Sungrow SG33CX User Manual

User Manual 5 Electrical Connection
41
Step 4 Check for polarity correctness.
5.6.3 Installing the PV Connectors
Step 1 Rotate the DC switch to "OFF" position.
ON
OFF
Step 2 Check the cable connection of the PV string for polarity correctness and
ensure that the open circuit voltage in any case does not exceed the
inverter input limit of 1,100V.
880.0
+
-
Step 3 Insert the PV connectors to the corresponding terminals until there is an
audible click.
Check the positive and negative polarity of the PV strings, and insert the
PV connectors to the corresponding terminal only after ensuring polarity
correctness.
+
-
+
-
+
-
+
-
Arc or contactor over-temperature may occur if the PV connectors are not
firmly in place, and damage caused shall not be covered by the warranty.
Step 4 Follow the foregoing steps to connect PV connectors of other PV strings.

Sungrow SG33CX Specifications

General

Model	SG33CX
Manufacturer	Sungrow
Rated Power	33 kW
Max DC Voltage	1100 V
Max Efficiency	98.7%
Start Voltage	200 V
Total Harmonic Distortion	< 3%
Power Factor at Rated Power	1
DC Connection Type	MC4
Allowable Relative Humidity Range	0 - 100%
Operating Altitude	4000 m
MPPT Voltage Range	200 V - 1000 V
AC Voltage Range	310 V - 480 V
Rated Grid Frequency	50 Hz / 60 Hz
Adjustable Power Factor Range	0.8 leading to 0.8 lagging
Operating Ambient Temperature Range	-25 °C ... +60 °C
Communication	RS485