Ingeteam INGECON SUN 40TL U M480 Manual De Instalacion Y Uso página 37

DC connection
3. Make the connection with a screw terminal marked with the polarity and numbering of the PV array.
These terminals are marked as XPV1+, XPV1-, XPV2+ and XPV2-. It is important to remember that not all
models of the unit have the same rated current for each input.
4. To make the connection, strip a 22/32 in (18 mm) section of the cable. Using a tubular terminal is
optional.
5. Screw in the terminal with a torque of 44.25 lb.in (5 Nm).
6. Ensure the connections are firm.
When powering the PV array, follow these steps:
7. Only connect string 1 in the external string box of the MPPT1.
8. Turn the DC switch to ON.
9. Check that at least one of the unit's display LED blinks. Otherwise, check the wiring polarity (in the
inverter and in the string box), turn the DC switch OFF and fix it.
10. Turn the DC switch to OFF.
11. Disconnect the string 1 wiring on the MPPT1 in the string box.
12. Repeat steps 7 to 10, with the MPPT2 string 1.
13. Connect the remaining stings according to the polarities.
ABO2012IQM01_ - Installation and Operation Manual
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