V-TAC VT-6605305 Manuel D'instructions page 5

MAINTENANCE AND INSPECTION
Only qualified electricians are allowed to perform the mainte-

nance, inspection, and components replacement of the inverter.
Contact with the local dealer or supplier for maintenance.

In order to avoid irrelevant personnel from entering the mainte-

nance area during maintenance, temporary warning labels must be
placed to warn non-professionals to enter or use fence for isolation.
Firstly disconnect all power supplies of the grid to the inverter

before any maintenance, and then disconnect the DC breakers and
wait for at least 5 minutes until the inverter is discharged before
maintenance.
Please follow electrostatic protection norms and take correct

protective measures because of the electrostatic sensitive circuits
and devices in the inverter.
Do not use parts and components not provided by our company

during maintenance.
Restart the inverter after settling the fault and problem which may

affect the safety and performance of the inverter.
Do not get close to or touch any metal conductive part of the grid

or inverter, otherwise electric shock, physical injury or death and fire
may occur. Please do not ignore the warning icons and instructions
with "electric shock".
SOLAR GRID-TIED POWER GENERATION SYSTEM
APPLICATION
The photovoltaic grid-tied power generation system consists of solar modules, grid-tied
inverter, metering devices and public grid.
Figure 1 Application of the series grid-tied solar inverters
Grid-tied solar inverter is the core of photovoltaic power generation system. The solar energy
can be converted into DC electric energy through solar modules and then be changed into
sinusoidal AC energy which has the same frequency and phase with the public grid by
grid-tied solar inverters, and then be fed to the grid.
The series grid-tied solar inverters are only applied in solar grid-tied power generation
system and its DC input are only composed of crystalline silicon solar modules whose
negative and positive poles are not grounded.