5.5.2 Compatibility Table
Grid type
TN-C grid
TN-S grid
TN-C-S grid
TT grid
IT grid
Grid type
Commissioning
6
Commissioning
6
6.1 Commission the Inverter
1) Remove all covers from the PV array.
2) Check the PV and AC voltage.
3) Plug in the PV input.
4) Turn the DC Disconnect to position "I".
5) If the inverter is connected with PV panel arrays and the input voltage is higher
than 300Vdc, while the AC grid is not connected yet, LCD will display messages in
order as below:
Company info Basic info State info
The LCD will display “ AC V outrange “at State info and the LED turns red.
Please check all information on the LCD, operate by knocks you will see the
different parameters.
Single knock to Light the backlight State info (single knock) Input info
(single knock) Output info
Growatt 6000UE
yes
(N and PE of inverter both
should connect to PEN of grid.)
yes
yes
yes,
if UN-PE < 30V
no
Growatt 5000UE
yes
(N and PE of inverter both
should connect to PEN of grid.)
yes
yes
yes,
if UN-PE < 30V
no
Growatt 4000UE
yes
(N and PE of inverter both
should connect to PEN of grid.)
yes
yes
yes,
if UN-PE < 30V
no
27
28
Information
If the output of inverter was connected to grid with an isolation
transformer, and the inverter display PV Isolation Low error when you
start-up the inverter, please set the parameter “Enable Neutral” via
Growatt software “Shinebus”.
6) Turn on the AC breaker between inverter and grid, the
system will operate automatically.
7) Under normal operating conditions, the LCD displays
'Power: xx.xx Kw' at State info, this is the power feed into
grid. The LED turns green.
8) Check the time and date of inverter as follow:
Single knock to Light the backlight State info (Thrice
knock) Inverter info (single knock) System Time(double
knock), if they are not correct, please set them, refer to
6.3.5setting inverter time or 6.4.3 text line d) setting date
and time.
Fig 6.1
6.2 Operation Modes
Normal Mode
In this mode, the inverter works normally and LED turns green.
Whenever the DC voltage is higher than 200Vdc, inverter converts power to grid
Whenever the DC voltage is lower than 180Vdc, the inverter will work in waiting
status and attempt to connect the grid. In waiting state the inverter consumes
just power generated by the PV panel to monitor the internal system.
Notes: The inverter starts up automatically when DC power from the PV panel is
sufficient.
Fault Mode
The internal intelligent controller can continuously monitor and adjust the system
status. If inverter finds any unexpected conditions such as system fault and inverter
fault, the fault information will be displayed on the LCD. In fault mode the LED turns
red.
Notes: a)
Detailed fault information refers to Chapter 9 Trouble shooting.
b) When PV Isolation error occurred in SAA safety standard, the buzzer will
give an alarm every fifteen seconds.
Shutdown Mode
Inverters automatically stop running during periods of little or no sunlight. In
shutdown mode the inverters take no power from the grid and panel, the LCD and
LED turns off.
Notes: If the PV string DC voltage is too low, the inverter will also turn to Shutdown
Mode.
Derating mode
When AC frequency is higher than 50.3Hz(settable), the inverter will derate its
output power according to the rule.
When user set the output limit command to the inverter, the inverter will also limit
the output according to the setting.
In this derating mode, the LCD will show “DERATING”.
