SPH 3K-6K Hybrid inverter

SPH series

SPH is Hybrid inverter that has grid and off grid function

Please note that SPH 3-6K had better not work in parallel. It will cause some issues, and temporary firmware needs to be flashed. If clients insist on parallel mode, 3 pcs in parallel at most . Besides, SPH 3K-6K single phase inverter has no BH model( High batteyr voltage) like SPH 5000TL BH

SPH 3-6k single phase Board Introcution

SPH 3-6K have totally same boards, including mainboard, IO board, control board, the unique difference is firmware

IO Board

MainBoard

Control Board

SPH 3-6k single phase Port introduction

RS232/WIFI

CT

Meter

It is used for smart meter that consists of exporting current limiation

Shinemaster/VPP

It can be used for Shinemaster, if multi inverters in parallel, you need to buy extra 1 to 2 wire

VPP: Virtual Plant Power that is used to monitor and control inverter. If you want to use Shinebus tool, this port can be used, but make sure that VPP is chosen on settings.

NTC

NTC is temperature sensor that is only for lead acid battery. Standard product in the original package

CAN port

CAN port is used for battery communication

Dry Contact

Dip Switch

DRMS

MPPT port

MPPT A

AC OUTPUT

EPS OUTPUT

IPMOS

USB

SPH 3-6k single phase Principle Introduction

Mainboard

2 BOOST Circuit

2 PV strings are connected to 2 BOOST Circuit which are independent and won’t affect each other.

2 PV input string has MAX current 13.5A

PV starting voltage is 150V, if PV input voltge is lower than 120V , it won’t work.

PV voltage range is 150V-550V, if PV input voltage is lower than 370V, then it will be converted via BOOST circuit,

If PV input voltage is greater than 370V, it won’t pass through Boost circuit

BUS capacitor

H6 Bridge

BUCK-BOOST Circuit

BUCK-BOOST Cicruit contain 4 IGBTs which are used for recticification or INV from BUS voltage

DC-DC circuit on BUCK-Boost Circuit

SPS Cirucit on mainboard

SPS circuit contain 3 parts: Utility SPS circuit, M3 SPS circuit, Main SPS circuit

Utility SPS circuit

Main SPS circuit

M3 SPS circuit

Control board

IO board

M3 Chip

LCD Screen SPS

LCD Screen Voltage

Anti reverse circuit on IO board

AC output relays on IO board

EPS output relays on IO board