Sungrow SG33CX User Manual

User Manual 9 Troubleshooting and Maintenance
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efficiency may decrease. Therefore, it is necessary to clean the dirty fans and
replace the broken fans in time.
 Stop the inverter and disconnect it from all power supplies before
maintenance.
 Lethal voltage still exists in the inverter. Please wait for at least 5
minutes and then perform maintenance work.
 Only qualified electricians can maintain the fans.
The operation procedure is as follows:
Step 1 Stop the inverter (see 8.1 Disconnecting the Inverter).
Step 2 Loosen the screw on the sealing plate of the fan module.
2
1
Step 3 Press the hump of the latch hook, unplug the cable connection joint
outwards, and loosen the screw on the fan holder.
2
1
Step 4 Pull out the fan module, clean the fans with soft brush or vacuum cleaner,
and replace them when necessary.

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