PVI 50/60 TL Installation and Operation Manual (Rev C)
DOCR-070645-E
Page 11 of 102
1.3 Product Protection Functions
Reverse polarity protection on the DC inputs
Short circuit protection
Arc-Fault Circuit Interruption
Anti-islanding protection
Input and output over-voltage protection
Input over-current protection
Monitoring of:
DC input insulation against ground
AC output voltage and frequency
Leakage current against ground
DC injection from AC output
Ambient temperature
IGBT module temperature
1.4 Circuit Structure Design
The basic schematic diagram of PVI 50/60TL inverter is shown in Figure 1.2. The input
of PV modules passes through surge protection circuitry, DC EMI wave filter, and the
front-end boost circuitry to achieve maximum power tracking and boost up voltages.
The output of the inverter converts the DC voltage to 3-phase AC voltage. The high
frequency AC components are removed with a wave filter. The 3-phase AC voltage is
then passed through two-stage relays and EMI wave filter to produce high quality AC
power.
Figure 1.2 - Schematic Diagram of PVI 50/60TL Inverter
