sunny String-Monitor allows monitoring of the integrated overvoltage protectors. The overvoltage
protectors protect the inverters from transient overvoltages.
A
Figure 1: Principle of a grid-tied PV plant
Position
A
B
C
D
E
Technical Description
B
SM A
Description
PV array
Sunny String-Monitor SSM
Sunny Central
Transformer
Public grid
C
SU NN
Y CE
NT RA
L 80 0C
P
SMA
2 Safety
D
E
SSM-TEN103132
9
Advertisement
Table of Contents
