SMA STP 8000TL-10 - Manual (Page 16)

3 Product Description SMA Solar Technology AG
16 STP8-17TL-IA-en-31 Installation Manual
3.6 Intelligent String Failure Detection
The Sunny Tripower is equipped with a system that recognizes the total failure of individual strings or
partial strings (see the diagram below). With a PV module current of approx. 1 A, monitoring of up
to six partial strings per string input is possible. The prerequisite for the reliable functioning of the
intelligent string failure detection is an identical alignment of the connected PV array at input A and
input B. For the learning phase, the Sunny Tripower needs approximately 14 days at moderate
irradiation after successful activation. One advantage of this system is that its auto-adaptive function
completely eliminates the necessity of any configuration. In the event of a string failure, a warning
message is issued on the display or via external communication (e.g. Sunny WebBox or
Sunny Explorer). Note that extreme shading and snow-covered PV modules trip warning messages.