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Identificazione: MD-AL-GI-00
Rev. 4.0 del 31.01.18 - Applicazione: GID
Manual of 07/06/2019 Rev. 2.1 “User Manual for 3K-6KTLM LITE
Labels on the inverter
Figure 4 – Do not remove the label on the side of the inverter
2.2.
Description of functions
The DC power generated by the PV modules is filtered through the input board before entering the power
board. The input board also has the function of detecting the insulation impedance and the DC input
voltage/current. The power board converts the DC power into AC power. The current converted into AC is
filtered through the output board and is then fed into the grid. The output board also has the function of
measuring the grid and GFCI voltage/current and acts as an output insulation relay. The control provides the
auxiliary power supply, controls the operating status of the inverter and shows it on the display. The display
also shows the error codes when the inverter is not functioning properly. At the same time, the control board
can activate the protection relay in order to disconnect the inverter from the grid.
Inverter functions
A. Feeding reactive power into the grid
The inverter is able to produce reactive power and feed it into the grid through the setting of the Power
Factor. The feed-in management can be controlled directly by the grid company through a dedicated RS485
interface.
B. Limiting the active power fed into the grid
If enabled, the inverter can limit the amount of active power fed into the grid at the desired value (expressed
as a percentage).
C. Automatic power reduction when grid is over frequency
When the grid frequency is higher than the limit set, the inverter reduces the output power in order to
ensure the stability of the grid.
D. Data transmission
The inverter (or a group of inverters) can be monitored remotely via an advanced communication system
based on a RS485 interface or via Wi-Fi.
E. Software update
A microSD card is used to update the firmware.
