Huawei SUN2000-111KTL-NHM0 User Manual page 118

SUN2000-111KTL-NHM0
User Manual
Alarm Alarm
ID Name
2033 Grid
Undervolta
ge
Issue 09 (2023-12-18)
Alarm Possible Causes
Severity
Major Cause ID = 1
The grid voltage is below the
lower threshold or the
undervoltage duration exceeds the
time that triggers low voltage
ride-through (LVRT).
Copyright © Huawei Technologies Co., Ltd.
8 Maintenance
Suggestions
1. If the alarm occurs
occasionally, the power
grid may be abnormal
temporarily. The solar
inverter automatically
recovers after
detecting that the
power grid becomes
normal.
2. If the alarm occurs
frequently, check
whether the power
grid voltage is within
the acceptable range.
If not, contact the
local power operator. If
yes, log in to the
mobile app,
SmartLogger, or
network management
system (NMS) to
modify the grid
undervoltage
protection threshold
with the consent of
the local power
operator.
3. If the fault persists for
a long time, check the
AC circuit breaker and
AC output power
cable.
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