19
20
WARNING
Danger of damage to electronic components due to
electrostatic discharge.
Take appropriate ESD precautions when replacing and
installing the inverter.
DANGER
Before connecting the power cables, you much connect both
ground wire of DC and AC side in wire box first.
5.6.2 System Diagram with Inverter Electrical
Intended Use
The unit converts the DC current generated by the photovoltaic (PV) modules to
grid-compliant alternating current and feed-in into the electricity grid. Growatt
inverters are built according to all required safety rules. Nevertheless, improper use
may cause lethal hazards for the operator or third parties, or may result in damage
to the units and other property.
This unit or system is provided with fixed trip limits and shall not be
aggregated above 30 kW on a single Point of Common Connection.
PV Panel: Provide DC power to inverter.
Converts DC (Direct Current) power from PV panel to AC (Alternating
Current) power. Because Inverter is grid-connected, it controls the current
amplitude according to the PV Panel power supply. Inverter always tries to convert
the maximum power from your PV panel.
Connection system: This “interface” between Utility and PV-Inverter may
consist of electrical breaker, fuse and connecting terminals. To comply with local
safety standards and codes, the connection system should be designed and
implemented by a qualified technician.
Utility: Referred to as “grid” in this manual, is the way your electric power
company provides power to your place.
Principle of PV plant system
Position
A
B
C
D
E
F
Description
PV modules
DC load circuit fuse or breaker
Growatt Inverter
AC load circuit fuse or breaker
Energy meter
Utility grid
Wire box
In the wire box, the right side is AC output wire connection terminal, and the left
side is PV input wire connection terminal, the middle is DC switch.
