01
01 INTRODUCTION
ETC series bidirectional inverter is designed for indoor use, which could be used with or without
existing PV system to store energy using batteries.
Energy produced from the PV system will be used to optimize self-consumption, excess will be
used to charge the battery, anymore could be exported to the grid. Loads will be supported in
priority by PV system, then battery power, if more power is needed, energy will be imported from
the grid.
ETC system normally has the following operation modes based on your conguration and layout
conditions.
Note:
The introduction describes a general behavior of
ETC system. The operation mode can be adjusted
on depending on the system layout. Below are the
general operation modes for ETC system.
1.1 Operation Modes Introduction
Mode Ⅰ
Energy produced by the PV system is used
to optimize self-consumption needs. Excess
energy is used to recharge the batteries and
any additional excess energy is then exported
to the grid.
Mode Ⅱ
When there is no PV power,and the battery
is sucient, loads will be supplied with
electricity from the battery and the grid.
Mode Ⅲ
When grid power fails,the system
automatically switches to Back-Up mode. The
Back-Up load can be supported by PV and
battery.
Mode Ⅳ
The battery can be charged from the grid
and the charging time/power can be set to
various options in the PV Master App.
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