2 Safety
SMA Solar Technology AG
Operating manual
SI44M-80H-13-BE-en-15
12
2
Safety
2.1
Intended Use
The Sunny Island is a battery inverter that controls the electrical energy balance in an off-grid system, in a system for
increased self-consumption or in a battery-backup system.
The product is for use in weather-protected outdoor areas and in indoor areas. The ambient conditions prescribed for
the product must be observed at all times.
The product must only be used as stationary equipment.
The product is not suitable for supplying life-sustaining medical devices. A power outage must not lead to personal
injury.
Device type SI4.4M-13 must not be used for single-phase single-cluster systems and not for three-phase multicluster
systems (see planning guidelines "Design of Off-Grid Systems with Sunny Island Devices").
The entire battery voltage range must be completely within the permissible DC input voltage range of the Sunny Island.
The maximum permissible DC input voltage of the Sunny Island must not be exceeded. The battery must be protected
against short circuits. The locally applicable standards and directives must be complied with.
With lead-acid batteries, the battery room must be ventilated in accordance with the requirements of the battery
manufacturer and with the locally applicable standards and directives (see documentation of the battery
manufacturer).
The following conditions must be satisfied for lithium-ion batteries:
• The lithium-ion battery must comply with the locally applicable standards and directives and must be intrinsically
safe.
• The battery management of the lithium-ion battery used must be compatible with the Sunny Island (see the
technical information at “List of Approved Batteries”).
• Applicable for off-grid systems and battery-backup systems: the lithium-ion battery must be able to supply sufficient
current at the maximum output power of the Sunny Island (see Section 16, page 175).
The DC terminal of the inverter is exclusively intended for the connection of a battery with external battery fuse. Only
DC loads or DC energy sources that are immune to electromagnetic interference must be used.
The maximum output power of the AC sources must be observed in off-grid systems and battery-backup systems (see
Section 16, page 175). The powers of the individual Sunny Island inverters are added to yield the maximum total
power.
The grid configuration of the utility grid must be a TN or TT system. Cables with copper conductors must be used for
the installation.
The multifunction relays of the inverter are not suitable for controlling safety-relevant functions which can endanger
persons in the event of a malfunction in the multifunction relays.
Use SMA products only in accordance with the information provided in the enclosed documentation and with the
locally applicable laws, regulations, standards and directives. Any other application may cause personal injury or
property damage.
Alterations to the SMA products, 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 in most cases
terminate 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, dry place for
future reference and observe all instructions contained therein.
This document does not replace any regional, state, provincial, federal or national laws, regulations or standards that
apply to the installation, electrical safety and use of the product. SMA Solar Technology AG assumes no responsibility
for the compliance or non-compliance with such laws or codes in connection with the installation of the product.
