Afci - Huawei SUN2000 Series User Manual

SUN2000-(8KTL-20KTL)-M2
User Manual
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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
Commissioning.
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 (2020-07-02) Copyright © Huawei Technologies Co., Ltd.
7 Man-Machine Interaction
B Device
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