SOFAR 3.3~12KTLX-G3
User manual
Copyright © Shenzhen SOFARSOLAR Co., Ltd.
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2.2. Function Description
DC power generated by PV arrays is filtered through Input Board then enter
Power Board. Input Board also offer functions such as insulation impedance
detection and input DC voltage/ current detection. DC power is converted to AC
power by Power Board. AC power is filtered through Output Board then AC
power is fed into the grid. Output Board also offer functions such as grid
voltage/ output current detection, GFCI and output isolation relay. Control
Board provides the auxiliary power, controls the operation state of inverter and
shows the operation status by Display Board. Display Board displays fault code
when inverter is abnormal operation conditions. At the same time, Control
Board can trigger the replay to protect the internal components.
Function Module
A. Energy management unit
Remote control to start/ shunt down inverter through an external control
B. Feeding reactive power into the grid
The inverter is able to produce reactive power thus to feed it into the grid
through the setting of the phase shift factor. Feed-in management can be
controlled directly by APP or through a RS485 interface.
C.
Limited the active power fed into grid
If enable the limited of active power function, inverter can limit the amount of
active power fed into the grid to the desired value (expressed as percentage)
D.
Self-power reduction when grid is over frequency
If grid frequency is higher than the limited value, inverter will reduce the output
power to ensure the grid stability
E. Data transmission
Inverter or a group of inverters can be monitored remotely through an
advanced communication system based on RS485 interface or via USB port.
F. Software update
USB interface for uploading the firmware, remotely uploading by using USB
acquisition stick (WIFI or Ethernet) is also available.
