SMA SSM8-21-BS - Manual (Page 6)

2 Safety SMA Solar Technology AG
6 SSMxx-21-IA-BS-JP-en-20 Installation Manual
Nomenclature
In this document the device types of the Sunny String-Monitor are referred to as "Sunny String-Monitor".
2 Safety
2.1 Intended Use
The Sunny String-Monitor is a PV array junction box to which several strings can be connected in parallel. The
Sunny String-Monitor monitors the input currents of the strings and detects failures, thus helping to minimize power and
yield losses.
Figure 1: Principle of a grid-tie PV system
The maximum current values for the Sunny String-Monitors must not be exceeded. The Sunny String-Monitor is suitable
for indoor and outdoor use.
The Sunny String-Monitor can be used in large-scale PV power plants with Sunny Central inverters. For the optimum
operation of the Sunny String-Monitor, observe the mounting location requirements (see Section 12 "Technical Data",
page 51).
Alterations to the product, e.g. modifications or conversions, are only permitted with the express written permission of
SMA Solar Technology AG. Unauthorized alterations will void guarantee and warranty claims and usually void the
operating license. SMA Solar Technology AG shall not be held liable for any damage caused by such changes.
Any use of the product other than that described in the Intended Use section does not qualify as appropriate.
The enclosed documentation is an integral part of this product. Keep the documentation in a convenient place for future
reference and observe all instructions contained therein.
Only use the Sunny String-Monitor in accordance with the information provided in the enclosed documentation. Any other
use can result in personal injury or property damage.
Position Designation
A PV array
B Sunny String-Monitor
C Inverter
D MV transformer
E Utility grid