SMA SI 3.0-11 Installation - Manual (Page 9)

SMA Solar Technology AG 2 Safety
Installation Manual SI30M-44M-60H-80H-IA-en-30 9
2 Safety
2.1 Intended Use
The Sunny Island is a battery inverter which controls the electrical energy balance in an off-grid system, in a battery
backup system, or in a system for increased self-consumption. In a battery backup system, you can also use the
Sunny Island for increased self-consumption.
The Sunny Island is suitable for use indoors and in weather-protected outdoor areas.
The grid configuration of the generator or the utility grid must be a TN or TT system. Cables with copper wires must be
used for the installation.
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.
Device types SI3.0M-11 and SI4.4M-11 do not support all off-grid system variants. Only device types SI6.0H-11 and
SI8.0H-11 are suitable for single-phase single cluster systems and three-phase multicluster systems (see the Quick
Reference Guide "Off-Grid Systems").
The Sunny Island is not suitable for supplying life-sustaining medical devices. A power outage must not lead to personal
injury.
AC sources (such as PV inverters) can be used in off-grid systems and battery backup systems for energy supply. Too
much power from the AC sources in the stand-alone grid or with battery backup systems in a battery backup grid can
lead to system failures. The maximum output power of the AC sources must be observed in off-grid systems and battery
backup systems (see Section 10 "Technical Data", page 94). The powers of the individual Sunny Island inverters are
added to yield the total maximum power.
The Sunny Island uses batteries for the storage of energy. The nominal voltage of the battery must correspond to the input
voltage on the DC connection. A fuse switch-disconnector (e.g. BatFuse) must be installed between the battery and the
Sunny Island. The battery room must be ventilated in compliance with the requirements of the battery manufacturer and
with the locally applicable standards and directives (see documentation of the battery manufacturer). If connecting a
lithium-ion battery, the following must be observed:
• The lithium-ion battery must comply with the locally applicable standards and directives and be intrinsically safe.
• Battery management of the lithium-ion battery must be compatible with the Sunny Island (see "Safety Information" in
the quick reference guide for the relevant system).
In off-grid systems with lead-acid batteries only, a maximum of four Sunny Island Charger charge controllers can be
connected per cluster. The battery management must record the DC current when charging and discharging the battery.
A battery current sensor may be installed to allow precise measurement of the battery current. The Sunny Island is not
suitable for establishing a DC distribution grid.
The Sunny Island can control various devices in the system (e.g. load-shedding contactors) via two multifunction relays.
The multifunction relays are not suitable for controlling functions which may endanger persons in the event of a
malfunction of the multifunction relays – for example, if there is insufficient redundancy in the ventilation of the battery
room.
Alterations to the product, e.g. modifications or conversions, are permitted only with the express written permission of
SMA Solar Technology AG. Unauthorized alterations will void guarantee and warranty claims and usually void the
operation permit. 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.