SMA SSM-U-1615 - Manual (Page 8)

2 Safety
2.1 Intended Use
The SMA String‑Monitor is a PV array junction box to which several strings can be connected in
parallel. The SMA String-Monitor monitors the input currents of the strings and detects failures, thus
helping to minimize power and yield losses.
The SMA String‑Monitor can be operated in large-scale PV power plants with central inverters from
SMA Solar Technology AG or other PV inverters.
The maximum current values for the SMA String-Monitor must not be exceeded.
The SMA String-Monitor should only be operated when the strings are fuse protected. SMA Solar
Technology AG guarantees safe operation of the SMA String-Monitor with inline fuse connectors as
string fuses, providing that the inline fuse connectors are connected directly to the DC connectors of
the string cables on the DC subdistribution. For any other type or location of the string fusing, SMA
Solar Technology AG cannot guarantee safe operation of the SMA String-Monitor or compliance
with the required thresholds. The inline fuse connectors are available as accessories.
The product is suitable for indoor and outdoor use.
All work on the product must only be performed using appropriate tools and in compliance with the
ESD protection regulations.
The installation of SMA accessories in the product is permissible without specific approval by SMA
Solar Technology AG, providing that the product supports the given SMA accessories (see
Section 14, page 72).
The product must only be used in countries for which it is approved or released by SMA Solar
Technology AG and the grid operator.
Use this product only in accordance with the information provided in the enclosed documentation
and with the locally applicable standards and directives. Any other application may cause
personal injury or property damage.
Alterations to the product, e.g. changes or modifications, 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.
The type label must remain permanently attached to the product.
2 Safety SMA Solar Technology AG
Operating Manual SSMUXX15-BE-en-10 8