Afci - Huawei SUN2000-2KTL-L1 User Manual

SUN2000-(2KTL-5KTL)-L1
User Manual
Figure 7-13 End-of-discharge capacity
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7.2.2 AFCI

Function
If PV modules or cables are incorrectly connected or damaged, electric arcs may be generated,
which may cause fire. Huawei solar inverters provide arc detection meets the requirement of
UL 1699B-2018, ensuring the user safety and property.
This function is enabled by default. The solar inverter automatically detects arc faults. To
disable this function, log in to the FusionSolar app, enter the Device Commissioning screen,
choose Settings > Feature parameters, and disable AFCI.
For details about entering the Device Commissioning screen, see
Clearing Alarms
The AFCI function involves the DC arc fault alarm.
The SUN2000 has the AFCI alarm automatic clearance mechanism. If an alarm is triggered
for less than five times within 24 hours, the SUN2000 automatically clears the alarm. If the
alarm is triggered for more than five times within 24 hours, the SUN2000 locks for protection.
You need to manually clear the alarm on the SUN2000 so that it can work properly.
You can manually clear the alarm as follows:
Log in to the FusionSolar app and choose My > Device Commissioning. On the Device
commissioning screen, connect and log in to the SUN2000 that generates the AFCI alarm, tap
Alarm management, and tap Clear on the right of the DC arc fault alarm to clear the alarm.
Issue 01 (2020-04-17) Copyright © Huawei Technologies Co., Ltd.
7 Man-Machine Interaction
B Device Commissioning.
72