User Manual
36
6.3
Connecting Inverter to PV Arrays
Lethal voltage exists!
PV arrays generate electrical energy when exposed to light and thus can
create an electrical shock hazard.
Make sure that the PV impedance to the ground is proper before connecting
the PV array to the inverter.
6.3.1 PV Inputs Configuration
The SG36KTL-M inverter has three PV input areas DC1 input
、
DC2 input and DC3
input, each with its MPP tracker.
There is a risk of inverter damage! The following requirements should be met;
otherwise they will lead to loss of any and all warranty rights.
The inverter internal cable connection cabinet is equipped with positive
fuse and no negative fuse. During system design, configure or not
configure the external fuse to the negative cables of the string according
to the local regulations.
Make sure that the maximum short circuit current of each DC input is less than
inverter allowable limit.
Make sure that the maximum open voltage of each string is less than 1100V.
Voltage over 1100V can damage the inverter.
The three PV inputs work independently, each with its own MPPT. Therefore the four
PV inputs can be different with each other, including different PV module types,
different numbers of connected in PV string, different tilt angles or orientation angle
of PV modules.
As shown in the following diagram, the inverter should choose independent mode
due to different orientation angle between the three PV inputs.
