Sungrow SG12RT, User Manual

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meet the requirements of CEI0-21 to protect the grid from abnormality after the inverter is
operational.
AFCI Function(Optional)
• AFCI activation
This function can be enabled to detect whether serial fault arc occurs in the loop between
PV array and inverter.
• AFCI self-test
This function is intended to test whether AFCI works as normal.
• Clear AFCI Alarm
When the inverter detects the AFCI alarm, it stops working. Clear the AFCI alarm so that
the inverter can restart the detection.
The fault arc detection function meets the standard requirements, please test
under the working conditions as required by the standard.
SPI Function(for Italy CEI0-21 Grid Code Only)
The inverter SPI interface, only for Italy, is able to easily choose the grid protection mode
based on the local plant requirements:
• Local SPI Mode: protected by the preset values in inverter.
• External SPI Mode: protected by a separate SPI protection device on site.
Plant
Size
≤ 11.08 kVA > 11.08 kVA
SPI
Control
Modes
Local SPI Mode
(Default in Inverter)
Local SPI Mode
(Default in Inverter)
External SPI
Mode
SPI In-
terface
Integrated in Inverter Integrated in Inverter
Separate SPI
Protection
Device on
Site
External
SPI Sig-
nal
Setting
0 0 0 0 1
Local
SPI Sig-
nal
Setting
0
(Default in
Inverter)
1
0
(Default in
Inverter)
1 1
2 Product Description User Manual