Sungrow SG30CX, 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 PV modules of different brands or models in one MPPT circuit, or
PV modules of different orientation or inclination in a string may not damage in-
verter, 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, 200 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: PV inputs
1~n (SG30/33/40/50CX: n=3/3/4/5); 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.
• Each PV input area includes two DC inputs DC1 and DC2. For the best use of DC power,
DC1 and DC2 should be the same in PV string structure, including the type, number, tilt,
and orientation of the PV modules.
figure 5-3 PV Input Configuratinon
Prior to connecting the inverter to PV inputs, the specifications in the following table should
be met:
Type
Open-circuit Voltage
Limit
Max. Current for Input
Connector
SG30/33/40/50CX 1100 V 30 A
SG30/50CX-NI 1100 V 30 A
5 Electrical Connection User Manual