SMA SUNNY TRIPOWER 12000TL-US - 2 Safety; Intended Use

2 Safety
SMA Solar Technology America LLC
Installation Manual STPTL-US-10-IA-xx-20 11
2 Safety
2.1 Intended Use
The SunnyTripower is a transformerless PV inverter, with 2 MPPtrackers, that converts the direct
current of the PV array to grid-compliant, three-phase current and feeds it into the utility grid.
The product is suitable for indoor and outdoor use.
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.
SMA offers the SMAConnectionUnit which is equipped with fuse holders for string fuses for up to
eight strings and with a DC load-break switch. The SMA Connection Unit combines up to four
strings to each of two output circuits. These two DC electric circuits can be connected to the two
MPP tracker inputs of the SunnyTripower (for further information see the installation manual of the
SMAConnectionUnit-US at 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 communication product.
• Only ground the mounting frames of the PV modules.
• The neutral conductor of the AC output is not bonded to ground within the product.
PV modules with a high capacity to ground may only be used if their coupling capacity does not
exceed 3.5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, this requires string fusing where more than
two strings are combined in parallel. Where an overcurrent protection device is required, the
National Electrical Code
®
requires that both positive and negative conductors have overcurrent
protection for ungrounded PV modules.
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 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.
Alterations to the product, e.g. changes or modifications, are only permitted with the express written
permission of SMA. Unauthorized alterations will void guarantee and warranty claims and in most
cases terminate the operating license. SMA 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.
ENGLISH