Sungrow SG25CX-P2, User Manual

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The following requirements about PV string connection must be met. Otherwise, it
may cause irreversible damage to the inverter, which is not covered by the
warranty.
• Mixed use of different brand or model of PV modules in one MPPT circuit, or PV
modules of different orientation or angles in a string may not damage inverter
but will cause system bad performance!
• The inverter enters standby state when the input voltage ranges between 1,000
V and 1,100 V. The inverter returns to running state once the voltage returns to
the MPPT operating voltage range, namely, 160 V to 1,000 V.
5.7.1 PV Input Configuration
• As shown in the figure below, the inverter is provided with multiple PV inputs, and each
PV input is designed with an MPP tracker.
• Each PV input operates independently and has its own MPPT. In this way, string struc-
tures of each PV input may differ from each other, including PV module type, number of
PV modules in each string, angle of tilt, and installation orientation.
• A maximum of two PV strings can be connected to an MPPT controller. For the best use
of PV power, the type, quantity, tilt, and orientation of PV modules connected to the same
MPPT shall be the same.
figure 5-4 PV Input Configuratinon
Prior to connecting the inverter to PV inputs, the specifications in the following table should
be met:
Open-circuit Voltage Limit Max. Current for Input Connector
1100 V 20 A
User Manual 5 Electrical Connection