Product Description; System Introduction - Sungrow SG30CX User Manual

Product Description

2

2.1 System Introduction

The inverter is a transformerless 3-phase PV grid-connected inverter. As 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 to feed the
AC current into the utility grid.
The intended usage of the inverter is illustrated in the following figure.
The inverter must not be connected to a PV string that requires positive or nega-
tive grounding.
Do not connect any local load between the inverter and the AC circuit breaker.
D D e e s s c c r r i i p p t t i i o o n n
I I t t e e m m
PV strings
A
B Inverter
Grid connection
C
cabinet
D Transformer
Utility grid
E
The following figure shows the common grid configurations.
4
f f i i g g u u r r e e 2 2 - - 1 1 Inverter Application in PV Power System
N N o o t t e e
Monocrystalline silicon, polycrystalline silicon and thin-film
without grounding.
SG30CX, SG33CX, SG40CX, SG50CX.
Includes devices such as AC circuit breaker, SPD, metering
device.
Boost the low voltage from the inverter to grid-compatible
medium voltage.
TN-C, TN-S, TN-C-S, TT, IT.