All rights reserved Shenzhen SOFARSOLAR Co ., Ltd.
C
9
All rights reserved Shenzhen SOFARSOLAR Co ., Ltd.
C
10
Identification labels of the equipment：
The labels must NOT be hidden with
objects and extraneous parts (rags,
boxes, equipment, etc.); they must
be cleaned regularly and kept visible
at all times.
1. Heat sink 2. Bracket
Figure2-11 Back view and Bracket dimensions
336.0
135.0
135.0
14.0
80.0
135.0
135.0
10.0
Φ
10
492.0mm 44.2mm
1
2
2.2 Function description
DC power generated by PV array is filtered through Input Board before entering into 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 in abnormal operation conditions. At the same time, Control Board can trigger the relay so
as to protect the internal components.
Operating Principle
Operating Principle
The DC switch disconnects internal circuits from the DC input to facilitate maintenance;
DC SPD (category III, category II is added to S4 & S5) provides the discharge loop for the
overvoltage power on the DC side to protect the SOFAR 10-20KTL internal circuits from DC
overvoltage;
The input and output electromagnetic interference (EMI) filters filter out the EMI inside the SOFAR
10-20KTL to ensure that the SOFAR 10-20KTL meets electromagnetic compatibility requirements;
The Input Board detects the insulation impedance of the PV array and ensures the maximum output
power of the PV system by measuring the voltages & currents of PV array and tracking the
maximum power point (MPPT);
The DC-AC conversion circuit converts DC power into AC power and then the AC power is fed
into the electric grid. The AC output power quality meets the requirements of the electric grid;
The output isolation relay isolates the inverter from the electric grid when the grid or the inverter is
faulty.
The LC filter filters out the high-frequency components from the AC output of SOFAR 10-20KTL
to ensure that the AC output meets electric grid requirements;
AC SPD (category III, category II is added to S5) provides the discharge loop for the overvoltage
power on the AC side to protect the SOFAR 10-20KTL internal circuits from AC overvoltage;
The Communication Board enables the inverter to communicate via RS485, WIFI(optional), user
can access all the operating data via the web browser(PC) and APP(ios & android).
SOFAR 20000TL-Sx Se r i es
SOFAR 10K~20KTL
User manual
SOFAR 10K~20KTL
User manual
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