Intended Use
The Sunny Boy Smart Energy is a single-phase, transformerless hybrid inverter with 3 PV inputs (SBSE3.8-US-50 / SBSE4.8-US-50 / SBSE5.8-US-50 / SBSE7.7-US-50) or with 4 PV inputs (SBSE9.6-US-50 / SBSE11.5-US-50) and a battery connection. The inverter feeds the direct current from the PV modules into the connected battery or converts it to grid-compliant alternating current and then feeds it into the utility grid. The Sunny Boy Smart Energy also converts the direct current supplied by the battery into grid-compliant alternating current. In a system with additional PV inverters, the Sunny Boy Smart Energy can convert the alternating current generated by the PV inverters into direct current and feed it into the battery.
The Sunny Boy Smart Energy has a manual secure power supply function, SMA Backup Secure. When needed, in the event of a power outage, the Sunny Boy Smart Energy can continue to supply selected loads with electricity from the battery and the PV system by means of a socket connected to the inverter.
The product must only be used as stationary equipment.
The product is suitable for indoor and outdoor use.
The product may only be operated with PV modules and cables that are approved in accordance with the electrical standards applicable on-site and the National Electrical Code® ANSI/NFPA 70.
No galvanic isolation
The product is not equipped with a transformer and therefore has no galvanic isolation.
- Do not operate grounded PV modules or batteries together with the product. If grounded PV modules or batteries are connected to the product, then an event will occur. The event will be displayed, along with the associated message, in the event list on the user interface of the product.
- Only ground the mounting frames of the PV modules.
- Only ground the enclosure of the battery.
- The neutral conductor of the AC output is not bonded to ground within the product.
- The neutral conductor of the AC output for backup operation can be grounded depending on the configuration.
PV modules with a high capacity to ground must only be used if the coupling capacity of all PV modules does not exceed 1.54 µF (SBSE3.8-US-50 / SBSE4.8-US-50 / SBSE5.8-US-50 / SBSE7.7-US-50) or 2.30 µF (SBSE9.6-US-50 / SBSE11.5-US-50) (for information on determining the coupling capacitance, see technical information "Leading Leakage Currents" at www.SMA-Solar.com).
To protect the PV system against excessive reverse currents under fault conditions, a DC-side overcurrent protective device must be connected in accordance with the National Electrical Code® to prevent any short-circuit currents that exceed the ampacity of the DC electric circuit or the maximum series fuse rating of the PV modules. Typically, string fuses are used if more than two strings are connected in parallel.
The product may only be operated in connection with a lithium-ion battery approved by SMA Solar Technology AG. An updated list of batteries approved by SMA Solar Technology AG can be found in the system manual at www.SMA-Solar.com.
The inverter/battery combination must be certified in accordance with UL 9540.
The communication interface of the battery used must be compatible with the product. The entire battery voltage range must be completely within the permissible input voltage range of the product. The maximum permissible DC input voltage of the product must not be exceeded.
The product is not suitable for supplying life-sustaining medical devices. A power outage must not lead to personal injury.
All components must remain within their permitted operating ranges and their installation requirements at all times.
The product may only be operated with one of the energy meters approved by SMA Solar Technology AG. The following energy meters are allowed to be used when operating this product:
SMA Energy Meter-US
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.