03 Product Introduction
User Manual V1.0-2023-10-30
19
3.4 Features
In order to ensure the safe operation of the inverter and meet local safety regulations, the inverter will
automatically reduce the output power when the operating environment is not ideal.
The following are the factors that may occur power derating. Please try to avoid them when the
inverter is working.
• Unfavorable environmental conditions, e.g., direct sunlight, high temperature, etc.
• Inverter's output power percentage has been set.
• Changes in grid voltage and frequency.
• Higher input voltage value.
• Higher input current value.
Power derating
Reasons for generating electric arcs:
• Poor contact of connectors in PV systems.
• Cable connection error or damage.
•
Aging of connectors and cables.
AFCI (optional)
Method to detect electric arcs:
•
The inverter has integrated AFCI function and met the IEC 63027 standard.
• When the inverter detects an electric arc, users can check the time the alarm appears and the
detailed phenomenon through WE Mate App.
•
The inverter will shutdown for protection after triggering an AFCI alarm. After the alarm is cleared,
the inverter will automatically reconnect to the grid for operation.
•
Automatic reconnection: If the inverter triggers AFCI alarm less than 5 times within 24 hours,
each alarm will be automatically cleared after 5 minutes, and the inverter will reconnect to the
grid for operation;
•
Manual reconnection: If the inverter triggers the 5th AFCI alarm within 24 hours, the alarm
needs to be manually cleared before the inverter reconnect to the grid for operation. Please
refer to the WE Mate App User Manual for detailed operation.
The AFCI function is disabled by default at the factory. If you need to use it, please enable the "AFCI
Detection" function through the "Advanced Settings" interface on the WE Mate App.