MODULAR SUNWAY TG
TE OD
INSTALLATION GUIDE
14/
139
Rev. 03
– 01/06//2018
The AC Output Unit comprises control devices, such as the Contactor for the connection to the grid that
can operate as an Interface Device (please refer to section 4.3), the output EMI filters and the output
MCCB.
The inverter is provided with an interface device operating on minimum and maximum voltage / frequency
thresholds in compliance with the applicable standards.
Figure 3: Block diagram
Once the SUNWAY TG TE is connected to the photovoltaic generator and is properly started (see section
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) the control system synchronises with the grid and closes the parallel c
ontactor when the PV field voltage exceeds the starting voltage value.
The inverter will then operate as a generator of sinusoidal current with a power factor that is typically equal
to 1.
The integrated MPPT (Maximum Power Point Tracker) algorithm constantly keeps the working point of the
PV field at the maximum power delivered.
The grid frequency and the grid voltage values are constantly checked during normal operation. This allows
detecting undesired islanding operation. Islanding detection can be performed by an external relay
according to the regulations in force (see section 4.3.1).
The plant data can be read from the LCD display/keypad placed on the front wall. The plant data includes
the active energy and the reactive energy, the operation time and the temperature of the internal
components. The keypad allows accessing all the inverter measures and programming parameters.
The inverter is provided with one Ethernet port for the connection to the remote monitoring system, both in
local mode and in remote mode (see section 4.9).
The Data Logger board is available as an option board. It is a telecommunications unit between the inverter
and the connected String Box. It stores local production data and allows connecting to the Santerno Remote
Monitoring (see section 8.7).
Several diagnostic functions are integrated in the inverter logic, such as the constant check of the program
memory integrity, the PV field isolation monitoring, the detection of the temperature of the internal
components, the detection of the input / output overcurrent, the control of input fuses.
1.4.
Main integrated standard functions
The main standard functions implemented by the MODULAR SUNWAY TG TE OD are detailed below.
