维修手册
专案名称：
Axpert VM III-5000/VM III-3000
专案编号：
S1711171
修订版次：
00
PAGE
V-RDP-004-73 A
1. General information
1.1 Getting start
This manual is used as a checking and repairing guide for Axpert VMIII-5200 and
VMIII-32
00. Before read this manual, it’s better to have some electrical or electronic
background knowledge. With this guide, you can fix the inverter by yourself firstly.
There are five main parts of this guide:
General information:
This part is the basic information of the inverter; you can start to know
the inverter from this chapter.
Troubleshooting:
This part will tell you how to do when you face a problem.
Checking and measuring guide:
This part will teach you how to check or repair the
inverter by measuring the critical components.
Assembling guide:
This part teaches you how to take the board outside and fix the new
one.
Cables connection guide:
This part will present the signal cables connection of the
inverters.
1.2 Basic topology introduction
The topology of the inverter shows as below:
Hybrid Inverter (VM III)
From GRID
DC BUS
From PV
Charge/Discharge
Charge/Discharge
To Battery
To LOAD
Bi-directional
DC/AC Inverter
Bi-directional
DC/AC Inverter
Boost
Boost
Battery
Battery
BMS
BMS
Compare with UPS or normal inverter, INVERTER combines a solar charger inside. Solar
charger can be a supplement for battery when there is not grid. And with the solar charger,
the inverter can have more working modes than UPS. For detail information please refer to
our user manual.
1.3 Inverter family
This service manual includes different models of the inverter, the table as below contains some important
parameters with different models.
These models names are only neutral names; please match the real model name of your inverter to the
model name in the table by comparing the typical characteristics.
Model name
Power rating
Charger type
Charger number
Axpert VMIII-5000
5.2KVA
MPPT
1
Axpert VMIII-3000
3.2KVA
MPPT
1
