Troubleshooting - Huawei SUN2000-2KTL-L0 User Manual

SUN2000-(2KTL-5KTL)-L0
User Manual
Check Item
Grounding
reliability

7.2 Troubleshooting

Alarm severities are defined as follows:



Table 7-2 Common alarms and troubleshooting measures
Alarm ID Alarm Name
2001 High String
Input Voltage
Issue 01 (2018-08-30)
Acceptance Criteria
Ground cables are securely connected.
Major: The SUN2000 enters Shutdown mode and disconnects from the power grid to
stop generating power after a fault occurs.
Minor: Some components are faulty but the SUN2000 can still connect to the power grid
and generate power.
Warning: The SUN2000 output power decreases due to external factors.
Alarm
Severity
Major
Copyright © Huawei Technologies Co., Ltd.
Possible Cause
The PV array is
incorrectly configured.
Excessive PV modules
are connected in series
to the PV string, and
therefore the
open-circuit voltage
exceeds the maximum
inverter input voltage.
7 System Maintenance
Maintenance
Interval
The first maintenance is
half a year after the
initial commissioning.
From then on, perform
the maintenance once
every 6 to 12 months.
Suggestion
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 input voltage.
After the PV array is correctly
configured, the inverter alarm
disappears.
The following is the mapping
between PV strings and alarm cause
IDs:

Cause ID = 1: string 1
 Cause ID = 2: string 2
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