Protection Of The Connection To The Electricity Grid; Type Of Grid; Cable Length; Photovoltaic Panels - Ingeteam INGECON SUN 40TL U M480 Manual De Instalacion Y Uso

Ingeteam Preparation for installing the unit

5.4. Protection of the connection to the electricity grid

It is necessary to install protection elements in the connection between the inverter and the electricity grid.
Thermomagnetic circuit breaker
A thermomagnetic circuit breaker and/or fuse must be installed on the connection between the inverter and the
electricity grid.
The following table provides the necessary data for the selection of these devices by the installer.
Rated current for the
Maximum inverter
INGECON SUN 3Play thermomagnetic circuit
current
breaker
40TL U M480 48 A 63 A
When selecting the protection in an installation you must take into account that its breaking capacity is greater
than the short-circuit current of the mains connection point.
You must take into account when correctly selecting the protection that the ambient working temperature
influences the maximum current permitted by these protections as indicated by the manufacturer.

5.5. Type of grid

These units must be connected to a grid with a star formation with grounded neutral. The grid neutral must be
connected to the unit.

5.6. Cable 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 stray capacity of the PV array must be lower than 2.4 μF.
22 ABO2012IQM01_ - Installation and Operation Manual