Troubleshooting - Huawei SUN2000-50KTL-ZHM3 User Manual

SUN2000-(50KTL-ZHM3, 50KTL-M3)
User Manual
Check Item
Grounding
reliability
Air tightness
Clear vegetation
around the
inverters

8.3 Troubleshooting

Alarm severities are defined as follows:



Table 8-2 Common fault alarm list
ID Name
2001 High
string
input
voltage
2002 DC arc
Issue 01 (2022-07-29)
Check Method
Check that ground cables are securely
connected.
Check that all terminals and ports are
properly sealed.
Perform inspection and weeding as

required.
Clean the site promptly after weeding.

Major: The inverter is faulty. As a result, the output power decreases or the grid-tied
power generation is stopped.
Minor: Some components are faulty without affecting the grid-tied power generation.
Warning: The inverter works properly. The output power decreases or some authorization
functions fail due to external factors.
Severity Cause
The PV array is not properly
Major
configured. Excessive PV
modules are connected in
series to the PV string, and
therefore the PV string
open-circuit voltage exceeds
the maximum inverter
operating voltage.
Cause ID 1: PV strings 1

and 2
Cause ID 2: PV strings 3

and 4
Cause ID 3: PV strings 5

and 6
Cause ID 4: PV strings 7

and 8
Major The PV string power cables arc
Copyright © Huawei Technologies Co., Ltd.
Maintenance
Interval
be 6 to 12 months.
The first inspection is 6
months after the initial
commissioning. From
then on, the interval can
be 6 to 12 months.
Once a year
Based on the local
wilting season
Solution
Reduce the number of PV modules
connected in series to the PV string
until the PV string open-circuit
voltage is less than or equal to the
maximum inverter operating voltage.
After the PV string configuration is
corrected, the alarm disappears.
Check whether the PV string cables
8 Maintenance
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