Intended Use
The Sunny Highpower is a transformerless PV inverter. It converts the direct current from the PV array into grid-compliant three-phase current and feeds it into the utility grid via a separate transformer.
The product is intended for use in commercial, industrial or business sectors.
The product is suitable for operation in a chemically active environment in accordance with IEC 60721-3-4 as per Class 4C2.
The product is suitable for indoor and outdoor use.
The product must only be operated with PV modules of protection class II in accordance with IEC 61730, application class A. The PV modules must be compatible with this product.
The product must only be operated with PV arrays (PV modules and cabling) that are approved by the electrical standards applicable on-site and the National Electrical Code® ANSI/NFPA 70 or the Canadian Electrical Code® CSA C22.1.
The product may only be operated in connection with a suitable medium-voltage transformer. The low-voltage side must be configured in a star formation and the neutral point must be grounded (for information about the requirements of the medium-voltage transformer, consult the technical information "Important Requirements for Medium-Voltage Transformers" under www.SMA-Solar.com).
No galvanic isolation
The product is not equipped with a transformer and therefore has no galvanic isolation.
- Do not operate grounded PV modules together with the product. If grounded PV modules are connected to the product, 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.
PV modules with a high capacity to ground may only be used if their coupling capacity does not exceed 32 μF.
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.
All components must remain within their permitted operating ranges and their installation requirements at all times.
The product is approved for the US and Canadian market.
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 SMA products, e.g., changes or modifications, are only permitted with the express written permission of and according to the instructions from SMA Solar Technology AG. Unauthorized alterations can be dangerous and lead to personal injury. In addition, an unauthorized alteration 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 the intended use.
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 and is not intended to replace any local, state, provincial, federal or national laws, regulations or codes applicable 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.