Huawei SUN 2000 Series User Manual page 57

SUN2000-4.95KTL-JPL0
User Manual
Alarm ID Alarm
Name
61440 Faulty
Monitorin
g Unit
2070 Active
Islanding
2071 Passive
Islanding
2072 Transient
AC
Overvolta
ge
Issue 03 (2020-06-03)
Alarm Cause
Severity
Minor Cause ID = 1

The flash memory is
insufficient.
 The flash memory has bad
sectors.
Major Cause ID = 1
When the power grid
experiences an AC power
outage, the solar inverter
detects islanding proactively.
Major Cause ID = 1
When the power grid
experiences an AC power
outage, the solar inverter
detects an island grid
passively.
Major Cause ID = 1
The solar inverter detects that
the phase voltage exceeds the
transient AC overvoltage
protection threshold.
Contact your dealer if the fault persists after you complete the procedures listed above.
Copyright © Huawei Technologies Co., Ltd.
7 System Maintenance
Suggestions
Turn off the AC output switch and
then the DC input switch. After 5
minutes, turn on the AC output
switch and then the DC input switch.
If the fault persists, replace the
monitoring board or contact your
dealer or Huawei technical support.
Check that the grid connection
voltage of the solar inverter is
normal.
Check that the grid connection
voltage of the solar inverter is
normal.
1. Check whether the grid
connection voltage exceeds the
upper threshold. If yes, contact
the local power operator.
2. If you have confirmed that the
grid connection voltage exceeds
the upper threshold and have
obtained the consent of the local
power operator, modify the
undervoltage protection
threshold.
3. Check whether the peak grid
voltage exceeds the upper
threshold.
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