Overview; Product Intro - KEHUA TECH SPI-B X2 Series User Manual

2 Overview

This chapter mainly introduces product appearance, structure, working principles and grid form, etc.

2.1 Product Intro

The inverter converts the DC energy from PV string into AC energy and then feedbacks to power grid,
which is suitable for the commercial roof grid-tied system and large power station grid-tied system.
The PV grid-tied generation system consists of PV string, PV grid-tied inverter and grid , as shown in
Figure2-1.
PV string
Figure2-1 PV grid-tied generation system
The inverter supports four grid forms, that is TN-S, TN-C, TN-C-S and TT, as shown in Figure2-2.
Transformer
L1
L2
L3
N
PE
Transformer
L1
L2
L3
N
PE
Figure2-2 Grid form
6
2 Overview
PV grid-tied
inverter
PE/N
PE
Inverter
TN-S
L1
L2
L3
N
PE
PE
Inverter
TN-C-S
PV Grid-tied Inverter SPI-B X2 Series (8K-25K)
Grid
Transformer
L1
L2
L3
PE
Inverter
TN-C
Transformer
Inverter
TT
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