SMA STP 12-50, Quick Reference Manual

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2 Safety SMA Solar Technology AG
Quick Reference Guide STPxx-50-IS-xx-10 5
CAUTION
Indicates a hazardous situation which, if not avoided, could result in minor or moderate injury.
NOTICE
Indicates a situation which, if not avoided, can result in property damage.
1.5 Symbols in the Document
Icon Explanation
Information that is important for a specific topic or goal, but is not safety-rele-
vant
Section in which the installation and commissioning process is illustrated
graphically.
2 Safety
2.1 Intended Use
The Sunny Tripower is a transformerless PV inverter, with 3 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 intended for use in residential and industrial environments.
The product complies with EN 55011 of class B, group 1.
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.
If the product is operated with a medium-voltage transformer, the low-voltage side must be
configured in a star formation and the neutral point 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).
The product is not equipped with an integrated transformer and therefore has no galvanic isolation.
The product must not be operated with PV modules whose outputs are grounded. This can cause
the product to be destroyed. The product may be operated with PV modules whose frame is
grounded.
PV modules with a high capacity to ground must only be used if the coupling capacity of all PV
modules does not exceed 6 μF (for information on how to determine the coupling capacity, see the
Technical Information "Leading Leakage Currents" at www.SMA-Solar.com).
All components must remain within their permitted operating ranges and their installation
requirements at all times.
The product must only be used in countries for which it is approved or released by SMA Solar
Technology AG and the grid operator.
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