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.

For Australia only: For systems with parallel operation with the utility grid, the Sunny Island may only be installed indoors.

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 ( > Technical Data).

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 ( > Technical Data). 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.

The products by SMA Solar Technology AG are not suitable for use in

  • Medical devices, in particular products for supplying life-support systems and machines,

  • Aircraft, the operation of aircraft, the supply of critical airport infrastructure and airport systems,

  • Rail vehicles, the operation and supply of rail vehicles and their critical infrastructure.

The above list is not exhaustive. Contact us if you are unsure whether products by SMA Solar Technology AG are suitable for your application.

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.

The documentation must be strictly followed. Deviations from the described actions and the use of materials, tools, and aids other than those specified by SMA Solar Technology AG are expressly forbidden.

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 as well as failure to observe the documentation 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 documentation supplied is an integral part of SMA products. 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.

The type label must remain permanently attached to the product.

    Safety
    IMPORTANT SAFETY INFORMATION