User Manual 6 Electrical Connection
35
6.4 Connecting Inverter to PV Arrays
Lethal voltage exists!
PV arrays produce electrical energy when exposed to light and thus can
create an electrical shock hazard. Wiring of the PV arrays should only be
performed by qualified personnel.
Before connecting the PV arrays to the inverter, make sure that the
impedances between the positive terminal of the PV string and Earth and
the impedances between the negative terminal of the PV string and Earth
are larger than 1Mohm.
6.4.1 PV Inputs Configuration
SG10/12/15/20KTL inverters have two PV input areas DC1 input and DC2 input, each
with its MPP tracker. The two PV input areas can work in Independent mode or
parallel mode, set by LCD display menu (see “10.13 PV Configuration Mode
Setting”).
You may see technical information “PV Configuration Mode Selection Guide” in the
Sungrow website to decide the PV configuration mode for inverter
The mode in which actual PV strings are connected and the mode that is set in
the inverter LCD display menu should be identical. Otherwise inverter will
not work normally.
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