SMA Solar Technology AG 3 Product Description
Installation Manual SCCPXT-IA-D7-en-42 13
3 Product Description
3.1 PV System Overview
The Sunny Central is a PV inverter which converts the direct current generated in the PV modules into grid-compliant
alternating current. An external MV transformer fitted downstream feeds the generated alternating current into the utility
grid.
Figure1: Principle of a grid-tie PV system with one inverter
3.2 Sunny Central
3.2.1 Design of the Sunny Central
Figure2: Sunny Central with touch display (example)
Position Designation
A PV array
B DC sub-distribution (e.g. Sunny String-Monitor)
C Sunny Central
D External MV transformer, e.g., Transformer Compact Station with MV transformer
E Utility grid
Position Designation
A Inverter cabinet
B Interface cabinet
CTouch display
DService interface