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Protect PV.500 Operating Instructions
34 of 73 80000041664 BAL
Sequence control behaviour differs depending on which solar cells
are connected. The solar cells do not need to be earthed for op-
eration with monocrystalline or polycrystalline solar cells. In this
case, insulation measurement is always active.
For operation with thin-film solar cells, the solar cells must be
earthed. In this case, insulation measurement is not active during
earthing.
Insulation measurement sequence control features a “Maintenance
mode”. This mode can only be activated for thin-film solar cells.
Activating this mode disconnects earthing. This can be useful
when mowing areas where solar panels are installed, for example.