Technical Information
SC-HEM-UEN083710
Version 1.0
1/12
SUNNY CENTRAL
Notes for grounded operation of the PV generator
1 Introduction
Some module manufacturers recommend or require positive or negative grounding of the PV generator when
using thin-film and back-contact PV modules. In this case, the positive or negative pole of the generator output
is grounded, regardless of the grounding of the module frame.
In case of the Sunny Central with the "GFDI negative ground" or "GFDI positive ground" insulation monitoring
option, the grounding takes place within the device. The inverters are adapted for grounded operation of the
PV generator. The connection to ground is established using a fuse, the GFDI (ground fault detection
interruption).
This technical information complements the user manual and the installation guide for standard devices from
the Sunny Central product range with important instructions and information on grounded operation.
