Security; Appropriate Usage - SMA SUNNY CENTRAL STRING-MONITOR US Technical Description

Security

2 Security
2.1 Appropriate Usage
The Sunny Central String-Monitor is a Smart-Combiner. Depending on the versions, the box provides
the possibility to directly connect 24, 32 or 64 strings and to link them with the Sunny Central inverter.
All inputs are fused in compliance with NEC.
Additionally, a high-resolution string monitoring is integrated in the device. It permanently measures
and monitors the string current of all inputs and detects partial and total dropouts. In case of failures
and dropouts, the responsible person is immediately informed via the WebBox.
Principle of a PV Power System with Sunny Central String-Monitor
A
Position Description
A PV modules
B Sunny Central String-Monitor
C DC disconnect
D Sunny Central
E AC fuse
F AC disconnect
G Public grid
Any other application of the Sunny Central String-Monitor, installation of components and
modifications, that are not explicitly allowed, endanger the safety and void the warranty as well as
the operation permission.
12 SSMUS-TUS094511
B
C
SMA Solar Technology AG
D E F
Stop Start
G
Technical Description