Product Introduction; Intended Usage - Sungrow SG33CX User Manual

2 Product Introduction

2.1 Intended Usage

SG33CX, SG40CX,
grid-connected inverter, is an integral component in the PV power system.
The inverter is designed to convert the direct current power generated from the
PV modules into grid-compatible AC current and feeds the AC current to the
utility grid. The intended usage of the inverter is illustrated in Fig. 2-1.
A
Fig. 2-1 Inverter application in PV power system
Inverter cannot connect the PV strings whose positive and negative
terminals need to be grounded.
Do not connect any local load between the inverter and the AC circuit
breaker.
Item Description
A PV strings
B Inverter
Grid
C connection
cabinet
D Transformer
E Utility grid
4
SG50CX, a
B C
Note
Monocrystalline silicon, polycrystalline silicon and
thin-film without grounding.
SG33CX, SG40CX, SG50CX.
Includes devices such as AC circuit breaker, SPD,
metering device.
Boost the low voltage from inverter to grid-compatible
medium voltage
TN-C, TN-S, TN-C-S, TT, IT
transformerless
D
three-phase PV
E