Cabling Length; Photovoltaic Panels; External Disconnection Device - Ingeteam INGECON SUN 3TL Installation And Operation Manual

Ingeteam Preparation for installing the unit
Two-phase grid 220/240 Vac (L-L-PE)
Phase NTN
Phase

5.6. Cabling length

The inverter measures the voltage in its connection terminals. For this reason, the installer must use an AC cable
with a sufficiently low impedance so that increasing the voltage in the cable (between the distribution transformers
and the unit) does not cause the unit to be disconnected due to high voltage.

5.7. Photovoltaic panels

The photovoltaic panels of the installation must be Class A (IEC 61730). These units do not allow photovoltaic
panel grounding, therefore the positive and negative pole of the PV array must not be connected to ground.
Otherwise the inverter will give an insulation fault.
However, the metal structure to which the photovoltaic panels are attached and/or the metal frame of the panel can
be connected to ground.

5.8. External disconnection device

The DC and AC supply must be shut off for equipment inspection work. To do this, the installer must fit an external
disconnection device.
22 ACL2011IQM01_ - Installation and Operation Manual