Sungrow SG33CX User Manual

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5 Electrical Connection
5.1 Safety Instructions
High voltage may be present inside the inverter!
 The PV string will generate lethal high voltage when exposed to sunlight.
 Do not connect AC&DC circuit breakers before finishing electrical
connections.
 Ensure all cables are voltage free before performing cable connection.
 Any improper operations during cable connection can cause device
damage or personal injury.
 Only qualified personnel can perform cable connection.
 All cables must be undamaged, firmly attached, properly insulated and
adequately dimensioned.
Comply with the safety instructions related to the PV strings and the
regulations related to the utility grid.
 All electrical connections must be in accordance with local and national
standards.
 Only with the permission of the utility grid, the inverter can be connected
to the utility grid.
5.2 Terminal Description
Wiring terminals are at the bottom of the inverter, as shown in the figure below.

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